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prepare release
This commit is contained in:
UniDoc Build
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commit
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File diff suppressed because one or more lines are too long
136
common/common.go
136
common/common.go
@ -10,93 +10,93 @@
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// terms that can be accessed at https://unidoc.io/eula/
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// Package common contains common properties used by the subpackages.
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package common ;import (_e "fmt";_ec "io";_gb "os";_g "path/filepath";_ab "runtime";_a "time";);
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// DummyLogger does nothing.
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type DummyLogger struct{};
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// IsLogLevel returns true if log level is greater or equal than `level`.
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// Can be used to avoid resource intensive calls to loggers.
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func (_dg ConsoleLogger )IsLogLevel (level LogLevel )bool {return _dg .LogLevel >=level };func UtcTimeFormat (t _a .Time )string {return t .Format (_ccc )+"\u0020\u0055\u0054\u0043"};const _beg =9;const Version ="\u0033\u002e\u0031\u0032\u002e\u0031";
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// Error logs error message.
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func (_fb ConsoleLogger )Error (format string ,args ...interface{}){if _fb .LogLevel >=LogLevelError {_ag :="\u005b\u0045\u0052\u0052\u004f\u0052\u005d\u0020";_fb .output (_gb .Stdout ,_ag ,format ,args ...);};};
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// NewConsoleLogger creates new console logger.
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func NewConsoleLogger (logLevel LogLevel )*ConsoleLogger {return &ConsoleLogger {LogLevel :logLevel }};
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// Warning does nothing for dummy logger.
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func (DummyLogger )Warning (format string ,args ...interface{}){};
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package common ;import (_e "fmt";_fe "io";_b "os";_eb "path/filepath";_fg "runtime";_c "time";);const _ede =2020;func UtcTimeFormat (t _c .Time )string {return t .Format (_ff )+"\u0020\u0055\u0054\u0043"};
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// Info logs info message.
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func (_ca ConsoleLogger )Info (format string ,args ...interface{}){if _ca .LogLevel >=LogLevelInfo {_abfg :="\u005bI\u004e\u0046\u004f\u005d\u0020";_ca .output (_gb .Stdout ,_abfg ,format ,args ...);};};var ReleasedAt =_a .Date (_abc ,_beg ,_eeef ,_ce ,_eb ,0,0,_a .UTC );
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func (_fed ConsoleLogger )Info (format string ,args ...interface{}){if _fed .LogLevel >=LogLevelInfo {_gf :="\u005bI\u004e\u0046\u004f\u005d\u0020";_fed .output (_b .Stdout ,_gf ,format ,args ...);};};
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// ConsoleLogger is a logger that writes logs to the 'os.Stdout'
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type ConsoleLogger struct{LogLevel LogLevel ;};
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// Trace logs trace message.
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func (_ab WriterLogger )Trace (format string ,args ...interface{}){if _ab .LogLevel >=LogLevelTrace {_bde :="\u005b\u0054\u0052\u0041\u0043\u0045\u005d\u0020";_ab .logToWriter (_ab .Output ,_bde ,format ,args ...);};};func (_fd ConsoleLogger )output (_ca _fe .Writer ,_ccf string ,_ga string ,_ec ...interface{}){_bb (_ca ,_ccf ,_ga ,_ec ...);};
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// IsLogLevel returns true if log level is greater or equal than `level`.
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// Can be used to avoid resource intensive calls to loggers.
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func (_bb WriterLogger )IsLogLevel (level LogLevel )bool {return _bb .LogLevel >=level };func (_aa ConsoleLogger )output (_bd _ec .Writer ,_fa string ,_eee string ,_bga ...interface{}){_eed (_bd ,_fa ,_eee ,_bga ...);};
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func (_bd WriterLogger )IsLogLevel (level LogLevel )bool {return _bd .LogLevel >=level };
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// Debug does nothing for dummy logger.
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func (DummyLogger )Debug (format string ,args ...interface{}){};
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// IsLogLevel returns true from dummy logger.
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func (DummyLogger )IsLogLevel (level LogLevel )bool {return true };
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// LogLevel is the verbosity level for logging.
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type LogLevel int ;var Log Logger =DummyLogger {};func _eed (_cc _ec .Writer ,_dbg string ,_dcd string ,_dca ...interface{}){_ ,_be ,_bef ,_dce :=_ab .Caller (3);if !_dce {_be ="\u003f\u003f\u003f";_bef =0;}else {_be =_g .Base (_be );};_gdf :=_e .Sprintf ("\u0025s\u0020\u0025\u0073\u003a\u0025\u0064 ",_dbg ,_be ,_bef )+_dcd +"\u000a";_e .Fprintf (_cc ,_gdf ,_dca ...);};
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type LogLevel int ;
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// Error does nothing for dummy logger.
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func (DummyLogger )Error (format string ,args ...interface{}){};const (LogLevelTrace LogLevel =5;LogLevelDebug LogLevel =4;LogLevelInfo LogLevel =3;LogLevelNotice LogLevel =2;LogLevelWarning LogLevel =1;LogLevelError LogLevel =0;);
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// IsLogLevel returns true if log level is greater or equal than `level`.
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// Can be used to avoid resource intensive calls to loggers.
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func (_baa ConsoleLogger )IsLogLevel (level LogLevel )bool {return _baa .LogLevel >=level };func _bb (_bag _fe .Writer ,_bdb string ,_fb string ,_ebc ...interface{}){_ ,_fbc ,_ecb ,_gbc :=_fg .Caller (3);if !_gbc {_fbc ="\u003f\u003f\u003f";_ecb =0;}else {_fbc =_eb .Base (_fbc );};_aaf :=_e .Sprintf ("\u0025s\u0020\u0025\u0073\u003a\u0025\u0064 ",_bdb ,_fbc ,_ecb )+_fb +"\u000a";_e .Fprintf (_bag ,_aaf ,_ebc ...);};const _bba =18;
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// Notice logs notice message.
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func (_gec WriterLogger )Notice (format string ,args ...interface{}){if _gec .LogLevel >=LogLevelNotice {_cg :="\u005bN\u004f\u0054\u0049\u0043\u0045\u005d ";_gec .logToWriter (_gec .Output ,_cg ,format ,args ...);};};
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// Debug logs debug message.
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func (_ag ConsoleLogger )Debug (format string ,args ...interface{}){if _ag .LogLevel >=LogLevelDebug {_ae :="\u005b\u0044\u0045\u0042\u0055\u0047\u005d\u0020";_ag .output (_b .Stdout ,_ae ,format ,args ...);};};
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// Warning logs warning message.
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func (_bf ConsoleLogger )Warning (format string ,args ...interface{}){if _bf .LogLevel >=LogLevelWarning {_dd :="\u005b\u0057\u0041\u0052\u004e\u0049\u004e\u0047\u005d\u0020";_bf .output (_b .Stdout ,_dd ,format ,args ...);};};
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// Info logs info message.
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func (_ecd WriterLogger )Info (format string ,args ...interface{}){if _ecd .LogLevel >=LogLevelInfo {_gd :="\u005bI\u004e\u0046\u004f\u005d\u0020";_ecd .logToWriter (_ecd .Output ,_gd ,format ,args ...);};};const _ff ="\u0032\u0020\u004aan\u0075\u0061\u0072\u0079\u0020\u0032\u0030\u0030\u0036\u0020\u0061\u0074\u0020\u0031\u0035\u003a\u0030\u0034";
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// Notice logs notice message.
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func (_bae ConsoleLogger )Notice (format string ,args ...interface{}){if _bae .LogLevel >=LogLevelNotice {_de :="\u005bN\u004f\u0054\u0049\u0043\u0045\u005d ";_bae .output (_b .Stdout ,_de ,format ,args ...);};};func (_da WriterLogger )logToWriter (_cge _fe .Writer ,_fec string ,_aba string ,_gbg ...interface{}){_bb (_cge ,_fec ,_aba ,_gbg );};
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// Notice does nothing for dummy logger.
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func (DummyLogger )Notice (format string ,args ...interface{}){};
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// Error logs error message.
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func (_bcg WriterLogger )Error (format string ,args ...interface{}){if _bcg .LogLevel >=LogLevelError {_fce :="\u005b\u0045\u0052\u0052\u004f\u0052\u005d\u0020";_bcg .logToWriter (_bcg .Output ,_fce ,format ,args ...);};};
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// Warning logs warning message.
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func (_ac ConsoleLogger )Warning (format string ,args ...interface{}){if _ac .LogLevel >=LogLevelWarning {_ba :="\u005b\u0057\u0041\u0052\u004e\u0049\u004e\u0047\u005d\u0020";_ac .output (_gb .Stdout ,_ba ,format ,args ...);};};
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// Notice logs notice message.
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func (_bab WriterLogger )Notice (format string ,args ...interface{}){if _bab .LogLevel >=LogLevelNotice {_eca :="\u005bN\u004f\u0054\u0049\u0043\u0045\u005d ";_bab .logToWriter (_bab .Output ,_eca ,format ,args ...);};};
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// Warning logs warning message.
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func (_ecg WriterLogger )Warning (format string ,args ...interface{}){if _ecg .LogLevel >=LogLevelWarning {_caa :="\u005b\u0057\u0041\u0052\u004e\u0049\u004e\u0047\u005d\u0020";_ecg .logToWriter (_ecg .Output ,_caa ,format ,args ...);};};const _eeef =28;
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// Logger is the interface used for logging in the unipdf package.
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type Logger interface{Error (_ed string ,_ad ...interface{});Warning (_ee string ,_ef ...interface{});Notice (_gg string ,_c ...interface{});Info (_abf string ,_b ...interface{});Debug (_cd string ,_d ...interface{});Trace (_bc string ,_fc ...interface{});IsLogLevel (_edf LogLevel )bool ;};
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// Trace logs trace message.
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func (_geg WriterLogger )Trace (format string ,args ...interface{}){if _geg .LogLevel >=LogLevelTrace {_gf :="\u005b\u0054\u0052\u0041\u0043\u0045\u005d\u0020";_geg .logToWriter (_geg .Output ,_gf ,format ,args ...);};};
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// IsLogLevel returns true from dummy logger.
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func (DummyLogger )IsLogLevel (level LogLevel )bool {return true };
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// Notice logs notice message.
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func (_da ConsoleLogger )Notice (format string ,args ...interface{}){if _da .LogLevel >=LogLevelNotice {_gc :="\u005bN\u004f\u0054\u0049\u0043\u0045\u005d ";_da .output (_gb .Stdout ,_gc ,format ,args ...);};};const _abc =2020;
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// Info logs info message.
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func (_dc WriterLogger )Info (format string ,args ...interface{}){if _dc .LogLevel >=LogLevelInfo {_bdc :="\u005bI\u004e\u0046\u004f\u005d\u0020";_dc .logToWriter (_dc .Output ,_bdc ,format ,args ...);};};const _ccc ="\u0032\u0020\u004aan\u0075\u0061\u0072\u0079\u0020\u0032\u0030\u0030\u0036\u0020\u0061\u0074\u0020\u0031\u0035\u003a\u0030\u0034";
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// Debug logs debug message.
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func (_fe ConsoleLogger )Debug (format string ,args ...interface{}){if _fe .LogLevel >=LogLevelDebug {_bg :="\u005b\u0044\u0045\u0042\u0055\u0047\u005d\u0020";_fe .output (_gb .Stdout ,_bg ,format ,args ...);};};
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// Debug does nothing for dummy logger.
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func (DummyLogger )Debug (format string ,args ...interface{}){};const _ce =21;
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// Debug logs debug message.
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func (_ge WriterLogger )Debug (format string ,args ...interface{}){if _ge .LogLevel >=LogLevelDebug {_dgg :="\u005b\u0044\u0045\u0042\u0055\u0047\u005d\u0020";_ge .logToWriter (_ge .Output ,_dgg ,format ,args ...);};};
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// Trace logs trace message.
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func (_gd ConsoleLogger )Trace (format string ,args ...interface{}){if _gd .LogLevel >=LogLevelTrace {_af :="\u005b\u0054\u0052\u0041\u0043\u0045\u005d\u0020";_gd .output (_gb .Stdout ,_af ,format ,args ...);};};func (_gdb WriterLogger )logToWriter (_fg _ec .Writer ,_dcf string ,_db string ,_cae ...interface{}){_eed (_fg ,_dcf ,_db ,_cae );};
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// Trace does nothing for dummy logger.
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func (DummyLogger )Trace (format string ,args ...interface{}){};
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func (_a ConsoleLogger )Error (format string ,args ...interface{}){if _a .LogLevel >=LogLevelError {_ceg :="\u005b\u0045\u0052\u0052\u004f\u0052\u005d\u0020";_a .output (_b .Stdout ,_ceg ,format ,args ...);};};
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// Info does nothing for dummy logger.
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func (DummyLogger )Info (format string ,args ...interface{}){};
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// NewWriterLogger creates new 'writer' logger.
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func NewWriterLogger (logLevel LogLevel ,writer _ec .Writer )*WriterLogger {_aba :=WriterLogger {Output :writer ,LogLevel :logLevel };return &_aba ;};
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// NewConsoleLogger creates new console logger.
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func NewConsoleLogger (logLevel LogLevel )*ConsoleLogger {return &ConsoleLogger {LogLevel :logLevel }};
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// Warning logs warning message.
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func (_ccb WriterLogger )Warning (format string ,args ...interface{}){if _ccb .LogLevel >=LogLevelWarning {_ge :="\u005b\u0057\u0041\u0052\u004e\u0049\u004e\u0047\u005d\u0020";_ccb .logToWriter (_ccb .Output ,_ge ,format ,args ...);};};
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// SetLogger sets 'logger' to be used by the unidoc unipdf library.
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func SetLogger (logger Logger ){Log =logger };const _eb =50;
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func SetLogger (logger Logger ){Log =logger };const _feg =45;
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// Debug logs debug message.
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func (_gb WriterLogger )Debug (format string ,args ...interface{}){if _gb .LogLevel >=LogLevelDebug {_ea :="\u005b\u0044\u0045\u0042\u0055\u0047\u005d\u0020";_gb .logToWriter (_gb .Output ,_ea ,format ,args ...);};};
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// Trace logs trace message.
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func (_dca ConsoleLogger )Trace (format string ,args ...interface{}){if _dca .LogLevel >=LogLevelTrace {_bab :="\u005b\u0054\u0052\u0041\u0043\u0045\u005d\u0020";_dca .output (_b .Stdout ,_bab ,format ,args ...);};};
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// ConsoleLogger is a logger that writes logs to the 'os.Stdout'
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type ConsoleLogger struct{LogLevel LogLevel ;};const Version ="\u0033\u002e\u0031\u0032\u002e\u0032";var ReleasedAt =_c .Date (_ede ,_ffc ,_be ,_bba ,_feg ,0,0,_c .UTC );
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// Warning does nothing for dummy logger.
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func (DummyLogger )Warning (format string ,args ...interface{}){};
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// NewWriterLogger creates new 'writer' logger.
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func NewWriterLogger (logLevel LogLevel ,writer _fe .Writer )*WriterLogger {_fgd :=WriterLogger {Output :writer ,LogLevel :logLevel };return &_fgd ;};const _ffc =10;var Log Logger =DummyLogger {};
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// Logger is the interface used for logging in the unipdf package.
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type Logger interface{Error (_eg string ,_fea ...interface{});Warning (_ba string ,_g ...interface{});Notice (_fa string ,_fead ...interface{});Info (_ce string ,_fc ...interface{});Debug (_fga string ,_d ...interface{});Trace (_dc string ,_ed ...interface{});IsLogLevel (_cc LogLevel )bool ;};
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// WriterLogger is the logger that writes data to the Output writer
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type WriterLogger struct{LogLevel LogLevel ;Output _ec .Writer ;};
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type WriterLogger struct{LogLevel LogLevel ;Output _fe .Writer ;};
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// Error does nothing for dummy logger.
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func (DummyLogger )Error (format string ,args ...interface{}){};const (LogLevelTrace LogLevel =5;LogLevelDebug LogLevel =4;LogLevelInfo LogLevel =3;LogLevelNotice LogLevel =2;LogLevelWarning LogLevel =1;LogLevelError LogLevel =0;);
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// Error logs error message.
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func (_df WriterLogger )Error (format string ,args ...interface{}){if _df .LogLevel >=LogLevelError {_cd :="\u005b\u0045\u0052\u0052\u004f\u0052\u005d\u0020";_df .logToWriter (_df .Output ,_cd ,format ,args ...);};};
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// DummyLogger does nothing.
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type DummyLogger struct{};const _be =5;
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// Trace does nothing for dummy logger.
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func (DummyLogger )Trace (format string ,args ...interface{}){};
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File diff suppressed because one or more lines are too long
File diff suppressed because one or more lines are too long
@ -14,204 +14,204 @@
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// page content streams and XObject forms and thus also in annotation appearance streams.
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//
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// Also defines utility functions for drawing common shapes such as rectangles, lines and circles (ovals).
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package draw ;import (_g "fmt";_c "github.com/unidoc/unipdf/v3/contentstream";_f "github.com/unidoc/unipdf/v3/core";_e "github.com/unidoc/unipdf/v3/internal/transform";_bg "github.com/unidoc/unipdf/v3/model";_b "math";);
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package draw ;import (_g "fmt";_c "github.com/unidoc/unipdf/v3/contentstream";_ba "github.com/unidoc/unipdf/v3/core";_e "github.com/unidoc/unipdf/v3/internal/transform";_d "github.com/unidoc/unipdf/v3/model";_bd "math";);
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// ToPdfRectangle returns the bounding box as a PDF rectangle.
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func (_ggd BoundingBox )ToPdfRectangle ()*_bg .PdfRectangle {return &_bg .PdfRectangle {Llx :_ggd .X ,Lly :_ggd .Y ,Urx :_ggd .X +_ggd .Width ,Ury :_ggd .Y +_ggd .Height };};
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// RemovePoint removes the point at the index specified by number from the
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// path. The index is 1-based.
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func (_gd Path )RemovePoint (number int )Path {if number < 1||number > len (_gd .Points ){return _gd ;};_cbe :=number -1;_gd .Points =append (_gd .Points [:_cbe ],_gd .Points [_cbe +1:]...);return _gd ;};
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// Draw draws the basic line to PDF. Generates the content stream which can be used in page contents or appearance
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// stream of annotation. Returns the stream content, XForm bounding box (local), bounding box and an error if
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// one occurred.
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func (_aef BasicLine )Draw (gsName string )([]byte ,*_bg .PdfRectangle ,error ){_cfbe :=_aef .LineWidth ;_abbg :=NewPath ();_abbg =_abbg .AppendPoint (NewPoint (_aef .X1 ,_aef .Y1 ));_abbg =_abbg .AppendPoint (NewPoint (_aef .X2 ,_aef .Y2 ));_acd :=_c .NewContentCreator ();_dcg :=_abbg .GetBoundingBox ();DrawPathWithCreator (_abbg ,_acd );if _aef .LineStyle ==LineStyleDashed {_acd .Add_d ([]int64 {1,1},0);};_acd .Add_RG (_aef .LineColor .R (),_aef .LineColor .G (),_aef .LineColor .B ()).Add_w (_cfbe ).Add_S ().Add_Q ();return _acd .Bytes (),_dcg .ToPdfRectangle (),nil ;};
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// Path consists of straight line connections between each point defined in an array of points.
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type Path struct{Points []Point ;};
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// Line defines a line shape between point 1 (X1,Y1) and point 2 (X2,Y2). The line ending styles can be none (regular line),
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// or arrows at either end. The line also has a specified width, color and opacity.
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type Line struct{X1 float64 ;Y1 float64 ;X2 float64 ;Y2 float64 ;LineColor *_d .PdfColorDeviceRGB ;Opacity float64 ;LineWidth float64 ;LineEndingStyle1 LineEndingStyle ;LineEndingStyle2 LineEndingStyle ;LineStyle LineStyle ;};
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// NewPoint returns a new point with the coordinates x, y.
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func NewPoint (x ,y float64 )Point {return Point {X :x ,Y :y }};
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// NewPath returns a new empty path.
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func NewPath ()Path {return Path {}};
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// FlipY flips the sign of the Dy component of the vector.
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func (_gcac Vector )FlipY ()Vector {_gcac .Dy =-_gcac .Dy ;return _gcac };
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// Draw draws the polygon. A graphics state name can be specified for
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// setting the polygon properties (e.g. setting the opacity). Otherwise leave
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// empty (""). Returns the content stream as a byte array and the polygon
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// bounding box.
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func (_fga Polygon )Draw (gsName string )([]byte ,*_d .PdfRectangle ,error ){_ge :=_c .NewContentCreator ();_ge .Add_q ();_fga .FillEnabled =_fga .FillEnabled &&_fga .FillColor !=nil ;if _fga .FillEnabled {_ge .Add_rg (_fga .FillColor .R (),_fga .FillColor .G (),_fga .FillColor .B ());};_fga .BorderEnabled =_fga .BorderEnabled &&_fga .BorderColor !=nil ;if _fga .BorderEnabled {_ge .Add_RG (_fga .BorderColor .R (),_fga .BorderColor .G (),_fga .BorderColor .B ());_ge .Add_w (_fga .BorderWidth );};if len (gsName )> 1{_ge .Add_gs (_ba .PdfObjectName (gsName ));};_eec :=NewPath ();for _ ,_fge :=range _fga .Points {for _cegf ,_cf :=range _fge {_eec =_eec .AppendPoint (_cf );if _cegf ==0{_ge .Add_m (_cf .X ,_cf .Y );}else {_ge .Add_l (_cf .X ,_cf .Y );};};_ge .Add_h ();};if _fga .FillEnabled &&_fga .BorderEnabled {_ge .Add_B ();}else if _fga .FillEnabled {_ge .Add_f ();}else if _fga .BorderEnabled {_ge .Add_S ();};_ge .Add_Q ();return _ge .Bytes (),_eec .GetBoundingBox ().ToPdfRectangle (),nil ;};
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// Polygon is a multi-point shape that can be drawn to a PDF content stream.
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type Polygon struct{Points [][]Point ;FillEnabled bool ;FillColor *_d .PdfColorDeviceRGB ;BorderEnabled bool ;BorderColor *_d .PdfColorDeviceRGB ;BorderWidth float64 ;};
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// LineStyle refers to how the line will be created.
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type LineStyle int ;
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// NewVector returns a new vector with the direction specified by dx and dy.
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func NewVector (dx ,dy float64 )Vector {_dab :=Vector {};_dab .Dx =dx ;_dab .Dy =dy ;return _dab };
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// RemovePoint removes the point at the index specified by number from the
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// path. The index is 1-based.
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func (_eb Path )RemovePoint (number int )Path {if number < 1||number > len (_eb .Points ){return _eb ;};_eeb :=number -1;_eb .Points =append (_eb .Points [:_eeb ],_eb .Points [_eeb +1:]...);return _eb ;};
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// PolyBezierCurve represents a composite curve that is the result of
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// joining multiple cubic Bezier curves.
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type PolyBezierCurve struct{Curves []CubicBezierCurve ;BorderWidth float64 ;BorderColor *_d .PdfColorDeviceRGB ;FillEnabled bool ;FillColor *_d .PdfColorDeviceRGB ;};
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// AppendPoint adds the specified point to the path.
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func (_ed Path )AppendPoint (point Point )Path {_ed .Points =append (_ed .Points ,point );return _ed };
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// Offset shifts the Bezier path with the specified offsets.
|
||||
func (_ecf CubicBezierPath )Offset (offX ,offY float64 )CubicBezierPath {for _dg ,_ca :=range _ecf .Curves {_ecf .Curves [_dg ]=_ca .AddOffsetXY (offX ,offY );};return _ecf ;};func (_gab Point )String ()string {return _g .Sprintf ("(\u0025\u002e\u0031\u0066\u002c\u0025\u002e\u0031\u0066\u0029",_gab .X ,_gab .Y );};
|
||||
|
||||
// NewCubicBezierPath returns a new empty cubic Bezier path.
|
||||
func NewCubicBezierPath ()CubicBezierPath {_bg :=CubicBezierPath {};_bg .Curves =[]CubicBezierCurve {};return _bg ;};
|
||||
|
||||
// Draw draws the line to PDF contentstream. Generates the content stream which can be used in page contents or
|
||||
// appearance stream of annotation. Returns the stream content, XForm bounding box (local), bounding box and an error
|
||||
// if one occurred.
|
||||
func (_cgc Line )Draw (gsName string )([]byte ,*_d .PdfRectangle ,error ){_abe ,_aae :=_cgc .X1 ,_cgc .X2 ;_ecc ,_ad :=_cgc .Y1 ,_cgc .Y2 ;_fd :=_ad -_ecc ;_cce :=_aae -_abe ;_cee :=_bd .Atan2 (_fd ,_cce );L :=_bd .Sqrt (_bd .Pow (_cce ,2.0)+_bd .Pow (_fd ,2.0));_abec :=_cgc .LineWidth ;_fc :=_bd .Pi ;_cfe :=1.0;if _cce < 0{_cfe *=-1.0;};if _fd < 0{_cfe *=-1.0;};VsX :=_cfe *(-_abec /2*_bd .Cos (_cee +_fc /2));VsY :=_cfe *(-_abec /2*_bd .Sin (_cee +_fc /2)+_abec *_bd .Sin (_cee +_fc /2));V1X :=VsX +_abec /2*_bd .Cos (_cee +_fc /2);V1Y :=VsY +_abec /2*_bd .Sin (_cee +_fc /2);V2X :=VsX +_abec /2*_bd .Cos (_cee +_fc /2)+L *_bd .Cos (_cee );V2Y :=VsY +_abec /2*_bd .Sin (_cee +_fc /2)+L *_bd .Sin (_cee );V3X :=VsX +_abec /2*_bd .Cos (_cee +_fc /2)+L *_bd .Cos (_cee )+_abec *_bd .Cos (_cee -_fc /2);V3Y :=VsY +_abec /2*_bd .Sin (_cee +_fc /2)+L *_bd .Sin (_cee )+_abec *_bd .Sin (_cee -_fc /2);V4X :=VsX +_abec /2*_bd .Cos (_cee -_fc /2);V4Y :=VsY +_abec /2*_bd .Sin (_cee -_fc /2);_eee :=NewPath ();_eee =_eee .AppendPoint (NewPoint (V1X ,V1Y ));_eee =_eee .AppendPoint (NewPoint (V2X ,V2Y ));_eee =_eee .AppendPoint (NewPoint (V3X ,V3Y ));_eee =_eee .AppendPoint (NewPoint (V4X ,V4Y ));_cdg :=_cgc .LineEndingStyle1 ;_dba :=_cgc .LineEndingStyle2 ;_df :=3*_abec ;_edb :=3*_abec ;_cfc :=(_edb -_abec )/2;if _dba ==LineEndingStyleArrow {_ebe :=_eee .GetPointNumber (2);_cca :=NewVectorPolar (_df ,_cee +_fc );_fcc :=_ebe .AddVector (_cca );_ace :=NewVectorPolar (_edb /2,_cee +_fc /2);_dea :=NewVectorPolar (_df ,_cee );_gga :=NewVectorPolar (_cfc ,_cee +_fc /2);_ag :=_fcc .AddVector (_gga );_daf :=_dea .Add (_ace .Flip ());_dbe :=_ag .AddVector (_daf );_fdg :=_ace .Scale (2).Flip ().Add (_daf .Flip ());_dbd :=_dbe .AddVector (_fdg );_ccae :=_fcc .AddVector (NewVectorPolar (_abec ,_cee -_fc /2));_ebc :=NewPath ();_ebc =_ebc .AppendPoint (_eee .GetPointNumber (1));_ebc =_ebc .AppendPoint (_fcc );_ebc =_ebc .AppendPoint (_ag );_ebc =_ebc .AppendPoint (_dbe );_ebc =_ebc .AppendPoint (_dbd );_ebc =_ebc .AppendPoint (_ccae );_ebc =_ebc .AppendPoint (_eee .GetPointNumber (4));_eee =_ebc ;};if _cdg ==LineEndingStyleArrow {_dbg :=_eee .GetPointNumber (1);_aaea :=_eee .GetPointNumber (_eee .Length ());_gaa :=NewVectorPolar (_abec /2,_cee +_fc +_fc /2);_bac :=_dbg .AddVector (_gaa );_feaa :=NewVectorPolar (_df ,_cee ).Add (NewVectorPolar (_edb /2,_cee +_fc /2));_aga :=_bac .AddVector (_feaa );_cfed :=NewVectorPolar (_cfc ,_cee -_fc /2);_ceb :=_aga .AddVector (_cfed );_fdb :=NewVectorPolar (_df ,_cee );_adc :=_aaea .AddVector (_fdb );_gafd :=NewVectorPolar (_cfc ,_cee +_fc +_fc /2);_be :=_adc .AddVector (_gafd );_ccg :=_bac ;_ggg :=NewPath ();_ggg =_ggg .AppendPoint (_bac );_ggg =_ggg .AppendPoint (_aga );_ggg =_ggg .AppendPoint (_ceb );for _ ,_cfd :=range _eee .Points [1:len (_eee .Points )-1]{_ggg =_ggg .AppendPoint (_cfd );};_ggg =_ggg .AppendPoint (_adc );_ggg =_ggg .AppendPoint (_be );_ggg =_ggg .AppendPoint (_ccg );_eee =_ggg ;};_eff :=_c .NewContentCreator ();_eff .Add_q ().Add_rg (_cgc .LineColor .R (),_cgc .LineColor .G (),_cgc .LineColor .B ());if len (gsName )> 1{_eff .Add_gs (_ba .PdfObjectName (gsName ));};_eee =_eee .Offset (_cgc .X1 ,_cgc .Y1 );_ade :=_eee .GetBoundingBox ();DrawPathWithCreator (_eee ,_eff );if _cgc .LineStyle ==LineStyleDashed {_eff .Add_d ([]int64 {1,1},0).Add_S ().Add_f ().Add_Q ();}else {_eff .Add_f ().Add_Q ();};return _eff .Bytes (),_ade .ToPdfRectangle (),nil ;};
|
||||
|
||||
// AddVector adds vector to a point.
|
||||
func (_aff Point )AddVector (v Vector )Point {_aff .X +=v .Dx ;_aff .Y +=v .Dy ;return _aff };const (LineStyleSolid LineStyle =0;LineStyleDashed LineStyle =1;);
|
||||
|
||||
// ToPdfRectangle returns the bounding box as a PDF rectangle.
|
||||
func (_da BoundingBox )ToPdfRectangle ()*_d .PdfRectangle {return &_d .PdfRectangle {Llx :_da .X ,Lly :_da .Y ,Urx :_da .X +_da .Width ,Ury :_da .Y +_da .Height };};
|
||||
|
||||
// NewVectorBetween returns a new vector with the direction specified by
|
||||
// the subtraction of point a from point b (b-a).
|
||||
func NewVectorBetween (a Point ,b Point )Vector {_efd :=Vector {};_efd .Dx =b .X -a .X ;_efd .Dy =b .Y -a .Y ;return _efd ;};
|
||||
|
||||
// LineEndingStyle defines the line ending style for lines.
|
||||
// The currently supported line ending styles are None, Arrow (ClosedArrow) and Butt.
|
||||
type LineEndingStyle int ;
|
||||
|
||||
// Scale scales the vector by the specified factor.
|
||||
func (_gce Vector )Scale (factor float64 )Vector {_gfa :=_gce .Magnitude ();_bae :=_gce .GetPolarAngle ();_gce .Dx =factor *_gfa *_bd .Cos (_bae );_gce .Dy =factor *_gfa *_bd .Sin (_bae );return _gce ;};
|
||||
|
||||
// AddOffsetXY adds X,Y offset to all points on a curve.
|
||||
func (_ec CubicBezierCurve )AddOffsetXY (offX ,offY float64 )CubicBezierCurve {_ec .P0 .X +=offX ;_ec .P1 .X +=offX ;_ec .P2 .X +=offX ;_ec .P3 .X +=offX ;_ec .P0 .Y +=offY ;_ec .P1 .Y +=offY ;_ec .P2 .Y +=offY ;_ec .P3 .Y +=offY ;return _ec ;};
|
||||
|
||||
// BoundingBox represents the smallest rectangular area that encapsulates an object.
|
||||
type BoundingBox struct{X float64 ;Y float64 ;Width float64 ;Height float64 ;};
|
||||
|
||||
// FlipX flips the sign of the Dx component of the vector.
|
||||
func (_ea Vector )FlipX ()Vector {_ea .Dx =-_ea .Dx ;return _ea };
|
||||
|
||||
// Draw draws the basic line to PDF. Generates the content stream which can be used in page contents or appearance
|
||||
// stream of annotation. Returns the stream content, XForm bounding box (local), bounding box and an error if
|
||||
// one occurred.
|
||||
func (_gffe BasicLine )Draw (gsName string )([]byte ,*_d .PdfRectangle ,error ){_dfd :=_gffe .LineWidth ;_bfa :=NewPath ();_bfa =_bfa .AppendPoint (NewPoint (_gffe .X1 ,_gffe .Y1 ));_bfa =_bfa .AppendPoint (NewPoint (_gffe .X2 ,_gffe .Y2 ));_beg :=_c .NewContentCreator ();_bdag :=_bfa .GetBoundingBox ();DrawPathWithCreator (_bfa ,_beg );if _gffe .LineStyle ==LineStyleDashed {_beg .Add_d ([]int64 {1,1},0);};_beg .Add_RG (_gffe .LineColor .R (),_gffe .LineColor .G (),_gffe .LineColor .B ()).Add_w (_dfd ).Add_S ().Add_Q ();return _beg .Bytes (),_bdag .ToPdfRectangle (),nil ;};
|
||||
|
||||
// ToPdfRectangle returns the rectangle as a PDF rectangle.
|
||||
func (_cda Rectangle )ToPdfRectangle ()*_bg .PdfRectangle {return &_bg .PdfRectangle {Llx :_cda .X ,Lly :_cda .Y ,Urx :_cda .X +_cda .Width ,Ury :_cda .Y +_cda .Height };};const (LineStyleSolid LineStyle =0;LineStyleDashed LineStyle =1;);
|
||||
func (_cbe Rectangle )ToPdfRectangle ()*_d .PdfRectangle {return &_d .PdfRectangle {Llx :_cbe .X ,Lly :_cbe .Y ,Urx :_cbe .X +_cbe .Width ,Ury :_cbe .Y +_cbe .Height };};
|
||||
|
||||
// AppendCurve appends the specified Bezier curve to the path.
|
||||
func (_ef CubicBezierPath )AppendCurve (curve CubicBezierCurve )CubicBezierPath {_ef .Curves =append (_ef .Curves ,curve );return _ef ;};
|
||||
|
||||
// Copy returns a clone of the path.
|
||||
func (_eg Path )Copy ()Path {_fg :=Path {};_fg .Points =[]Point {};for _ ,_ecd :=range _eg .Points {_fg .Points =append (_fg .Points ,_ecd );};return _fg ;};
|
||||
|
||||
// Draw draws the rectangle. Can specify a graphics state (gsName) for setting opacity etc.
|
||||
// Otherwise leave empty (""). Returns the content stream as a byte array, bounding box and an error on failure.
|
||||
func (_gfe Rectangle )Draw (gsName string )([]byte ,*_d .PdfRectangle ,error ){_gaf :=NewPath ();_gaf =_gaf .AppendPoint (NewPoint (0,0));_gaf =_gaf .AppendPoint (NewPoint (0,_gfe .Height ));_gaf =_gaf .AppendPoint (NewPoint (_gfe .Width ,_gfe .Height ));_gaf =_gaf .AppendPoint (NewPoint (_gfe .Width ,0));_gaf =_gaf .AppendPoint (NewPoint (0,0));if _gfe .X !=0||_gfe .Y !=0{_gaf =_gaf .Offset (_gfe .X ,_gfe .Y );};_fea :=_c .NewContentCreator ();_fea .Add_q ();if _gfe .FillEnabled {_fea .Add_rg (_gfe .FillColor .R (),_gfe .FillColor .G (),_gfe .FillColor .B ());};if _gfe .BorderEnabled {_fea .Add_RG (_gfe .BorderColor .R (),_gfe .BorderColor .G (),_gfe .BorderColor .B ());_fea .Add_w (_gfe .BorderWidth );};if len (gsName )> 1{_fea .Add_gs (_ba .PdfObjectName (gsName ));};DrawPathWithCreator (_gaf ,_fea );_fea .Add_h ();if _gfe .FillEnabled &&_gfe .BorderEnabled {_fea .Add_B ();}else if _gfe .FillEnabled {_fea .Add_f ();}else if _gfe .BorderEnabled {_fea .Add_S ();};_fea .Add_Q ();return _fea .Bytes (),_gaf .GetBoundingBox ().ToPdfRectangle (),nil ;};
|
||||
|
||||
// GetPointNumber returns the path point at the index specified by number.
|
||||
// The index is 1-based.
|
||||
func (_bb Path )GetPointNumber (number int )Point {if number < 1||number > len (_bb .Points ){return Point {};};return _bb .Points [number -1];};
|
||||
|
||||
// Length returns the number of points in the path.
|
||||
func (_afe Path )Length ()int {return len (_afe .Points )};
|
||||
|
||||
// Rectangle is a shape with a specified Width and Height and a lower left corner at (X,Y) that can be
|
||||
// drawn to a PDF content stream. The rectangle can optionally have a border and a filling color.
|
||||
// The Width/Height includes the border (if any specified), i.e. is positioned inside.
|
||||
type Rectangle struct{X float64 ;Y float64 ;Width float64 ;Height float64 ;FillEnabled bool ;FillColor *_d .PdfColorDeviceRGB ;BorderEnabled bool ;BorderWidth float64 ;BorderColor *_d .PdfColorDeviceRGB ;Opacity float64 ;};
|
||||
|
||||
// GetBoundingBox returns the bounding box of the Bezier path.
|
||||
func (_ab CubicBezierPath )GetBoundingBox ()Rectangle {_gad :=Rectangle {};_dd :=0.0;_efe :=0.0;_fed :=0.0;_fb :=0.0;for _cac ,_cb :=range _ab .Curves {_af :=_cb .GetBounds ();if _cac ==0{_dd =_af .Llx ;_efe =_af .Urx ;_fed =_af .Lly ;_fb =_af .Ury ;continue ;};if _af .Llx < _dd {_dd =_af .Llx ;};if _af .Urx > _efe {_efe =_af .Urx ;};if _af .Lly < _fed {_fed =_af .Lly ;};if _af .Ury > _fb {_fb =_af .Ury ;};};_gad .X =_dd ;_gad .Y =_fed ;_gad .Width =_efe -_dd ;_gad .Height =_fb -_fed ;return _gad ;};
|
||||
|
||||
// Rotate rotates the vector by the specified angle.
|
||||
func (_gcc Vector )Rotate (phi float64 )Vector {_afea :=_gcc .Magnitude ();_eebd :=_gcc .GetPolarAngle ();return NewVectorPolar (_afea ,_eebd +phi );};
|
||||
|
||||
// Polyline defines a slice of points that are connected as straight lines.
|
||||
type Polyline struct{Points []Point ;LineColor *_d .PdfColorDeviceRGB ;LineWidth float64 ;};
|
||||
|
||||
// Point represents a two-dimensional point.
|
||||
type Point struct{X float64 ;Y float64 ;};
|
||||
|
||||
// GetBoundingBox returns the bounding box of the path.
|
||||
func (_bc Path )GetBoundingBox ()BoundingBox {_cacb :=BoundingBox {};_ege :=0.0;_gc :=0.0;_gf :=0.0;_gca :=0.0;for _dc ,_gdg :=range _bc .Points {if _dc ==0{_ege =_gdg .X ;_gc =_gdg .X ;_gf =_gdg .Y ;_gca =_gdg .Y ;continue ;};if _gdg .X < _ege {_ege =_gdg .X ;};if _gdg .X > _gc {_gc =_gdg .X ;};if _gdg .Y < _gf {_gf =_gdg .Y ;};if _gdg .Y > _gca {_gca =_gdg .Y ;};};_cacb .X =_ege ;_cacb .Y =_gf ;_cacb .Width =_gc -_ege ;_cacb .Height =_gca -_gf ;return _cacb ;};
|
||||
|
||||
// Add adds the specified vector to the current one and returns the result.
|
||||
func (_bdagf Vector )Add (other Vector )Vector {_bdagf .Dx +=other .Dx ;_bdagf .Dy +=other .Dy ;return _bdagf ;};
|
||||
|
||||
// DrawBezierPathWithCreator makes the bezier path with the content creator.
|
||||
// Adds the PDF commands to draw the path to the creator instance.
|
||||
func DrawBezierPathWithCreator (bpath CubicBezierPath ,creator *_c .ContentCreator ){for _ffd ,_gcd :=range bpath .Curves {if _ffd ==0{creator .Add_m (_gcd .P0 .X ,_gcd .P0 .Y );};creator .Add_c (_gcd .P1 .X ,_gcd .P1 .Y ,_gcd .P2 .X ,_gcd .P2 .Y ,_gcd .P3 .X ,_gcd .P3 .Y );};};
|
||||
|
||||
// Copy returns a clone of the Bezier path.
|
||||
func (_ga CubicBezierPath )Copy ()CubicBezierPath {_bf :=CubicBezierPath {};_bf .Curves =[]CubicBezierCurve {};for _ ,_cge :=range _ga .Curves {_bf .Curves =append (_bf .Curves ,_cge );};return _bf ;};
|
||||
|
||||
// NewVectorPolar returns a new vector calculated from the specified
|
||||
// magnitude and angle.
|
||||
func NewVectorPolar (length float64 ,theta float64 )Vector {_ccaa :=Vector {};_ccaa .Dx =length *_bd .Cos (theta );_ccaa .Dy =length *_bd .Sin (theta );return _ccaa ;};const (LineEndingStyleNone LineEndingStyle =0;LineEndingStyleArrow LineEndingStyle =1;LineEndingStyleButt LineEndingStyle =2;);
|
||||
|
||||
// GetBounds returns the bounding box of the Bezier curve.
|
||||
func (_a CubicBezierCurve )GetBounds ()_d .PdfRectangle {_de :=_a .P0 .X ;_ee :=_a .P0 .X ;_cg :=_a .P0 .Y ;_bda :=_a .P0 .Y ;for _cc :=0.0;_cc <=1.0;_cc +=0.001{Rx :=_a .P0 .X *_bd .Pow (1-_cc ,3)+_a .P1 .X *3*_cc *_bd .Pow (1-_cc ,2)+_a .P2 .X *3*_bd .Pow (_cc ,2)*(1-_cc )+_a .P3 .X *_bd .Pow (_cc ,3);Ry :=_a .P0 .Y *_bd .Pow (1-_cc ,3)+_a .P1 .Y *3*_cc *_bd .Pow (1-_cc ,2)+_a .P2 .Y *3*_bd .Pow (_cc ,2)*(1-_cc )+_a .P3 .Y *_bd .Pow (_cc ,3);if Rx < _de {_de =Rx ;};if Rx > _ee {_ee =Rx ;};if Ry < _cg {_cg =Ry ;};if Ry > _bda {_bda =Ry ;};};_fe :=_d .PdfRectangle {};_fe .Llx =_de ;_fe .Lly =_cg ;_fe .Urx =_ee ;_fe .Ury =_bda ;return _fe ;};
|
||||
|
||||
// Offset shifts the path with the specified offsets.
|
||||
func (_ac Path )Offset (offX ,offY float64 )Path {for _gd ,_bgg :=range _ac .Points {_ac .Points [_gd ]=_bgg .Add (offX ,offY );};return _ac ;};
|
||||
|
||||
// Add shifts the coordinates of the point with dx, dy and returns the result.
|
||||
func (_ceg Point )Add (dx ,dy float64 )Point {_ceg .X +=dx ;_ceg .Y +=dy ;return _ceg };
|
||||
|
||||
// DrawPathWithCreator makes the path with the content creator.
|
||||
// Adds the PDF commands to draw the path to the creator instance.
|
||||
func DrawPathWithCreator (path Path ,creator *_c .ContentCreator ){for _fa ,_baa :=range path .Points {if _fa ==0{creator .Add_m (_baa .X ,_baa .Y );}else {creator .Add_l (_baa .X ,_baa .Y );};};};
|
||||
|
||||
// CubicBezierCurve is defined by:
|
||||
// R(t) = P0*(1-t)^3 + P1*3*t*(1-t)^2 + P2*3*t^2*(1-t) + P3*t^3
|
||||
// where P0 is the current point, P1, P2 control points and P3 the final point.
|
||||
type CubicBezierCurve struct{P0 Point ;P1 Point ;P2 Point ;P3 Point ;};
|
||||
|
||||
// Add shifts the coordinates of the point with dx, dy and returns the result.
|
||||
func (_gda Point )Add (dx ,dy float64 )Point {_gda .X +=dx ;_gda .Y +=dy ;return _gda };
|
||||
|
||||
// Draw draws the composite Bezier curve. A graphics state name can be
|
||||
// specified for setting the curve properties (e.g. setting the opacity).
|
||||
// Otherwise leave empty (""). Returns the content stream as a byte array and
|
||||
// the curve bounding box.
|
||||
func (_gdaf PolyBezierCurve )Draw (gsName string )([]byte ,*_bg .PdfRectangle ,error ){if _gdaf .BorderColor ==nil {_gdaf .BorderColor =_bg .NewPdfColorDeviceRGB (0,0,0);};_fbd :=NewCubicBezierPath ();for _ ,_ag :=range _gdaf .Curves {_fbd =_fbd .AppendCurve (_ag );};_ga :=_c .NewContentCreator ();_ga .Add_q ();_gdaf .FillEnabled =_gdaf .FillEnabled &&_gdaf .FillColor !=nil ;if _gdaf .FillEnabled {_ga .Add_rg (_gdaf .FillColor .R (),_gdaf .FillColor .G (),_gdaf .FillColor .B ());};_ga .Add_RG (_gdaf .BorderColor .R (),_gdaf .BorderColor .G (),_gdaf .BorderColor .B ());_ga .Add_w (_gdaf .BorderWidth );if len (gsName )> 1{_ga .Add_gs (_f .PdfObjectName (gsName ));};for _ ,_cdd :=range _fbd .Curves {_ga .Add_m (_cdd .P0 .X ,_cdd .P0 .Y );_ga .Add_c (_cdd .P1 .X ,_cdd .P1 .Y ,_cdd .P2 .X ,_cdd .P2 .Y ,_cdd .P3 .X ,_cdd .P3 .Y );};if _gdaf .FillEnabled {_ga .Add_h ();_ga .Add_B ();}else {_ga .Add_S ();};_ga .Add_Q ();return _ga .Bytes (),_fbd .GetBoundingBox ().ToPdfRectangle (),nil ;};
|
||||
|
||||
// NewVector returns a new vector with the direction specified by dx and dy.
|
||||
func NewVector (dx ,dy float64 )Vector {_cgg :=Vector {};_cgg .Dx =dx ;_cgg .Dy =dy ;return _cgg };
|
||||
|
||||
// Copy returns a clone of the path.
|
||||
func (_be Path )Copy ()Path {_de :=Path {};_de .Points =[]Point {};for _ ,_dge :=range _be .Points {_de .Points =append (_de .Points ,_dge );};return _de ;};
|
||||
|
||||
// Rotate returns a new Point at `p` rotated by `theta` degrees.
|
||||
func (_eed Point )Rotate (theta float64 )Point {_aeb :=_e .NewPoint (_eed .X ,_eed .Y ).Rotate (theta );return NewPoint (_aeb .X ,_aeb .Y );};
|
||||
|
||||
// NewPath returns a new empty path.
|
||||
func NewPath ()Path {return Path {}};
|
||||
|
||||
// Copy returns a clone of the Bezier path.
|
||||
func (_ee CubicBezierPath )Copy ()CubicBezierPath {_dg :=CubicBezierPath {};_dg .Curves =[]CubicBezierCurve {};for _ ,_abb :=range _ee .Curves {_dg .Curves =append (_dg .Curves ,_abb );};return _dg ;};
|
||||
|
||||
// NewCubicBezierCurve returns a new cubic Bezier curve.
|
||||
func NewCubicBezierCurve (x0 ,y0 ,x1 ,y1 ,x2 ,y2 ,x3 ,y3 float64 )CubicBezierCurve {_fa :=CubicBezierCurve {};_fa .P0 =NewPoint (x0 ,y0 );_fa .P1 =NewPoint (x1 ,y1 );_fa .P2 =NewPoint (x2 ,y2 );_fa .P3 =NewPoint (x3 ,y3 );return _fa ;};
|
||||
|
||||
// PolyBezierCurve represents a composite curve that is the result of
|
||||
// joining multiple cubic Bezier curves.
|
||||
type PolyBezierCurve struct{Curves []CubicBezierCurve ;BorderWidth float64 ;BorderColor *_bg .PdfColorDeviceRGB ;FillEnabled bool ;FillColor *_bg .PdfColorDeviceRGB ;};
|
||||
|
||||
// Circle represents a circle shape with fill and border properties that can be drawn to a PDF content stream.
|
||||
type Circle struct{X float64 ;Y float64 ;Width float64 ;Height float64 ;FillEnabled bool ;FillColor *_bg .PdfColorDeviceRGB ;BorderEnabled bool ;BorderWidth float64 ;BorderColor *_bg .PdfColorDeviceRGB ;Opacity float64 ;};
|
||||
|
||||
// NewVectorBetween returns a new vector with the direction specified by
|
||||
// the subtraction of point a from point b (b-a).
|
||||
func NewVectorBetween (a Point ,b Point )Vector {_gdeg :=Vector {};_gdeg .Dx =b .X -a .X ;_gdeg .Dy =b .Y -a .Y ;return _gdeg ;};
|
||||
|
||||
// AppendPoint adds the specified point to the path.
|
||||
func (_cd Path )AppendPoint (point Point )Path {_cd .Points =append (_cd .Points ,point );return _cd };
|
||||
|
||||
// FlipX flips the sign of the Dx component of the vector.
|
||||
func (_cdae Vector )FlipX ()Vector {_cdae .Dx =-_cdae .Dx ;return _cdae };
|
||||
|
||||
// Scale scales the vector by the specified factor.
|
||||
func (_fe Vector )Scale (factor float64 )Vector {_ggde :=_fe .Magnitude ();_eda :=_fe .GetPolarAngle ();_fe .Dx =factor *_ggde *_b .Cos (_eda );_fe .Dy =factor *_ggde *_b .Sin (_eda );return _fe ;};
|
||||
|
||||
// AddVector adds vector to a point.
|
||||
func (_eeg Point )AddVector (v Vector )Point {_eeg .X +=v .Dx ;_eeg .Y +=v .Dy ;return _eeg };
|
||||
|
||||
// Draw draws the polygon. A graphics state name can be specified for
|
||||
// setting the polygon properties (e.g. setting the opacity). Otherwise leave
|
||||
// empty (""). Returns the content stream as a byte array and the polygon
|
||||
// bounding box.
|
||||
func (_gbc Polygon )Draw (gsName string )([]byte ,*_bg .PdfRectangle ,error ){_beb :=_c .NewContentCreator ();_beb .Add_q ();_gbc .FillEnabled =_gbc .FillEnabled &&_gbc .FillColor !=nil ;if _gbc .FillEnabled {_beb .Add_rg (_gbc .FillColor .R (),_gbc .FillColor .G (),_gbc .FillColor .B ());};_gbc .BorderEnabled =_gbc .BorderEnabled &&_gbc .BorderColor !=nil ;if _gbc .BorderEnabled {_beb .Add_RG (_gbc .BorderColor .R (),_gbc .BorderColor .G (),_gbc .BorderColor .B ());_beb .Add_w (_gbc .BorderWidth );};if len (gsName )> 1{_beb .Add_gs (_f .PdfObjectName (gsName ));};_fgd :=NewPath ();for _ ,_bcb :=range _gbc .Points {for _gag ,_edb :=range _bcb {_fgd =_fgd .AppendPoint (_edb );if _gag ==0{_beb .Add_m (_edb .X ,_edb .Y );}else {_beb .Add_l (_edb .X ,_edb .Y );};};_beb .Add_h ();};if _gbc .FillEnabled &&_gbc .BorderEnabled {_beb .Add_B ();}else if _gbc .FillEnabled {_beb .Add_f ();}else if _gbc .BorderEnabled {_beb .Add_S ();};_beb .Add_Q ();return _beb .Bytes (),_fgd .GetBoundingBox ().ToPdfRectangle (),nil ;};
|
||||
|
||||
// Draw draws the line to PDF contentstream. Generates the content stream which can be used in page contents or
|
||||
// appearance stream of annotation. Returns the stream content, XForm bounding box (local), bounding box and an error
|
||||
// if one occurred.
|
||||
func (_gdac Line )Draw (gsName string )([]byte ,*_bg .PdfRectangle ,error ){_aga ,_dfa :=_gdac .X1 ,_gdac .X2 ;_gaa ,_cf :=_gdac .Y1 ,_gdac .Y2 ;_gff :=_cf -_gaa ;_bga :=_dfa -_aga ;_dba :=_b .Atan2 (_gff ,_bga );L :=_b .Sqrt (_b .Pow (_bga ,2.0)+_b .Pow (_gff ,2.0));_edg :=_gdac .LineWidth ;_aa :=_b .Pi ;_ef :=1.0;if _bga < 0{_ef *=-1.0;};if _gff < 0{_ef *=-1.0;};VsX :=_ef *(-_edg /2*_b .Cos (_dba +_aa /2));VsY :=_ef *(-_edg /2*_b .Sin (_dba +_aa /2)+_edg *_b .Sin (_dba +_aa /2));V1X :=VsX +_edg /2*_b .Cos (_dba +_aa /2);V1Y :=VsY +_edg /2*_b .Sin (_dba +_aa /2);V2X :=VsX +_edg /2*_b .Cos (_dba +_aa /2)+L *_b .Cos (_dba );V2Y :=VsY +_edg /2*_b .Sin (_dba +_aa /2)+L *_b .Sin (_dba );V3X :=VsX +_edg /2*_b .Cos (_dba +_aa /2)+L *_b .Cos (_dba )+_edg *_b .Cos (_dba -_aa /2);V3Y :=VsY +_edg /2*_b .Sin (_dba +_aa /2)+L *_b .Sin (_dba )+_edg *_b .Sin (_dba -_aa /2);V4X :=VsX +_edg /2*_b .Cos (_dba -_aa /2);V4Y :=VsY +_edg /2*_b .Sin (_dba -_aa /2);_fba :=NewPath ();_fba =_fba .AppendPoint (NewPoint (V1X ,V1Y ));_fba =_fba .AppendPoint (NewPoint (V2X ,V2Y ));_fba =_fba .AppendPoint (NewPoint (V3X ,V3Y ));_fba =_fba .AppendPoint (NewPoint (V4X ,V4Y ));_ba :=_gdac .LineEndingStyle1 ;_cfb :=_gdac .LineEndingStyle2 ;_bea :=3*_edg ;_gc :=3*_edg ;_gba :=(_gc -_edg )/2;if _cfb ==LineEndingStyleArrow {_gea :=_fba .GetPointNumber (2);_bf :=NewVectorPolar (_bea ,_dba +_aa );_ffa :=_gea .AddVector (_bf );_cg :=NewVectorPolar (_gc /2,_dba +_aa /2);_fge :=NewVectorPolar (_bea ,_dba );_dbd :=NewVectorPolar (_gba ,_dba +_aa /2);_fac :=_ffa .AddVector (_dbd );_bgdd :=_fge .Add (_cg .Flip ());_afg :=_fac .AddVector (_bgdd );_gffa :=_cg .Scale (2).Flip ().Add (_bgdd .Flip ());_bfg :=_afg .AddVector (_gffa );_geb :=_ffa .AddVector (NewVectorPolar (_edg ,_dba -_aa /2));_gde :=NewPath ();_gde =_gde .AppendPoint (_fba .GetPointNumber (1));_gde =_gde .AppendPoint (_ffa );_gde =_gde .AppendPoint (_fac );_gde =_gde .AppendPoint (_afg );_gde =_gde .AppendPoint (_bfg );_gde =_gde .AppendPoint (_geb );_gde =_gde .AppendPoint (_fba .GetPointNumber (4));_fba =_gde ;};if _ba ==LineEndingStyleArrow {_cga :=_fba .GetPointNumber (1);_cba :=_fba .GetPointNumber (_fba .Length ());_bca :=NewVectorPolar (_edg /2,_dba +_aa +_aa /2);_abg :=_cga .AddVector (_bca );_beae :=NewVectorPolar (_bea ,_dba ).Add (NewVectorPolar (_gc /2,_dba +_aa /2));_bed :=_abg .AddVector (_beae );_caf :=NewVectorPolar (_gba ,_dba -_aa /2);_gaaa :=_bed .AddVector (_caf );_bgb :=NewVectorPolar (_bea ,_dba );_fd :=_cba .AddVector (_bgb );_ccb :=NewVectorPolar (_gba ,_dba +_aa +_aa /2);_dda :=_fd .AddVector (_ccb );_egde :=_abg ;_gaf :=NewPath ();_gaf =_gaf .AppendPoint (_abg );_gaf =_gaf .AppendPoint (_bed );_gaf =_gaf .AppendPoint (_gaaa );for _ ,_ffad :=range _fba .Points [1:len (_fba .Points )-1]{_gaf =_gaf .AppendPoint (_ffad );};_gaf =_gaf .AppendPoint (_fd );_gaf =_gaf .AppendPoint (_dda );_gaf =_gaf .AppendPoint (_egde );_fba =_gaf ;};_bgg :=_c .NewContentCreator ();_bgg .Add_q ().Add_rg (_gdac .LineColor .R (),_gdac .LineColor .G (),_gdac .LineColor .B ());if len (gsName )> 1{_bgg .Add_gs (_f .PdfObjectName (gsName ));};_fba =_fba .Offset (_gdac .X1 ,_gdac .Y1 );_fgc :=_fba .GetBoundingBox ();DrawPathWithCreator (_fba ,_bgg );if _gdac .LineStyle ==LineStyleDashed {_bgg .Add_d ([]int64 {1,1},0).Add_S ().Add_f ().Add_Q ();}else {_bgg .Add_f ().Add_Q ();};return _bgg .Bytes (),_fgc .ToPdfRectangle (),nil ;};
|
||||
|
||||
// GetBoundingBox returns the bounding box of the path.
|
||||
func (_acg Path )GetBoundingBox ()BoundingBox {_gbg :=BoundingBox {};_adf :=0.0;_fg :=0.0;_egd :=0.0;_deg :=0.0;for _ff ,_eac :=range _acg .Points {if _ff ==0{_adf =_eac .X ;_fg =_eac .X ;_egd =_eac .Y ;_deg =_eac .Y ;continue ;};if _eac .X < _adf {_adf =_eac .X ;};if _eac .X > _fg {_fg =_eac .X ;};if _eac .Y < _egd {_egd =_eac .Y ;};if _eac .Y > _deg {_deg =_eac .Y ;};};_gbg .X =_adf ;_gbg .Y =_egd ;_gbg .Width =_fg -_adf ;_gbg .Height =_deg -_egd ;return _gbg ;};
|
||||
|
||||
// Polygon is a multi-point shape that can be drawn to a PDF content stream.
|
||||
type Polygon struct{Points [][]Point ;FillEnabled bool ;FillColor *_bg .PdfColorDeviceRGB ;BorderEnabled bool ;BorderColor *_bg .PdfColorDeviceRGB ;BorderWidth float64 ;};
|
||||
|
||||
// NewCubicBezierPath returns a new empty cubic Bezier path.
|
||||
func NewCubicBezierPath ()CubicBezierPath {_ed :=CubicBezierPath {};_ed .Curves =[]CubicBezierCurve {};return _ed ;};
|
||||
|
||||
// Point represents a two-dimensional point.
|
||||
type Point struct{X float64 ;Y float64 ;};
|
||||
|
||||
// LineEndingStyle defines the line ending style for lines.
|
||||
// The currently supported line ending styles are None, Arrow (ClosedArrow) and Butt.
|
||||
type LineEndingStyle int ;
|
||||
|
||||
// BasicLine defines a line between point 1 (X1,Y1) and point 2 (X2,Y2). The line has a specified width, color and opacity.
|
||||
type BasicLine struct{X1 float64 ;Y1 float64 ;X2 float64 ;Y2 float64 ;LineColor *_bg .PdfColorDeviceRGB ;Opacity float64 ;LineWidth float64 ;LineStyle LineStyle ;};
|
||||
|
||||
// Draw draws the circle. Can specify a graphics state (gsName) for setting opacity etc. Otherwise leave empty ("").
|
||||
// Returns the content stream as a byte array, the bounding box and an error on failure.
|
||||
func (_cc Circle )Draw (gsName string )([]byte ,*_bg .PdfRectangle ,error ){_da :=_cc .Width /2;_ge :=_cc .Height /2;if _cc .BorderEnabled {_da -=_cc .BorderWidth /2;_ge -=_cc .BorderWidth /2;};_fce :=0.551784;_faa :=_da *_fce ;_ggfg :=_ge *_fce ;_acgd :=NewCubicBezierPath ();_acgd =_acgd .AppendCurve (NewCubicBezierCurve (-_da ,0,-_da ,_ggfg ,-_faa ,_ge ,0,_ge ));_acgd =_acgd .AppendCurve (NewCubicBezierCurve (0,_ge ,_faa ,_ge ,_da ,_ggfg ,_da ,0));_acgd =_acgd .AppendCurve (NewCubicBezierCurve (_da ,0,_da ,-_ggfg ,_faa ,-_ge ,0,-_ge ));_acgd =_acgd .AppendCurve (NewCubicBezierCurve (0,-_ge ,-_faa ,-_ge ,-_da ,-_ggfg ,-_da ,0));_acgd =_acgd .Offset (_da ,_ge );if _cc .BorderEnabled {_acgd =_acgd .Offset (_cc .BorderWidth /2,_cc .BorderWidth /2);};if _cc .X !=0||_cc .Y !=0{_acgd =_acgd .Offset (_cc .X ,_cc .Y );};_dce :=_c .NewContentCreator ();_dce .Add_q ();if _cc .FillEnabled {_dce .Add_rg (_cc .FillColor .R (),_cc .FillColor .G (),_cc .FillColor .B ());};if _cc .BorderEnabled {_dce .Add_RG (_cc .BorderColor .R (),_cc .BorderColor .G (),_cc .BorderColor .B ());_dce .Add_w (_cc .BorderWidth );};if len (gsName )> 1{_dce .Add_gs (_f .PdfObjectName (gsName ));};DrawBezierPathWithCreator (_acgd ,_dce );_dce .Add_h ();if _cc .FillEnabled &&_cc .BorderEnabled {_dce .Add_B ();}else if _cc .FillEnabled {_dce .Add_f ();}else if _cc .BorderEnabled {_dce .Add_S ();};_dce .Add_Q ();_ffc :=_acgd .GetBoundingBox ();if _cc .BorderEnabled {_ffc .Height +=_cc .BorderWidth ;_ffc .Width +=_cc .BorderWidth ;_ffc .X -=_cc .BorderWidth /2;_ffc .Y -=_cc .BorderWidth /2;};return _dce .Bytes (),_ffc .ToPdfRectangle (),nil ;};
|
||||
|
||||
// FlipY flips the sign of the Dy component of the vector.
|
||||
func (_fbb Vector )FlipY ()Vector {_fbb .Dy =-_fbb .Dy ;return _fbb };
|
||||
|
||||
// BoundingBox represents the smallest rectangular area that encapsulates an object.
|
||||
type BoundingBox struct{X float64 ;Y float64 ;Width float64 ;Height float64 ;};
|
||||
|
||||
// DrawPathWithCreator makes the path with the content creator.
|
||||
// Adds the PDF commands to draw the path to the creator instance.
|
||||
func DrawPathWithCreator (path Path ,creator *_c .ContentCreator ){for _acdd ,_ec :=range path .Points {if _acdd ==0{creator .Add_m (_ec .X ,_ec .Y );}else {creator .Add_l (_ec .X ,_ec .Y );};};};
|
||||
|
||||
// Offset shifts the path with the specified offsets.
|
||||
func (_ce Path )Offset (offX ,offY float64 )Path {for _eg ,_db :=range _ce .Points {_ce .Points [_eg ]=_db .Add (offX ,offY );};return _ce ;};
|
||||
|
||||
// Line defines a line shape between point 1 (X1,Y1) and point 2 (X2,Y2). The line ending styles can be none (regular line),
|
||||
// or arrows at either end. The line also has a specified width, color and opacity.
|
||||
type Line struct{X1 float64 ;Y1 float64 ;X2 float64 ;Y2 float64 ;LineColor *_bg .PdfColorDeviceRGB ;Opacity float64 ;LineWidth float64 ;LineEndingStyle1 LineEndingStyle ;LineEndingStyle2 LineEndingStyle ;LineStyle LineStyle ;};
|
||||
|
||||
// GetPointNumber returns the path point at the index specified by number.
|
||||
// The index is 1-based.
|
||||
func (_ac Path )GetPointNumber (number int )Point {if number < 1||number > len (_ac .Points ){return Point {};};return _ac .Points [number -1];};
|
||||
// Magnitude returns the magnitude of the vector.
|
||||
func (_fee Vector )Magnitude ()float64 {return _bd .Sqrt (_bd .Pow (_fee .Dx ,2.0)+_bd .Pow (_fee .Dy ,2.0));};
|
||||
|
||||
// Draw draws the polyline. A graphics state name can be specified for
|
||||
// setting the polyline properties (e.g. setting the opacity). Otherwise leave
|
||||
// empty (""). Returns the content stream as a byte array and the polyline
|
||||
// bounding box.
|
||||
func (_dbab Polyline )Draw (gsName string )([]byte ,*_bg .PdfRectangle ,error ){if _dbab .LineColor ==nil {_dbab .LineColor =_bg .NewPdfColorDeviceRGB (0,0,0);};_eagd :=NewPath ();for _ ,_fdd :=range _dbab .Points {_eagd =_eagd .AppendPoint (_fdd );};_cdc :=_c .NewContentCreator ();_cdc .Add_q ();_cdc .Add_RG (_dbab .LineColor .R (),_dbab .LineColor .G (),_dbab .LineColor .B ());_cdc .Add_w (_dbab .LineWidth );if len (gsName )> 1{_cdc .Add_gs (_f .PdfObjectName (gsName ));};DrawPathWithCreator (_eagd ,_cdc );_cdc .Add_S ();_cdc .Add_Q ();return _cdc .Bytes (),_eagd .GetBoundingBox ().ToPdfRectangle (),nil ;};
|
||||
func (_ecfg Polyline )Draw (gsName string )([]byte ,*_d .PdfRectangle ,error ){if _ecfg .LineColor ==nil {_ecfg .LineColor =_d .NewPdfColorDeviceRGB (0,0,0);};_dggc :=NewPath ();for _ ,_fgd :=range _ecfg .Points {_dggc =_dggc .AppendPoint (_fgd );};_add :=_c .NewContentCreator ();_add .Add_q ();_add .Add_RG (_ecfg .LineColor .R (),_ecfg .LineColor .G (),_ecfg .LineColor .B ());_add .Add_w (_ecfg .LineWidth );if len (gsName )> 1{_add .Add_gs (_ba .PdfObjectName (gsName ));};DrawPathWithCreator (_dggc ,_add );_add .Add_S ();_add .Add_Q ();return _add .Bytes (),_dggc .GetBoundingBox ().ToPdfRectangle (),nil ;};
|
||||
|
||||
// Magnitude returns the magnitude of the vector.
|
||||
func (_aebe Vector )Magnitude ()float64 {return _b .Sqrt (_b .Pow (_aebe .Dx ,2.0)+_b .Pow (_aebe .Dy ,2.0));};
|
||||
|
||||
// Flip changes the sign of the vector: -vector.
|
||||
func (_ffae Vector )Flip ()Vector {_gdg :=_ffae .Magnitude ();_eaf :=_ffae .GetPolarAngle ();_ffae .Dx =_gdg *_b .Cos (_eaf +_b .Pi );_ffae .Dy =_gdg *_b .Sin (_eaf +_b .Pi );return _ffae ;};
|
||||
|
||||
// GetBounds returns the bounding box of the Bezier curve.
|
||||
func (_bc CubicBezierCurve )GetBounds ()_bg .PdfRectangle {_cb :=_bc .P0 .X ;_dd :=_bc .P0 .X ;_ea :=_bc .P0 .Y ;_ca :=_bc .P0 .Y ;for _ae :=0.0;_ae <=1.0;_ae +=0.001{Rx :=_bc .P0 .X *_b .Pow (1-_ae ,3)+_bc .P1 .X *3*_ae *_b .Pow (1-_ae ,2)+_bc .P2 .X *3*_b .Pow (_ae ,2)*(1-_ae )+_bc .P3 .X *_b .Pow (_ae ,3);Ry :=_bc .P0 .Y *_b .Pow (1-_ae ,3)+_bc .P1 .Y *3*_ae *_b .Pow (1-_ae ,2)+_bc .P2 .Y *3*_b .Pow (_ae ,2)*(1-_ae )+_bc .P3 .Y *_b .Pow (_ae ,3);if Rx < _cb {_cb =Rx ;};if Rx > _dd {_dd =Rx ;};if Ry < _ea {_ea =Ry ;};if Ry > _ca {_ca =Ry ;};};_ab :=_bg .PdfRectangle {};_ab .Llx =_cb ;_ab .Lly =_ea ;_ab .Urx =_dd ;_ab .Ury =_ca ;return _ab ;};
|
||||
|
||||
// DrawBezierPathWithCreator makes the bezier path with the content creator.
|
||||
// Adds the PDF commands to draw the path to the creator instance.
|
||||
func DrawBezierPathWithCreator (bpath CubicBezierPath ,creator *_c .ContentCreator ){for _efg ,_cag :=range bpath .Curves {if _efg ==0{creator .Add_m (_cag .P0 .X ,_cag .P0 .Y );};creator .Add_c (_cag .P1 .X ,_cag .P1 .Y ,_cag .P2 .X ,_cag .P2 .Y ,_cag .P3 .X ,_cag .P3 .Y );};};
|
||||
|
||||
// AppendCurve appends the specified Bezier curve to the path.
|
||||
func (_eae CubicBezierPath )AppendCurve (curve CubicBezierCurve )CubicBezierPath {_eae .Curves =append (_eae .Curves ,curve );return _eae ;};
|
||||
|
||||
// LineStyle refers to how the line will be created.
|
||||
type LineStyle int ;
|
||||
|
||||
// Rotate rotates the vector by the specified angle.
|
||||
func (_dfd Vector )Rotate (phi float64 )Vector {_gdegb :=_dfd .Magnitude ();_ace :=_dfd .GetPolarAngle ();return NewVectorPolar (_gdegb ,_ace +phi );};
|
||||
|
||||
// AddOffsetXY adds X,Y offset to all points on a curve.
|
||||
func (_d CubicBezierCurve )AddOffsetXY (offX ,offY float64 )CubicBezierCurve {_d .P0 .X +=offX ;_d .P1 .X +=offX ;_d .P2 .X +=offX ;_d .P3 .X +=offX ;_d .P0 .Y +=offY ;_d .P1 .Y +=offY ;_d .P2 .Y +=offY ;_d .P3 .Y +=offY ;return _d ;};
|
||||
|
||||
// Length returns the number of points in the path.
|
||||
func (_ade Path )Length ()int {return len (_ade .Points )};
|
||||
// Vector represents a two-dimensional vector.
|
||||
type Vector struct{Dx float64 ;Dy float64 ;};
|
||||
|
||||
// CubicBezierPath represents a collection of cubic Bezier curves.
|
||||
type CubicBezierPath struct{Curves []CubicBezierCurve ;};
|
||||
|
||||
// Offset shifts the Bezier path with the specified offsets.
|
||||
func (_af CubicBezierPath )Offset (offX ,offY float64 )CubicBezierPath {for _gb ,_dc :=range _af .Curves {_af .Curves [_gb ]=_dc .AddOffsetXY (offX ,offY );};return _af ;};
|
||||
|
||||
// GetBoundingBox returns the bounding box of the Bezier path.
|
||||
func (_fb CubicBezierPath )GetBoundingBox ()Rectangle {_fc :=Rectangle {};_eb :=0.0;_eag :=0.0;_gge :=0.0;_gf :=0.0;for _ggf ,_ad :=range _fb .Curves {_df :=_ad .GetBounds ();if _ggf ==0{_eb =_df .Llx ;_eag =_df .Urx ;_gge =_df .Lly ;_gf =_df .Ury ;continue ;};if _df .Llx < _eb {_eb =_df .Llx ;};if _df .Urx > _eag {_eag =_df .Urx ;};if _df .Lly < _gge {_gge =_df .Lly ;};if _df .Ury > _gf {_gf =_df .Ury ;};};_fc .X =_eb ;_fc .Y =_gge ;_fc .Width =_eag -_eb ;_fc .Height =_gf -_gge ;return _fc ;};
|
||||
|
||||
// Polyline defines a slice of points that are connected as straight lines.
|
||||
type Polyline struct{Points []Point ;LineColor *_bg .PdfColorDeviceRGB ;LineWidth float64 ;};
|
||||
|
||||
// Add adds the specified vector to the current one and returns the result.
|
||||
func (_gbe Vector )Add (other Vector )Vector {_gbe .Dx +=other .Dx ;_gbe .Dy +=other .Dy ;return _gbe };
|
||||
|
||||
// Vector represents a two-dimensional vector.
|
||||
type Vector struct{Dx float64 ;Dy float64 ;};func (_gbf Point )String ()string {return _g .Sprintf ("(\u0025\u002e\u0031\u0066\u002c\u0025\u002e\u0031\u0066\u0029",_gbf .X ,_gbf .Y );};
|
||||
|
||||
// GetPolarAngle returns the angle the magnitude of the vector forms with the
|
||||
// positive X-axis going counterclockwise.
|
||||
func (_abc Vector )GetPolarAngle ()float64 {return _b .Atan2 (_abc .Dy ,_abc .Dx )};const (LineEndingStyleNone LineEndingStyle =0;LineEndingStyleArrow LineEndingStyle =1;LineEndingStyleButt LineEndingStyle =2;);
|
||||
func (_dgeb Vector )GetPolarAngle ()float64 {return _bd .Atan2 (_dgeb .Dy ,_dgeb .Dx )};
|
||||
|
||||
// Rectangle is a shape with a specified Width and Height and a lower left corner at (X,Y) that can be
|
||||
// drawn to a PDF content stream. The rectangle can optionally have a border and a filling color.
|
||||
// The Width/Height includes the border (if any specified), i.e. is positioned inside.
|
||||
type Rectangle struct{X float64 ;Y float64 ;Width float64 ;Height float64 ;FillEnabled bool ;FillColor *_bg .PdfColorDeviceRGB ;BorderEnabled bool ;BorderWidth float64 ;BorderColor *_bg .PdfColorDeviceRGB ;Opacity float64 ;};
|
||||
// Draw draws the composite Bezier curve. A graphics state name can be
|
||||
// specified for setting the curve properties (e.g. setting the opacity).
|
||||
// Otherwise leave empty (""). Returns the content stream as a byte array and
|
||||
// the curve bounding box.
|
||||
func (_gff PolyBezierCurve )Draw (gsName string )([]byte ,*_d .PdfRectangle ,error ){if _gff .BorderColor ==nil {_gff .BorderColor =_d .NewPdfColorDeviceRGB (0,0,0);};_ede :=NewCubicBezierPath ();for _ ,_cgd :=range _gff .Curves {_ede =_ede .AppendCurve (_cgd );};_fbd :=_c .NewContentCreator ();_fbd .Add_q ();_gff .FillEnabled =_gff .FillEnabled &&_gff .FillColor !=nil ;if _gff .FillEnabled {_fbd .Add_rg (_gff .FillColor .R (),_gff .FillColor .G (),_gff .FillColor .B ());};_fbd .Add_RG (_gff .BorderColor .R (),_gff .BorderColor .G (),_gff .BorderColor .B ());_fbd .Add_w (_gff .BorderWidth );if len (gsName )> 1{_fbd .Add_gs (_ba .PdfObjectName (gsName ));};for _ ,_ffb :=range _ede .Curves {_fbd .Add_m (_ffb .P0 .X ,_ffb .P0 .Y );_fbd .Add_c (_ffb .P1 .X ,_ffb .P1 .Y ,_ffb .P2 .X ,_ffb .P2 .Y ,_ffb .P3 .X ,_ffb .P3 .Y );};if _gff .FillEnabled {_fbd .Add_h ();_fbd .Add_B ();}else {_fbd .Add_S ();};_fbd .Add_Q ();return _fbd .Bytes (),_ede .GetBoundingBox ().ToPdfRectangle (),nil ;};
|
||||
|
||||
// Draw draws the rectangle. Can specify a graphics state (gsName) for setting opacity etc.
|
||||
// Otherwise leave empty (""). Returns the content stream as a byte array, bounding box and an error on failure.
|
||||
func (_def Rectangle )Draw (gsName string )([]byte ,*_bg .PdfRectangle ,error ){_age :=NewPath ();_age =_age .AppendPoint (NewPoint (0,0));_age =_age .AppendPoint (NewPoint (0,_def .Height ));_age =_age .AppendPoint (NewPoint (_def .Width ,_def .Height ));_age =_age .AppendPoint (NewPoint (_def .Width ,0));_age =_age .AppendPoint (NewPoint (0,0));if _def .X !=0||_def .Y !=0{_age =_age .Offset (_def .X ,_def .Y );};_bgd :=_c .NewContentCreator ();_bgd .Add_q ();if _def .FillEnabled {_bgd .Add_rg (_def .FillColor .R (),_def .FillColor .G (),_def .FillColor .B ());};if _def .BorderEnabled {_bgd .Add_RG (_def .BorderColor .R (),_def .BorderColor .G (),_def .BorderColor .B ());_bgd .Add_w (_def .BorderWidth );};if len (gsName )> 1{_bgd .Add_gs (_f .PdfObjectName (gsName ));};DrawPathWithCreator (_age ,_bgd );_bgd .Add_h ();if _def .FillEnabled &&_def .BorderEnabled {_bgd .Add_B ();}else if _def .FillEnabled {_bgd .Add_f ();}else if _def .BorderEnabled {_bgd .Add_S ();};_bgd .Add_Q ();return _bgd .Bytes (),_age .GetBoundingBox ().ToPdfRectangle (),nil ;};
|
||||
// Draw draws the circle. Can specify a graphics state (gsName) for setting opacity etc. Otherwise leave empty ("").
|
||||
// Returns the content stream as a byte array, the bounding box and an error on failure.
|
||||
func (_fba Circle )Draw (gsName string )([]byte ,*_d .PdfRectangle ,error ){_cbd :=_fba .Width /2;_cd :=_fba .Height /2;if _fba .BorderEnabled {_cbd -=_fba .BorderWidth /2;_cd -=_fba .BorderWidth /2;};_bde :=0.551784;_bag :=_cbd *_bde ;_ddc :=_cd *_bde ;_aca :=NewCubicBezierPath ();_aca =_aca .AppendCurve (NewCubicBezierCurve (-_cbd ,0,-_cbd ,_ddc ,-_bag ,_cd ,0,_cd ));_aca =_aca .AppendCurve (NewCubicBezierCurve (0,_cd ,_bag ,_cd ,_cbd ,_ddc ,_cbd ,0));_aca =_aca .AppendCurve (NewCubicBezierCurve (_cbd ,0,_cbd ,-_ddc ,_bag ,-_cd ,0,-_cd ));_aca =_aca .AppendCurve (NewCubicBezierCurve (0,-_cd ,-_bag ,-_cd ,-_cbd ,-_ddc ,-_cbd ,0));_aca =_aca .Offset (_cbd ,_cd );if _fba .BorderEnabled {_aca =_aca .Offset (_fba .BorderWidth /2,_fba .BorderWidth /2);};if _fba .X !=0||_fba .Y !=0{_aca =_aca .Offset (_fba .X ,_fba .Y );};_gg :=_c .NewContentCreator ();_gg .Add_q ();if _fba .FillEnabled {_gg .Add_rg (_fba .FillColor .R (),_fba .FillColor .G (),_fba .FillColor .B ());};if _fba .BorderEnabled {_gg .Add_RG (_fba .BorderColor .R (),_fba .BorderColor .G (),_fba .BorderColor .B ());_gg .Add_w (_fba .BorderWidth );};if len (gsName )> 1{_gg .Add_gs (_ba .PdfObjectName (gsName ));};DrawBezierPathWithCreator (_aca ,_gg );_gg .Add_h ();if _fba .FillEnabled &&_fba .BorderEnabled {_gg .Add_B ();}else if _fba .FillEnabled {_gg .Add_f ();}else if _fba .BorderEnabled {_gg .Add_S ();};_gg .Add_Q ();_dge :=_aca .GetBoundingBox ();if _fba .BorderEnabled {_dge .Height +=_fba .BorderWidth ;_dge .Width +=_fba .BorderWidth ;_dge .X -=_fba .BorderWidth /2;_dge .Y -=_fba .BorderWidth /2;};return _gg .Bytes (),_dge .ToPdfRectangle (),nil ;};
|
||||
|
||||
// NewVectorPolar returns a new vector calculated from the specified
|
||||
// magnitude and angle.
|
||||
func NewVectorPolar (length float64 ,theta float64 )Vector {_bcd :=Vector {};_bcd .Dx =length *_b .Cos (theta );_bcd .Dy =length *_b .Sin (theta );return _bcd ;};
|
||||
// Path consists of straight line connections between each point defined in an array of points.
|
||||
type Path struct{Points []Point ;};
|
||||
|
||||
// NewCubicBezierCurve returns a new cubic Bezier curve.
|
||||
func NewCubicBezierCurve (x0 ,y0 ,x1 ,y1 ,x2 ,y2 ,x3 ,y3 float64 )CubicBezierCurve {_f :=CubicBezierCurve {};_f .P0 =NewPoint (x0 ,y0 );_f .P1 =NewPoint (x1 ,y1 );_f .P2 =NewPoint (x2 ,y2 );_f .P3 =NewPoint (x3 ,y3 );return _f ;};
|
||||
|
||||
// BasicLine defines a line between point 1 (X1,Y1) and point 2 (X2,Y2). The line has a specified width, color and opacity.
|
||||
type BasicLine struct{X1 float64 ;Y1 float64 ;X2 float64 ;Y2 float64 ;LineColor *_d .PdfColorDeviceRGB ;Opacity float64 ;LineWidth float64 ;LineStyle LineStyle ;};
|
||||
|
||||
// Flip changes the sign of the vector: -vector.
|
||||
func (_bdeg Vector )Flip ()Vector {_gcae :=_bdeg .Magnitude ();_gb :=_bdeg .GetPolarAngle ();_bdeg .Dx =_gcae *_bd .Cos (_gb +_bd .Pi );_bdeg .Dy =_gcae *_bd .Sin (_gb +_bd .Pi );return _bdeg ;};
|
||||
|
||||
// Circle represents a circle shape with fill and border properties that can be drawn to a PDF content stream.
|
||||
type Circle struct{X float64 ;Y float64 ;Width float64 ;Height float64 ;FillEnabled bool ;FillColor *_d .PdfColorDeviceRGB ;BorderEnabled bool ;BorderWidth float64 ;BorderColor *_d .PdfColorDeviceRGB ;Opacity float64 ;};
|
||||
|
||||
// Rotate returns a new Point at `p` rotated by `theta` degrees.
|
||||
func (_dgg Point )Rotate (theta float64 )Point {_bcb :=_e .NewPoint (_dgg .X ,_dgg .Y ).Rotate (theta );return NewPoint (_bcb .X ,_bcb .Y );};
|
||||
1888
core/core.go
1888
core/core.go
File diff suppressed because one or more lines are too long
@ -9,41 +9,77 @@
|
||||
// Use of this source code is governed by the UniDoc End User License Agreement
|
||||
// terms that can be accessed at https://unidoc.io/eula/
|
||||
|
||||
package crypt ;import (_fe "crypto/aes";_g "crypto/cipher";_fd "crypto/md5";_c "crypto/rand";_ec "crypto/rc4";_a "fmt";_ff "github.com/unidoc/unipdf/v3/common";_ab "github.com/unidoc/unipdf/v3/core/security";_e "io";);func init (){_gfg ("\u0041\u0045\u0053V\u0032",_abf )};func _abf (_ac FilterDict )(Filter ,error ){if _ac .Length ==128{_ff .Log .Debug ("\u0041\u0045S\u0056\u0032\u0020c\u0072\u0079\u0070\u0074\u0020f\u0069\u006c\u0074\u0065\u0072 l\u0065\u006e\u0067\u0074\u0068\u0020\u0061\u0070\u0070\u0065\u0061\u0072\u0073\u0020\u0074\u006f\u0020\u0062e\u0020i\u006e\u0020\u0062\u0069\u0074\u0073 ra\u0074\u0068\u0065\u0072\u0020\u0074\u0068\u0061\u006e\u0020\u0062\u0079te\u0073 \u002d\u0020\u0061\u0073s\u0075m\u0069n\u0067\u0020b\u0069\u0074s \u0028\u0025\u0064\u0029",_ac .Length );_ac .Length /=8;};if _ac .Length !=0&&_ac .Length !=16{return nil ,_a .Errorf ("\u0069\u006e\u0076\u0061\u006c\u0069\u0064\u0020\u0041\u0045\u0053\u0056\u0032\u0020\u0063\u0072\u0079\u0070\u0074\u0020\u0066\u0069\u006c\u0074e\u0072\u0020\u006c\u0065\u006eg\u0074\u0068 \u0028\u0025\u0064\u0029",_ac .Length );};return filterAESV2 {},nil ;};type filterIdentity struct{};
|
||||
package crypt ;import (_d "crypto/aes";_f "crypto/cipher";_gf "crypto/md5";_de "crypto/rand";_eg "crypto/rc4";_g "fmt";_gfe "github.com/unidoc/unipdf/v3/common";_ed "github.com/unidoc/unipdf/v3/core/security";_e "io";);func init (){_cd ("\u0041\u0045\u0053V\u0032",_c )};func _dc (_fbc ,_beb uint32 ,_gcc []byte ,_bbd bool )([]byte ,error ){_cg :=make ([]byte ,len (_gcc )+5);for _gfaf :=0;_gfaf < len (_gcc );_gfaf ++{_cg [_gfaf ]=_gcc [_gfaf ];};for _ec :=0;_ec < 3;_ec ++{_gcf :=byte ((_fbc >>uint32 (8*_ec ))&0xff);_cg [_ec +len (_gcc )]=_gcf ;};for _ba :=0;_ba < 2;_ba ++{_ddc :=byte ((_beb >>uint32 (8*_ba ))&0xff);_cg [_ba +len (_gcc )+3]=_ddc ;};if _bbd {_cg =append (_cg ,0x73);_cg =append (_cg ,0x41);_cg =append (_cg ,0x6C);_cg =append (_cg ,0x54);};_gab :=_gf .New ();_gab .Write (_cg );_cga :=_gab .Sum (nil );if len (_gcc )+5< 16{return _cga [0:len (_gcc )+5],nil ;};return _cga ,nil ;};type filterIdentity struct{};
|
||||
|
||||
// PDFVersion implements Filter interface.
|
||||
func (filterAESV3 )PDFVersion ()[2]int {return [2]int {2,0}};
|
||||
|
||||
// Name implements Filter interface.
|
||||
func (filterAESV2 )Name ()string {return "\u0041\u0045\u0053V\u0032"};type filterAESV3 struct{filterAES };
|
||||
|
||||
// MakeKey implements Filter interface.
|
||||
func (_bg filterV2 )MakeKey (objNum ,genNum uint32 ,ekey []byte )([]byte ,error ){return _dc (objNum ,genNum ,ekey ,false );};func _ee (_dg FilterDict )(Filter ,error ){if _dg .Length ==256{_gfe .Log .Debug ("\u0041\u0045S\u0056\u0033\u0020c\u0072\u0079\u0070\u0074\u0020f\u0069\u006c\u0074\u0065\u0072 l\u0065\u006e\u0067\u0074\u0068\u0020\u0061\u0070\u0070\u0065\u0061\u0072\u0073\u0020\u0074\u006f\u0020\u0062e\u0020i\u006e\u0020\u0062\u0069\u0074\u0073 ra\u0074\u0068\u0065\u0072\u0020\u0074\u0068\u0061\u006e\u0020\u0062\u0079te\u0073 \u002d\u0020\u0061\u0073s\u0075m\u0069n\u0067\u0020b\u0069\u0074s \u0028\u0025\u0064\u0029",_dg .Length );_dg .Length /=8;};if _dg .Length !=0&&_dg .Length !=32{return nil ,_g .Errorf ("\u0069\u006e\u0076\u0061\u006c\u0069\u0064\u0020\u0041\u0045\u0053\u0056\u0033\u0020\u0063\u0072\u0079\u0070\u0074\u0020\u0066\u0069\u006c\u0074e\u0072\u0020\u006c\u0065\u006eg\u0074\u0068 \u0028\u0025\u0064\u0029",_dg .Length );};return filterAESV3 {},nil ;};type filterV2 struct{_fg int };
|
||||
|
||||
// HandlerVersion implements Filter interface.
|
||||
func (filterAESV3 )HandlerVersion ()(V ,R int ){V ,R =5,6;return ;};func init (){_cd ("\u0041\u0045\u0053V\u0033",_ee )};func _agc (_dec string )(filterFunc ,error ){_dege :=_bgb [string (_dec )];if _dege ==nil {return nil ,_g .Errorf ("\u0075\u006e\u0073\u0075p\u0070\u006f\u0072\u0074\u0065\u0064\u0020\u0063\u0072\u0079p\u0074 \u0066\u0069\u006c\u0074\u0065\u0072\u003a \u0025\u0071",_dec );};return _dege ,nil ;};
|
||||
|
||||
// MakeKey implements Filter interface.
|
||||
func (filterAESV3 )MakeKey (_ ,_ uint32 ,ekey []byte )([]byte ,error ){return ekey ,nil };var (_bgb =make (map[string ]filterFunc ););
|
||||
|
||||
// DecryptBytes implements Filter interface.
|
||||
func (filterV2 )DecryptBytes (buf []byte ,okey []byte )([]byte ,error ){_gac ,_fcb :=_eg .NewCipher (okey );if _fcb !=nil {return nil ,_fcb ;};_gfe .Log .Trace ("\u0052\u00434\u0020\u0044\u0065c\u0072\u0079\u0070\u0074\u003a\u0020\u0025\u0020\u0078",buf );_gac .XORKeyStream (buf ,buf );_gfe .Log .Trace ("\u0074o\u003a\u0020\u0025\u0020\u0078",buf );return buf ,nil ;};func _fb (_gca FilterDict )(Filter ,error ){if _gca .Length %8!=0{return nil ,_g .Errorf ("\u0063\u0072\u0079p\u0074\u0020\u0066\u0069\u006c\u0074\u0065\u0072\u0020\u006c\u0065\u006e\u0067\u0074\u0068\u0020\u006e\u006f\u0074\u0020\u006d\u0075\u006c\u0074\u0069\u0070\u006c\u0065\u0020o\u0066\u0020\u0038\u0020\u0028\u0025\u0064\u0029",_gca .Length );};if _gca .Length < 5||_gca .Length > 16{if _gca .Length ==40||_gca .Length ==64||_gca .Length ==128{_gfe .Log .Debug ("\u0053\u0054\u0041\u004e\u0044AR\u0044\u0020V\u0049\u004f\u004c\u0041\u0054\u0049\u004f\u004e\u003a\u0020\u0043\u0072\u0079\u0070\u0074\u0020\u004c\u0065\u006e\u0067\u0074\u0068\u0020\u0061\u0070\u0070\u0065\u0061\u0072s\u0020\u0074\u006f \u0062\u0065\u0020\u0069\u006e\u0020\u0062\u0069\u0074\u0073\u0020\u0072\u0061t\u0068\u0065\u0072\u0020\u0074h\u0061\u006e\u0020\u0062\u0079\u0074\u0065\u0073\u0020-\u0020\u0061s\u0073u\u006d\u0069\u006e\u0067\u0020\u0062\u0069t\u0073\u0020\u0028\u0025\u0064\u0029",_gca .Length );_gca .Length /=8;}else {return nil ,_g .Errorf ("\u0063\u0072\u0079\u0070\u0074\u0020\u0066\u0069\u006c\u0074\u0065\u0072\u0020\u006c\u0065\u006e\u0067\u0074h\u0020\u006e\u006f\u0074\u0020\u0069\u006e \u0072\u0061\u006e\u0067\u0065\u0020\u0034\u0030\u0020\u002d\u00201\u0032\u0038\u0020\u0062\u0069\u0074\u0020\u0028\u0025\u0064\u0029",_gca .Length );};};return filterV2 {_fg :_gca .Length },nil ;};type filterAESV2 struct{filterAES };
|
||||
|
||||
// NewFilterAESV2 creates an AES-based filter with a 128 bit key (AESV2).
|
||||
func NewFilterAESV2 ()Filter {_ga ,_ega :=_c (FilterDict {});if _ega !=nil {_gfe .Log .Error ("E\u0052\u0052\u004f\u0052\u003a\u0020\u0063\u006f\u0075l\u0064\u0020\u006e\u006f\u0074\u0020\u0063re\u0061\u0074\u0065\u0020A\u0045\u0053\u0020\u0056\u0032\u0020\u0063\u0072\u0079pt\u0020\u0066i\u006c\u0074\u0065\u0072\u003a\u0020\u0025\u0076",_ega );return filterAESV2 {};};return _ga ;};
|
||||
|
||||
// NewFilterV2 creates a RC4-based filter with a specified key length (in bytes).
|
||||
func NewFilterV2 (length int )Filter {_db ,_cab :=_fb (FilterDict {Length :length });if _cab !=nil {_gfe .Log .Error ("E\u0052\u0052\u004f\u0052\u003a\u0020\u0063\u006f\u0075l\u0064\u0020\u006e\u006f\u0074\u0020\u0063re\u0061\u0074\u0065\u0020R\u0043\u0034\u0020\u0056\u0032\u0020\u0063\u0072\u0079pt\u0020\u0066i\u006c\u0074\u0065\u0072\u003a\u0020\u0025\u0076",_cab );return filterV2 {_fg :length };};return _db ;};func (filterAES )DecryptBytes (buf []byte ,okey []byte )([]byte ,error ){_feb ,_bb :=_d .NewCipher (okey );if _bb !=nil {return nil ,_bb ;};if len (buf )< 16{_gfe .Log .Debug ("\u0045R\u0052\u004f\u0052\u0020\u0041\u0045\u0053\u0020\u0069\u006e\u0076a\u006c\u0069\u0064\u0020\u0062\u0075\u0066\u0020\u0025\u0073",buf );return buf ,_g .Errorf ("\u0041\u0045\u0053\u003a B\u0075\u0066\u0020\u006c\u0065\u006e\u0020\u003c\u0020\u0031\u0036\u0020\u0028\u0025d\u0029",len (buf ));};_be :=buf [:16];buf =buf [16:];if len (buf )%16!=0{_gfe .Log .Debug ("\u0020\u0069\u0076\u0020\u0028\u0025\u0064\u0029\u003a\u0020\u0025\u0020\u0078",len (_be ),_be );_gfe .Log .Debug ("\u0062\u0075\u0066\u0020\u0028\u0025\u0064\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );return buf ,_g .Errorf ("\u0041\u0045\u0053\u0020\u0062\u0075\u0066\u0020\u006c\u0065\u006e\u0067\u0074\u0068\u0020\u006e\u006f\u0074\u0020\u006d\u0075\u006c\u0074\u0069p\u006c\u0065\u0020\u006f\u0066 \u0031\u0036 \u0028\u0025\u0064\u0029",len (buf ));};_gee :=_f .NewCBCDecrypter (_feb ,_be );_gfe .Log .Trace ("A\u0045\u0053\u0020\u0044ec\u0072y\u0070\u0074\u0020\u0028\u0025d\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );_gfe .Log .Trace ("\u0063\u0068\u006f\u0070\u0020\u0041\u0045\u0053\u0020\u0044\u0065c\u0072\u0079\u0070\u0074\u0020\u0028\u0025\u0064\u0029\u003a \u0025\u0020\u0078",len (buf ),buf );_gee .CryptBlocks (buf ,buf );_gfe .Log .Trace ("\u0074\u006f\u0020(\u0025\u0064\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );if len (buf )==0{_gfe .Log .Trace ("\u0045\u006d\u0070\u0074\u0079\u0020b\u0075\u0066\u002c\u0020\u0072\u0065\u0074\u0075\u0072\u006e\u0069\u006e\u0067 \u0065\u006d\u0070\u0074\u0079\u0020\u0073t\u0072\u0069\u006e\u0067");return buf ,nil ;};_caf :=int (buf [len (buf )-1]);if _caf > len (buf ){_gfe .Log .Debug ("\u0049\u006c\u006c\u0065g\u0061\u006c\u0020\u0070\u0061\u0064\u0020\u006c\u0065\u006eg\u0074h\u0020\u0028\u0025\u0064\u0020\u003e\u0020%\u0064\u0029",_caf ,len (buf ));return buf ,_g .Errorf ("\u0069n\u0076a\u006c\u0069\u0064\u0020\u0070a\u0064\u0020l\u0065\u006e\u0067\u0074\u0068");};buf =buf [:len (buf )-_caf ];return buf ,nil ;};func (filterIdentity )MakeKey (objNum ,genNum uint32 ,fkey []byte )([]byte ,error ){return fkey ,nil };
|
||||
|
||||
// HandlerVersion implements Filter interface.
|
||||
func (filterAESV2 )HandlerVersion ()(V ,R int ){V ,R =4,4;return ;};
|
||||
|
||||
// KeyLength implements Filter interface.
|
||||
func (filterAESV2 )KeyLength ()int {return 128/8};func init (){_cd ("\u0056\u0032",_fb )};func _cd (_cf string ,_ede filterFunc ){if _ ,_gbf :=_bgb [_cf ];_gbf {panic ("\u0061l\u0072e\u0061\u0064\u0079\u0020\u0072e\u0067\u0069s\u0074\u0065\u0072\u0065\u0064");};_bgb [_cf ]=_ede ;};func (filterIdentity )DecryptBytes (p []byte ,okey []byte )([]byte ,error ){return p ,nil };func (filterIdentity )PDFVersion ()[2]int {return [2]int {}};
|
||||
|
||||
// HandlerVersion implements Filter interface.
|
||||
func (_gec filterV2 )HandlerVersion ()(V ,R int ){V ,R =2,3;return ;};
|
||||
|
||||
// PDFVersion implements Filter interface.
|
||||
func (filterAESV2 )PDFVersion ()[2]int {return [2]int {1,5}};
|
||||
|
||||
// KeyLength implements Filter interface.
|
||||
func (filterAESV3 )KeyLength ()int {return 256/8};
|
||||
|
||||
// NewFilter creates CryptFilter from a corresponding dictionary.
|
||||
func NewFilter (d FilterDict )(Filter ,error ){_fbe ,_fbf :=_bae (d .CFM );if _fbf !=nil {return nil ,_fbf ;};_ca ,_fbf :=_fbe (d );if _fbf !=nil {return nil ,_fbf ;};return _ca ,nil ;};
|
||||
|
||||
// KeyLength implements Filter interface.
|
||||
func (_bbe filterV2 )KeyLength ()int {return _bbe ._ade };
|
||||
// FilterDict represents information from a CryptFilter dictionary.
|
||||
type FilterDict struct{CFM string ;AuthEvent _ed .AuthEvent ;Length int ;};var _ Filter =filterAESV3 {};
|
||||
|
||||
// NewFilterAESV3 creates an AES-based filter with a 256 bit key (AESV3).
|
||||
func NewFilterAESV3 ()Filter {_fa ,_ce :=_dg (FilterDict {});if _ce !=nil {_ff .Log .Error ("E\u0052\u0052\u004f\u0052\u003a\u0020\u0063\u006f\u0075l\u0064\u0020\u006e\u006f\u0074\u0020\u0063re\u0061\u0074\u0065\u0020A\u0045\u0053\u0020\u0056\u0033\u0020\u0063\u0072\u0079pt\u0020\u0066i\u006c\u0074\u0065\u0072\u003a\u0020\u0025\u0076",_ce );return filterAESV3 {};};return _fa ;};
|
||||
func NewFilterAESV3 ()Filter {_ce ,_ge :=_ee (FilterDict {});if _ge !=nil {_gfe .Log .Error ("E\u0052\u0052\u004f\u0052\u003a\u0020\u0063\u006f\u0075l\u0064\u0020\u006e\u006f\u0074\u0020\u0063re\u0061\u0074\u0065\u0020A\u0045\u0053\u0020\u0056\u0033\u0020\u0063\u0072\u0079pt\u0020\u0066i\u006c\u0074\u0065\u0072\u003a\u0020\u0025\u0076",_ge );return filterAESV3 {};};return _ce ;};var _ Filter =filterV2 {};
|
||||
|
||||
// FilterDict represents information from a CryptFilter dictionary.
|
||||
type FilterDict struct{CFM string ;AuthEvent _ab .AuthEvent ;Length int ;};
|
||||
// NewIdentity creates an identity filter that bypasses all data without changes.
|
||||
func NewIdentity ()Filter {return filterIdentity {}};func _c (_gfa FilterDict )(Filter ,error ){if _gfa .Length ==128{_gfe .Log .Debug ("\u0041\u0045S\u0056\u0032\u0020c\u0072\u0079\u0070\u0074\u0020f\u0069\u006c\u0074\u0065\u0072 l\u0065\u006e\u0067\u0074\u0068\u0020\u0061\u0070\u0070\u0065\u0061\u0072\u0073\u0020\u0074\u006f\u0020\u0062e\u0020i\u006e\u0020\u0062\u0069\u0074\u0073 ra\u0074\u0068\u0065\u0072\u0020\u0074\u0068\u0061\u006e\u0020\u0062\u0079te\u0073 \u002d\u0020\u0061\u0073s\u0075m\u0069n\u0067\u0020b\u0069\u0074s \u0028\u0025\u0064\u0029",_gfa .Length );_gfa .Length /=8;};if _gfa .Length !=0&&_gfa .Length !=16{return nil ,_g .Errorf ("\u0069\u006e\u0076\u0061\u006c\u0069\u0064\u0020\u0041\u0045\u0053\u0056\u0032\u0020\u0063\u0072\u0079\u0070\u0074\u0020\u0066\u0069\u006c\u0074e\u0072\u0020\u006c\u0065\u006eg\u0074\u0068 \u0028\u0025\u0064\u0029",_gfa .Length );};return filterAESV2 {},nil ;};
|
||||
|
||||
// Name implements Filter interface.
|
||||
func (filterAESV2 )Name ()string {return "\u0041\u0045\u0053V\u0032"};var _ Filter =filterAESV2 {};func init (){_gfg ("\u0041\u0045\u0053V\u0033",_dg )};type filterV2 struct{_ade int };
|
||||
func (filterV2 )Name ()string {return "\u0056\u0032"};type filterFunc func (_ecd FilterDict )(Filter ,error );func (filterIdentity )Name ()string {return "\u0049\u0064\u0065\u006e\u0074\u0069\u0074\u0079"};
|
||||
|
||||
// MakeKey implements Filter interface.
|
||||
func (_ge filterV2 )MakeKey (objNum ,genNum uint32 ,ekey []byte )([]byte ,error ){return _ffb (objNum ,genNum ,ekey ,false );};
|
||||
func (filterAESV2 )MakeKey (objNum ,genNum uint32 ,ekey []byte )([]byte ,error ){return _dc (objNum ,genNum ,ekey ,true );};type filterAES struct{};
|
||||
|
||||
// NewFilterV2 creates a RC4-based filter with a specified key length (in bytes).
|
||||
func NewFilterV2 (length int )Filter {_gc ,_ef :=_cd (FilterDict {Length :length });if _ef !=nil {_ff .Log .Error ("E\u0052\u0052\u004f\u0052\u003a\u0020\u0063\u006f\u0075l\u0064\u0020\u006e\u006f\u0074\u0020\u0063re\u0061\u0074\u0065\u0020R\u0043\u0034\u0020\u0056\u0032\u0020\u0063\u0072\u0079pt\u0020\u0066i\u006c\u0074\u0065\u0072\u003a\u0020\u0025\u0076",_ef );return filterV2 {_ade :length };};return _gc ;};
|
||||
// NewFilter creates CryptFilter from a corresponding dictionary.
|
||||
func NewFilter (d FilterDict )(Filter ,error ){_ece ,_deg :=_agc (d .CFM );if _deg !=nil {return nil ,_deg ;};_fa ,_deg :=_ece (d );if _deg !=nil {return nil ,_deg ;};return _fa ,nil ;};
|
||||
|
||||
// MakeKey implements Filter interface.
|
||||
func (filterAESV2 )MakeKey (objNum ,genNum uint32 ,ekey []byte )([]byte ,error ){return _ffb (objNum ,genNum ,ekey ,true );};func (filterAES )DecryptBytes (buf []byte ,okey []byte )([]byte ,error ){_gg ,_bb :=_fe .NewCipher (okey );if _bb !=nil {return nil ,_bb ;};if len (buf )< 16{_ff .Log .Debug ("\u0045R\u0052\u004f\u0052\u0020\u0041\u0045\u0053\u0020\u0069\u006e\u0076a\u006c\u0069\u0064\u0020\u0062\u0075\u0066\u0020\u0025\u0073",buf );return buf ,_a .Errorf ("\u0041\u0045\u0053\u003a B\u0075\u0066\u0020\u006c\u0065\u006e\u0020\u003c\u0020\u0031\u0036\u0020\u0028\u0025d\u0029",len (buf ));};_ga :=buf [:16];buf =buf [16:];if len (buf )%16!=0{_ff .Log .Debug ("\u0020\u0069\u0076\u0020\u0028\u0025\u0064\u0029\u003a\u0020\u0025\u0020\u0078",len (_ga ),_ga );_ff .Log .Debug ("\u0062\u0075\u0066\u0020\u0028\u0025\u0064\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );return buf ,_a .Errorf ("\u0041\u0045\u0053\u0020\u0062\u0075\u0066\u0020\u006c\u0065\u006e\u0067\u0074\u0068\u0020\u006e\u006f\u0074\u0020\u006d\u0075\u006c\u0074\u0069p\u006c\u0065\u0020\u006f\u0066 \u0031\u0036 \u0028\u0025\u0064\u0029",len (buf ));};_ecf :=_g .NewCBCDecrypter (_gg ,_ga );_ff .Log .Trace ("A\u0045\u0053\u0020\u0044ec\u0072y\u0070\u0074\u0020\u0028\u0025d\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );_ff .Log .Trace ("\u0063\u0068\u006f\u0070\u0020\u0041\u0045\u0053\u0020\u0044\u0065c\u0072\u0079\u0070\u0074\u0020\u0028\u0025\u0064\u0029\u003a \u0025\u0020\u0078",len (buf ),buf );_ecf .CryptBlocks (buf ,buf );_ff .Log .Trace ("\u0074\u006f\u0020(\u0025\u0064\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );if len (buf )==0{_ff .Log .Trace ("\u0045\u006d\u0070\u0074\u0079\u0020b\u0075\u0066\u002c\u0020\u0072\u0065\u0074\u0075\u0072\u006e\u0069\u006e\u0067 \u0065\u006d\u0070\u0074\u0079\u0020\u0073t\u0072\u0069\u006e\u0067");return buf ,nil ;};_agd :=int (buf [len (buf )-1]);if _agd > len (buf ){_ff .Log .Debug ("\u0049\u006c\u006c\u0065g\u0061\u006c\u0020\u0070\u0061\u0064\u0020\u006c\u0065\u006eg\u0074h\u0020\u0028\u0025\u0064\u0020\u003e\u0020%\u0064\u0029",_agd ,len (buf ));return buf ,_a .Errorf ("\u0069n\u0076a\u006c\u0069\u0064\u0020\u0070a\u0064\u0020l\u0065\u006e\u0067\u0074\u0068");};buf =buf [:len (buf )-_agd ];return buf ,nil ;};type filterAESV2 struct{filterAES };type filterFunc func (_cca FilterDict )(Filter ,error );
|
||||
// EncryptBytes implements Filter interface.
|
||||
func (filterV2 )EncryptBytes (buf []byte ,okey []byte )([]byte ,error ){_af ,_cabe :=_eg .NewCipher (okey );if _cabe !=nil {return nil ,_cabe ;};_gfe .Log .Trace ("\u0052\u00434\u0020\u0045\u006ec\u0072\u0079\u0070\u0074\u003a\u0020\u0025\u0020\u0078",buf );_af .XORKeyStream (buf ,buf );_gfe .Log .Trace ("\u0074o\u003a\u0020\u0025\u0020\u0078",buf );return buf ,nil ;};func (filterIdentity )EncryptBytes (p []byte ,okey []byte )([]byte ,error ){return p ,nil };
|
||||
|
||||
// KeyLength implements Filter interface.
|
||||
func (filterAESV2 )KeyLength ()int {return 128/8};
|
||||
func (_gccc filterV2 )KeyLength ()int {return _gccc ._fg };func (filterIdentity )HandlerVersion ()(V ,R int ){return ;};func (filterIdentity )KeyLength ()int {return 0};
|
||||
|
||||
// Name implements Filter interface.
|
||||
func (filterAESV3 )Name ()string {return "\u0041\u0045\u0053V\u0033"};
|
||||
|
||||
// PDFVersion implements Filter interface.
|
||||
func (_geg filterV2 )PDFVersion ()[2]int {return [2]int {}};var _ Filter =filterAESV2 {};
|
||||
|
||||
// Filter is a common interface for crypt filter methods.
|
||||
type Filter interface{
|
||||
|
||||
@ -61,48 +97,12 @@ HandlerVersion ()(V ,R int );
|
||||
|
||||
// MakeKey generates a object encryption key based on file encryption key and object numbers.
|
||||
// Used only for legacy filters - AESV3 doesn't change the key for each object.
|
||||
MakeKey (_db ,_gdg uint32 ,_cff []byte )([]byte ,error );
|
||||
MakeKey (_gae ,_da uint32 ,_cb []byte )([]byte ,error );
|
||||
|
||||
// EncryptBytes encrypts a buffer using object encryption key, as returned by MakeKey.
|
||||
// Implementation may reuse a buffer and encrypt data in-place.
|
||||
EncryptBytes (_deg []byte ,_ead []byte )([]byte ,error );
|
||||
EncryptBytes (_aac []byte ,_baa []byte )([]byte ,error );
|
||||
|
||||
// DecryptBytes decrypts a buffer using object encryption key, as returned by MakeKey.
|
||||
// Implementation may reuse a buffer and decrypt data in-place.
|
||||
DecryptBytes (_bg []byte ,_efa []byte )([]byte ,error );};func (filterAES )EncryptBytes (buf []byte ,okey []byte )([]byte ,error ){_eb ,_dc :=_fe .NewCipher (okey );if _dc !=nil {return nil ,_dc ;};_ff .Log .Trace ("A\u0045\u0053\u0020\u0045nc\u0072y\u0070\u0074\u0020\u0028\u0025d\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );const _fdg =_fe .BlockSize ;_af :=_fdg -len (buf )%_fdg ;for _ag :=0;_ag < _af ;_ag ++{buf =append (buf ,byte (_af ));};_ff .Log .Trace ("\u0050a\u0064d\u0065\u0064\u0020\u0074\u006f \u0025\u0064 \u0062\u0079\u0074\u0065\u0073",len (buf ));_cf :=make ([]byte ,_fdg +len (buf ));_da :=_cf [:_fdg ];if _ ,_b :=_e .ReadFull (_c .Reader ,_da );_b !=nil {return nil ,_b ;};_fc :=_g .NewCBCEncrypter (_eb ,_da );_fc .CryptBlocks (_cf [_fdg :],buf );buf =_cf ;_ff .Log .Trace ("\u0074\u006f\u0020(\u0025\u0064\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );return buf ,nil ;};
|
||||
|
||||
// Name implements Filter interface.
|
||||
func (filterV2 )Name ()string {return "\u0056\u0032"};func init (){_gfg ("\u0056\u0032",_cd )};
|
||||
|
||||
// NewFilterAESV2 creates an AES-based filter with a 128 bit key (AESV2).
|
||||
func NewFilterAESV2 ()Filter {_cc ,_cb :=_abf (FilterDict {});if _cb !=nil {_ff .Log .Error ("E\u0052\u0052\u004f\u0052\u003a\u0020\u0063\u006f\u0075l\u0064\u0020\u006e\u006f\u0074\u0020\u0063re\u0061\u0074\u0065\u0020A\u0045\u0053\u0020\u0056\u0032\u0020\u0063\u0072\u0079pt\u0020\u0066i\u006c\u0074\u0065\u0072\u003a\u0020\u0025\u0076",_cb );return filterAESV2 {};};return _cc ;};func (filterIdentity )HandlerVersion ()(V ,R int ){return ;};
|
||||
|
||||
// MakeKey implements Filter interface.
|
||||
func (filterAESV3 )MakeKey (_ ,_ uint32 ,ekey []byte )([]byte ,error ){return ekey ,nil };
|
||||
|
||||
// HandlerVersion implements Filter interface.
|
||||
func (filterAESV2 )HandlerVersion ()(V ,R int ){V ,R =4,4;return ;};
|
||||
|
||||
// HandlerVersion implements Filter interface.
|
||||
func (filterAESV3 )HandlerVersion ()(V ,R int ){V ,R =5,6;return ;};
|
||||
|
||||
// HandlerVersion implements Filter interface.
|
||||
func (_gag filterV2 )HandlerVersion ()(V ,R int ){V ,R =2,3;return ;};var _ Filter =filterV2 {};func (filterIdentity )PDFVersion ()[2]int {return [2]int {}};
|
||||
|
||||
// PDFVersion implements Filter interface.
|
||||
func (filterAESV2 )PDFVersion ()[2]int {return [2]int {1,5}};
|
||||
|
||||
// EncryptBytes implements Filter interface.
|
||||
func (filterV2 )EncryptBytes (buf []byte ,okey []byte )([]byte ,error ){_df ,_afg :=_ec .NewCipher (okey );if _afg !=nil {return nil ,_afg ;};_ff .Log .Trace ("\u0052\u00434\u0020\u0045\u006ec\u0072\u0079\u0070\u0074\u003a\u0020\u0025\u0020\u0078",buf );_df .XORKeyStream (buf ,buf );_ff .Log .Trace ("\u0074o\u003a\u0020\u0025\u0020\u0078",buf );return buf ,nil ;};func (filterIdentity )Name ()string {return "\u0049\u0064\u0065\u006e\u0074\u0069\u0074\u0079"};var _ Filter =filterAESV3 {};func _cd (_de FilterDict )(Filter ,error ){if _de .Length %8!=0{return nil ,_a .Errorf ("\u0063\u0072\u0079p\u0074\u0020\u0066\u0069\u006c\u0074\u0065\u0072\u0020\u006c\u0065\u006e\u0067\u0074\u0068\u0020\u006e\u006f\u0074\u0020\u006d\u0075\u006c\u0074\u0069\u0070\u006c\u0065\u0020o\u0066\u0020\u0038\u0020\u0028\u0025\u0064\u0029",_de .Length );};if _de .Length < 5||_de .Length > 16{if _de .Length ==40||_de .Length ==64||_de .Length ==128{_ff .Log .Debug ("\u0053\u0054\u0041\u004e\u0044AR\u0044\u0020V\u0049\u004f\u004c\u0041\u0054\u0049\u004f\u004e\u003a\u0020\u0043\u0072\u0079\u0070\u0074\u0020\u004c\u0065\u006e\u0067\u0074\u0068\u0020\u0061\u0070\u0070\u0065\u0061\u0072s\u0020\u0074\u006f \u0062\u0065\u0020\u0069\u006e\u0020\u0062\u0069\u0074\u0073\u0020\u0072\u0061t\u0068\u0065\u0072\u0020\u0074h\u0061\u006e\u0020\u0062\u0079\u0074\u0065\u0073\u0020-\u0020\u0061s\u0073u\u006d\u0069\u006e\u0067\u0020\u0062\u0069t\u0073\u0020\u0028\u0025\u0064\u0029",_de .Length );_de .Length /=8;}else {return nil ,_a .Errorf ("\u0063\u0072\u0079\u0070\u0074\u0020\u0066\u0069\u006c\u0074\u0065\u0072\u0020\u006c\u0065\u006e\u0067\u0074h\u0020\u006e\u006f\u0074\u0020\u0069\u006e \u0072\u0061\u006e\u0067\u0065\u0020\u0034\u0030\u0020\u002d\u00201\u0032\u0038\u0020\u0062\u0069\u0074\u0020\u0028\u0025\u0064\u0029",_de .Length );};};return filterV2 {_ade :_de .Length },nil ;};type filterAESV3 struct{filterAES };func (filterIdentity )KeyLength ()int {return 0};func _ffb (_fea ,_fb uint32 ,_feag []byte ,_gac bool )([]byte ,error ){_dcd :=make ([]byte ,len (_feag )+5);for _cbb :=0;_cbb < len (_feag );_cbb ++{_dcd [_cbb ]=_feag [_cbb ];};for _gd :=0;_gd < 3;_gd ++{_ae :=byte ((_fea >>uint32 (8*_gd ))&0xff);_dcd [_gd +len (_feag )]=_ae ;};for _def :=0;_def < 2;_def ++{_eg :=byte ((_fb >>uint32 (8*_def ))&0xff);_dcd [_def +len (_feag )+3]=_eg ;};if _gac {_dcd =append (_dcd ,0x73);_dcd =append (_dcd ,0x41);_dcd =append (_dcd ,0x6C);_dcd =append (_dcd ,0x54);};_ad :=_fd .New ();_ad .Write (_dcd );_ced :=_ad .Sum (nil );if len (_feag )+5< 16{return _ced [0:len (_feag )+5],nil ;};return _ced ,nil ;};func (filterIdentity )EncryptBytes (p []byte ,okey []byte )([]byte ,error ){return p ,nil };func (filterIdentity )DecryptBytes (p []byte ,okey []byte )([]byte ,error ){return p ,nil };func _dg (_ea FilterDict )(Filter ,error ){if _ea .Length ==256{_ff .Log .Debug ("\u0041\u0045S\u0056\u0033\u0020c\u0072\u0079\u0070\u0074\u0020f\u0069\u006c\u0074\u0065\u0072 l\u0065\u006e\u0067\u0074\u0068\u0020\u0061\u0070\u0070\u0065\u0061\u0072\u0073\u0020\u0074\u006f\u0020\u0062e\u0020i\u006e\u0020\u0062\u0069\u0074\u0073 ra\u0074\u0068\u0065\u0072\u0020\u0074\u0068\u0061\u006e\u0020\u0062\u0079te\u0073 \u002d\u0020\u0061\u0073s\u0075m\u0069n\u0067\u0020b\u0069\u0074s \u0028\u0025\u0064\u0029",_ea .Length );_ea .Length /=8;};if _ea .Length !=0&&_ea .Length !=32{return nil ,_a .Errorf ("\u0069\u006e\u0076\u0061\u006c\u0069\u0064\u0020\u0041\u0045\u0053\u0056\u0033\u0020\u0063\u0072\u0079\u0070\u0074\u0020\u0066\u0069\u006c\u0074e\u0072\u0020\u006c\u0065\u006eg\u0074\u0068 \u0028\u0025\u0064\u0029",_ea .Length );};return filterAESV3 {},nil ;};func _bae (_egd string )(filterFunc ,error ){_cce :=_cba [string (_egd )];if _cce ==nil {return nil ,_a .Errorf ("\u0075\u006e\u0073\u0075p\u0070\u006f\u0072\u0074\u0065\u0064\u0020\u0063\u0072\u0079p\u0074 \u0066\u0069\u006c\u0074\u0065\u0072\u003a \u0025\u0071",_egd );};return _cce ,nil ;};
|
||||
|
||||
// PDFVersion implements Filter interface.
|
||||
func (_aef filterV2 )PDFVersion ()[2]int {return [2]int {}};
|
||||
|
||||
// PDFVersion implements Filter interface.
|
||||
func (filterAESV3 )PDFVersion ()[2]int {return [2]int {2,0}};
|
||||
|
||||
// DecryptBytes implements Filter interface.
|
||||
func (filterV2 )DecryptBytes (buf []byte ,okey []byte )([]byte ,error ){_cfa ,_eff :=_ec .NewCipher (okey );if _eff !=nil {return nil ,_eff ;};_ff .Log .Trace ("\u0052\u00434\u0020\u0044\u0065c\u0072\u0079\u0070\u0074\u003a\u0020\u0025\u0020\u0078",buf );_cfa .XORKeyStream (buf ,buf );_ff .Log .Trace ("\u0074o\u003a\u0020\u0025\u0020\u0078",buf );return buf ,nil ;};type filterAES struct{};func (filterIdentity )MakeKey (objNum ,genNum uint32 ,fkey []byte )([]byte ,error ){return fkey ,nil };func _gfg (_bgb string ,_ba filterFunc ){if _ ,_age :=_cba [_bgb ];_age {panic ("\u0061l\u0072e\u0061\u0064\u0079\u0020\u0072e\u0067\u0069s\u0074\u0065\u0072\u0065\u0064");};_cba [_bgb ]=_ba ;};var (_cba =make (map[string ]filterFunc ););
|
||||
|
||||
// NewIdentity creates an identity filter that bypasses all data without changes.
|
||||
func NewIdentity ()Filter {return filterIdentity {}};
|
||||
DecryptBytes (_eea []byte ,_dbg []byte )([]byte ,error );};func (filterAES )EncryptBytes (buf []byte ,okey []byte )([]byte ,error ){_fc ,_gc :=_d .NewCipher (okey );if _gc !=nil {return nil ,_gc ;};_gfe .Log .Trace ("A\u0045\u0053\u0020\u0045nc\u0072y\u0070\u0074\u0020\u0028\u0025d\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );const _efc =_d .BlockSize ;_a :=_efc -len (buf )%_efc ;for _ag :=0;_ag < _a ;_ag ++{buf =append (buf ,byte (_a ));};_gfe .Log .Trace ("\u0050a\u0064d\u0065\u0064\u0020\u0074\u006f \u0025\u0064 \u0062\u0079\u0074\u0065\u0073",len (buf ));_ca :=make ([]byte ,_efc +len (buf ));_dda :=_ca [:_efc ];if _ ,_gb :=_e .ReadFull (_de .Reader ,_dda );_gb !=nil {return nil ,_gb ;};_ff :=_f .NewCBCEncrypter (_fc ,_dda );_ff .CryptBlocks (_ca [_efc :],buf );buf =_ca ;_gfe .Log .Trace ("\u0074\u006f\u0020(\u0025\u0064\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );return buf ,nil ;};
|
||||
@ -9,50 +9,50 @@
|
||||
// Use of this source code is governed by the UniDoc End User License Agreement
|
||||
// terms that can be accessed at https://unidoc.io/eula/
|
||||
|
||||
package security ;import (_fa "bytes";_f "crypto/aes";_e "crypto/cipher";_ea "crypto/md5";_ef "crypto/rand";_cd "crypto/rc4";_dc "crypto/sha256";_gc "crypto/sha512";_dca "encoding/binary";_c "errors";_ce "fmt";_a "github.com/unidoc/unipdf/v3/common";_eb "hash";_g "io";_ff "math";);func (_gag errInvalidField )Error ()string {return _ce .Sprintf ("\u0025s\u003a\u0020e\u0078\u0070\u0065\u0063t\u0065\u0064\u0020%\u0073\u0020\u0066\u0069\u0065\u006c\u0064\u0020\u0074o \u0062\u0065\u0020%\u0064\u0020b\u0079\u0074\u0065\u0073\u002c\u0020g\u006f\u0074 \u0025\u0064",_gag .Func ,_gag .Field ,_gag .Exp ,_gag .Got );};func _aa (_ga _e .Block )_e .BlockMode {return (*ecbDecrypter )(_gg (_ga ))};func _gg (_dcg _e .Block )*ecb {return &ecb {_ad :_dcg ,_de :_dcg .BlockSize ()}};const (PermOwner =Permissions (_ff .MaxUint32 );PermPrinting =Permissions (1<<2);PermModify =Permissions (1<<3);PermExtractGraphics =Permissions (1<<4);PermAnnotate =Permissions (1<<5);PermFillForms =Permissions (1<<8);PermDisabilityExtract =Permissions (1<<9);PermRotateInsert =Permissions (1<<10);PermFullPrintQuality =Permissions (1<<11););
|
||||
package security ;import (_gf "bytes";_g "crypto/aes";_c "crypto/cipher";_afg "crypto/md5";_af "crypto/rand";_ca "crypto/rc4";_bd "crypto/sha256";_d "crypto/sha512";_bdc "encoding/binary";_ge "errors";_e "fmt";_aa "github.com/unidoc/unipdf/v3/common";_b "hash";_ce "io";_da "math";);const _abg ="\x28\277\116\136\x4e\x75\x8a\x41\x64\000\x4e\x56\377"+"\xfa\001\010\056\x2e\x00\xb6\xd0\x68\076\x80\x2f\014"+"\251\xfe\x64\x53\x69\172";type stdHandlerR4 struct{Length int ;ID0 string ;};func (_eag stdHandlerR6 )alg13 (_fcf *StdEncryptDict ,_dffa []byte )error {if _cfe :=_fg ("\u0061\u006c\u00671\u0033","\u004b\u0065\u0079",32,_dffa );_cfe !=nil {return _cfe ;};if _agef :=_fg ("\u0061\u006c\u00671\u0033","\u0050\u0065\u0072m\u0073",16,_fcf .Perms );_agef !=nil {return _agef ;};_fgd :=make ([]byte ,16);copy (_fgd ,_fcf .Perms [:16]);_bcf ,_bfa :=_g .NewCipher (_dffa [:32]);if _bfa !=nil {return _bfa ;};_bfag :=_ef (_bcf );_bfag .CryptBlocks (_fgd ,_fgd );if !_gf .Equal (_fgd [9:12],[]byte ("\u0061\u0064\u0062")){return _ge .New ("\u0064\u0065\u0063o\u0064\u0065\u0064\u0020p\u0065\u0072\u006d\u0069\u0073\u0073\u0069o\u006e\u0073\u0020\u0061\u0072\u0065\u0020\u0069\u006e\u0076\u0061\u006c\u0069\u0064");};_ccd :=Permissions (_bdc .LittleEndian .Uint32 (_fgd [0:4]));if _ccd !=_fcf .P {return _ge .New ("\u0070\u0065r\u006d\u0069\u0073\u0073\u0069\u006f\u006e\u0073\u0020\u0076\u0061\u006c\u0069\u0064\u0061\u0074\u0069\u006f\u006e\u0020\u0066\u0061il\u0065\u0064");};_bgg :=true ;if _fgd [8]=='T'{_bgg =true ;}else if _fgd [8]=='F'{_bgg =false ;}else {return _ge .New ("\u0064\u0065\u0063\u006f\u0064\u0065\u0064 \u006d\u0065\u0074a\u0064\u0061\u0074\u0061 \u0065\u006e\u0063\u0072\u0079\u0070\u0074\u0069\u006f\u006e\u0020\u0066\u006c\u0061\u0067\u0020\u0069\u0073\u0020\u0069\u006e\u0076\u0061\u006c\u0069\u0064");};if _bgg !=_fcf .EncryptMetadata {return _ge .New ("\u006d\u0065t\u0061\u0064\u0061\u0074a\u0020\u0065n\u0063\u0072\u0079\u0070\u0074\u0069\u006f\u006e \u0076\u0061\u006c\u0069\u0064\u0061\u0074\u0069\u006f\u006e\u0020\u0066a\u0069\u006c\u0065\u0064");};return nil ;};func (_ec stdHandlerR4 )alg3 (R int ,_ddg ,_gb []byte )([]byte ,error ){var _gcc []byte ;if len (_gb )> 0{_gcc =_ec .alg3Key (R ,_gb );}else {_gcc =_ec .alg3Key (R ,_ddg );};_ba ,_fea :=_ca .NewCipher (_gcc );if _fea !=nil {return nil ,_ge .New ("\u0066a\u0069l\u0065\u0064\u0020\u0072\u0063\u0034\u0020\u0063\u0069\u0070\u0068");};_gcdf :=_ec .paddedPass (_ddg );_ceae :=make ([]byte ,len (_gcdf ));_ba .XORKeyStream (_ceae ,_gcdf );if R >=3{_bg :=make ([]byte ,len (_gcc ));for _bb :=0;_bb < 19;_bb ++{for _ecc :=0;_ecc < len (_gcc );_ecc ++{_bg [_ecc ]=_gcc [_ecc ]^byte (_bb +1);};_gfcg ,_fec :=_ca .NewCipher (_bg );if _fec !=nil {return nil ,_ge .New ("\u0066a\u0069l\u0065\u0064\u0020\u0072\u0063\u0034\u0020\u0063\u0069\u0070\u0068");};_gfcg .XORKeyStream (_ceae ,_ceae );};};return _ceae ,nil ;};func (_efc stdHandlerR4 )alg7 (_afge *StdEncryptDict ,_ggf []byte )([]byte ,error ){_ae :=_efc .alg3Key (_afge .R ,_ggf );_ged :=make ([]byte ,len (_afge .O ));if _afge .R ==2{_acb ,_gfe :=_ca .NewCipher (_ae );if _gfe !=nil {return nil ,_ge .New ("\u0066\u0061\u0069\u006c\u0065\u0064\u0020\u0063\u0069\u0070\u0068\u0065\u0072");};_acb .XORKeyStream (_ged ,_afge .O );}else if _afge .R >=3{_ccga :=append ([]byte {},_afge .O ...);for _cbg :=0;_cbg < 20;_cbg ++{_efe :=append ([]byte {},_ae ...);for _gda :=0;_gda < len (_ae );_gda ++{_efe [_gda ]^=byte (19-_cbg );};_cag ,_ccbc :=_ca .NewCipher (_efe );if _ccbc !=nil {return nil ,_ge .New ("\u0066\u0061\u0069\u006c\u0065\u0064\u0020\u0063\u0069\u0070\u0068\u0065\u0072");};_cag .XORKeyStream (_ged ,_ccga );_ccga =append ([]byte {},_ged ...);};}else {return nil ,_ge .New ("\u0069n\u0076\u0061\u006c\u0069\u0064\u0020R");};_fbc ,_gde :=_efc .alg6 (_afge ,_ged );if _gde !=nil {return nil ,nil ;};return _fbc ,nil ;};
|
||||
|
||||
// Allowed checks if a set of permissions can be granted.
|
||||
func (_ba Permissions )Allowed (p2 Permissions )bool {return _ba &p2 ==p2 };func (_dg *ecbEncrypter )BlockSize ()int {return _dg ._de };type stdHandlerR4 struct{Length int ;ID0 string ;};type ecbDecrypter ecb ;func (_ec *ecbDecrypter )CryptBlocks (dst ,src []byte ){if len (src )%_ec ._de !=0{_a .Log .Error ("\u0045\u0052\u0052\u004f\u0052:\u0020\u0045\u0043\u0042\u0020\u0064\u0065\u0063\u0072\u0079\u0070\u0074\u003a \u0069\u006e\u0070\u0075\u0074\u0020\u006e\u006f\u0074\u0020\u0066\u0075\u006c\u006c\u0020\u0062\u006c\u006f\u0063\u006b\u0073");return ;};if len (dst )< len (src ){_a .Log .Error ("\u0045R\u0052\u004fR\u003a\u0020\u0045C\u0042\u0020\u0064\u0065\u0063\u0072\u0079p\u0074\u003a\u0020\u006f\u0075\u0074p\u0075\u0074\u0020\u0073\u006d\u0061\u006c\u006c\u0065\u0072\u0020t\u0068\u0061\u006e\u0020\u0069\u006e\u0070\u0075\u0074");return ;};for len (src )> 0{_ec ._ad .Decrypt (dst ,src [:_ec ._de ]);src =src [_ec ._de :];dst =dst [_ec ._de :];};};func (_eg *ecbEncrypter )CryptBlocks (dst ,src []byte ){if len (src )%_eg ._de !=0{_a .Log .Error ("\u0045\u0052\u0052\u004f\u0052:\u0020\u0045\u0043\u0042\u0020\u0065\u006e\u0063\u0072\u0079\u0070\u0074\u003a \u0069\u006e\u0070\u0075\u0074\u0020\u006e\u006f\u0074\u0020\u0066\u0075\u006c\u006c\u0020\u0062\u006c\u006f\u0063\u006b\u0073");return ;};if len (dst )< len (src ){_a .Log .Error ("\u0045R\u0052\u004fR\u003a\u0020\u0045C\u0042\u0020\u0065\u006e\u0063\u0072\u0079p\u0074\u003a\u0020\u006f\u0075\u0074p\u0075\u0074\u0020\u0073\u006d\u0061\u006c\u006c\u0065\u0072\u0020t\u0068\u0061\u006e\u0020\u0069\u006e\u0070\u0075\u0074");return ;};for len (src )> 0{_eg ._ad .Encrypt (dst ,src [:_eg ._de ]);src =src [_eg ._de :];dst =dst [_eg ._de :];};};
|
||||
// GenerateParams is the algorithm opposite to alg2a (R>=5).
|
||||
// It generates U,O,UE,OE,Perms fields using AESv3 encryption.
|
||||
// There is no algorithm number assigned to this function in the spec.
|
||||
// It expects R, P and EncryptMetadata fields to be set.
|
||||
func (_afe stdHandlerR6 )GenerateParams (d *StdEncryptDict ,opass ,upass []byte )([]byte ,error ){_ddaf :=make ([]byte ,32);if _ ,_cced :=_ce .ReadFull (_af .Reader ,_ddaf );_cced !=nil {return nil ,_cced ;};d .U =nil ;d .O =nil ;d .UE =nil ;d .OE =nil ;d .Perms =nil ;if len (upass )> 127{upass =upass [:127];};if len (opass )> 127{opass =opass [:127];};if _ffaa :=_afe .alg8 (d ,_ddaf ,upass );_ffaa !=nil {return nil ,_ffaa ;};if _acf :=_afe .alg9 (d ,_ddaf ,opass );_acf !=nil {return nil ,_acf ;};if d .R ==5{return _ddaf ,nil ;};if _cdf :=_afe .alg10 (d ,_ddaf );_cdf !=nil {return nil ,_cdf ;};return _ddaf ,nil ;};func (_gddc stdHandlerR6 )alg10 (_cce *StdEncryptDict ,_agg []byte )error {if _ggge :=_fg ("\u0061\u006c\u00671\u0030","\u004b\u0065\u0079",32,_agg );_ggge !=nil {return _ggge ;};_fag :=uint64 (uint32 (_cce .P ))|(_da .MaxUint32 <<32);Perms :=make ([]byte ,16);_bdc .LittleEndian .PutUint64 (Perms [:8],_fag );if _cce .EncryptMetadata {Perms [8]='T';}else {Perms [8]='F';};copy (Perms [9:12],"\u0061\u0064\u0062");if _ ,_afga :=_ce .ReadFull (_af .Reader ,Perms [12:16]);_afga !=nil {return _afga ;};_ffe ,_dafe :=_eg (_agg [:32]);if _dafe !=nil {return _dafe ;};_ddd :=_fe (_ffe );_ddd .CryptBlocks (Perms ,Perms );_cce .Perms =Perms [:16];return nil ;};var _ StdHandler =stdHandlerR6 {};func _dgc (_ddf ,_cbe ,_cec []byte )([]byte ,error ){var (_ddb ,_ggg ,_bbc _b .Hash ;);_ddb =_bd .New ();_aab :=make ([]byte ,64);_bcbg :=_ddb ;_bcbg .Write (_ddf );K :=_bcbg .Sum (_aab [:0]);_gdff :=make ([]byte ,64*(127+64+48));_aec :=func (_fcb int )([]byte ,error ){_abf :=len (_cbe )+len (K )+len (_cec );_ced :=_gdff [:_abf ];_eeb :=copy (_ced ,_cbe );_eeb +=copy (_ced [_eeb :],K [:]);_eeb +=copy (_ced [_eeb :],_cec );if _eeb !=_abf {_aa .Log .Error ("E\u0052\u0052\u004f\u0052\u003a\u0020u\u006e\u0065\u0078\u0070\u0065\u0063t\u0065\u0064\u0020\u0072\u006f\u0075\u006ed\u0020\u0069\u006e\u0070\u0075\u0074\u0020\u0073\u0069\u007ae\u002e");return nil ,_ge .New ("\u0077\u0072\u006f\u006e\u0067\u0020\u0073\u0069\u007a\u0065");};K1 :=_gdff [:_abf *64];_egb (K1 ,_abf );_dgb ,_feba :=_eg (K [0:16]);if _feba !=nil {return nil ,_feba ;};_aaa :=_c .NewCBCEncrypter (_dgb ,K [16:32]);_aaa .CryptBlocks (K1 ,K1 );E :=K1 ;_ead :=0;for _geg :=0;_geg < 16;_geg ++{_ead +=int (E [_geg ]%3);};var _fdc _b .Hash ;switch _ead %3{case 0:_fdc =_ddb ;case 1:if _ggg ==nil {_ggg =_d .New384 ();};_fdc =_ggg ;case 2:if _bbc ==nil {_bbc =_d .New ();};_fdc =_bbc ;};_fdc .Reset ();_fdc .Write (E );K =_fdc .Sum (_aab [:0]);return E ,nil ;};for _ebeg :=0;;{E ,_dcg :=_aec (_ebeg );if _dcg !=nil {return nil ,_dcg ;};_edg :=uint8 (E [len (E )-1]);_ebeg ++;if _ebeg >=64&&_edg <=uint8 (_ebeg -32){break ;};};return K [:32],nil ;};func (_ccb stdHandlerR4 )alg6 (_eb *StdEncryptDict ,_agb []byte )([]byte ,error ){var (_cfg []byte ;_abc error ;);_fbd :=_ccb .alg2 (_eb ,_agb );if _eb .R ==2{_cfg ,_abc =_ccb .alg4 (_fbd ,_agb );}else if _eb .R >=3{_cfg ,_abc =_ccb .alg5 (_fbd ,_agb );}else {return nil ,_ge .New ("\u0069n\u0076\u0061\u006c\u0069\u0064\u0020R");};if _abc !=nil {return nil ,_abc ;};_aa .Log .Trace ("\u0063\u0068\u0065\u0063k:\u0020\u0025\u0020\u0078\u0020\u003d\u003d\u0020\u0025\u0020\u0078\u0020\u003f",string (_cfg ),string (_eb .U ));_ff :=_cfg ;_dda :=_eb .U ;if _eb .R >=3{if len (_ff )> 16{_ff =_ff [0:16];};if len (_dda )> 16{_dda =_dda [0:16];};};if !_gf .Equal (_ff ,_dda ){return nil ,nil ;};return _fbd ,nil ;};type ecbDecrypter ecb ;func (_gg *ecbEncrypter )CryptBlocks (dst ,src []byte ){if len (src )%_gg ._f !=0{_aa .Log .Error ("\u0045\u0052\u0052\u004f\u0052:\u0020\u0045\u0043\u0042\u0020\u0065\u006e\u0063\u0072\u0079\u0070\u0074\u003a \u0069\u006e\u0070\u0075\u0074\u0020\u006e\u006f\u0074\u0020\u0066\u0075\u006c\u006c\u0020\u0062\u006c\u006f\u0063\u006b\u0073");return ;};if len (dst )< len (src ){_aa .Log .Error ("\u0045R\u0052\u004fR\u003a\u0020\u0045C\u0042\u0020\u0065\u006e\u0063\u0072\u0079p\u0074\u003a\u0020\u006f\u0075\u0074p\u0075\u0074\u0020\u0073\u006d\u0061\u006c\u006c\u0065\u0072\u0020t\u0068\u0061\u006e\u0020\u0069\u006e\u0070\u0075\u0074");return ;};for len (src )> 0{_gg ._ea .Encrypt (dst ,src [:_gg ._f ]);src =src [_gg ._f :];dst =dst [_gg ._f :];};};func (stdHandlerR4 )paddedPass (_fa []byte )[]byte {_age :=make ([]byte ,32);_dd :=copy (_age ,_fa );for ;_dd < 32;_dd ++{_age [_dd ]=_abg [_dd -len (_fa )];};return _age ;};
|
||||
|
||||
// AuthEvent is an event type that triggers authentication.
|
||||
type AuthEvent string ;
|
||||
|
||||
// NewHandlerR4 creates a new standard security handler for R<=4.
|
||||
func NewHandlerR4 (id0 string ,length int )StdHandler {return stdHandlerR4 {ID0 :id0 ,Length :length }};func (_cdc stdHandlerR6 )alg8 (_ggbad *StdEncryptDict ,_dac []byte ,_gad []byte )error {if _dacb :=_dga ("\u0061\u006c\u0067\u0038","\u004b\u0065\u0079",32,_dac );_dacb !=nil {return _dacb ;};var _daa [16]byte ;if _ ,_ada :=_g .ReadFull (_ef .Reader ,_daa [:]);_ada !=nil {return _ada ;};_ecac :=_daa [0:8];_dgbc :=_daa [8:16];_aeeb :=make ([]byte ,len (_gad )+len (_ecac ));_ega :=copy (_aeeb ,_gad );_ega +=copy (_aeeb [_ega :],_ecac );_db ,_cbbg :=_cdc .alg2b (_ggbad .R ,_aeeb ,_gad ,nil );if _cbbg !=nil {return _cbbg ;};U :=make ([]byte ,len (_db )+len (_ecac )+len (_dgbc ));_ega =copy (U ,_db [:32]);_ega +=copy (U [_ega :],_ecac );_ega +=copy (U [_ega :],_dgbc );_ggbad .U =U ;_ega =len (_gad );_ega +=copy (_aeeb [_ega :],_dgbc );_db ,_cbbg =_cdc .alg2b (_ggbad .R ,_aeeb ,_gad ,nil );if _cbbg !=nil {return _cbbg ;};_adaf ,_cbbg :=_adea (_db [:32]);if _cbbg !=nil {return _cbbg ;};_dad :=make ([]byte ,_f .BlockSize );_cff :=_e .NewCBCEncrypter (_adaf ,_dad );UE :=make ([]byte ,32);_cff .CryptBlocks (UE ,_dac [:32]);_ggbad .UE =UE ;return nil ;};const (EventDocOpen =AuthEvent ("\u0044o\u0063\u004f\u0070\u0065\u006e");EventEFOpen =AuthEvent ("\u0045\u0046\u004f\u0070\u0065\u006e"););func (_bb stdHandlerR4 )alg3Key (R int ,_ffb []byte )[]byte {_cg :=_ea .New ();_aaa :=_bb .paddedPass (_ffb );_cg .Write (_aaa );if R >=3{for _ae :=0;_ae < 50;_ae ++{_cbb :=_cg .Sum (nil );_cg =_ea .New ();_cg .Write (_cbb );};};_ge :=_cg .Sum (nil );if R ==2{_ge =_ge [0:5];}else {_ge =_ge [0:_bb .Length /8];};return _ge ;};type ecbEncrypter ecb ;var _ StdHandler =stdHandlerR4 {};func (_bdb stdHandlerR4 )alg3 (R int ,_ebc ,_cf []byte )([]byte ,error ){var _dfg []byte ;if len (_cf )> 0{_dfg =_bdb .alg3Key (R ,_cf );}else {_dfg =_bdb .alg3Key (R ,_ebc );};_adf ,_fe :=_cd .NewCipher (_dfg );if _fe !=nil {return nil ,_c .New ("\u0066a\u0069l\u0065\u0064\u0020\u0072\u0063\u0034\u0020\u0063\u0069\u0070\u0068");};_cdg :=_bdb .paddedPass (_ebc );_ee :=make ([]byte ,len (_cdg ));_adf .XORKeyStream (_ee ,_cdg );if R >=3{_da :=make ([]byte ,len (_dfg ));for _gf :=0;_gf < 19;_gf ++{for _ecg :=0;_ecg < len (_dfg );_ecg ++{_da [_ecg ]=_dfg [_ecg ]^byte (_gf +1);};_eag ,_ded :=_cd .NewCipher (_da );if _ded !=nil {return nil ,_c .New ("\u0066a\u0069l\u0065\u0064\u0020\u0072\u0063\u0034\u0020\u0063\u0069\u0070\u0068");};_eag .XORKeyStream (_ee ,_ee );};};return _ee ,nil ;};
|
||||
func NewHandlerR4 (id0 string ,length int )StdHandler {return stdHandlerR4 {ID0 :id0 ,Length :length }};type stdHandlerR6 struct{};func (_ggfe stdHandlerR6 )alg2b (R int ,_gdfe ,_cd ,_gea []byte )([]byte ,error ){if R ==5{return _egc (_gdfe );};return _dgc (_gdfe ,_cd ,_gea );};
|
||||
|
||||
// StdHandler is an interface for standard security handlers.
|
||||
type StdHandler interface{
|
||||
|
||||
// GenerateParams uses owner and user passwords to set encryption parameters and generate an encryption key.
|
||||
// It assumes that R, P and EncryptMetadata are already set.
|
||||
GenerateParams (_ggc *StdEncryptDict ,_ead ,_bdc []byte )([]byte ,error );
|
||||
GenerateParams (_ag *StdEncryptDict ,_bc ,_dc []byte )([]byte ,error );
|
||||
|
||||
// Authenticate uses encryption dictionary parameters and the password to calculate
|
||||
// the document encryption key. It also returns permissions that should be granted to a user.
|
||||
// In case of failed authentication, it returns empty key and zero permissions with no error.
|
||||
Authenticate (_fb *StdEncryptDict ,_ed []byte )([]byte ,Permissions ,error );};
|
||||
Authenticate (_bce *StdEncryptDict ,_gc []byte )([]byte ,Permissions ,error );};
|
||||
|
||||
// NewHandlerR6 creates a new standard security handler for R=5 and R=6.
|
||||
func NewHandlerR6 ()StdHandler {return stdHandlerR6 {}};type errInvalidField struct{Func string ;Field string ;Exp int ;Got int ;};func (_bd *ecbDecrypter )BlockSize ()int {return _bd ._de };func (_fce stdHandlerR6 )alg2a (_beg *StdEncryptDict ,_aef []byte )([]byte ,Permissions ,error ){if _fef :=_dga ("\u0061\u006c\u00672\u0061","\u004f",48,_beg .O );_fef !=nil {return nil ,0,_fef ;};if _cef :=_dga ("\u0061\u006c\u00672\u0061","\u0055",48,_beg .U );_cef !=nil {return nil ,0,_cef ;};if len (_aef )> 127{_aef =_aef [:127];};_gbe ,_fg :=_fce .alg12 (_beg ,_aef );if _fg !=nil {return nil ,0,_fg ;};var (_cga []byte ;_ggba []byte ;_cba []byte ;);var _gcd Permissions ;if len (_gbe )!=0{_gcd =PermOwner ;_fgd :=make ([]byte ,len (_aef )+8+48);_aeb :=copy (_fgd ,_aef );_aeb +=copy (_fgd [_aeb :],_beg .O [40:48]);_aeb +=copy (_fgd [_aeb :],_beg .U [0:48]);_cga =_fgd ;_ggba =_beg .OE ;_cba =_beg .U [0:48];}else {_gbe ,_fg =_fce .alg11 (_beg ,_aef );if _fg ==nil &&len (_gbe )==0{_gbe ,_fg =_fce .alg11 (_beg ,[]byte (""));};if _fg !=nil {return nil ,0,_fg ;}else if len (_gbe )==0{return nil ,0,nil ;};_gcd =_beg .P ;_bfc :=make ([]byte ,len (_aef )+8);_bfg :=copy (_bfc ,_aef );_bfg +=copy (_bfc [_bfg :],_beg .U [40:48]);_cga =_bfc ;_ggba =_beg .UE ;_cba =nil ;};if _bga :=_dga ("\u0061\u006c\u00672\u0061","\u004b\u0065\u0079",32,_ggba );_bga !=nil {return nil ,0,_bga ;};_ggba =_ggba [:32];_cfc ,_fg :=_fce .alg2b (_beg .R ,_cga ,_aef ,_cba );if _fg !=nil {return nil ,0,_fg ;};_dcd ,_fg :=_f .NewCipher (_cfc [:32]);if _fg !=nil {return nil ,0,_fg ;};_ceg :=make ([]byte ,_f .BlockSize );_acb :=_e .NewCBCDecrypter (_dcd ,_ceg );_dedd :=make ([]byte ,32);_acb .CryptBlocks (_dedd ,_ggba );if _beg .R ==5{return _dedd ,_gcd ,nil ;};_fg =_fce .alg13 (_beg ,_dedd );if _fg !=nil {return nil ,0,_fg ;};return _dedd ,_gcd ,nil ;};func (_egf stdHandlerR4 )alg6 (_cedd *StdEncryptDict ,_bbe []byte )([]byte ,error ){var (_dde []byte ;_cc error ;);_eaf :=_egf .alg2 (_cedd ,_bbe );if _cedd .R ==2{_dde ,_cc =_egf .alg4 (_eaf ,_bbe );}else if _cedd .R >=3{_dde ,_cc =_egf .alg5 (_eaf ,_bbe );}else {return nil ,_c .New ("\u0069n\u0076\u0061\u006c\u0069\u0064\u0020R");};if _cc !=nil {return nil ,_cc ;};_a .Log .Trace ("\u0063\u0068\u0065\u0063k:\u0020\u0025\u0020\u0078\u0020\u003d\u003d\u0020\u0025\u0020\u0078\u0020\u003f",string (_dde ),string (_cedd .U ));_gdd :=_dde ;_fea :=_cedd .U ;if _cedd .R >=3{if len (_gdd )> 16{_gdd =_gdd [0:16];};if len (_fea )> 16{_fea =_fea [0:16];};};if !_fa .Equal (_gdd ,_fea ){return nil ,nil ;};return _eaf ,nil ;};func _eea (_cfa []byte ,_eca int ){_fd :=_eca ;for _fd < len (_cfa ){copy (_cfa [_fd :],_cfa [:_fd ]);_fd *=2;};};
|
||||
|
||||
// GenerateParams is the algorithm opposite to alg2a (R>=5).
|
||||
// It generates U,O,UE,OE,Perms fields using AESv3 encryption.
|
||||
// There is no algorithm number assigned to this function in the spec.
|
||||
// It expects R, P and EncryptMetadata fields to be set.
|
||||
func (_ebgd stdHandlerR6 )GenerateParams (d *StdEncryptDict ,opass ,upass []byte )([]byte ,error ){_fde :=make ([]byte ,32);if _ ,_dfgb :=_g .ReadFull (_ef .Reader ,_fde );_dfgb !=nil {return nil ,_dfgb ;};d .U =nil ;d .O =nil ;d .UE =nil ;d .OE =nil ;d .Perms =nil ;if len (upass )> 127{upass =upass [:127];};if len (opass )> 127{opass =opass [:127];};if _ddd :=_ebgd .alg8 (d ,_fde ,upass );_ddd !=nil {return nil ,_ddd ;};if _gae :=_ebgd .alg9 (d ,_fde ,opass );_gae !=nil {return nil ,_gae ;};if d .R ==5{return _fde ,nil ;};if _gdf :=_ebgd .alg10 (d ,_fde );_gdf !=nil {return nil ,_gdf ;};return _fde ,nil ;};func (_bc stdHandlerR4 )alg2 (_ffc *StdEncryptDict ,_gb []byte )[]byte {_a .Log .Trace ("\u0061\u006c\u0067\u0032");_eaa :=_bc .paddedPass (_gb );_dcgg :=_ea .New ();_dcgg .Write (_eaa );_dcgg .Write (_ffc .O );var _gd [4]byte ;_dca .LittleEndian .PutUint32 (_gd [:],uint32 (_ffc .P ));_dcgg .Write (_gd [:]);_a .Log .Trace ("\u0067o\u0020\u0050\u003a\u0020\u0025\u0020x",_gd );_dcgg .Write ([]byte (_bc .ID0 ));_a .Log .Trace ("\u0074\u0068\u0069\u0073\u002e\u0052\u0020\u003d\u0020\u0025d\u0020\u0065\u006e\u0063\u0072\u0079\u0070t\u004d\u0065\u0074\u0061\u0064\u0061\u0074\u0061\u0020\u0025\u0076",_ffc .R ,_ffc .EncryptMetadata );if (_ffc .R >=4)&&!_ffc .EncryptMetadata {_dcgg .Write ([]byte {0xff,0xff,0xff,0xff});};_efd :=_dcgg .Sum (nil );if _ffc .R >=3{_dcgg =_ea .New ();for _gdg :=0;_gdg < 50;_gdg ++{_dcgg .Reset ();_dcgg .Write (_efd [0:_bc .Length /8]);_efd =_dcgg .Sum (nil );};};if _ffc .R >=3{return _efd [0:_bc .Length /8];};return _efd [0:5];};
|
||||
// Authenticate implements StdHandler interface.
|
||||
func (_fca stdHandlerR6 )Authenticate (d *StdEncryptDict ,pass []byte )([]byte ,Permissions ,error ){return _fca .alg2a (d ,pass );};func _fg (_bf ,_cc string ,_de int ,_ee []byte )error {if len (_ee )< _de {return errInvalidField {Func :_bf ,Field :_cc ,Exp :_de ,Got :len (_ee )};};return nil ;};func (_eab *ecbDecrypter )BlockSize ()int {return _eab ._f };func (_ab *ecbDecrypter )CryptBlocks (dst ,src []byte ){if len (src )%_ab ._f !=0{_aa .Log .Error ("\u0045\u0052\u0052\u004f\u0052:\u0020\u0045\u0043\u0042\u0020\u0064\u0065\u0063\u0072\u0079\u0070\u0074\u003a \u0069\u006e\u0070\u0075\u0074\u0020\u006e\u006f\u0074\u0020\u0066\u0075\u006c\u006c\u0020\u0062\u006c\u006f\u0063\u006b\u0073");return ;};if len (dst )< len (src ){_aa .Log .Error ("\u0045R\u0052\u004fR\u003a\u0020\u0045C\u0042\u0020\u0064\u0065\u0063\u0072\u0079p\u0074\u003a\u0020\u006f\u0075\u0074p\u0075\u0074\u0020\u0073\u006d\u0061\u006c\u006c\u0065\u0072\u0020t\u0068\u0061\u006e\u0020\u0069\u006e\u0070\u0075\u0074");return ;};for len (src )> 0{_ab ._ea .Decrypt (dst ,src [:_ab ._f ]);src =src [_ab ._f :];dst =dst [_ab ._f :];};};func (_bdf stdHandlerR4 )alg4 (_fef []byte ,_eccg []byte )([]byte ,error ){_cf ,_eed :=_ca .NewCipher (_fef );if _eed !=nil {return nil ,_ge .New ("\u0066a\u0069l\u0065\u0064\u0020\u0072\u0063\u0034\u0020\u0063\u0069\u0070\u0068");};_ecb :=[]byte (_abg );_feb :=make ([]byte ,len (_ecb ));_cf .XORKeyStream (_feb ,_ecb );return _feb ,nil ;};func (_dea stdHandlerR6 )alg12 (_ebd *StdEncryptDict ,_dff []byte )([]byte ,error ){if _dafd :=_fg ("\u0061\u006c\u00671\u0032","\u0055",48,_ebd .U );_dafd !=nil {return nil ,_dafd ;};if _cbaf :=_fg ("\u0061\u006c\u00671\u0032","\u004f",48,_ebd .O );_cbaf !=nil {return nil ,_cbaf ;};_dagd :=make ([]byte ,len (_dff )+8+48);_be :=copy (_dagd ,_dff );_be +=copy (_dagd [_be :],_ebd .O [32:40]);_be +=copy (_dagd [_be :],_ebd .U [0:48]);_gfa ,_abd :=_dea .alg2b (_ebd .R ,_dagd ,_dff ,_ebd .U [0:48]);if _abd !=nil {return nil ,_abd ;};_gfa =_gfa [:32];if !_gf .Equal (_gfa ,_ebd .O [:32]){return nil ,nil ;};return _gfa ,nil ;};type errInvalidField struct{Func string ;Field string ;Exp int ;Got int ;};func (_dfb stdHandlerR6 )alg2a (_aea *StdEncryptDict ,_gfb []byte )([]byte ,Permissions ,error ){if _afd :=_fg ("\u0061\u006c\u00672\u0061","\u004f",48,_aea .O );_afd !=nil {return nil ,0,_afd ;};if _fee :=_fg ("\u0061\u006c\u00672\u0061","\u0055",48,_aea .U );_fee !=nil {return nil ,0,_fee ;};if len (_gfb )> 127{_gfb =_gfb [:127];};_ceb ,_cadd :=_dfb .alg12 (_aea ,_gfb );if _cadd !=nil {return nil ,0,_cadd ;};var (_gbc []byte ;_aee []byte ;_db []byte ;);var _cfc Permissions ;if len (_ceb )!=0{_cfc =PermOwner ;_bbg :=make ([]byte ,len (_gfb )+8+48);_ecga :=copy (_bbg ,_gfb );_ecga +=copy (_bbg [_ecga :],_aea .O [40:48]);_ecga +=copy (_bbg [_ecga :],_aea .U [0:48]);_gbc =_bbg ;_aee =_aea .OE ;_db =_aea .U [0:48];}else {_ceb ,_cadd =_dfb .alg11 (_aea ,_gfb );if _cadd ==nil &&len (_ceb )==0{_ceb ,_cadd =_dfb .alg11 (_aea ,[]byte (""));};if _cadd !=nil {return nil ,0,_cadd ;}else if len (_ceb )==0{return nil ,0,nil ;};_cfc =_aea .P ;_ade :=make ([]byte ,len (_gfb )+8);_dec :=copy (_ade ,_gfb );_dec +=copy (_ade [_dec :],_aea .U [40:48]);_gbc =_ade ;_aee =_aea .UE ;_db =nil ;};if _aaf :=_fg ("\u0061\u006c\u00672\u0061","\u004b\u0065\u0079",32,_aee );_aaf !=nil {return nil ,0,_aaf ;};_aee =_aee [:32];_dg ,_cadd :=_dfb .alg2b (_aea .R ,_gbc ,_gfb ,_db );if _cadd !=nil {return nil ,0,_cadd ;};_gfd ,_cadd :=_g .NewCipher (_dg [:32]);if _cadd !=nil {return nil ,0,_cadd ;};_abcb :=make ([]byte ,_g .BlockSize );_fda :=_c .NewCBCDecrypter (_gfd ,_abcb );_baf :=make ([]byte ,32);_fda .CryptBlocks (_baf ,_aee );if _aea .R ==5{return _baf ,_cfc ,nil ;};_cadd =_dfb .alg13 (_aea ,_baf );if _cadd !=nil {return nil ,0,_cadd ;};return _baf ,_cfc ,nil ;};
|
||||
|
||||
// GenerateParams generates and sets O and U parameters for the encryption dictionary.
|
||||
// It expects R, P and EncryptMetadata fields to be set.
|
||||
func (_bee stdHandlerR4 )GenerateParams (d *StdEncryptDict ,opass ,upass []byte )([]byte ,error ){O ,_bcgc :=_bee .alg3 (d .R ,upass ,opass );if _bcgc !=nil {_a .Log .Debug ("\u0045R\u0052\u004fR\u003a\u0020\u0045r\u0072\u006f\u0072\u0020\u0067\u0065\u006ee\u0072\u0061\u0074\u0069\u006e\u0067 \u004f\u0020\u0066\u006f\u0072\u0020\u0065\u006e\u0063\u0072\u0079p\u0074\u0069\u006f\u006e\u0020\u0028\u0025\u0073\u0029",_bcgc );return nil ,_bcgc ;};d .O =O ;_a .Log .Trace ("\u0067\u0065\u006e\u0020\u004f\u003a\u0020\u0025\u0020\u0078",O );_ecd :=_bee .alg2 (d ,upass );U ,_bcgc :=_bee .alg5 (_ecd ,upass );if _bcgc !=nil {_a .Log .Debug ("\u0045R\u0052\u004fR\u003a\u0020\u0045r\u0072\u006f\u0072\u0020\u0067\u0065\u006ee\u0072\u0061\u0074\u0069\u006e\u0067 \u004f\u0020\u0066\u006f\u0072\u0020\u0065\u006e\u0063\u0072\u0079p\u0074\u0069\u006f\u006e\u0020\u0028\u0025\u0073\u0029",_bcgc );return nil ,_bcgc ;};d .U =U ;_a .Log .Trace ("\u0067\u0065\u006e\u0020\u0055\u003a\u0020\u0025\u0020\u0078",U );return _ecd ,nil ;};func _gge (_bea ,_bdfa ,_ag []byte )([]byte ,error ){var (_bbc ,_bgc ,_beae _eb .Hash ;);_bbc =_dc .New ();_abf :=make ([]byte ,64);_aeg :=_bbc ;_aeg .Write (_bea );K :=_aeg .Sum (_abf [:0]);_bdcd :=make ([]byte ,64*(127+64+48));_aeec :=func (_daf int )([]byte ,error ){_bad :=len (_bdfa )+len (K )+len (_ag );_gff :=_bdcd [:_bad ];_fgdc :=copy (_gff ,_bdfa );_fgdc +=copy (_gff [_fgdc :],K [:]);_fgdc +=copy (_gff [_fgdc :],_ag );if _fgdc !=_bad {_a .Log .Error ("E\u0052\u0052\u004f\u0052\u003a\u0020u\u006e\u0065\u0078\u0070\u0065\u0063t\u0065\u0064\u0020\u0072\u006f\u0075\u006ed\u0020\u0069\u006e\u0070\u0075\u0074\u0020\u0073\u0069\u007ae\u002e");return nil ,_c .New ("\u0077\u0072\u006f\u006e\u0067\u0020\u0073\u0069\u007a\u0065");};K1 :=_bdcd [:_bad *64];_eea (K1 ,_bad );_eee ,_dgb :=_adea (K [0:16]);if _dgb !=nil {return nil ,_dgb ;};_adg :=_e .NewCBCEncrypter (_eee ,K [16:32]);_adg .CryptBlocks (K1 ,K1 );E :=K1 ;_cbaa :=0;for _ccf :=0;_ccf < 16;_ccf ++{_cbaa +=int (E [_ccf ]%3);};var _cfg _eb .Hash ;switch _cbaa %3{case 0:_cfg =_bbc ;case 1:if _bgc ==nil {_bgc =_gc .New384 ();};_cfg =_bgc ;case 2:if _beae ==nil {_beae =_gc .New ();};_cfg =_beae ;};_cfg .Reset ();_cfg .Write (E );K =_cfg .Sum (_abf [:0]);return E ,nil ;};for _ebd :=0;;{E ,_cab :=_aeec (_ebd );if _cab !=nil {return nil ,_cab ;};_bae :=uint8 (E [len (E )-1]);_ebd ++;if _ebd >=64&&_bae <=uint8 (_ebd -32){break ;};};return K [:32],nil ;};func (_aca stdHandlerR6 )alg12 (_aefc *StdEncryptDict ,_bdbe []byte )([]byte ,error ){if _fbfa :=_dga ("\u0061\u006c\u00671\u0032","\u0055",48,_aefc .U );_fbfa !=nil {return nil ,_fbfa ;};if _agg :=_dga ("\u0061\u006c\u00671\u0032","\u004f",48,_aefc .O );_agg !=nil {return nil ,_agg ;};_gbef :=make ([]byte ,len (_bdbe )+8+48);_cbge :=copy (_gbef ,_bdbe );_cbge +=copy (_gbef [_cbge :],_aefc .O [32:40]);_cbge +=copy (_gbef [_cbge :],_aefc .U [0:48]);_cca ,_geba :=_aca .alg2b (_aefc .R ,_gbef ,_bdbe ,_aefc .U [0:48]);if _geba !=nil {return nil ,_geba ;};_cca =_cca [:32];if !_fa .Equal (_cca ,_aefc .O [:32]){return nil ,nil ;};return _cca ,nil ;};
|
||||
|
||||
// AuthEvent is an event type that triggers authentication.
|
||||
type AuthEvent string ;func _af (_ccc []byte )([]byte ,error ){_efeg :=_dc .New ();_efeg .Write (_ccc );return _efeg .Sum (nil ),nil ;};func (_eadc stdHandlerR4 )alg5 (_bbd []byte ,_eba []byte )([]byte ,error ){_ced :=_ea .New ();_ced .Write ([]byte (_bdf ));_ced .Write ([]byte (_eadc .ID0 ));_dcag :=_ced .Sum (nil );_a .Log .Trace ("\u0061\u006c\u0067\u0035");_a .Log .Trace ("\u0065k\u0065\u0079\u003a\u0020\u0025\u0020x",_bbd );_a .Log .Trace ("\u0049D\u003a\u0020\u0025\u0020\u0078",_eadc .ID0 );if len (_dcag )!=16{return nil ,_c .New ("\u0068a\u0073\u0068\u0020\u006c\u0065\u006e\u0067\u0074\u0068\u0020\u006eo\u0074\u0020\u0031\u0036\u0020\u0062\u0079\u0074\u0065\u0073");};_feg ,_bda :=_cd .NewCipher (_bbd );if _bda !=nil {return nil ,_c .New ("\u0066a\u0069l\u0065\u0064\u0020\u0072\u0063\u0034\u0020\u0063\u0069\u0070\u0068");};_efe :=make ([]byte ,16);_feg .XORKeyStream (_efe ,_dcag );_fac :=make ([]byte ,len (_bbd ));for _aaf :=0;_aaf < 19;_aaf ++{for _edg :=0;_edg < len (_bbd );_edg ++{_fac [_edg ]=_bbd [_edg ]^byte (_aaf +1);};_feg ,_bda =_cd .NewCipher (_fac );if _bda !=nil {return nil ,_c .New ("\u0066a\u0069l\u0065\u0064\u0020\u0072\u0063\u0034\u0020\u0063\u0069\u0070\u0068");};_feg .XORKeyStream (_efe ,_efe );_a .Log .Trace ("\u0069\u0020\u003d\u0020\u0025\u0064\u002c\u0020\u0065\u006b\u0065\u0079:\u0020\u0025\u0020\u0078",_aaf ,_fac );_a .Log .Trace ("\u0069\u0020\u003d\u0020\u0025\u0064\u0020\u002d\u003e\u0020\u0025\u0020\u0078",_aaf ,_efe );};_dd :=make ([]byte ,32);for _be :=0;_be < 16;_be ++{_dd [_be ]=_efe [_be ];};_ ,_bda =_ef .Read (_dd [16:32]);if _bda !=nil {return nil ,_c .New ("\u0066a\u0069\u006c\u0065\u0064 \u0074\u006f\u0020\u0067\u0065n\u0020r\u0061n\u0064\u0020\u006e\u0075\u006d\u0062\u0065r");};return _dd ,nil ;};func _dga (_cdf ,_cb string ,_gcc int ,_ab []byte )error {if len (_ab )< _gcc {return errInvalidField {Func :_cdf ,Field :_cb ,Exp :_gcc ,Got :len (_ab )};};return nil ;};
|
||||
|
||||
// Authenticate implements StdHandler interface.
|
||||
func (_ged stdHandlerR6 )Authenticate (d *StdEncryptDict ,pass []byte )([]byte ,Permissions ,error ){return _ged .alg2a (d ,pass );};
|
||||
|
||||
// Permissions is a bitmask of access permissions for a PDF file.
|
||||
type Permissions uint32 ;type stdHandlerR6 struct{};func _adea (_ac []byte )(_e .Block ,error ){_bcc ,_dfgd :=_f .NewCipher (_ac );if _dfgd !=nil {_a .Log .Error ("\u0045\u0052\u0052\u004f\u0052\u003a\u0020\u0063\u006f\u0075\u006c\u0064\u0020\u006e\u006f\u0074\u0020\u0063\u0072\u0065\u0061\u0074\u0065\u0020A\u0045\u0053\u0020\u0063\u0069p\u0068\u0065r\u003a\u0020\u0025\u0076",_dfgd );return nil ,_dfgd ;};return _bcc ,nil ;};type ecb struct{_ad _e .Block ;_de int ;};func (_gef stdHandlerR6 )alg13 (_gebd *StdEncryptDict ,_aeeba []byte )error {if _caba :=_dga ("\u0061\u006c\u00671\u0033","\u004b\u0065\u0079",32,_aeeba );_caba !=nil {return _caba ;};if _eae :=_dga ("\u0061\u006c\u00671\u0033","\u0050\u0065\u0072m\u0073",16,_gebd .Perms );_eae !=nil {return _eae ;};_afc :=make ([]byte ,16);copy (_afc ,_gebd .Perms [:16]);_ffa ,_fefe :=_f .NewCipher (_aeeba [:32]);if _fefe !=nil {return _fefe ;};_ddg :=_aa (_ffa );_ddg .CryptBlocks (_afc ,_afc );if !_fa .Equal (_afc [9:12],[]byte ("\u0061\u0064\u0062")){return _c .New ("\u0064\u0065\u0063o\u0064\u0065\u0064\u0020p\u0065\u0072\u006d\u0069\u0073\u0073\u0069o\u006e\u0073\u0020\u0061\u0072\u0065\u0020\u0069\u006e\u0076\u0061\u006c\u0069\u0064");};_dfb :=Permissions (_dca .LittleEndian .Uint32 (_afc [0:4]));if _dfb !=_gebd .P {return _c .New ("\u0070\u0065r\u006d\u0069\u0073\u0073\u0069\u006f\u006e\u0073\u0020\u0076\u0061\u006c\u0069\u0064\u0061\u0074\u0069\u006f\u006e\u0020\u0066\u0061il\u0065\u0064");};_dfbc :=true ;if _afc [8]=='T'{_dfbc =true ;}else if _afc [8]=='F'{_dfbc =false ;}else {return _c .New ("\u0064\u0065\u0063\u006f\u0064\u0065\u0064 \u006d\u0065\u0074a\u0064\u0061\u0074\u0061 \u0065\u006e\u0063\u0072\u0079\u0070\u0074\u0069\u006f\u006e\u0020\u0066\u006c\u0061\u0067\u0020\u0069\u0073\u0020\u0069\u006e\u0076\u0061\u006c\u0069\u0064");};if _dfbc !=_gebd .EncryptMetadata {return _c .New ("\u006d\u0065t\u0061\u0064\u0061\u0074a\u0020\u0065n\u0063\u0072\u0079\u0070\u0074\u0069\u006f\u006e \u0076\u0061\u006c\u0069\u0064\u0061\u0074\u0069\u006f\u006e\u0020\u0066a\u0069\u006c\u0065\u0064");};return nil ;};func (_debe stdHandlerR6 )alg2b (R int ,_agc ,_aegf ,_eab []byte )([]byte ,error ){if R ==5{return _af (_agc );};return _gge (_agc ,_aegf ,_eab );};
|
||||
|
||||
// Authenticate implements StdHandler interface.
|
||||
func (_eda stdHandlerR4 )Authenticate (d *StdEncryptDict ,pass []byte )([]byte ,Permissions ,error ){_a .Log .Trace ("\u0044\u0065b\u0075\u0067\u0067\u0069n\u0067\u0020a\u0075\u0074\u0068\u0065\u006e\u0074\u0069\u0063a\u0074\u0069\u006f\u006e\u0020\u002d\u0020\u006f\u0077\u006e\u0065\u0072 \u0070\u0061\u0073\u0073");_cebd ,_ebg :=_eda .alg7 (d ,pass );if _ebg !=nil {return nil ,0,_ebg ;};if _cebd !=nil {_a .Log .Trace ("\u0074h\u0069\u0073\u002e\u0061u\u0074\u0068\u0065\u006e\u0074i\u0063a\u0074e\u0064\u0020\u003d\u0020\u0054\u0072\u0075e");return _cebd ,PermOwner ,nil ;};_a .Log .Trace ("\u0044\u0065bu\u0067\u0067\u0069n\u0067\u0020\u0061\u0075the\u006eti\u0063\u0061\u0074\u0069\u006f\u006e\u0020- \u0075\u0073\u0065\u0072\u0020\u0070\u0061s\u0073");_cebd ,_ebg =_eda .alg6 (d ,pass );if _ebg !=nil {return nil ,0,_ebg ;};if _cebd !=nil {_a .Log .Trace ("\u0074h\u0069\u0073\u002e\u0061u\u0074\u0068\u0065\u006e\u0074i\u0063a\u0074e\u0064\u0020\u003d\u0020\u0054\u0072\u0075e");return _cebd ,d .P ,nil ;};return nil ,0,nil ;};func (_bcg stdHandlerR4 )alg4 (_faf []byte ,_feb []byte )([]byte ,error ){_ade ,_gfc :=_cd .NewCipher (_faf );if _gfc !=nil {return nil ,_c .New ("\u0066a\u0069l\u0065\u0064\u0020\u0072\u0063\u0034\u0020\u0063\u0069\u0070\u0068");};_fc :=[]byte (_bdf );_gfcf :=make ([]byte ,len (_fc ));_ade .XORKeyStream (_gfcf ,_fc );return _gfcf ,nil ;};func (_egg stdHandlerR6 )alg11 (_bac *StdEncryptDict ,_abbe []byte )([]byte ,error ){if _cdb :=_dga ("\u0061\u006c\u00671\u0031","\u0055",48,_bac .U );_cdb !=nil {return nil ,_cdb ;};_fgf :=make ([]byte ,len (_abbe )+8);_efg :=copy (_fgf ,_abbe );_efg +=copy (_fgf [_efg :],_bac .U [32:40]);_fbf ,_afe :=_egg .alg2b (_bac .R ,_fgf ,_abbe ,nil );if _afe !=nil {return nil ,_afe ;};_fbf =_fbf [:32];if !_fa .Equal (_fbf ,_bac .U [:32]){return nil ,nil ;};return _fbf ,nil ;};const _bdf ="\x28\277\116\136\x4e\x75\x8a\x41\x64\000\x4e\x56\377"+"\xfa\001\010\056\x2e\x00\xb6\xd0\x68\076\x80\x2f\014"+"\251\xfe\x64\x53\x69\172";func (stdHandlerR4 )paddedPass (_df []byte )[]byte {_ca :=make ([]byte ,32);_bg :=copy (_ca ,_df );for ;_bg < 32;_bg ++{_ca [_bg ]=_bdf [_bg -len (_df )];};return _ca ;};var _ StdHandler =stdHandlerR6 {};func _ggg (_b _e .Block )_e .BlockMode {return (*ecbEncrypter )(_gg (_b ))};func (_abe stdHandlerR6 )alg10 (_fabb *StdEncryptDict ,_aab []byte )error {if _cfcc :=_dga ("\u0061\u006c\u00671\u0030","\u004b\u0065\u0079",32,_aab );_cfcc !=nil {return _cfcc ;};_dgae :=uint64 (uint32 (_fabb .P ))|(_ff .MaxUint32 <<32);Perms :=make ([]byte ,16);_dca .LittleEndian .PutUint64 (Perms [:8],_dgae );if _fabb .EncryptMetadata {Perms [8]='T';}else {Perms [8]='F';};copy (Perms [9:12],"\u0061\u0064\u0062");if _ ,_bfb :=_g .ReadFull (_ef .Reader ,Perms [12:16]);_bfb !=nil {return _bfb ;};_cgfc ,_aaac :=_adea (_aab [:32]);if _aaac !=nil {return _aaac ;};_fbg :=_ggg (_cgfc );_fbg .CryptBlocks (Perms ,Perms );_fabb .Perms =Perms [:16];return nil ;};
|
||||
func (_bfe stdHandlerR4 )GenerateParams (d *StdEncryptDict ,opass ,upass []byte )([]byte ,error ){O ,_fdb :=_bfe .alg3 (d .R ,upass ,opass );if _fdb !=nil {_aa .Log .Debug ("\u0045R\u0052\u004fR\u003a\u0020\u0045r\u0072\u006f\u0072\u0020\u0067\u0065\u006ee\u0072\u0061\u0074\u0069\u006e\u0067 \u004f\u0020\u0066\u006f\u0072\u0020\u0065\u006e\u0063\u0072\u0079p\u0074\u0069\u006f\u006e\u0020\u0028\u0025\u0073\u0029",_fdb );return nil ,_fdb ;};d .O =O ;_aa .Log .Trace ("\u0067\u0065\u006e\u0020\u004f\u003a\u0020\u0025\u0020\u0078",O );_gca :=_bfe .alg2 (d ,upass );U ,_fdb :=_bfe .alg5 (_gca ,upass );if _fdb !=nil {_aa .Log .Debug ("\u0045R\u0052\u004fR\u003a\u0020\u0045r\u0072\u006f\u0072\u0020\u0067\u0065\u006ee\u0072\u0061\u0074\u0069\u006e\u0067 \u004f\u0020\u0066\u006f\u0072\u0020\u0065\u006e\u0063\u0072\u0079p\u0074\u0069\u006f\u006e\u0020\u0028\u0025\u0073\u0029",_fdb );return nil ,_fdb ;};d .U =U ;_aa .Log .Trace ("\u0067\u0065\u006e\u0020\u0055\u003a\u0020\u0025\u0020\u0078",U );return _gca ,nil ;};type ecbEncrypter ecb ;func (_cda stdHandlerR6 )alg11 (_ffa *StdEncryptDict ,_aae []byte )([]byte ,error ){if _dgca :=_fg ("\u0061\u006c\u00671\u0031","\u0055",48,_ffa .U );_dgca !=nil {return nil ,_dgca ;};_efee :=make ([]byte ,len (_aae )+8);_decba :=copy (_efee ,_aae );_decba +=copy (_efee [_decba :],_ffa .U [32:40]);_adb ,_ffb :=_cda .alg2b (_ffa .R ,_efee ,_aae ,nil );if _ffb !=nil {return nil ,_ffb ;};_adb =_adb [:32];if !_gf .Equal (_adb ,_ffa .U [:32]){return nil ,nil ;};return _adb ,nil ;};func _gd (_aag _c .Block )*ecb {return &ecb {_ea :_aag ,_f :_aag .BlockSize ()}};func _egc (_bcg []byte )([]byte ,error ){_ebe :=_bd .New ();_ebe .Write (_bcg );return _ebe .Sum (nil ),nil ;};type ecb struct{_ea _c .Block ;_f int ;};func (_gfea stdHandlerR6 )alg8 (_bbf *StdEncryptDict ,_bcea []byte ,_ddc []byte )error {if _ddcb :=_fg ("\u0061\u006c\u0067\u0038","\u004b\u0065\u0079",32,_bcea );_ddcb !=nil {return _ddcb ;};var _efd [16]byte ;if _ ,_fbf :=_ce .ReadFull (_af .Reader ,_efd [:]);_fbf !=nil {return _fbf ;};_dac :=_efd [0:8];_adf :=_efd [8:16];_ebb :=make ([]byte ,len (_ddc )+len (_dac ));_ede :=copy (_ebb ,_ddc );_ede +=copy (_ebb [_ede :],_dac );_ccbg ,_eec :=_gfea .alg2b (_bbf .R ,_ebb ,_ddc ,nil );if _eec !=nil {return _eec ;};U :=make ([]byte ,len (_ccbg )+len (_dac )+len (_adf ));_ede =copy (U ,_ccbg [:32]);_ede +=copy (U [_ede :],_dac );_ede +=copy (U [_ede :],_adf );_bbf .U =U ;_ede =len (_ddc );_ede +=copy (_ebb [_ede :],_adf );_ccbg ,_eec =_gfea .alg2b (_bbf .R ,_ebb ,_ddc ,nil );if _eec !=nil {return _eec ;};_dbd ,_eec :=_eg (_ccbg [:32]);if _eec !=nil {return _eec ;};_gdda :=make ([]byte ,_g .BlockSize );_cfge :=_c .NewCBCEncrypter (_dbd ,_gdda );UE :=make ([]byte ,32);_cfge .CryptBlocks (UE ,_bcea [:32]);_bbf .UE =UE ;return nil ;};
|
||||
|
||||
// StdEncryptDict is a set of additional fields used in standard encryption dictionary.
|
||||
type StdEncryptDict struct{R int ;P Permissions ;EncryptMetadata bool ;O ,U []byte ;OE ,UE []byte ;Perms []byte ;};func (_abb stdHandlerR4 )alg7 (_feac *StdEncryptDict ,_dcb []byte )([]byte ,error ){_aea :=_abb .alg3Key (_feac .R ,_dcb );_bba :=make ([]byte ,len (_feac .O ));if _feac .R ==2{_bf ,_aaff :=_cd .NewCipher (_aea );if _aaff !=nil {return nil ,_c .New ("\u0066\u0061\u0069\u006c\u0065\u0064\u0020\u0063\u0069\u0070\u0068\u0065\u0072");};_bf .XORKeyStream (_bba ,_feac .O );}else if _feac .R >=3{_baa :=append ([]byte {},_feac .O ...);for _ceb :=0;_ceb < 20;_ceb ++{_aee :=append ([]byte {},_aea ...);for _ffg :=0;_ffg < len (_aea );_ffg ++{_aee [_ffg ]^=byte (19-_ceb );};_egb ,_eada :=_cd .NewCipher (_aee );if _eada !=nil {return nil ,_c .New ("\u0066\u0061\u0069\u006c\u0065\u0064\u0020\u0063\u0069\u0070\u0068\u0065\u0072");};_egb .XORKeyStream (_bba ,_baa );_baa =append ([]byte {},_bba ...);};}else {return nil ,_c .New ("\u0069n\u0076\u0061\u006c\u0069\u0064\u0020R");};_ggb ,_deb :=_abb .alg6 (_feac ,_bba );if _deb !=nil {return nil ,nil ;};return _ggb ,nil ;};func (_fefd stdHandlerR6 )alg9 (_bfcf *StdEncryptDict ,_gggd []byte ,_ebb []byte )error {if _ddeb :=_dga ("\u0061\u006c\u0067\u0039","\u004b\u0065\u0079",32,_gggd );_ddeb !=nil {return _ddeb ;};if _fab :=_dga ("\u0061\u006c\u0067\u0039","\u0055",48,_bfcf .U );_fab !=nil {return _fab ;};var _eec [16]byte ;if _ ,_fcf :=_g .ReadFull (_ef .Reader ,_eec [:]);_fcf !=nil {return _fcf ;};_ggf :=_eec [0:8];_cbg :=_eec [8:16];_dgf :=_bfcf .U [:48];_ggfe :=make ([]byte ,len (_ebb )+len (_ggf )+len (_dgf ));_geb :=copy (_ggfe ,_ebb );_geb +=copy (_ggfe [_geb :],_ggf );_geb +=copy (_ggfe [_geb :],_dgf );_gfd ,_fcg :=_fefd .alg2b (_bfcf .R ,_ggfe ,_ebb ,_dgf );if _fcg !=nil {return _fcg ;};O :=make ([]byte ,len (_gfd )+len (_ggf )+len (_cbg ));_geb =copy (O ,_gfd [:32]);_geb +=copy (O [_geb :],_ggf );_geb +=copy (O [_geb :],_cbg );_bfcf .O =O ;_geb =len (_ebb );_geb +=copy (_ggfe [_geb :],_cbg );_gfd ,_fcg =_fefd .alg2b (_bfcf .R ,_ggfe ,_ebb ,_dgf );if _fcg !=nil {return _fcg ;};_acg ,_fcg :=_adea (_gfd [:32]);if _fcg !=nil {return _fcg ;};_fcec :=make ([]byte ,_f .BlockSize );_dba :=_e .NewCBCEncrypter (_acg ,_fcec );OE :=make ([]byte ,32);_dba .CryptBlocks (OE ,_gggd [:32]);_bfcf .OE =OE ;return nil ;};
|
||||
type StdEncryptDict struct{R int ;P Permissions ;EncryptMetadata bool ;O ,U []byte ;OE ,UE []byte ;Perms []byte ;};
|
||||
|
||||
// NewHandlerR6 creates a new standard security handler for R=5 and R=6.
|
||||
func NewHandlerR6 ()StdHandler {return stdHandlerR6 {}};
|
||||
|
||||
// Authenticate implements StdHandler interface.
|
||||
func (_ccge stdHandlerR4 )Authenticate (d *StdEncryptDict ,pass []byte )([]byte ,Permissions ,error ){_aa .Log .Trace ("\u0044\u0065b\u0075\u0067\u0067\u0069n\u0067\u0020a\u0075\u0074\u0068\u0065\u006e\u0074\u0069\u0063a\u0074\u0069\u006f\u006e\u0020\u002d\u0020\u006f\u0077\u006e\u0065\u0072 \u0070\u0061\u0073\u0073");_gedd ,_bfd :=_ccge .alg7 (d ,pass );if _bfd !=nil {return nil ,0,_bfd ;};if _gedd !=nil {_aa .Log .Trace ("\u0074h\u0069\u0073\u002e\u0061u\u0074\u0068\u0065\u006e\u0074i\u0063a\u0074e\u0064\u0020\u003d\u0020\u0054\u0072\u0075e");return _gedd ,PermOwner ,nil ;};_aa .Log .Trace ("\u0044\u0065bu\u0067\u0067\u0069n\u0067\u0020\u0061\u0075the\u006eti\u0063\u0061\u0074\u0069\u006f\u006e\u0020- \u0075\u0073\u0065\u0072\u0020\u0070\u0061s\u0073");_gedd ,_bfd =_ccge .alg6 (d ,pass );if _bfd !=nil {return nil ,0,_bfd ;};if _gedd !=nil {_aa .Log .Trace ("\u0074h\u0069\u0073\u002e\u0061u\u0074\u0068\u0065\u006e\u0074i\u0063a\u0074e\u0064\u0020\u003d\u0020\u0054\u0072\u0075e");return _gedd ,d .P ,nil ;};return nil ,0,nil ;};func _eg (_ecg []byte )(_c .Block ,error ){_daga ,_dfd :=_g .NewCipher (_ecg );if _dfd !=nil {_aa .Log .Error ("\u0045\u0052\u0052\u004f\u0052\u003a\u0020\u0063\u006f\u0075\u006c\u0064\u0020\u006e\u006f\u0074\u0020\u0063\u0072\u0065\u0061\u0074\u0065\u0020A\u0045\u0053\u0020\u0063\u0069p\u0068\u0065r\u003a\u0020\u0025\u0076",_dfd );return nil ,_dfd ;};return _daga ,nil ;};func (_cea stdHandlerR4 )alg2 (_eae *StdEncryptDict ,_fgc []byte )[]byte {_aa .Log .Trace ("\u0061\u006c\u0067\u0032");_gcd :=_cea .paddedPass (_fgc );_cgc :=_afg .New ();_cgc .Write (_gcd );_cgc .Write (_eae .O );var _gfc [4]byte ;_bdc .LittleEndian .PutUint32 (_gfc [:],uint32 (_eae .P ));_cgc .Write (_gfc [:]);_aa .Log .Trace ("\u0067o\u0020\u0050\u003a\u0020\u0025\u0020x",_gfc );_cgc .Write ([]byte (_cea .ID0 ));_aa .Log .Trace ("\u0074\u0068\u0069\u0073\u002e\u0052\u0020\u003d\u0020\u0025d\u0020\u0065\u006e\u0063\u0072\u0079\u0070t\u004d\u0065\u0074\u0061\u0064\u0061\u0074\u0061\u0020\u0025\u0076",_eae .R ,_eae .EncryptMetadata );if (_eae .R >=4)&&!_eae .EncryptMetadata {_cgc .Write ([]byte {0xff,0xff,0xff,0xff});};_ad :=_cgc .Sum (nil );if _eae .R >=3{_cgc =_afg .New ();for _ac :=0;_ac < 50;_ac ++{_cgc .Reset ();_cgc .Write (_ad [0:_cea .Length /8]);_ad =_cgc .Sum (nil );};};if _eae .R >=3{return _ad [0:_cea .Length /8];};return _ad [0:5];};func _fe (_cb _c .Block )_c .BlockMode {return (*ecbEncrypter )(_gd (_cb ))};const (EventDocOpen =AuthEvent ("\u0044o\u0063\u004f\u0070\u0065\u006e");EventEFOpen =AuthEvent ("\u0045\u0046\u004f\u0070\u0065\u006e"););func _egb (_dbc []byte ,_cbd int ){_dga :=_cbd ;for _dga < len (_dbc ){copy (_dbc [_dga :],_dbc [:_dga ]);_dga *=2;};};var _ StdHandler =stdHandlerR4 {};func (_ffc stdHandlerR6 )alg9 (_cab *StdEncryptDict ,_dcc []byte ,_bdb []byte )error {if _ecd :=_fg ("\u0061\u006c\u0067\u0039","\u004b\u0065\u0079",32,_dcc );_ecd !=nil {return _ecd ;};if _cge :=_fg ("\u0061\u006c\u0067\u0039","\u0055",48,_cab .U );_cge !=nil {return _cge ;};var _eff [16]byte ;if _ ,_eee :=_ce .ReadFull (_af .Reader ,_eff [:]);_eee !=nil {return _eee ;};_decb :=_eff [0:8];_cedb :=_eff [8:16];_bcbc :=_cab .U [:48];_fgge :=make ([]byte ,len (_bdb )+len (_decb )+len (_bcbc ));_cba :=copy (_fgge ,_bdb );_cba +=copy (_fgge [_cba :],_decb );_cba +=copy (_fgge [_cba :],_bcbc );_gdaa ,_dge :=_ffc .alg2b (_cab .R ,_fgge ,_bdb ,_bcbc );if _dge !=nil {return _dge ;};O :=make ([]byte ,len (_gdaa )+len (_decb )+len (_cedb ));_cba =copy (O ,_gdaa [:32]);_cba +=copy (O [_cba :],_decb );_cba +=copy (O [_cba :],_cedb );_cab .O =O ;_cba =len (_bdb );_cba +=copy (_fgge [_cba :],_cedb );_gdaa ,_dge =_ffc .alg2b (_cab .R ,_fgge ,_bdb ,_bcbc );if _dge !=nil {return _dge ;};_eeca ,_dge :=_eg (_gdaa [:32]);if _dge !=nil {return _dge ;};_afb :=make ([]byte ,_g .BlockSize );_gedc :=_c .NewCBCEncrypter (_eeca ,_afb );OE :=make ([]byte ,32);_gedc .CryptBlocks (OE ,_dcc [:32]);_cab .OE =OE ;return nil ;};func (_ed *ecbEncrypter )BlockSize ()int {return _ed ._f };
|
||||
|
||||
// Allowed checks if a set of permissions can be granted.
|
||||
func (_fcc Permissions )Allowed (p2 Permissions )bool {return _fcc &p2 ==p2 };func (_fac stdHandlerR4 )alg3Key (R int ,_cgb []byte )[]byte {_bcb :=_afg .New ();_bdg :=_fac .paddedPass (_cgb );_bcb .Write (_bdg );if R >=3{for _fge :=0;_fge < 50;_fge ++{_fcd :=_bcb .Sum (nil );_bcb =_afg .New ();_bcb .Write (_fcd );};};_bcd :=_bcb .Sum (nil );if R ==2{_bcd =_bcd [0:5];}else {_bcd =_bcd [0:_fac .Length /8];};return _bcd ;};func _ef (_fc _c .Block )_c .BlockMode {return (*ecbDecrypter )(_gd (_fc ))};func (_cca errInvalidField )Error ()string {return _e .Sprintf ("\u0025s\u003a\u0020e\u0078\u0070\u0065\u0063t\u0065\u0064\u0020%\u0073\u0020\u0066\u0069\u0065\u006c\u0064\u0020\u0074o \u0062\u0065\u0020%\u0064\u0020b\u0079\u0074\u0065\u0073\u002c\u0020g\u006f\u0074 \u0025\u0064",_cca .Func ,_cca .Field ,_cca .Exp ,_cca .Got );};
|
||||
|
||||
// Permissions is a bitmask of access permissions for a PDF file.
|
||||
type Permissions uint32 ;func (_bda stdHandlerR4 )alg5 (_fb []byte ,_cga []byte )([]byte ,error ){_cad :=_afg .New ();_cad .Write ([]byte (_abg ));_cad .Write ([]byte (_bda .ID0 ));_fgg :=_cad .Sum (nil );_aa .Log .Trace ("\u0061\u006c\u0067\u0035");_aa .Log .Trace ("\u0065k\u0065\u0079\u003a\u0020\u0025\u0020x",_fb );_aa .Log .Trace ("\u0049D\u003a\u0020\u0025\u0020\u0078",_bda .ID0 );if len (_fgg )!=16{return nil ,_ge .New ("\u0068a\u0073\u0068\u0020\u006c\u0065\u006e\u0067\u0074\u0068\u0020\u006eo\u0074\u0020\u0031\u0036\u0020\u0062\u0079\u0074\u0065\u0073");};_fbb ,_daf :=_ca .NewCipher (_fb );if _daf !=nil {return nil ,_ge .New ("\u0066a\u0069l\u0065\u0064\u0020\u0072\u0063\u0034\u0020\u0063\u0069\u0070\u0068");};_ccg :=make ([]byte ,16);_fbb .XORKeyStream (_ccg ,_fgg );_dag :=make ([]byte ,len (_fb ));for _ageg :=0;_ageg < 19;_ageg ++{for _df :=0;_df < len (_fb );_df ++{_dag [_df ]=_fb [_df ]^byte (_ageg +1);};_fbb ,_daf =_ca .NewCipher (_dag );if _daf !=nil {return nil ,_ge .New ("\u0066a\u0069l\u0065\u0064\u0020\u0072\u0063\u0034\u0020\u0063\u0069\u0070\u0068");};_fbb .XORKeyStream (_ccg ,_ccg );_aa .Log .Trace ("\u0069\u0020\u003d\u0020\u0025\u0064\u002c\u0020\u0065\u006b\u0065\u0079:\u0020\u0025\u0020\u0078",_ageg ,_dag );_aa .Log .Trace ("\u0069\u0020\u003d\u0020\u0025\u0064\u0020\u002d\u003e\u0020\u0025\u0020\u0078",_ageg ,_ccg );};_gdf :=make ([]byte ,32);for _ecf :=0;_ecf < 16;_ecf ++{_gdf [_ecf ]=_ccg [_ecf ];};_ ,_daf =_af .Read (_gdf [16:32]);if _daf !=nil {return nil ,_ge .New ("\u0066a\u0069\u006c\u0065\u0064 \u0074\u006f\u0020\u0067\u0065n\u0020r\u0061n\u0064\u0020\u006e\u0075\u006d\u0062\u0065r");};return _gdf ,nil ;};const (PermOwner =Permissions (_da .MaxUint32 );PermPrinting =Permissions (1<<2);PermModify =Permissions (1<<3);PermExtractGraphics =Permissions (1<<4);PermAnnotate =Permissions (1<<5);PermFillForms =Permissions (1<<8);PermDisabilityExtract =Permissions (1<<9);PermRotateInsert =Permissions (1<<10);PermFullPrintQuality =Permissions (1<<11););
|
||||
2366
creator/creator.go
2366
creator/creator.go
File diff suppressed because one or more lines are too long
File diff suppressed because one or more lines are too long
22
fdf/fdf.go
22
fdf/fdf.go
File diff suppressed because one or more lines are too long
@ -10,28 +10,28 @@
|
||||
// terms that can be accessed at https://unidoc.io/eula/
|
||||
|
||||
// Package fjson provides support for loading PDF form field data from JSON data/files.
|
||||
package fjson ;import (_g "encoding/json";_e "github.com/unidoc/unipdf/v3/core";_ea "github.com/unidoc/unipdf/v3/model";_fd "io";_f "os";);type fieldValue struct{Name string `json:"name"`;Value string `json:"value"`;
|
||||
package fjson ;import (_bd "encoding/json";_db "github.com/unidoc/unipdf/v3/core";_e "github.com/unidoc/unipdf/v3/model";_d "io";_a "os";);
|
||||
|
||||
// FieldValues implements model.FieldValueProvider interface.
|
||||
func (_cee *FieldData )FieldValues ()(map[string ]_db .PdfObject ,error ){_cba :=make (map[string ]_db .PdfObject );for _ ,_dcg :=range _cee ._ef {if len (_dcg .Value )> 0{_cba [_dcg .Name ]=_db .MakeString (_dcg .Value );};};return _cba ,nil ;};
|
||||
|
||||
// LoadFromJSONFile loads form field data from a JSON file.
|
||||
func LoadFromJSONFile (filePath string )(*FieldData ,error ){_bc ,_f :=_a .Open (filePath );if _f !=nil {return nil ,_f ;};defer _bc .Close ();return LoadFromJSON (_bc );};
|
||||
|
||||
// LoadFromJSON loads JSON form data from `r`.
|
||||
func LoadFromJSON (r _d .Reader )(*FieldData ,error ){var _g FieldData ;_dd :=_bd .NewDecoder (r ).Decode (&_g ._ef );if _dd !=nil {return nil ,_dd ;};return &_g ,nil ;};
|
||||
|
||||
// LoadFromPDFFile loads form field data from a PDF file.
|
||||
func LoadFromPDFFile (filePath string )(*FieldData ,error ){_fgg ,_gde :=_a .Open (filePath );if _gde !=nil {return nil ,_gde ;};defer _fgg .Close ();return LoadFromPDF (_fgg );};
|
||||
|
||||
// FieldData represents form field data loaded from JSON file.
|
||||
type FieldData struct{_ef []fieldValue };
|
||||
|
||||
// LoadFromPDF loads form field data from a PDF.
|
||||
func LoadFromPDF (rs _d .ReadSeeker )(*FieldData ,error ){_ac ,_c :=_e .NewPdfReader (rs );if _c !=nil {return nil ,_c ;};if _ac .AcroForm ==nil {return nil ,nil ;};var _da []fieldValue ;_ge :=_ac .AcroForm .AllFields ();for _ ,_ad :=range _ge {var _dfd []string ;_gg :=make (map[string ]struct{});_dda ,_eff :=_ad .FullName ();if _eff !=nil {return nil ,_eff ;};if _bg ,_gb :=_ad .V .(*_db .PdfObjectString );_gb {_da =append (_da ,fieldValue {Name :_dda ,Value :_bg .Decoded ()});continue ;};var _ggd string ;for _ ,_de :=range _ad .Annotations {_cc ,_eg :=_db .GetName (_de .AS );if _eg {_ggd =_cc .String ();};_bgb ,_cb :=_db .GetDict (_de .AP );if !_cb {continue ;};_ddd ,_ :=_db .GetDict (_bgb .Get ("\u004e"));for _ ,_egd :=range _ddd .Keys (){_ff :=_egd .String ();if _ ,_ea :=_gg [_ff ];!_ea {_dfd =append (_dfd ,_ff );_gg [_ff ]=struct{}{};};};_gd ,_ :=_db .GetDict (_bgb .Get ("\u0044"));for _ ,_ce :=range _gd .Keys (){_fac :=_ce .String ();if _ ,_cab :=_gg [_fac ];!_cab {_dfd =append (_dfd ,_fac );_gg [_fac ]=struct{}{};};};};_acf :=fieldValue {Name :_dda ,Value :_ggd ,Options :_dfd };_da =append (_da ,_acf );};_ddg :=FieldData {_ef :_da };return &_ddg ,nil ;};type fieldValue struct{Name string `json:"name"`;Value string `json:"value"`;
|
||||
|
||||
// Options lists allowed values if present.
|
||||
Options []string `json:"options,omitempty"`;};
|
||||
|
||||
// LoadFromPDF loads form field data from a PDF.
|
||||
func LoadFromPDF (rs _fd .ReadSeeker )(*FieldData ,error ){_c ,_cc :=_ea .NewPdfReader (rs );if _cc !=nil {return nil ,_cc ;};if _c .AcroForm ==nil {return nil ,nil ;};var _fda []fieldValue ;_gb :=_c .AcroForm .AllFields ();for _ ,_bd :=range _gb {var _ab []string ;_gae :=make (map[string ]struct{});_db ,_cg :=_bd .FullName ();if _cg !=nil {return nil ,_cg ;};if _bg ,_fg :=_bd .V .(*_e .PdfObjectString );_fg {_fda =append (_fda ,fieldValue {Name :_db ,Value :_bg .Decoded ()});continue ;};var _bb string ;for _ ,_ead :=range _bd .Annotations {_ad ,_dc :=_e .GetName (_ead .AS );if _dc {_bb =_ad .String ();};_cd ,_ee :=_e .GetDict (_ead .AP );if !_ee {continue ;};_ca ,_ :=_e .GetDict (_cd .Get ("\u004e"));for _ ,_ef :=range _ca .Keys (){_efg :=_ef .String ();if _ ,_dbg :=_gae [_efg ];!_dbg {_ab =append (_ab ,_efg );_gae [_efg ]=struct{}{};};};_ae ,_ :=_e .GetDict (_cd .Get ("\u0044"));for _ ,_efb :=range _ae .Keys (){_ba :=_efb .String ();if _ ,_bf :=_gae [_ba ];!_bf {_ab =append (_ab ,_ba );_gae [_ba ]=struct{}{};};};};_ge :=fieldValue {Name :_db ,Value :_bb ,Options :_ab };_fda =append (_fda ,_ge );};_eaf :=FieldData {_fb :_fda };return &_eaf ,nil ;};
|
||||
|
||||
// LoadFromJSONFile loads form field data from a JSON file.
|
||||
func LoadFromJSONFile (filePath string )(*FieldData ,error ){_a ,_ga :=_f .Open (filePath );if _ga !=nil {return nil ,_ga ;};defer _a .Close ();return LoadFromJSON (_a );};
|
||||
|
||||
// FieldValues implements model.FieldValueProvider interface.
|
||||
func (_bfd *FieldData )FieldValues ()(map[string ]_e .PdfObject ,error ){_gc :=make (map[string ]_e .PdfObject );for _ ,_af :=range _bfd ._fb {if len (_af .Value )> 0{_gc [_af .Name ]=_e .MakeString (_af .Value );};};return _gc ,nil ;};
|
||||
|
||||
// JSON returns the field data as a string in JSON format.
|
||||
func (_bddc FieldData )JSON ()(string ,error ){_geb ,_bfe :=_g .MarshalIndent (_bddc ._fb ,"","\u0020\u0020\u0020\u0020");return string (_geb ),_bfe ;};
|
||||
|
||||
// LoadFromJSON loads JSON form data from `r`.
|
||||
func LoadFromJSON (r _fd .Reader )(*FieldData ,error ){var _d FieldData ;_eg :=_g .NewDecoder (r ).Decode (&_d ._fb );if _eg !=nil {return nil ,_eg ;};return &_d ,nil ;};
|
||||
|
||||
// LoadFromPDFFile loads form field data from a PDF file.
|
||||
func LoadFromPDFFile (filePath string )(*FieldData ,error ){_fc ,_bfb :=_f .Open (filePath );if _bfb !=nil {return nil ,_bfb ;};defer _fc .Close ();return LoadFromPDF (_fc );};
|
||||
|
||||
// FieldData represents form field data loaded from JSON file.
|
||||
type FieldData struct{_fb []fieldValue };
|
||||
func (_gdg FieldData )JSON ()(string ,error ){_adf ,_bcad :=_bd .MarshalIndent (_gdg ._ef ,"","\u0020\u0020\u0020\u0020");return string (_adf ),_bcad ;};
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|
||||
// Use of this source code is governed by the UniDoc End User License Agreement
|
||||
// terms that can be accessed at https://unidoc.io/eula/
|
||||
|
||||
package endian ;import (_a "encoding/binary";_da "unsafe";);var (ByteOrder _a .ByteOrder ;_e bool ;);func init (){const _b =int (_da .Sizeof (0));_dg :=1;_bd :=(*[_b ]byte )(_da .Pointer (&_dg ));if _bd [0]==0{_e =true ;ByteOrder =_a .BigEndian ;}else {ByteOrder =_a .LittleEndian ;};};func IsLittle ()bool {return !_e };func IsBig ()bool {return _e };
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||||
package endian ;import (_c "encoding/binary";_d "unsafe";);func IsBig ()bool {return _a };func init (){const _ec =int (_d .Sizeof (0));_eb :=1;_b :=(*[_ec ]byte )(_d .Pointer (&_eb ));if _b [0]==0{_a =true ;ByteOrder =_c .BigEndian ;}else {ByteOrder =_c .LittleEndian ;};};var (ByteOrder _c .ByteOrder ;_a bool ;);func IsLittle ()bool {return !_a };
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|
||||
// Use of this source code is governed by the UniDoc End User License Agreement
|
||||
// terms that can be accessed at https://unidoc.io/eula/
|
||||
|
||||
package basic ;import _g "github.com/unidoc/unipdf/v3/internal/jbig2/errors";func (_d IntsMap )Add (key uint64 ,value int ){_d [key ]=append (_d [key ],value )};func (_gf *NumSlice )Add (v float32 ){*_gf =append (*_gf ,v )};func (_ca IntsMap )GetSlice (key uint64 )([]int ,bool ){_gb ,_e :=_ca [key ];if !_e {return nil ,false ;};return _gb ,true ;};func NewIntSlice (i int )*IntSlice {_dc :=IntSlice (make ([]int ,i ));return &_dc };func (_fd IntsMap )Delete (key uint64 ){delete (_fd ,key )};func (_a *IntSlice )Add (v int )error {if _a ==nil {return _g .Error ("\u0049\u006e\u0074S\u006c\u0069\u0063\u0065\u002e\u0041\u0064\u0064","\u0073\u006c\u0069\u0063\u0065\u0020\u006e\u006f\u0074\u0020\u0064\u0065f\u0069\u006e\u0065\u0064");};*_a =append (*_a ,v );return nil ;};type IntsMap map[uint64 ][]int ;func NewNumSlice (i int )*NumSlice {_ef :=NumSlice (make ([]float32 ,i ));return &_ef };func (_cb *Stack )Len ()int {return len (_cb .Data )};func (_fde NumSlice )Get (i int )(float32 ,error ){if i < 0||i > len (_fde )-1{return 0,_g .Errorf ("\u004e\u0075\u006dS\u006c\u0069\u0063\u0065\u002e\u0047\u0065\u0074","\u0069n\u0064\u0065\u0078\u003a\u0020\u0027\u0025\u0064\u0027\u0020\u006fu\u0074\u0020\u006f\u0066\u0020\u0072\u0061\u006e\u0067\u0065",i );};return _fde [i ],nil ;};func Ceil (numerator ,denominator int )int {if numerator %denominator ==0{return numerator /denominator ;};return (numerator /denominator )+1;};type NumSlice []float32 ;func (_ad *Stack )Peek ()(_gde interface{},_ee bool ){return _ad .peek ()};func (_ce IntSlice )Size ()int {return len (_ce )};func (_efb *Stack )top ()int {return len (_efb .Data )-1};type IntSlice []int ;func (_aa *IntSlice )Copy ()*IntSlice {_ab :=IntSlice (make ([]int ,len (*_aa )));copy (_ab ,*_aa );return &_ab ;};func Sign (v float32 )float32 {if v >=0.0{return 1.0;};return -1.0;};func Max (x ,y int )int {if x > y {return x ;};return y ;};func (_dg IntsMap )Get (key uint64 )(int ,bool ){_de ,_f :=_dg [key ];if !_f {return 0,false ;};if len (_de )==0{return 0,false ;};return _de [0],true ;};func (_dd IntSlice )Get (index int )(int ,error ){if index > len (_dd )-1{return 0,_g .Errorf ("\u0049\u006e\u0074S\u006c\u0069\u0063\u0065\u002e\u0047\u0065\u0074","\u0069\u006e\u0064\u0065x:\u0020\u0025\u0064\u0020\u006f\u0075\u0074\u0020\u006f\u0066\u0020\u0072\u0061\u006eg\u0065",index );};return _dd [index ],nil ;};func (_gcb *Stack )Push (v interface{}){_gcb .Data =append (_gcb .Data ,v )};func Abs (v int )int {if v > 0{return v ;};return -v ;};func (_efa *NumSlice )AddInt (v int ){*_efa =append (*_efa ,float32 (v ))};type Stack struct{Data []interface{};Aux *Stack ;};func Min (x ,y int )int {if x < y {return x ;};return y ;};func (_ae NumSlice )GetIntSlice ()[]int {_cc :=make ([]int ,len (_ae ));for _ge ,_gc :=range _ae {_cc [_ge ]=int (_gc );};return _cc ;};func (_gbf *Stack )Pop ()(_gcg interface{},_dge bool ){_gcg ,_dge =_gbf .peek ();if !_dge {return nil ,_dge ;};_gbf .Data =_gbf .Data [:_gbf .top ()];return _gcg ,true ;};func (_dcd NumSlice )GetInt (i int )(int ,error ){const _gd ="\u0047\u0065\u0074\u0049\u006e\u0074";if i < 0||i > len (_dcd )-1{return 0,_g .Errorf (_gd ,"\u0069n\u0064\u0065\u0078\u003a\u0020\u0027\u0025\u0064\u0027\u0020\u006fu\u0074\u0020\u006f\u0066\u0020\u0072\u0061\u006e\u0067\u0065",i );};_fg :=_dcd [i ];return int (_fg +Sign (_fg )*0.5),nil ;};func (_fe *Stack )peek ()(interface{},bool ){_dda :=_fe .top ();if _dda ==-1{return nil ,false ;};return _fe .Data [_dda ],true ;};
|
||||
package basic ;import _c "github.com/unidoc/unipdf/v3/internal/jbig2/errors";func Ceil (numerator ,denominator int )int {if numerator %denominator ==0{return numerator /denominator ;};return (numerator /denominator )+1;};func (_fbd *Stack )Pop ()(_bg interface{},_bag bool ){_bg ,_bag =_fbd .peek ();if !_bag {return nil ,_bag ;};_fbd .Data =_fbd .Data [:_fbd .top ()];return _bg ,true ;};func (_be *Stack )Len ()int {return len (_be .Data )};func NewNumSlice (i int )*NumSlice {_efc :=NumSlice (make ([]float32 ,i ));return &_efc };func (_bc *IntSlice )Add (v int )error {if _bc ==nil {return _c .Error ("\u0049\u006e\u0074S\u006c\u0069\u0063\u0065\u002e\u0041\u0064\u0064","\u0073\u006c\u0069\u0063\u0065\u0020\u006e\u006f\u0074\u0020\u0064\u0065f\u0069\u006e\u0065\u0064");};*_bc =append (*_bc ,v );return nil ;};func (_fb IntsMap )Delete (key uint64 ){delete (_fb ,key )};type IntSlice []int ;func (_b IntsMap )GetSlice (key uint64 )([]int ,bool ){_ac ,_g :=_b [key ];if !_g {return nil ,false ;};return _ac ,true ;};func Max (x ,y int )int {if x > y {return x ;};return y ;};func Sign (v float32 )float32 {if v >=0.0{return 1.0;};return -1.0;};func (_d IntSlice )Get (index int )(int ,error ){if index > len (_d )-1{return 0,_c .Errorf ("\u0049\u006e\u0074S\u006c\u0069\u0063\u0065\u002e\u0047\u0065\u0074","\u0069\u006e\u0064\u0065x:\u0020\u0025\u0064\u0020\u006f\u0075\u0074\u0020\u006f\u0066\u0020\u0072\u0061\u006eg\u0065",index );};return _d [index ],nil ;};type Stack struct{Data []interface{};Aux *Stack ;};func (_bb *NumSlice )AddInt (v int ){*_bb =append (*_bb ,float32 (v ))};func Abs (v int )int {if v > 0{return v ;};return -v ;};func (_a IntsMap )Get (key uint64 )(int ,bool ){_ad ,_f :=_a [key ];if !_f {return 0,false ;};if len (_ad )==0{return 0,false ;};return _ad [0],true ;};type NumSlice []float32 ;func (_adb *Stack )top ()int {return len (_adb .Data )-1};func (_bcc NumSlice )GetInt (i int )(int ,error ){const _ag ="\u0047\u0065\u0074\u0049\u006e\u0074";if i < 0||i > len (_bcc )-1{return 0,_c .Errorf (_ag ,"\u0069n\u0064\u0065\u0078\u003a\u0020\u0027\u0025\u0064\u0027\u0020\u006fu\u0074\u0020\u006f\u0066\u0020\u0072\u0061\u006e\u0067\u0065",i );};_cc :=_bcc [i ];return int (_cc +Sign (_cc )*0.5),nil ;};func Min (x ,y int )int {if x < y {return x ;};return y ;};func (_fg *Stack )Peek ()(_bd interface{},_da bool ){return _fg .peek ()};func (_ga NumSlice )Get (i int )(float32 ,error ){if i < 0||i > len (_ga )-1{return 0,_c .Errorf ("\u004e\u0075\u006dS\u006c\u0069\u0063\u0065\u002e\u0047\u0065\u0074","\u0069n\u0064\u0065\u0078\u003a\u0020\u0027\u0025\u0064\u0027\u0020\u006fu\u0074\u0020\u006f\u0066\u0020\u0072\u0061\u006e\u0067\u0065",i );};return _ga [i ],nil ;};func (_fa *Stack )Push (v interface{}){_fa .Data =append (_fa .Data ,v )};func NewIntSlice (i int )*IntSlice {_efb :=IntSlice (make ([]int ,i ));return &_efb };func (_gf *IntSlice )Copy ()*IntSlice {_eb :=IntSlice (make ([]int ,len (*_gf )));copy (_eb ,*_gf );return &_eb ;};func (_faf *Stack )peek ()(interface{},bool ){_fgc :=_faf .top ();if _fgc ==-1{return nil ,false ;};return _faf .Data [_fgc ],true ;};func (_agf NumSlice )GetIntSlice ()[]int {_ca :=make ([]int ,len (_agf ));for _dc ,_ba :=range _agf {_ca [_dc ]=int (_ba );};return _ca ;};type IntsMap map[uint64 ][]int ;func (_gc IntSlice )Size ()int {return len (_gc )};func (_ef IntsMap )Add (key uint64 ,value int ){_ef [key ]=append (_ef [key ],value )};func (_aa *NumSlice )Add (v float32 ){*_aa =append (*_aa ,v )};
|
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|
||||
// Use of this source code is governed by the UniDoc End User License Agreement
|
||||
// terms that can be accessed at https://unidoc.io/eula/
|
||||
|
||||
package decoder ;import (_a "github.com/unidoc/unipdf/v3/internal/bitwise";_ac "github.com/unidoc/unipdf/v3/internal/jbig2/bitmap";_f "github.com/unidoc/unipdf/v3/internal/jbig2/document";_c "github.com/unidoc/unipdf/v3/internal/jbig2/errors";_g "image";);func (_bd *Decoder )DecodePageImage (pageNumber int )(_g .Image ,error ){const _de ="\u0064\u0065\u0063od\u0065\u0072\u002e\u0044\u0065\u0063\u006f\u0064\u0065\u0050\u0061\u0067\u0065\u0049\u006d\u0061\u0067\u0065";_bf ,_fg :=_bd .decodePageImage (pageNumber );if _fg !=nil {return nil ,_c .Wrap (_fg ,_de ,"");};return _bf ,nil ;};type Decoder struct{_b _a .StreamReader ;_gb *_f .Document ;_e int ;_ag Parameters ;};func (_aa *Decoder )DecodeNextPage ()([]byte ,error ){_aa ._e ++;_fb :=_aa ._e ;return _aa .decodePage (_fb );};type Parameters struct{UnpaddedData bool ;Color _ac .Color ;};func (_eg *Decoder )DecodePage (pageNumber int )([]byte ,error ){return _eg .decodePage (pageNumber )};func (_af *Decoder )decodePageImage (_abf int )(_g .Image ,error ){const _egb ="\u0064e\u0063o\u0064\u0065\u0050\u0061\u0067\u0065\u0049\u006d\u0061\u0067\u0065";if _abf < 0{return nil ,_c .Errorf (_egb ,"\u0069n\u0076\u0061\u006c\u0069d\u0020\u0070\u0061\u0067\u0065 \u006eu\u006db\u0065\u0072\u003a\u0020\u0027\u0025\u0064'",_abf );};if _abf > int (_af ._gb .NumberOfPages ){return nil ,_c .Errorf (_egb ,"p\u0061\u0067\u0065\u003a\u0020\u0027%\u0064\u0027\u0020\u006e\u006f\u0074 \u0066\u006f\u0075\u006e\u0064\u0020\u0069n\u0020\u0074\u0068\u0065\u0020\u0064\u0065\u0063\u006f\u0064e\u0072",_abf );};_ce ,_dg :=_af ._gb .GetPage (_abf );if _dg !=nil {return nil ,_c .Wrap (_dg ,_egb ,"");};_gbe ,_dg :=_ce .GetBitmap ();if _dg !=nil {return nil ,_c .Wrap (_dg ,_egb ,"");};return _gbe .ToImage (),nil ;};func (_bb *Decoder )decodePage (_bc int )([]byte ,error ){const _ec ="\u0064\u0065\u0063\u006f\u0064\u0065\u0050\u0061\u0067\u0065";if _bc < 0{return nil ,_c .Errorf (_ec ,"\u0069n\u0076\u0061\u006c\u0069d\u0020\u0070\u0061\u0067\u0065 \u006eu\u006db\u0065\u0072\u003a\u0020\u0027\u0025\u0064'",_bc );};if _bc > int (_bb ._gb .NumberOfPages ){return nil ,_c .Errorf (_ec ,"p\u0061\u0067\u0065\u003a\u0020\u0027%\u0064\u0027\u0020\u006e\u006f\u0074 \u0066\u006f\u0075\u006e\u0064\u0020\u0069n\u0020\u0074\u0068\u0065\u0020\u0064\u0065\u0063\u006f\u0064e\u0072",_bc );};_bbg ,_fgc :=_bb ._gb .GetPage (_bc );if _fgc !=nil {return nil ,_c .Wrap (_fgc ,_ec ,"");};_abc ,_fgc :=_bbg .GetBitmap ();if _fgc !=nil {return nil ,_c .Wrap (_fgc ,_ec ,"");};_abc .InverseData ();if !_bb ._ag .UnpaddedData {return _abc .Data ,nil ;};return _abc .GetUnpaddedData ();};func Decode (input []byte ,parameters Parameters ,globals *_f .Globals )(*Decoder ,error ){_gd :=_a .NewReader (input );_ge ,_fe :=_f .DecodeDocument (_gd ,globals );if _fe !=nil {return nil ,_fe ;};return &Decoder {_b :_gd ,_gb :_ge ,_ag :parameters },nil ;};func (_ab *Decoder )PageNumber ()(int ,error ){const _fd ="\u0044e\u0063o\u0064\u0065\u0072\u002e\u0050a\u0067\u0065N\u0075\u006d\u0062\u0065\u0072";if _ab ._gb ==nil {return 0,_c .Error (_fd ,"d\u0065\u0063\u006f\u0064\u0065\u0072 \u006e\u006f\u0074\u0020\u0069\u006e\u0069\u0074\u0069a\u006c\u0069\u007ae\u0064 \u0079\u0065\u0074");};return int (_ab ._gb .NumberOfPages ),nil ;};
|
||||
package decoder ;import (_g "github.com/unidoc/unipdf/v3/internal/bitwise";_bb "github.com/unidoc/unipdf/v3/internal/jbig2/bitmap";_ae "github.com/unidoc/unipdf/v3/internal/jbig2/document";_bf "github.com/unidoc/unipdf/v3/internal/jbig2/errors";_b "image";);type Decoder struct{_ag _g .StreamReader ;_aeg *_ae .Document ;_aa int ;_e Parameters ;};func (_be *Decoder )DecodePage (pageNumber int )([]byte ,error ){return _be .decodePage (pageNumber )};func (_dg *Decoder )decodePageImage (_aacc int )(_b .Image ,error ){const _gf ="\u0064e\u0063o\u0064\u0065\u0050\u0061\u0067\u0065\u0049\u006d\u0061\u0067\u0065";if _aacc < 0{return nil ,_bf .Errorf (_gf ,"\u0069n\u0076\u0061\u006c\u0069d\u0020\u0070\u0061\u0067\u0065 \u006eu\u006db\u0065\u0072\u003a\u0020\u0027\u0025\u0064'",_aacc );};if _aacc > int (_dg ._aeg .NumberOfPages ){return nil ,_bf .Errorf (_gf ,"p\u0061\u0067\u0065\u003a\u0020\u0027%\u0064\u0027\u0020\u006e\u006f\u0074 \u0066\u006f\u0075\u006e\u0064\u0020\u0069n\u0020\u0074\u0068\u0065\u0020\u0064\u0065\u0063\u006f\u0064e\u0072",_aacc );};_ba ,_bba :=_dg ._aeg .GetPage (_aacc );if _bba !=nil {return nil ,_bf .Wrap (_bba ,_gf ,"");};_fg ,_bba :=_ba .GetBitmap ();if _bba !=nil {return nil ,_bf .Wrap (_bba ,_gf ,"");};return _fg .ToImage (),nil ;};type Parameters struct{UnpaddedData bool ;Color _bb .Color ;};func (_bfb *Decoder )PageNumber ()(int ,error ){const _dc ="\u0044e\u0063o\u0064\u0065\u0072\u002e\u0050a\u0067\u0065N\u0075\u006d\u0062\u0065\u0072";if _bfb ._aeg ==nil {return 0,_bf .Error (_dc ,"d\u0065\u0063\u006f\u0064\u0065\u0072 \u006e\u006f\u0074\u0020\u0069\u006e\u0069\u0074\u0069a\u006c\u0069\u007ae\u0064 \u0079\u0065\u0074");};return int (_bfb ._aeg .NumberOfPages ),nil ;};func (_aac *Decoder )DecodePageImage (pageNumber int )(_b .Image ,error ){const _f ="\u0064\u0065\u0063od\u0065\u0072\u002e\u0044\u0065\u0063\u006f\u0064\u0065\u0050\u0061\u0067\u0065\u0049\u006d\u0061\u0067\u0065";_bea ,_gc :=_aac .decodePageImage (pageNumber );if _gc !=nil {return nil ,_bf .Wrap (_gc ,_f ,"");};return _bea ,nil ;};func Decode (input []byte ,parameters Parameters ,globals *_ae .Globals )(*Decoder ,error ){_bfbb :=_g .NewReader (input );_ef ,_ac :=_ae .DecodeDocument (_bfbb ,globals );if _ac !=nil {return nil ,_ac ;};return &Decoder {_ag :_bfbb ,_aeg :_ef ,_e :parameters },nil ;};func (_d *Decoder )DecodeNextPage ()([]byte ,error ){_d ._aa ++;_c :=_d ._aa ;return _d .decodePage (_c )};func (_aga *Decoder )decodePage (_beb int )([]byte ,error ){const _de ="\u0064\u0065\u0063\u006f\u0064\u0065\u0050\u0061\u0067\u0065";if _beb < 0{return nil ,_bf .Errorf (_de ,"\u0069n\u0076\u0061\u006c\u0069d\u0020\u0070\u0061\u0067\u0065 \u006eu\u006db\u0065\u0072\u003a\u0020\u0027\u0025\u0064'",_beb );};if _beb > int (_aga ._aeg .NumberOfPages ){return nil ,_bf .Errorf (_de ,"p\u0061\u0067\u0065\u003a\u0020\u0027%\u0064\u0027\u0020\u006e\u006f\u0074 \u0066\u006f\u0075\u006e\u0064\u0020\u0069n\u0020\u0074\u0068\u0065\u0020\u0064\u0065\u0063\u006f\u0064e\u0072",_beb );};_cg ,_fa :=_aga ._aeg .GetPage (_beb );if _fa !=nil {return nil ,_bf .Wrap (_fa ,_de ,"");};_cgd ,_fa :=_cg .GetBitmap ();if _fa !=nil {return nil ,_bf .Wrap (_fa ,_de ,"");};_cgd .InverseData ();if !_aga ._e .UnpaddedData {return _cgd .Data ,nil ;};return _cgd .GetUnpaddedData ();};
|
||||
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|
||||
// Use of this source code is governed by the UniDoc End User License Agreement
|
||||
// terms that can be accessed at https://unidoc.io/eula/
|
||||
|
||||
package errors ;import _a "fmt";func Error (processName ,message string )error {return _cc (message ,processName )};func Wrapf (err error ,processName ,message string ,arguments ...interface{})error {if _cg ,_eb :=err .(*processError );_eb {_cg ._af ="";};_d :=_cc (_a .Sprintf (message ,arguments ...),processName );_d ._b =err ;return _d ;};type processError struct{_af string ;_c string ;_e string ;_b error ;};func Wrap (err error ,processName ,message string )error {if _ea ,_ef :=err .(*processError );_ef {_ea ._af ="";};_afc :=_cc (message ,processName );_afc ._b =err ;return _afc ;};func (_ae *processError )Error ()string {var _g string ;if _ae ._af !=""{_g =_ae ._af ;};_g +="\u0050r\u006f\u0063\u0065\u0073\u0073\u003a "+_ae ._c ;if _ae ._e !=""{_g +="\u0020\u004d\u0065\u0073\u0073\u0061\u0067\u0065\u003a\u0020"+_ae ._e ;};if _ae ._b !=nil {_g +="\u002e\u0020"+_ae ._b .Error ();};return _g ;};func Errorf (processName ,message string ,arguments ...interface{})error {return _cc (_a .Sprintf (message ,arguments ...),processName );};func _cc (_ff ,_cd string )*processError {return &processError {_af :"\u005b\u0055\u006e\u0069\u0050\u0044\u0046\u005d",_e :_ff ,_c :_cd };};
|
||||
package errors ;import _g "fmt";func Errorf (processName ,message string ,arguments ...interface{})error {return _ab (_g .Sprintf (message ,arguments ...),processName );};type processError struct{_d string ;_bf string ;_a string ;_c error ;};func Wrap (err error ,processName ,message string )error {if _ef ,_adb :=err .(*processError );_adb {_ef ._d ="";};_f :=_ab (message ,processName );_f ._c =err ;return _f ;};func (_cg *processError )Error ()string {var _da string ;if _cg ._d !=""{_da =_cg ._d ;};_da +="\u0050r\u006f\u0063\u0065\u0073\u0073\u003a "+_cg ._bf ;if _cg ._a !=""{_da +="\u0020\u004d\u0065\u0073\u0073\u0061\u0067\u0065\u003a\u0020"+_cg ._a ;};if _cg ._c !=nil {_da +="\u002e\u0020"+_cg ._c .Error ();};return _da ;};func Error (processName ,message string )error {return _ab (message ,processName )};func Wrapf (err error ,processName ,message string ,arguments ...interface{})error {if _dg ,_ea :=err .(*processError );_ea {_dg ._d ="";};_db :=_ab (_g .Sprintf (message ,arguments ...),processName );_db ._c =err ;return _db ;};func _ab (_e ,_ad string )*processError {return &processError {_d :"\u005b\u0055\u006e\u0069\u0050\u0044\u0046\u005d",_a :_e ,_bf :_ad };};
|
||||
@ -9,4 +9,4 @@
|
||||
// Use of this source code is governed by the UniDoc End User License Agreement
|
||||
// terms that can be accessed at https://unidoc.io/eula/
|
||||
|
||||
package jbig2 ;import (_c "github.com/unidoc/unipdf/v3/internal/bitwise";_g "github.com/unidoc/unipdf/v3/internal/jbig2/decoder";_f "github.com/unidoc/unipdf/v3/internal/jbig2/document";_d "github.com/unidoc/unipdf/v3/internal/jbig2/document/segments";_ca "github.com/unidoc/unipdf/v3/internal/jbig2/errors";_ac "sort";);func DecodeBytes (encoded []byte ,parameters _g .Parameters ,globals ...Globals )([]byte ,error ){var _b Globals ;if len (globals )> 0{_b =globals [0];};_cad ,_bb :=_g .Decode (encoded ,parameters ,_b .ToDocumentGlobals ());if _bb !=nil {return nil ,_bb ;};return _cad .DecodeNextPage ();};type Globals map[int ]*_d .Header ;func (_gdc Globals )ToDocumentGlobals ()*_f .Globals {if _gdc ==nil {return nil ;};_cf :=[]*_d .Header {};for _ ,_gb :=range _gdc {_cf =append (_cf ,_gb );};_ac .Slice (_cf ,func (_cg ,_bbb int )bool {return _cf [_cg ].SegmentNumber < _cf [_bbb ].SegmentNumber });return &_f .Globals {Segments :_cf };};func DecodeGlobals (encoded []byte )(Globals ,error ){const _fa ="\u0044\u0065\u0063\u006f\u0064\u0065\u0047\u006c\u006f\u0062\u0061\u006c\u0073";_af :=_c .NewReader (encoded );_gg ,_gd :=_f .DecodeDocument (_af ,nil );if _gd !=nil {return nil ,_ca .Wrap (_gd ,_fa ,"");};if _gg .GlobalSegments ==nil ||(_gg .GlobalSegments .Segments ==nil ){return nil ,_ca .Error (_fa ,"\u006eo\u0020\u0067\u006c\u006f\u0062\u0061\u006c\u0020\u0073\u0065\u0067m\u0065\u006e\u0074\u0073\u0020\u0066\u006f\u0075\u006e\u0064");};_ad :=Globals {};for _ ,_bc :=range _gg .GlobalSegments .Segments {_ad [int (_bc .SegmentNumber )]=_bc ;};return _ad ,nil ;};
|
||||
package jbig2 ;import (_e "github.com/unidoc/unipdf/v3/internal/bitwise";_d "github.com/unidoc/unipdf/v3/internal/jbig2/decoder";_bae "github.com/unidoc/unipdf/v3/internal/jbig2/document";_g "github.com/unidoc/unipdf/v3/internal/jbig2/document/segments";_bg "github.com/unidoc/unipdf/v3/internal/jbig2/errors";_ba "sort";);func DecodeGlobals (encoded []byte )(Globals ,error ){const _c ="\u0044\u0065\u0063\u006f\u0064\u0065\u0047\u006c\u006f\u0062\u0061\u006c\u0073";_be :=_e .NewReader (encoded );_dc ,_ce :=_bae .DecodeDocument (_be ,nil );if _ce !=nil {return nil ,_bg .Wrap (_ce ,_c ,"");};if _dc .GlobalSegments ==nil ||(_dc .GlobalSegments .Segments ==nil ){return nil ,_bg .Error (_c ,"\u006eo\u0020\u0067\u006c\u006f\u0062\u0061\u006c\u0020\u0073\u0065\u0067m\u0065\u006e\u0074\u0073\u0020\u0066\u006f\u0075\u006e\u0064");};_gf :=Globals {};for _ ,_cg :=range _dc .GlobalSegments .Segments {_gf [int (_cg .SegmentNumber )]=_cg ;};return _gf ,nil ;};func (_efd Globals )ToDocumentGlobals ()*_bae .Globals {if _efd ==nil {return nil ;};_f :=[]*_g .Header {};for _ ,_a :=range _efd {_f =append (_f ,_a );};_ba .Slice (_f ,func (_fe ,_ac int )bool {return _f [_fe ].SegmentNumber < _f [_ac ].SegmentNumber });return &_bae .Globals {Segments :_f };};type Globals map[int ]*_g .Header ;func DecodeBytes (encoded []byte ,parameters _d .Parameters ,globals ...Globals )([]byte ,error ){var _bab Globals ;if len (globals )> 0{_bab =globals [0];};_eg ,_ef :=_d .Decode (encoded ,parameters ,_bab .ToDocumentGlobals ());if _ef !=nil {return nil ,_ef ;};return _eg .DecodeNextPage ();};
|
||||
@ -9,4 +9,4 @@
|
||||
// Use of this source code is governed by the UniDoc End User License Agreement
|
||||
// terms that can be accessed at https://unidoc.io/eula/
|
||||
|
||||
package sampling ;import (_a "github.com/unidoc/unipdf/v3/internal/bitwise";_g "github.com/unidoc/unipdf/v3/internal/imageutil";_e "io";);func (_eg *Reader )ReadSamples (samples []uint32 )(_fd error ){for _c :=0;_c < len (samples );_c ++{samples [_c ],_fd =_eg .ReadSample ();if _fd !=nil {return _fd ;};};return nil ;};func ResampleBytes (data []byte ,bitsPerSample int )[]uint32 {var _ff []uint32 ;_ab :=bitsPerSample ;var _ef uint32 ;var _ggd byte ;_bd :=0;_bf :=0;_ed :=0;for _ed < len (data ){if _bd > 0{_aff :=_bd ;if _ab < _aff {_aff =_ab ;};_ef =(_ef <<uint (_aff ))|uint32 (_ggd >>uint (8-_aff ));_bd -=_aff ;if _bd > 0{_ggd =_ggd <<uint (_aff );}else {_ggd =0;};_ab -=_aff ;if _ab ==0{_ff =append (_ff ,_ef );_ab =bitsPerSample ;_ef =0;_bf ++;};}else {_bb :=data [_ed ];_ed ++;_fef :=8;if _ab < _fef {_fef =_ab ;};_bd =8-_fef ;_ef =(_ef <<uint (_fef ))|uint32 (_bb >>uint (_bd ));if _fef < 8{_ggd =_bb <<uint (_fef );};_ab -=_fef ;if _ab ==0{_ff =append (_ff ,_ef );_ab =bitsPerSample ;_ef =0;_bf ++;};};};for _bd >=bitsPerSample {_ce :=_bd ;if _ab < _ce {_ce =_ab ;};_ef =(_ef <<uint (_ce ))|uint32 (_ggd >>uint (8-_ce ));_bd -=_ce ;if _bd > 0{_ggd =_ggd <<uint (_ce );}else {_ggd =0;};_ab -=_ce ;if _ab ==0{_ff =append (_ff ,_ef );_ab =bitsPerSample ;_ef =0;_bf ++;};};return _ff ;};type SampleReader interface{ReadSample ()(uint32 ,error );ReadSamples (_ea []uint32 )error ;};func ResampleUint32 (data []uint32 ,bitsPerInputSample int ,bitsPerOutputSample int )[]uint32 {var _dd []uint32 ;_efe :=bitsPerOutputSample ;var _gd uint32 ;var _ca uint32 ;_ag :=0;_ae :=0;_db :=0;for _db < len (data ){if _ag > 0{_ege :=_ag ;if _efe < _ege {_ege =_efe ;};_gd =(_gd <<uint (_ege ))|uint32 (_ca >>uint (bitsPerInputSample -_ege ));_ag -=_ege ;if _ag > 0{_ca =_ca <<uint (_ege );}else {_ca =0;};_efe -=_ege ;if _efe ==0{_dd =append (_dd ,_gd );_efe =bitsPerOutputSample ;_gd =0;_ae ++;};}else {_dg :=data [_db ];_db ++;_bbe :=bitsPerInputSample ;if _efe < _bbe {_bbe =_efe ;};_ag =bitsPerInputSample -_bbe ;_gd =(_gd <<uint (_bbe ))|uint32 (_dg >>uint (_ag ));if _bbe < bitsPerInputSample {_ca =_dg <<uint (_bbe );};_efe -=_bbe ;if _efe ==0{_dd =append (_dd ,_gd );_efe =bitsPerOutputSample ;_gd =0;_ae ++;};};};for _ag >=bitsPerOutputSample {_eac :=_ag ;if _efe < _eac {_eac =_efe ;};_gd =(_gd <<uint (_eac ))|uint32 (_ca >>uint (bitsPerInputSample -_eac ));_ag -=_eac ;if _ag > 0{_ca =_ca <<uint (_eac );}else {_ca =0;};_efe -=_eac ;if _efe ==0{_dd =append (_dd ,_gd );_efe =bitsPerOutputSample ;_gd =0;_ae ++;};};if _efe > 0&&_efe < bitsPerOutputSample {_gd <<=uint (_efe );_dd =append (_dd ,_gd );};return _dd ;};func (_bbb *Writer )WriteSample (sample uint32 )error {if _ ,_geg :=_bbb ._cc .WriteBits (uint64 (sample ),_bbb ._afb .BitsPerComponent );_geg !=nil {return _geg ;};_bbb ._ggf --;if _bbb ._ggf ==0{_bbb ._ggf =_bbb ._afb .ColorComponents ;_bbb ._cec ++;};if _bbb ._cec ==_bbb ._afb .Width {if _bbb ._fbd {_bbb ._cc .FinishByte ();};_bbb ._cec =0;};return nil ;};type SampleWriter interface{WriteSample (_gdf uint32 )error ;WriteSamples (_ge []uint32 )error ;};func (_aa *Writer )WriteSamples (samples []uint32 )error {for _fbc :=0;_fbc < len (samples );_fbc ++{if _fed :=_aa .WriteSample (samples [_fbc ]);_fed !=nil {return _fed ;};};return nil ;};func NewReader (img _g .ImageBase )*Reader {return &Reader {_fe :_a .NewReader (img .Data ),_f :img ,_ga :img .ColorComponents ,_dc :img .BytesPerLine *8!=img .ColorComponents *img .BitsPerComponent *img .Width };};type Reader struct{_f _g .ImageBase ;_fe *_a .Reader ;_b ,_gg ,_ga int ;_dc bool ;};func (_fb *Reader )ReadSample ()(uint32 ,error ){if _fb ._gg ==_fb ._f .Height {return 0,_e .EOF ;};_fg ,_af :=_fb ._fe .ReadBits (byte (_fb ._f .BitsPerComponent ));if _af !=nil {return 0,_af ;};_fb ._ga --;if _fb ._ga ==0{_fb ._ga =_fb ._f .ColorComponents ;_fb ._b ++;};if _fb ._b ==_fb ._f .Width {if _fb ._dc {_fb ._fe .ConsumeRemainingBits ();};_fb ._b =0;_fb ._gg ++;};return uint32 (_fg ),nil ;};type Writer struct{_afb _g .ImageBase ;_cc *_a .Writer ;_cec ,_ggf int ;_fbd bool ;};func NewWriter (img _g .ImageBase )*Writer {return &Writer {_cc :_a .NewWriterMSB (img .Data ),_afb :img ,_ggf :img .ColorComponents ,_fbd :img .BytesPerLine *8!=img .ColorComponents *img .BitsPerComponent *img .Width };};
|
||||
package sampling ;import (_b "github.com/unidoc/unipdf/v3/internal/bitwise";_eb "github.com/unidoc/unipdf/v3/internal/imageutil";_f "io";);func (_efg *Writer )WriteSample (sample uint32 )error {if _ ,_bea :=_efg ._ff .WriteBits (uint64 (sample ),_efg ._db .BitsPerComponent );_bea !=nil {return _bea ;};_efg ._dae --;if _efg ._dae ==0{_efg ._dae =_efg ._db .ColorComponents ;_efg ._fa ++;};if _efg ._fa ==_efg ._db .Width {if _efg ._beg {_efg ._ff .FinishByte ();};_efg ._fa =0;};return nil ;};func (_fe *Reader )ReadSample ()(uint32 ,error ){if _fe ._a ==_fe ._g .Height {return 0,_f .EOF ;};_eg ,_gg :=_fe ._d .ReadBits (byte (_fe ._g .BitsPerComponent ));if _gg !=nil {return 0,_gg ;};_fe ._ea --;if _fe ._ea ==0{_fe ._ea =_fe ._g .ColorComponents ;_fe ._gf ++;};if _fe ._gf ==_fe ._g .Width {if _fe ._ed {_fe ._d .ConsumeRemainingBits ();};_fe ._gf =0;_fe ._a ++;};return uint32 (_eg ),nil ;};func ResampleBytes (data []byte ,bitsPerSample int )[]uint32 {var _dd []uint32 ;_ga :=bitsPerSample ;var _da uint32 ;var _fg byte ;_bc :=0;_fc :=0;_egf :=0;for _egf < len (data ){if _bc > 0{_bb :=_bc ;if _ga < _bb {_bb =_ga ;};_da =(_da <<uint (_bb ))|uint32 (_fg >>uint (8-_bb ));_bc -=_bb ;if _bc > 0{_fg =_fg <<uint (_bb );}else {_fg =0;};_ga -=_bb ;if _ga ==0{_dd =append (_dd ,_da );_ga =bitsPerSample ;_da =0;_fc ++;};}else {_ebb :=data [_egf ];_egf ++;_bf :=8;if _ga < _bf {_bf =_ga ;};_bc =8-_bf ;_da =(_da <<uint (_bf ))|uint32 (_ebb >>uint (_bc ));if _bf < 8{_fg =_ebb <<uint (_bf );};_ga -=_bf ;if _ga ==0{_dd =append (_dd ,_da );_ga =bitsPerSample ;_da =0;_fc ++;};};};for _bc >=bitsPerSample {_fed :=_bc ;if _ga < _fed {_fed =_ga ;};_da =(_da <<uint (_fed ))|uint32 (_fg >>uint (8-_fed ));_bc -=_fed ;if _bc > 0{_fg =_fg <<uint (_fed );}else {_fg =0;};_ga -=_fed ;if _ga ==0{_dd =append (_dd ,_da );_ga =bitsPerSample ;_da =0;_fc ++;};};return _dd ;};type Reader struct{_g _eb .ImageBase ;_d *_b .Reader ;_gf ,_a ,_ea int ;_ed bool ;};func ResampleUint32 (data []uint32 ,bitsPerInputSample int ,bitsPerOutputSample int )[]uint32 {var _gd []uint32 ;_aa :=bitsPerOutputSample ;var _edd uint32 ;var _ggf uint32 ;_ag :=0;_gdb :=0;_ge :=0;for _ge < len (data ){if _ag > 0{_ggc :=_ag ;if _aa < _ggc {_ggc =_aa ;};_edd =(_edd <<uint (_ggc ))|uint32 (_ggf >>uint (bitsPerInputSample -_ggc ));_ag -=_ggc ;if _ag > 0{_ggf =_ggf <<uint (_ggc );}else {_ggf =0;};_aa -=_ggc ;if _aa ==0{_gd =append (_gd ,_edd );_aa =bitsPerOutputSample ;_edd =0;_gdb ++;};}else {_be :=data [_ge ];_ge ++;_df :=bitsPerInputSample ;if _aa < _df {_df =_aa ;};_ag =bitsPerInputSample -_df ;_edd =(_edd <<uint (_df ))|uint32 (_be >>uint (_ag ));if _df < bitsPerInputSample {_ggf =_be <<uint (_df );};_aa -=_df ;if _aa ==0{_gd =append (_gd ,_edd );_aa =bitsPerOutputSample ;_edd =0;_gdb ++;};};};for _ag >=bitsPerOutputSample {_de :=_ag ;if _aa < _de {_de =_aa ;};_edd =(_edd <<uint (_de ))|uint32 (_ggf >>uint (bitsPerInputSample -_de ));_ag -=_de ;if _ag > 0{_ggf =_ggf <<uint (_de );}else {_ggf =0;};_aa -=_de ;if _aa ==0{_gd =append (_gd ,_edd );_aa =bitsPerOutputSample ;_edd =0;_gdb ++;};};if _aa > 0&&_aa < bitsPerOutputSample {_edd <<=uint (_aa );_gd =append (_gd ,_edd );};return _gd ;};func NewReader (img _eb .ImageBase )*Reader {return &Reader {_d :_b .NewReader (img .Data ),_g :img ,_ea :img .ColorComponents ,_ed :img .BytesPerLine *8!=img .ColorComponents *img .BitsPerComponent *img .Width };};func (_beaf *Writer )WriteSamples (samples []uint32 )error {for _bbd :=0;_bbd < len (samples );_bbd ++{if _gb :=_beaf .WriteSample (samples [_bbd ]);_gb !=nil {return _gb ;};};return nil ;};func NewWriter (img _eb .ImageBase )*Writer {return &Writer {_ff :_b .NewWriterMSB (img .Data ),_db :img ,_dae :img .ColorComponents ,_beg :img .BytesPerLine *8!=img .ColorComponents *img .BitsPerComponent *img .Width };};type SampleReader interface{ReadSample ()(uint32 ,error );ReadSamples (_ec []uint32 )error ;};type SampleWriter interface{WriteSample (_bd uint32 )error ;WriteSamples (_gda []uint32 )error ;};type Writer struct{_db _eb .ImageBase ;_ff *_b .Writer ;_fa ,_dae int ;_beg bool ;};func (_ab *Reader )ReadSamples (samples []uint32 )(_ef error ){for _ebd :=0;_ebd < len (samples );_ebd ++{samples [_ebd ],_ef =_ab .ReadSample ();if _ef !=nil {return _ef ;};};return nil ;};
|
||||
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4348
model/model.go
4348
model/model.go
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@ -10,43 +10,37 @@
|
||||
// terms that can be accessed at https://unidoc.io/eula/
|
||||
|
||||
// Package sighandler implements digital signature handlers for PDF signature validation and signing.
|
||||
package sighandler ;import (_g "bytes";_dd "crypto";_e "crypto/rand";_ab "crypto/rsa";_ag "crypto/x509";_fcd "crypto/x509/pkix";_ad "encoding/asn1";_gc "errors";_db "fmt";_ge "github.com/unidoc/pkcs7";_af "github.com/unidoc/timestamp";_bd "github.com/unidoc/unipdf/v3/core";_c "github.com/unidoc/unipdf/v3/model";_b "hash";_d "io";_fcg "io/ioutil";_fc "net/http";_f "time";);
|
||||
package sighandler ;import (_eb "bytes";_eg "crypto";_af "crypto/rand";_ec "crypto/rsa";_gg "crypto/x509";_fc "crypto/x509/pkix";_aa "encoding/asn1";_ff "errors";_bg "fmt";_ggf "github.com/unidoc/pkcs7";_bgb "github.com/unidoc/timestamp";_d "github.com/unidoc/unipdf/v3/core";_fb "github.com/unidoc/unipdf/v3/model";_g "hash";_f "io";_bb "io/ioutil";_b "net/http";_a "time";);
|
||||
|
||||
// NewAdobeX509RSASHA1Custom creates a new Adobe.PPKMS/Adobe.PPKLite adbe.x509.rsa_sha1 signature handler
|
||||
// with a custom signing function. Both parameters may be nil for the signature validation.
|
||||
func NewAdobeX509RSASHA1Custom (certificate *_ag .Certificate ,signFunc SignFunc )(_c .SignatureHandler ,error ){return &adobeX509RSASHA1 {_dea :certificate ,_dcd :signFunc },nil ;};
|
||||
// NewEmptyAdobePKCS7Detached creates a new Adobe.PPKMS/Adobe.PPKLite adbe.pkcs7.detached
|
||||
// signature handler. The generated signature is empty and of size signatureLen.
|
||||
// The signatureLen parameter can be 0 for the signature validation.
|
||||
func NewEmptyAdobePKCS7Detached (signatureLen int )(_fb .SignatureHandler ,error ){return &adobePKCS7Detached {_c :true ,_aaf :signatureLen },nil ;};
|
||||
|
||||
// IsApplicable returns true if the signature handler is applicable for the PdfSignature
|
||||
func (_ag *adobePKCS7Detached )IsApplicable (sig *_fb .PdfSignature )bool {if sig ==nil ||sig .Filter ==nil ||sig .SubFilter ==nil {return false ;};return (*sig .Filter =="A\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004d\u0053"||*sig .Filter =="\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065")&&*sig .SubFilter =="\u0061\u0064\u0062\u0065.p\u006b\u0063\u0073\u0037\u002e\u0064\u0065\u0074\u0061\u0063\u0068\u0065\u0064";};
|
||||
|
||||
// NewDocTimeStamp creates a new DocTimeStamp signature handler.
|
||||
// Both the timestamp server URL and the hash algorithm can be empty for the
|
||||
// signature validation.
|
||||
// The following hash algorithms are supported:
|
||||
// crypto.SHA1, crypto.SHA256, crypto.SHA384, crypto.SHA512.
|
||||
// NOTE: the handler will do a mock Sign when initializing the signature
|
||||
// in order to estimate the signature size. Use NewDocTimeStampWithOpts
|
||||
// for providing the signature size.
|
||||
func NewDocTimeStamp (timestampServerURL string ,hashAlgorithm _eg .Hash )(_fb .SignatureHandler ,error ){return &docTimeStamp {_fbgb :timestampServerURL ,_ceb :hashAlgorithm },nil ;};
|
||||
|
||||
// NewDigest creates a new digest.
|
||||
func (_fa *adobeX509RSASHA1 )NewDigest (sig *_c .PdfSignature )(_c .Hasher ,error ){_dba ,_dad :=_fa .getCertificate (sig );if _dad !=nil {return nil ,_dad ;};_fda ,_ :=_dgc (_dba .SignatureAlgorithm );return _fda .New (),nil ;};
|
||||
func (_dfb *docTimeStamp )NewDigest (sig *_fb .PdfSignature )(_fb .Hasher ,error ){return _eb .NewBuffer (nil ),nil ;};
|
||||
|
||||
// NewAdobePKCS7Detached creates a new Adobe.PPKMS/Adobe.PPKLite adbe.pkcs7.detached signature handler.
|
||||
// Both parameters may be nil for the signature validation.
|
||||
func NewAdobePKCS7Detached (privateKey *_ab .PrivateKey ,certificate *_ag .Certificate )(_c .SignatureHandler ,error ){return &adobePKCS7Detached {_gg :certificate ,_fd :privateKey },nil ;};
|
||||
|
||||
// Validate validates PdfSignature.
|
||||
func (_daa *adobeX509RSASHA1 )Validate (sig *_c .PdfSignature ,digest _c .Hasher )(_c .SignatureValidationResult ,error ){_fea ,_bcf :=_daa .getCertificate (sig );if _bcf !=nil {return _c .SignatureValidationResult {},_bcf ;};_ae :=sig .Contents .Bytes ();var _bcb []byte ;if _ ,_cfc :=_ad .Unmarshal (_ae ,&_bcb );_cfc !=nil {return _c .SignatureValidationResult {},_cfc ;};_aaf ,_ff :=digest .(_b .Hash );if !_ff {return _c .SignatureValidationResult {},_gc .New ("\u0068a\u0073h\u0020\u0074\u0079\u0070\u0065\u0020\u0065\u0072\u0072\u006f\u0072");};_cgg ,_ :=_dgc (_fea .SignatureAlgorithm );if _bg :=_ab .VerifyPKCS1v15 (_fea .PublicKey .(*_ab .PublicKey ),_cgg ,_aaf .Sum (nil ),_bcb );_bg !=nil {return _c .SignatureValidationResult {},_bg ;};return _c .SignatureValidationResult {IsSigned :true ,IsVerified :true },nil ;};
|
||||
|
||||
// NewDigest creates a new digest.
|
||||
func (_daga *docTimeStamp )NewDigest (sig *_c .PdfSignature )(_c .Hasher ,error ){return _g .NewBuffer (nil ),nil ;};
|
||||
|
||||
// Validate validates PdfSignature.
|
||||
func (_dde *docTimeStamp )Validate (sig *_c .PdfSignature ,digest _c .Hasher )(_c .SignatureValidationResult ,error ){_fff :=sig .Contents .Bytes ();_bgg ,_fdg :=_ge .Parse (_fff );if _fdg !=nil {return _c .SignatureValidationResult {},_fdg ;};if _fdg =_bgg .Verify ();_fdg !=nil {return _c .SignatureValidationResult {},_fdg ;};var _bbf timestampInfo ;_ ,_fdg =_ad .Unmarshal (_bgg .Content ,&_bbf );if _fdg !=nil {return _c .SignatureValidationResult {},_fdg ;};_feaa ,_fdg :=_gfd (_bbf .MessageImprint .HashAlgorithm .Algorithm );if _fdg !=nil {return _c .SignatureValidationResult {},_fdg ;};_fbd :=_feaa .New ();_acd :=digest .(*_g .Buffer );_fbd .Write (_acd .Bytes ());_fcdc :=_fbd .Sum (nil );_bcfb :=_c .SignatureValidationResult {IsSigned :true ,IsVerified :_g .Equal (_fcdc ,_bbf .MessageImprint .HashedMessage ),GeneralizedTime :_bbf .GeneralizedTime };return _bcfb ,nil ;};
|
||||
|
||||
// InitSignature initialises the PdfSignature.
|
||||
func (_da *adobeX509RSASHA1 )InitSignature (sig *_c .PdfSignature )error {if _da ._dea ==nil {return _gc .New ("c\u0065\u0072\u0074\u0069\u0066\u0069c\u0061\u0074\u0065\u0020\u006d\u0075\u0073\u0074\u0020n\u006f\u0074\u0020b\u0065 \u006e\u0069\u006c");};if _da ._gd ==nil &&_da ._dcd ==nil {return _gc .New ("\u006d\u0075\u0073\u0074\u0020\u0070\u0072o\u0076\u0069\u0064e\u0020\u0065\u0069t\u0068\u0065r\u0020\u0061\u0020\u0070\u0072\u0069v\u0061te\u0020\u006b\u0065\u0079\u0020\u006f\u0072\u0020\u0061\u0020\u0073\u0069\u0067\u006e\u0069\u006e\u0067\u0020\u0066\u0075\u006e\u0063\u0074\u0069\u006f\u006e");};_cad :=*_da ;sig .Handler =&_cad ;sig .Filter =_bd .MakeName ("\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065");sig .SubFilter =_bd .MakeName ("\u0061d\u0062e\u002e\u0078\u0035\u0030\u0039.\u0072\u0073a\u005f\u0073\u0068\u0061\u0031");sig .Cert =_bd .MakeString (string (_cad ._dea .Raw ));sig .Reference =nil ;_cadb ,_cc :=_cad .NewDigest (sig );if _cc !=nil {return _cc ;};_cadb .Write ([]byte ("\u0063\u0061\u006c\u0063\u0075\u006ca\u0074\u0065\u0020\u0074\u0068\u0065\u0020\u0043\u006f\u006e\u0074\u0065\u006et\u0073\u0020\u0066\u0069\u0065\u006c\u0064 \u0073\u0069\u007a\u0065"));return _cad .Sign (sig ,_cadb );};func (_efg *adobeX509RSASHA1 )getCertificate (_fcgc *_c .PdfSignature )(*_ag .Certificate ,error ){if _efg ._dea !=nil {return _efg ._dea ,nil ;};var _agf []byte ;switch _eg :=_fcgc .Cert .(type ){case *_bd .PdfObjectString :_agf =_eg .Bytes ();case *_bd .PdfObjectArray :if _eg .Len ()==0{return nil ,_gc .New ("\u006e\u006f\u0020s\u0069\u0067\u006e\u0061t\u0075\u0072\u0065\u0020\u0063\u0065\u0072t\u0069\u0066\u0069\u0063\u0061\u0074\u0065\u0073\u0020\u0066\u006f\u0075\u006e\u0064");};for _ ,_feg :=range _eg .Elements (){_dag ,_ddg :=_bd .GetString (_feg );if !_ddg {return nil ,_db .Errorf ("\u0069\u006ev\u0061\u006c\u0069\u0064\u0020\u0063\u0065\u0072\u0074\u0069\u0066\u0069\u0063\u0061\u0074\u0065\u0020\u006f\u0062j\u0065\u0063\u0074\u0020\u0074\u0079p\u0065\u0020\u0069\u006e\u0020\u0073\u0069\u0067\u006e\u0061\u0074\u0075\u0072\u0065 \u0063\u0065r\u0074\u0069\u0066\u0069c\u0061\u0074\u0065\u0020\u0063h\u0061\u0069\u006e\u003a\u0020\u0025\u0054",_feg );};_agf =append (_agf ,_dag .Bytes ()...);};default:return nil ,_db .Errorf ("\u0069n\u0076\u0061l\u0069\u0064\u0020s\u0069\u0067\u006e\u0061\u0074\u0075\u0072e\u0020\u0063\u0065\u0072\u0074\u0069f\u0069\u0063\u0061\u0074\u0065\u0020\u006f\u0062\u006a\u0065\u0063t\u0020\u0074\u0079\u0070\u0065\u003a\u0020\u0025\u0054",_eg );};_bc ,_eaf :=_ag .ParseCertificates (_agf );if _eaf !=nil {return nil ,_eaf ;};return _bc [0],nil ;};
|
||||
|
||||
// Sign sets the Contents fields for the PdfSignature.
|
||||
func (_ccc *adobeX509RSASHA1 )Sign (sig *_c .PdfSignature ,digest _c .Hasher )error {var _bae []byte ;var _ce error ;if _ccc ._dcd !=nil {_bae ,_ce =_ccc ._dcd (sig ,digest );if _ce !=nil {return _ce ;};}else {_adb ,_df :=digest .(_b .Hash );if !_df {return _gc .New ("\u0068a\u0073h\u0020\u0074\u0079\u0070\u0065\u0020\u0065\u0072\u0072\u006f\u0072");};_ddgc ,_ :=_dgc (_ccc ._dea .SignatureAlgorithm );_bae ,_ce =_ab .SignPKCS1v15 (_e .Reader ,_ccc ._gd ,_ddgc ,_adb .Sum (nil ));if _ce !=nil {return _ce ;};};_bae ,_ce =_ad .Marshal (_bae );if _ce !=nil {return _ce ;};sig .Contents =_bd .MakeHexString (string (_bae ));return nil ;};
|
||||
|
||||
// InitSignature initialises the PdfSignature.
|
||||
func (_ea *adobePKCS7Detached )InitSignature (sig *_c .PdfSignature )error {if !_ea ._ga {if _ea ._gg ==nil {return _gc .New ("c\u0065\u0072\u0074\u0069\u0066\u0069c\u0061\u0074\u0065\u0020\u006d\u0075\u0073\u0074\u0020n\u006f\u0074\u0020b\u0065 \u006e\u0069\u006c");};if _ea ._fd ==nil {return _gc .New ("\u0070\u0072\u0069\u0076\u0061\u0074\u0065\u004b\u0065\u0079\u0020m\u0075\u0073\u0074\u0020\u006e\u006f\u0074\u0020\u0062\u0065 \u006e\u0069\u006c");};};_adg :=*_ea ;sig .Handler =&_adg ;sig .Filter =_bd .MakeName ("\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065");sig .SubFilter =_bd .MakeName ("\u0061\u0064\u0062\u0065.p\u006b\u0063\u0073\u0037\u002e\u0064\u0065\u0074\u0061\u0063\u0068\u0065\u0064");sig .Reference =nil ;_gga ,_bf :=_adg .NewDigest (sig );if _bf !=nil {return _bf ;};_gga .Write ([]byte ("\u0063\u0061\u006c\u0063\u0075\u006ca\u0074\u0065\u0020\u0074\u0068\u0065\u0020\u0043\u006f\u006e\u0074\u0065\u006et\u0073\u0020\u0066\u0069\u0065\u006c\u0064 \u0073\u0069\u007a\u0065"));return _adg .Sign (sig ,_gga );};
|
||||
// IsApplicable returns true if the signature handler is applicable for the PdfSignature.
|
||||
func (_gca *adobeX509RSASHA1 )IsApplicable (sig *_fb .PdfSignature )bool {if sig ==nil ||sig .Filter ==nil ||sig .SubFilter ==nil {return false ;};return (*sig .Filter =="A\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004d\u0053"||*sig .Filter =="\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065")&&*sig .SubFilter =="\u0061d\u0062e\u002e\u0078\u0035\u0030\u0039.\u0072\u0073a\u005f\u0073\u0068\u0061\u0031";};
|
||||
|
||||
// Sign sets the Contents fields.
|
||||
func (_dec *adobePKCS7Detached )Sign (sig *_c .PdfSignature ,digest _c .Hasher )error {if _dec ._ga {_dg :=_dec ._cg ;if _dg <=0{_dg =8192;};sig .Contents =_bd .MakeHexString (string (make ([]byte ,_dg )));return nil ;};_bfb :=digest .(*_g .Buffer );_gfg ,_afg :=_ge .NewSignedData (_bfb .Bytes ());if _afg !=nil {return _afg ;};if _ac :=_gfg .AddSigner (_dec ._gg ,_dec ._fd ,_ge .SignerInfoConfig {});_ac !=nil {return _ac ;};_gfg .Detach ();_abd ,_afg :=_gfg .Finish ();if _afg !=nil {return _afg ;};_ca :=make ([]byte ,8192);copy (_ca ,_abd );sig .Contents =_bd .MakeHexString (string (_ca ));return nil ;};type adobeX509RSASHA1 struct{_gd *_ab .PrivateKey ;_dea *_ag .Certificate ;_dcd SignFunc ;};
|
||||
func (_ca *adobePKCS7Detached )Sign (sig *_fb .PdfSignature ,digest _fb .Hasher )error {if _ca ._c {_cc :=_ca ._aaf ;if _cc <=0{_cc =8192;};sig .Contents =_d .MakeHexString (string (make ([]byte ,_cc )));return nil ;};_ged :=digest .(*_eb .Buffer );_fd ,_ee :=_ggf .NewSignedData (_ged .Bytes ());if _ee !=nil {return _ee ;};if _cf :=_fd .AddSigner (_ca ._da ,_ca ._aaa ,_ggf .SignerInfoConfig {});_cf !=nil {return _cf ;};_fd .Detach ();_fe ,_ee :=_fd .Finish ();if _ee !=nil {return _ee ;};_daa :=make ([]byte ,8192);copy (_daa ,_fe );sig .Contents =_d .MakeHexString (string (_daa ));return nil ;};
|
||||
|
||||
// SignFunc represents a custom signing function. The function should return
|
||||
// the computed signature.
|
||||
type SignFunc func (_efe *_c .PdfSignature ,_ded _c .Hasher )([]byte ,error );
|
||||
// Validate validates PdfSignature.
|
||||
func (_ga *adobePKCS7Detached )Validate (sig *_fb .PdfSignature ,digest _fb .Hasher )(_fb .SignatureValidationResult ,error ){_eca :=sig .Contents .Bytes ();_dg ,_fgc :=_ggf .Parse (_eca );if _fgc !=nil {return _fb .SignatureValidationResult {},_fgc ;};_ba :=digest .(*_eb .Buffer );_dg .Content =_ba .Bytes ();if _fgc =_dg .Verify ();_fgc !=nil {return _fb .SignatureValidationResult {},_fgc ;};return _fb .SignatureValidationResult {IsSigned :true ,IsVerified :true },nil ;};
|
||||
|
||||
// DocTimeStampOpts defines options for configuring the timestamp handler.
|
||||
type DocTimeStampOpts struct{
|
||||
@ -58,50 +52,56 @@ type DocTimeStampOpts struct{
|
||||
// signature.
|
||||
SignatureSize int ;};
|
||||
|
||||
// InitSignature initialises the PdfSignature.
|
||||
func (_fdb *adobeX509RSASHA1 )InitSignature (sig *_fb .PdfSignature )error {if _fdb ._bad ==nil {return _ff .New ("c\u0065\u0072\u0074\u0069\u0066\u0069c\u0061\u0074\u0065\u0020\u006d\u0075\u0073\u0074\u0020n\u006f\u0074\u0020b\u0065 \u006e\u0069\u006c");};if _fdb ._fa ==nil &&_fdb ._df ==nil {return _ff .New ("\u006d\u0075\u0073\u0074\u0020\u0070\u0072o\u0076\u0069\u0064e\u0020\u0065\u0069t\u0068\u0065r\u0020\u0061\u0020\u0070\u0072\u0069v\u0061te\u0020\u006b\u0065\u0079\u0020\u006f\u0072\u0020\u0061\u0020\u0073\u0069\u0067\u006e\u0069\u006e\u0067\u0020\u0066\u0075\u006e\u0063\u0074\u0069\u006f\u006e");};_fbb :=*_fdb ;sig .Handler =&_fbb ;sig .Filter =_d .MakeName ("\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065");sig .SubFilter =_d .MakeName ("\u0061d\u0062e\u002e\u0078\u0035\u0030\u0039.\u0072\u0073a\u005f\u0073\u0068\u0061\u0031");sig .Cert =_d .MakeString (string (_fbb ._bad .Raw ));sig .Reference =nil ;_ae ,_dd :=_fbb .NewDigest (sig );if _dd !=nil {return _dd ;};_ae .Write ([]byte ("\u0063\u0061\u006c\u0063\u0075\u006ca\u0074\u0065\u0020\u0074\u0068\u0065\u0020\u0043\u006f\u006e\u0074\u0065\u006et\u0073\u0020\u0066\u0069\u0065\u006c\u0064 \u0073\u0069\u007a\u0065"));return _fbb .Sign (sig ,_ae );};type docTimeStamp struct{_fbgb string ;_ceb _eg .Hash ;_bab int ;};
|
||||
|
||||
// NewAdobeX509RSASHA1Custom creates a new Adobe.PPKMS/Adobe.PPKLite adbe.x509.rsa_sha1 signature handler
|
||||
// with a custom signing function. Both parameters may be nil for the signature validation.
|
||||
func NewAdobeX509RSASHA1Custom (certificate *_gg .Certificate ,signFunc SignFunc )(_fb .SignatureHandler ,error ){return &adobeX509RSASHA1 {_bad :certificate ,_df :signFunc },nil ;};
|
||||
|
||||
// InitSignature initialises the PdfSignature.
|
||||
func (_ffa *adobePKCS7Detached )InitSignature (sig *_fb .PdfSignature )error {if !_ffa ._c {if _ffa ._da ==nil {return _ff .New ("c\u0065\u0072\u0074\u0069\u0066\u0069c\u0061\u0074\u0065\u0020\u006d\u0075\u0073\u0074\u0020n\u006f\u0074\u0020b\u0065 \u006e\u0069\u006c");};if _ffa ._aaa ==nil {return _ff .New ("\u0070\u0072\u0069\u0076\u0061\u0074\u0065\u004b\u0065\u0079\u0020m\u0075\u0073\u0074\u0020\u006e\u006f\u0074\u0020\u0062\u0065 \u006e\u0069\u006c");};};_cg :=*_ffa ;sig .Handler =&_cg ;sig .Filter =_d .MakeName ("\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065");sig .SubFilter =_d .MakeName ("\u0061\u0064\u0062\u0065.p\u006b\u0063\u0073\u0037\u002e\u0064\u0065\u0074\u0061\u0063\u0068\u0065\u0064");sig .Reference =nil ;_gc ,_fbg :=_cg .NewDigest (sig );if _fbg !=nil {return _fbg ;};_gc .Write ([]byte ("\u0063\u0061\u006c\u0063\u0075\u006ca\u0074\u0065\u0020\u0074\u0068\u0065\u0020\u0043\u006f\u006e\u0074\u0065\u006et\u0073\u0020\u0066\u0069\u0065\u006c\u0064 \u0073\u0069\u007a\u0065"));return _cg .Sign (sig ,_gc );};type adobePKCS7Detached struct{_aaa *_ec .PrivateKey ;_da *_gg .Certificate ;_c bool ;_aaf int ;};
|
||||
|
||||
// Validate validates PdfSignature.
|
||||
func (_eed *docTimeStamp )Validate (sig *_fb .PdfSignature ,digest _fb .Hasher )(_fb .SignatureValidationResult ,error ){_gbg :=sig .Contents .Bytes ();_fdga ,_gfg :=_ggf .Parse (_gbg );if _gfg !=nil {return _fb .SignatureValidationResult {},_gfg ;};if _gfg =_fdga .Verify ();_gfg !=nil {return _fb .SignatureValidationResult {},_gfg ;};var _ecg timestampInfo ;_ ,_gfg =_aa .Unmarshal (_fdga .Content ,&_ecg );if _gfg !=nil {return _fb .SignatureValidationResult {},_gfg ;};_cd ,_gfg :=_afd (_ecg .MessageImprint .HashAlgorithm .Algorithm );if _gfg !=nil {return _fb .SignatureValidationResult {},_gfg ;};_aac :=_cd .New ();_cgd :=digest .(*_eb .Buffer );_aac .Write (_cgd .Bytes ());_aag :=_aac .Sum (nil );_ccb :=_fb .SignatureValidationResult {IsSigned :true ,IsVerified :_eb .Equal (_aag ,_ecg .MessageImprint .HashedMessage ),GeneralizedTime :_ecg .GeneralizedTime };return _ccb ,nil ;};type adobeX509RSASHA1 struct{_fa *_ec .PrivateKey ;_bad *_gg .Certificate ;_df SignFunc ;};
|
||||
|
||||
// IsApplicable returns true if the signature handler is applicable for the PdfSignature.
|
||||
func (_caa *docTimeStamp )IsApplicable (sig *_fb .PdfSignature )bool {if sig ==nil ||sig .Filter ==nil ||sig .SubFilter ==nil {return false ;};return (*sig .Filter =="A\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004d\u0053"||*sig .Filter =="\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065")&&*sig .SubFilter =="\u0045\u0054\u0053I\u002e\u0052\u0046\u0043\u0033\u0031\u0036\u0031";};func (_ac *docTimeStamp )getCertificate (_gcb *_fb .PdfSignature )(*_gg .Certificate ,error ){var _fde []byte ;switch _ebc :=_gcb .Cert .(type ){case *_d .PdfObjectString :_fde =_ebc .Bytes ();case *_d .PdfObjectArray :if _ebc .Len ()==0{return nil ,_ff .New ("\u006e\u006f\u0020s\u0069\u0067\u006e\u0061t\u0075\u0072\u0065\u0020\u0063\u0065\u0072t\u0069\u0066\u0069\u0063\u0061\u0074\u0065\u0073\u0020\u0066\u006f\u0075\u006e\u0064");};for _ ,_gbc :=range _ebc .Elements (){_bgc ,_daf :=_d .GetString (_gbc );if !_daf {return nil ,_bg .Errorf ("\u0069\u006ev\u0061\u006c\u0069\u0064\u0020\u0063\u0065\u0072\u0074\u0069\u0066\u0069\u0063\u0061\u0074\u0065\u0020\u006f\u0062j\u0065\u0063\u0074\u0020\u0074\u0079p\u0065\u0020\u0069\u006e\u0020\u0073\u0069\u0067\u006e\u0061\u0074\u0075\u0072\u0065 \u0063\u0065r\u0074\u0069\u0066\u0069c\u0061\u0074\u0065\u0020\u0063h\u0061\u0069\u006e\u003a\u0020\u0025\u0054",_gbc );};_fde =append (_fde ,_bgc .Bytes ()...);};default:return nil ,_bg .Errorf ("\u0069n\u0076\u0061l\u0069\u0064\u0020s\u0069\u0067\u006e\u0061\u0074\u0075\u0072e\u0020\u0063\u0065\u0072\u0074\u0069f\u0069\u0063\u0061\u0074\u0065\u0020\u006f\u0062\u006a\u0065\u0063t\u0020\u0074\u0079\u0070\u0065\u003a\u0020\u0025\u0054",_ebc );};_gee ,_fbge :=_gg .ParseCertificates (_fde );if _fbge !=nil {return nil ,_fbge ;};return _gee [0],nil ;};
|
||||
|
||||
// SignFunc represents a custom signing function. The function should return
|
||||
// the computed signature.
|
||||
type SignFunc func (_bf *_fb .PdfSignature ,_aga _fb .Hasher )([]byte ,error );
|
||||
|
||||
// NewAdobePKCS7Detached creates a new Adobe.PPKMS/Adobe.PPKLite adbe.pkcs7.detached signature handler.
|
||||
// Both parameters may be nil for the signature validation.
|
||||
func NewAdobePKCS7Detached (privateKey *_ec .PrivateKey ,certificate *_gg .Certificate )(_fb .SignatureHandler ,error ){return &adobePKCS7Detached {_da :certificate ,_aaa :privateKey },nil ;};
|
||||
|
||||
// NewDocTimeStampWithOpts returns a new DocTimeStamp configured using the
|
||||
// specified options. If no options are provided, default options will be used.
|
||||
// Both the timestamp server URL and the hash algorithm can be empty for the
|
||||
// signature validation.
|
||||
// The following hash algorithms are supported:
|
||||
// crypto.SHA1, crypto.SHA256, crypto.SHA384, crypto.SHA512.
|
||||
func NewDocTimeStampWithOpts (timestampServerURL string ,hashAlgorithm _dd .Hash ,opts *DocTimeStampOpts )(_c .SignatureHandler ,error ){if opts ==nil {opts =&DocTimeStampOpts {};};if opts .SignatureSize <=0{opts .SignatureSize =4192;};return &docTimeStamp {_ed :timestampServerURL ,_ede :hashAlgorithm ,_abf :opts .SignatureSize },nil ;};type adobePKCS7Detached struct{_fd *_ab .PrivateKey ;_gg *_ag .Certificate ;_ga bool ;_cg int ;};
|
||||
func NewDocTimeStampWithOpts (timestampServerURL string ,hashAlgorithm _eg .Hash ,opts *DocTimeStampOpts )(_fb .SignatureHandler ,error ){if opts ==nil {opts =&DocTimeStampOpts {};};if opts .SignatureSize <=0{opts .SignatureSize =4192;};return &docTimeStamp {_fbgb :timestampServerURL ,_ceb :hashAlgorithm ,_bab :opts .SignatureSize },nil ;};
|
||||
|
||||
// NewDigest creates a new digest.
|
||||
func (_bdc *adobeX509RSASHA1 )NewDigest (sig *_fb .PdfSignature )(_fb .Hasher ,error ){_eee ,_ega :=_bdc .getCertificate (sig );if _ega !=nil {return nil ,_ega ;};_ddf ,_ :=_ebe (_eee .SignatureAlgorithm );return _ddf .New (),nil ;};
|
||||
|
||||
// Validate validates PdfSignature.
|
||||
func (_efc *adobePKCS7Detached )Validate (sig *_c .PdfSignature ,digest _c .Hasher )(_c .SignatureValidationResult ,error ){_bb :=sig .Contents .Bytes ();_dca ,_gf :=_ge .Parse (_bb );if _gf !=nil {return _c .SignatureValidationResult {},_gf ;};_fg :=digest .(*_g .Buffer );_dca .Content =_fg .Bytes ();if _gf =_dca .Verify ();_gf !=nil {return _c .SignatureValidationResult {},_gf ;};return _c .SignatureValidationResult {IsSigned :true ,IsVerified :true },nil ;};func (_bdc *adobePKCS7Detached )getCertificate (_de *_c .PdfSignature )(*_ag .Certificate ,error ){if _bdc ._gg !=nil {return _bdc ._gg ,nil ;};var _ef []byte ;switch _dc :=_de .Cert .(type ){case *_bd .PdfObjectString :_ef =_dc .Bytes ();case *_bd .PdfObjectArray :if _dc .Len ()==0{return nil ,_gc .New ("\u006e\u006f\u0020s\u0069\u0067\u006e\u0061t\u0075\u0072\u0065\u0020\u0063\u0065\u0072t\u0069\u0066\u0069\u0063\u0061\u0074\u0065\u0073\u0020\u0066\u006f\u0075\u006e\u0064");};for _ ,_ec :=range _dc .Elements (){_cgd ,_gb :=_bd .GetString (_ec );if !_gb {return nil ,_db .Errorf ("\u0069\u006ev\u0061\u006c\u0069\u0064\u0020\u0063\u0065\u0072\u0074\u0069\u0066\u0069\u0063\u0061\u0074\u0065\u0020\u006f\u0062j\u0065\u0063\u0074\u0020\u0074\u0079p\u0065\u0020\u0069\u006e\u0020\u0073\u0069\u0067\u006e\u0061\u0074\u0075\u0072\u0065 \u0063\u0065r\u0074\u0069\u0066\u0069c\u0061\u0074\u0065\u0020\u0063h\u0061\u0069\u006e\u003a\u0020\u0025\u0054",_ec );};_ef =append (_ef ,_cgd .Bytes ()...);};default:return nil ,_db .Errorf ("\u0069n\u0076\u0061l\u0069\u0064\u0020s\u0069\u0067\u006e\u0061\u0074\u0075\u0072e\u0020\u0063\u0065\u0072\u0074\u0069f\u0069\u0063\u0061\u0074\u0065\u0020\u006f\u0062\u006a\u0065\u0063t\u0020\u0074\u0079\u0070\u0065\u003a\u0020\u0025\u0054",_dc );};_eac ,_cge :=_ag .ParseCertificates (_ef );if _cge !=nil {return nil ,_cge ;};return _eac [0],nil ;};func _dgc (_bbg _ag .SignatureAlgorithm )(_dd .Hash ,bool ){var _fe _dd .Hash ;switch _bbg {case _ag .SHA1WithRSA :_fe =_dd .SHA1 ;case _ag .SHA256WithRSA :_fe =_dd .SHA256 ;case _ag .SHA384WithRSA :_fe =_dd .SHA384 ;case _ag .SHA512WithRSA :_fe =_dd .SHA512 ;default:return _dd .SHA1 ,false ;};return _fe ,true ;};
|
||||
|
||||
// Sign sets the Contents fields for the PdfSignature.
|
||||
func (_fcb *docTimeStamp )Sign (sig *_c .PdfSignature ,digest _c .Hasher )error {_eba :=digest .(*_g .Buffer );_fag :=_fcb ._ede .New ();if _ ,_afd :=_d .Copy (_fag ,_eba );_afd !=nil {return _afd ;};_aafg :=_af .Request {HashAlgorithm :_fcb ._ede ,HashedMessage :_fag .Sum (nil ),Certificates :true ,Extensions :nil ,ExtraExtensions :nil };_age ,_cdb :=_aafg .Marshal ();if _cdb !=nil {return _cdb ;};_fed ,_cdb :=_fc .Post (_fcb ._ed ,"a\u0070\u0070\u006c\u0069\u0063\u0061t\u0069\u006f\u006e\u002f\u0074\u0069\u006d\u0065\u0073t\u0061\u006d\u0070-\u0071u\u0065\u0072\u0079",_g .NewBuffer (_age ));if _cdb !=nil {return _cdb ;};defer _fed .Body .Close ();_cef ,_cdb :=_fcg .ReadAll (_fed .Body );if _cdb !=nil {return _cdb ;};if _fed .StatusCode !=_fc .StatusOK {return _db .Errorf ("\u0068\u0074\u0074\u0070\u0020\u0073\u0074\u0061\u0074\u0075\u0073\u0020\u0063\u006f\u0064e\u0020n\u006f\u0074\u0020\u006f\u006b\u0020\u0028\u0067\u006f\u0074\u0020\u0025\u0064\u0029",_fed .StatusCode );};var _fbe struct{Version _ad .RawValue ;Content _ad .RawValue ;};if _ ,_cdb =_ad .Unmarshal (_cef ,&_fbe );_cdb !=nil {return _cdb ;};_cbe :=len (_fbe .Content .FullBytes );if _fcb ._abf > 0&&_cbe > _fcb ._abf {return _c .ErrSignNotEnoughSpace ;};if _cbe > 0{_fcb ._abf =_cbe +128;};sig .Contents =_bd .MakeHexString (string (_fbe .Content .FullBytes ));return nil ;};func (_afa *docTimeStamp )getCertificate (_geg *_c .PdfSignature )(*_ag .Certificate ,error ){var _eb []byte ;switch _bfd :=_geg .Cert .(type ){case *_bd .PdfObjectString :_eb =_bfd .Bytes ();case *_bd .PdfObjectArray :if _bfd .Len ()==0{return nil ,_gc .New ("\u006e\u006f\u0020s\u0069\u0067\u006e\u0061t\u0075\u0072\u0065\u0020\u0063\u0065\u0072t\u0069\u0066\u0069\u0063\u0061\u0074\u0065\u0073\u0020\u0066\u006f\u0075\u006e\u0064");};for _ ,_cac :=range _bfd .Elements (){_fdb ,_dbc :=_bd .GetString (_cac );if !_dbc {return nil ,_db .Errorf ("\u0069\u006ev\u0061\u006c\u0069\u0064\u0020\u0063\u0065\u0072\u0074\u0069\u0066\u0069\u0063\u0061\u0074\u0065\u0020\u006f\u0062j\u0065\u0063\u0074\u0020\u0074\u0079p\u0065\u0020\u0069\u006e\u0020\u0073\u0069\u0067\u006e\u0061\u0074\u0075\u0072\u0065 \u0063\u0065r\u0074\u0069\u0066\u0069c\u0061\u0074\u0065\u0020\u0063h\u0061\u0069\u006e\u003a\u0020\u0025\u0054",_cac );};_eb =append (_eb ,_fdb .Bytes ()...);};default:return nil ,_db .Errorf ("\u0069n\u0076\u0061l\u0069\u0064\u0020s\u0069\u0067\u006e\u0061\u0074\u0075\u0072e\u0020\u0063\u0065\u0072\u0074\u0069f\u0069\u0063\u0061\u0074\u0065\u0020\u006f\u0062\u006a\u0065\u0063t\u0020\u0074\u0079\u0070\u0065\u003a\u0020\u0025\u0054",_bfd );};_cb ,_cd :=_ag .ParseCertificates (_eb );if _cd !=nil {return nil ,_cd ;};return _cb [0],nil ;};
|
||||
func (_dba *adobeX509RSASHA1 )Validate (sig *_fb .PdfSignature ,digest _fb .Hasher )(_fb .SignatureValidationResult ,error ){_bfc ,_ebeg :=_dba .getCertificate (sig );if _ebeg !=nil {return _fb .SignatureValidationResult {},_ebeg ;};_cag :=sig .Contents .Bytes ();var _fcb []byte ;if _ ,_ffb :=_aa .Unmarshal (_cag ,&_fcb );_ffb !=nil {return _fb .SignatureValidationResult {},_ffb ;};_fdf ,_dae :=digest .(_g .Hash );if !_dae {return _fb .SignatureValidationResult {},_ff .New ("\u0068a\u0073h\u0020\u0074\u0079\u0070\u0065\u0020\u0065\u0072\u0072\u006f\u0072");};_ea ,_ :=_ebe (_bfc .SignatureAlgorithm );if _ce :=_ec .VerifyPKCS1v15 (_bfc .PublicKey .(*_ec .PublicKey ),_ea ,_fdf .Sum (nil ),_fcb );_ce !=nil {return _fb .SignatureValidationResult {},_ce ;};return _fb .SignatureValidationResult {IsSigned :true ,IsVerified :true },nil ;};func (_cb *adobeX509RSASHA1 )getCertificate (_ed *_fb .PdfSignature )(*_gg .Certificate ,error ){if _cb ._bad !=nil {return _cb ._bad ,nil ;};var _bfe []byte ;switch _fbc :=_ed .Cert .(type ){case *_d .PdfObjectString :_bfe =_fbc .Bytes ();case *_d .PdfObjectArray :if _fbc .Len ()==0{return nil ,_ff .New ("\u006e\u006f\u0020s\u0069\u0067\u006e\u0061t\u0075\u0072\u0065\u0020\u0063\u0065\u0072t\u0069\u0066\u0069\u0063\u0061\u0074\u0065\u0073\u0020\u0066\u006f\u0075\u006e\u0064");};for _ ,_gcd :=range _fbc .Elements (){_dbc ,_gf :=_d .GetString (_gcd );if !_gf {return nil ,_bg .Errorf ("\u0069\u006ev\u0061\u006c\u0069\u0064\u0020\u0063\u0065\u0072\u0074\u0069\u0066\u0069\u0063\u0061\u0074\u0065\u0020\u006f\u0062j\u0065\u0063\u0074\u0020\u0074\u0079p\u0065\u0020\u0069\u006e\u0020\u0073\u0069\u0067\u006e\u0061\u0074\u0075\u0072\u0065 \u0063\u0065r\u0074\u0069\u0066\u0069c\u0061\u0074\u0065\u0020\u0063h\u0061\u0069\u006e\u003a\u0020\u0025\u0054",_gcd );};_bfe =append (_bfe ,_dbc .Bytes ()...);};default:return nil ,_bg .Errorf ("\u0069n\u0076\u0061l\u0069\u0064\u0020s\u0069\u0067\u006e\u0061\u0074\u0075\u0072e\u0020\u0063\u0065\u0072\u0074\u0069f\u0069\u0063\u0061\u0074\u0065\u0020\u006f\u0062\u006a\u0065\u0063t\u0020\u0074\u0079\u0070\u0065\u003a\u0020\u0025\u0054",_fbc );};_gfc ,_gbb :=_gg .ParseCertificates (_bfe );if _gbb !=nil {return nil ,_gbb ;};return _gfc [0],nil ;};func _afd (_aef _aa .ObjectIdentifier )(_eg .Hash ,error ){switch {case _aef .Equal (_ggf .OIDDigestAlgorithmSHA1 ),_aef .Equal (_ggf .OIDDigestAlgorithmECDSASHA1 ),_aef .Equal (_ggf .OIDDigestAlgorithmDSA ),_aef .Equal (_ggf .OIDDigestAlgorithmDSASHA1 ),_aef .Equal (_ggf .OIDEncryptionAlgorithmRSA ):return _eg .SHA1 ,nil ;case _aef .Equal (_ggf .OIDDigestAlgorithmSHA256 ),_aef .Equal (_ggf .OIDDigestAlgorithmECDSASHA256 ):return _eg .SHA256 ,nil ;case _aef .Equal (_ggf .OIDDigestAlgorithmSHA384 ),_aef .Equal (_ggf .OIDDigestAlgorithmECDSASHA384 ):return _eg .SHA384 ,nil ;case _aef .Equal (_ggf .OIDDigestAlgorithmSHA512 ),_aef .Equal (_ggf .OIDDigestAlgorithmECDSASHA512 ):return _eg .SHA512 ,nil ;};return _eg .Hash (0),_ggf .ErrUnsupportedAlgorithm ;};
|
||||
|
||||
// NewAdobeX509RSASHA1 creates a new Adobe.PPKMS/Adobe.PPKLite adbe.x509.rsa_sha1 signature handler.
|
||||
// Both parameters may be nil for the signature validation.
|
||||
func NewAdobeX509RSASHA1 (privateKey *_ab .PrivateKey ,certificate *_ag .Certificate )(_c .SignatureHandler ,error ){return &adobeX509RSASHA1 {_dea :certificate ,_gd :privateKey },nil ;};
|
||||
func NewAdobeX509RSASHA1 (privateKey *_ec .PrivateKey ,certificate *_gg .Certificate )(_fb .SignatureHandler ,error ){return &adobeX509RSASHA1 {_bad :certificate ,_fa :privateKey },nil ;};type timestampInfo struct{Version int ;Policy _aa .RawValue ;MessageImprint struct{HashAlgorithm _fc .AlgorithmIdentifier ;HashedMessage []byte ;};SerialNumber _aa .RawValue ;GeneralizedTime _a .Time ;};func _ebe (_age _gg .SignatureAlgorithm )(_eg .Hash ,bool ){var _fef _eg .Hash ;switch _age {case _gg .SHA1WithRSA :_fef =_eg .SHA1 ;case _gg .SHA256WithRSA :_fef =_eg .SHA256 ;case _gg .SHA384WithRSA :_fef =_eg .SHA384 ;case _gg .SHA512WithRSA :_fef =_eg .SHA512 ;default:return _eg .SHA1 ,false ;};return _fef ,true ;};
|
||||
|
||||
// IsApplicable returns true if the signature handler is applicable for the PdfSignature
|
||||
func (_cf *adobePKCS7Detached )IsApplicable (sig *_c .PdfSignature )bool {if sig ==nil ||sig .Filter ==nil ||sig .SubFilter ==nil {return false ;};return (*sig .Filter =="A\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004d\u0053"||*sig .Filter =="\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065")&&*sig .SubFilter =="\u0061\u0064\u0062\u0065.p\u006b\u0063\u0073\u0037\u002e\u0064\u0065\u0074\u0061\u0063\u0068\u0065\u0064";};type timestampInfo struct{Version int ;Policy _ad .RawValue ;MessageImprint struct{HashAlgorithm _fcd .AlgorithmIdentifier ;HashedMessage []byte ;};SerialNumber _ad .RawValue ;GeneralizedTime _f .Time ;};
|
||||
// Sign sets the Contents fields for the PdfSignature.
|
||||
func (_agc *docTimeStamp )Sign (sig *_fb .PdfSignature ,digest _fb .Hasher )error {_bbe :=digest .(*_eb .Buffer );_aca :=_agc ._ceb .New ();if _ ,_bgd :=_f .Copy (_aca ,_bbe );_bgd !=nil {return _bgd ;};_egag :=_bgb .Request {HashAlgorithm :_agc ._ceb ,HashedMessage :_aca .Sum (nil ),Certificates :true ,Extensions :nil ,ExtraExtensions :nil };_gbe ,_eff :=_egag .Marshal ();if _eff !=nil {return _eff ;};_ffba ,_eff :=_b .Post (_agc ._fbgb ,"a\u0070\u0070\u006c\u0069\u0063\u0061t\u0069\u006f\u006e\u002f\u0074\u0069\u006d\u0065\u0073t\u0061\u006d\u0070-\u0071u\u0065\u0072\u0079",_eb .NewBuffer (_gbe ));if _eff !=nil {return _eff ;};defer _ffba .Body .Close ();_cbf ,_eff :=_bb .ReadAll (_ffba .Body );if _eff !=nil {return _eff ;};if _ffba .StatusCode !=_b .StatusOK {return _bg .Errorf ("\u0068\u0074\u0074\u0070\u0020\u0073\u0074\u0061\u0074\u0075\u0073\u0020\u0063\u006f\u0064e\u0020n\u006f\u0074\u0020\u006f\u006b\u0020\u0028\u0067\u006f\u0074\u0020\u0025\u0064\u0029",_ffba .StatusCode );};var _acg struct{Version _aa .RawValue ;Content _aa .RawValue ;};if _ ,_eff =_aa .Unmarshal (_cbf ,&_acg );_eff !=nil {return _eff ;};_bgcg :=len (_acg .Content .FullBytes );if _agc ._bab > 0&&_bgcg > _agc ._bab {return _fb .ErrSignNotEnoughSpace ;};if _bgcg > 0{_agc ._bab =_bgcg +128;};sig .Contents =_d .MakeHexString (string (_acg .Content .FullBytes ));return nil ;};
|
||||
|
||||
// Sign sets the Contents fields for the PdfSignature.
|
||||
func (_cfb *adobeX509RSASHA1 )Sign (sig *_fb .PdfSignature ,digest _fb .Hasher )error {var _bbd []byte ;var _dgd error ;if _cfb ._df !=nil {_bbd ,_dgd =_cfb ._df (sig ,digest );if _dgd !=nil {return _dgd ;};}else {_ede ,_fdg :=digest .(_g .Hash );if !_fdg {return _ff .New ("\u0068a\u0073h\u0020\u0074\u0079\u0070\u0065\u0020\u0065\u0072\u0072\u006f\u0072");};_fbd ,_ :=_ebe (_cfb ._bad .SignatureAlgorithm );_bbd ,_dgd =_ec .SignPKCS1v15 (_af .Reader ,_cfb ._fa ,_fbd ,_ede .Sum (nil ));if _dgd !=nil {return _dgd ;};};_bbd ,_dgd =_aa .Marshal (_bbd );if _dgd !=nil {return _dgd ;};sig .Contents =_d .MakeHexString (string (_bbd ));return nil ;};
|
||||
|
||||
// InitSignature initialises the PdfSignature.
|
||||
func (_fae *docTimeStamp )InitSignature (sig *_c .PdfSignature )error {_gge :=*_fae ;sig .Handler =&_gge ;sig .Filter =_bd .MakeName ("\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065");sig .SubFilter =_bd .MakeName ("\u0045\u0054\u0053I\u002e\u0052\u0046\u0043\u0033\u0031\u0036\u0031");sig .Reference =nil ;if _fae ._abf > 0{sig .Contents =_bd .MakeHexString (string (make ([]byte ,_fae ._abf )));}else {_fb ,_gcd :=_fae .NewDigest (sig );if _gcd !=nil {return _gcd ;};_fb .Write ([]byte ("\u0063\u0061\u006c\u0063\u0075\u006ca\u0074\u0065\u0020\u0074\u0068\u0065\u0020\u0043\u006f\u006e\u0074\u0065\u006et\u0073\u0020\u0066\u0069\u0065\u006c\u0064 \u0073\u0069\u007a\u0065"));if _gcd =_gge .Sign (sig ,_fb );_gcd !=nil {return _gcd ;};_fae ._abf =_gge ._abf ;};return nil ;};
|
||||
func (_ef *docTimeStamp )InitSignature (sig *_fb .PdfSignature )error {_edg :=*_ef ;sig .Handler =&_edg ;sig .Filter =_d .MakeName ("\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065");sig .SubFilter =_d .MakeName ("\u0045\u0054\u0053I\u002e\u0052\u0046\u0043\u0033\u0031\u0036\u0031");sig .Reference =nil ;if _ef ._bab > 0{sig .Contents =_d .MakeHexString (string (make ([]byte ,_ef ._bab )));}else {_bdf ,_bgf :=_ef .NewDigest (sig );if _bgf !=nil {return _bgf ;};_bdf .Write ([]byte ("\u0063\u0061\u006c\u0063\u0075\u006ca\u0074\u0065\u0020\u0074\u0068\u0065\u0020\u0043\u006f\u006e\u0074\u0065\u006et\u0073\u0020\u0066\u0069\u0065\u006c\u0064 \u0073\u0069\u007a\u0065"));if _bgf =_edg .Sign (sig ,_bdf );_bgf !=nil {return _bgf ;};_ef ._bab =_edg ._bab ;};return nil ;};func (_bc *adobePKCS7Detached )getCertificate (_egb *_fb .PdfSignature )(*_gg .Certificate ,error ){if _bc ._da !=nil {return _bc ._da ,nil ;};var _fg []byte ;switch _gb :=_egb .Cert .(type ){case *_d .PdfObjectString :_fg =_gb .Bytes ();case *_d .PdfObjectArray :if _gb .Len ()==0{return nil ,_ff .New ("\u006e\u006f\u0020s\u0069\u0067\u006e\u0061t\u0075\u0072\u0065\u0020\u0063\u0065\u0072t\u0069\u0066\u0069\u0063\u0061\u0074\u0065\u0073\u0020\u0066\u006f\u0075\u006e\u0064");};for _ ,_ad :=range _gb .Elements (){_dc ,_gd :=_d .GetString (_ad );if !_gd {return nil ,_bg .Errorf ("\u0069\u006ev\u0061\u006c\u0069\u0064\u0020\u0063\u0065\u0072\u0074\u0069\u0066\u0069\u0063\u0061\u0074\u0065\u0020\u006f\u0062j\u0065\u0063\u0074\u0020\u0074\u0079p\u0065\u0020\u0069\u006e\u0020\u0073\u0069\u0067\u006e\u0061\u0074\u0075\u0072\u0065 \u0063\u0065r\u0074\u0069\u0066\u0069c\u0061\u0074\u0065\u0020\u0063h\u0061\u0069\u006e\u003a\u0020\u0025\u0054",_ad );};_fg =append (_fg ,_dc .Bytes ()...);};default:return nil ,_bg .Errorf ("\u0069n\u0076\u0061l\u0069\u0064\u0020s\u0069\u0067\u006e\u0061\u0074\u0075\u0072e\u0020\u0063\u0065\u0072\u0074\u0069f\u0069\u0063\u0061\u0074\u0065\u0020\u006f\u0062\u006a\u0065\u0063t\u0020\u0074\u0079\u0070\u0065\u003a\u0020\u0025\u0054",_gb );};_dcd ,_dcdb :=_gg .ParseCertificates (_fg );if _dcdb !=nil {return nil ,_dcdb ;};return _dcd [0],nil ;};
|
||||
|
||||
// NewDigest creates a new digest.
|
||||
func (_gbb *adobePKCS7Detached )NewDigest (sig *_c .PdfSignature )(_c .Hasher ,error ){return _g .NewBuffer (nil ),nil ;};
|
||||
|
||||
// NewDocTimeStamp creates a new DocTimeStamp signature handler.
|
||||
// Both the timestamp server URL and the hash algorithm can be empty for the
|
||||
// signature validation.
|
||||
// The following hash algorithms are supported:
|
||||
// crypto.SHA1, crypto.SHA256, crypto.SHA384, crypto.SHA512.
|
||||
// NOTE: the handler will do a mock Sign when initializing the signature
|
||||
// in order to estimate the signature size. Use NewDocTimeStampWithOpts
|
||||
// for providing the signature size.
|
||||
func NewDocTimeStamp (timestampServerURL string ,hashAlgorithm _dd .Hash )(_c .SignatureHandler ,error ){return &docTimeStamp {_ed :timestampServerURL ,_ede :hashAlgorithm },nil ;};
|
||||
|
||||
// IsApplicable returns true if the signature handler is applicable for the PdfSignature.
|
||||
func (_gfa *docTimeStamp )IsApplicable (sig *_c .PdfSignature )bool {if sig ==nil ||sig .Filter ==nil ||sig .SubFilter ==nil {return false ;};return (*sig .Filter =="A\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004d\u0053"||*sig .Filter =="\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065")&&*sig .SubFilter =="\u0045\u0054\u0053I\u002e\u0052\u0046\u0043\u0033\u0031\u0036\u0031";};
|
||||
|
||||
// IsApplicable returns true if the signature handler is applicable for the PdfSignature.
|
||||
func (_dbg *adobeX509RSASHA1 )IsApplicable (sig *_c .PdfSignature )bool {if sig ==nil ||sig .Filter ==nil ||sig .SubFilter ==nil {return false ;};return (*sig .Filter =="A\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004d\u0053"||*sig .Filter =="\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065")&&*sig .SubFilter =="\u0061d\u0062e\u002e\u0078\u0035\u0030\u0039.\u0072\u0073a\u005f\u0073\u0068\u0061\u0031";};type docTimeStamp struct{_ed string ;_ede _dd .Hash ;_abf int ;};
|
||||
|
||||
// NewEmptyAdobePKCS7Detached creates a new Adobe.PPKMS/Adobe.PPKLite adbe.pkcs7.detached
|
||||
// signature handler. The generated signature is empty and of size signatureLen.
|
||||
// The signatureLen parameter can be 0 for the signature validation.
|
||||
func NewEmptyAdobePKCS7Detached (signatureLen int )(_c .SignatureHandler ,error ){return &adobePKCS7Detached {_ga :true ,_cg :signatureLen },nil ;};func _gfd (_be _ad .ObjectIdentifier )(_dd .Hash ,error ){switch {case _be .Equal (_ge .OIDDigestAlgorithmSHA1 ),_be .Equal (_ge .OIDDigestAlgorithmECDSASHA1 ),_be .Equal (_ge .OIDDigestAlgorithmDSA ),_be .Equal (_ge .OIDDigestAlgorithmDSASHA1 ),_be .Equal (_ge .OIDEncryptionAlgorithmRSA ):return _dd .SHA1 ,nil ;case _be .Equal (_ge .OIDDigestAlgorithmSHA256 ),_be .Equal (_ge .OIDDigestAlgorithmECDSASHA256 ):return _dd .SHA256 ,nil ;case _be .Equal (_ge .OIDDigestAlgorithmSHA384 ),_be .Equal (_ge .OIDDigestAlgorithmECDSASHA384 ):return _dd .SHA384 ,nil ;case _be .Equal (_ge .OIDDigestAlgorithmSHA512 ),_be .Equal (_ge .OIDDigestAlgorithmECDSASHA512 ):return _dd .SHA512 ,nil ;};return _dd .Hash (0),_ge .ErrUnsupportedAlgorithm ;};
|
||||
func (_ge *adobePKCS7Detached )NewDigest (sig *_fb .PdfSignature )(_fb .Hasher ,error ){return _eb .NewBuffer (nil ),nil ;};
|
||||
@ -9,7 +9,7 @@
|
||||
// Use of this source code is governed by the UniDoc End User License Agreement
|
||||
// terms that can be accessed at https://unidoc.io/eula/
|
||||
|
||||
package pdfutil ;import (_a "github.com/unidoc/unipdf/v3/common";_cd "github.com/unidoc/unipdf/v3/contentstream";_c "github.com/unidoc/unipdf/v3/contentstream/draw";_b "github.com/unidoc/unipdf/v3/model";);
|
||||
package pdfutil ;import (_d "github.com/unidoc/unipdf/v3/common";_gg "github.com/unidoc/unipdf/v3/contentstream";_b "github.com/unidoc/unipdf/v3/contentstream/draw";_g "github.com/unidoc/unipdf/v3/model";);
|
||||
|
||||
// NormalizePage performs the following operations on the passed in page:
|
||||
// - Normalize the page rotation.
|
||||
@ -24,4 +24,4 @@ package pdfutil ;import (_a "github.com/unidoc/unipdf/v3/common";_cd "github.com
|
||||
// The crop box of the page is updated based on the previous operations.
|
||||
// After normalization, the page should look the same if openend using a
|
||||
// PDF viewer.
|
||||
func NormalizePage (page *_b .PdfPage )error {_cc ,_fd :=page .GetMediaBox ();if _fd !=nil {return _fd ;};_e ,_fd :=page .GetContentStreams ();if _fd !=nil {return _fd ;};_fdb :=page .Rotate ;_d :=_fdb !=nil &&*_fdb !=0&&*_fdb %90==0;_cc .Normalize ();_df ,_cdf ,_cg ,_be :=_cc .Llx ,_cc .Lly ,_cc .Width (),_cc .Height ();_g :=_df !=0||_cdf !=0;if !_d &&!_g {return nil ;};_fb :=func (_fbe ,_ab ,_cga float64 )_c .BoundingBox {return _c .Path {Points :[]_c .Point {_c .NewPoint (0,0).Rotate (_cga ),_c .NewPoint (_fbe ,0).Rotate (_cga ),_c .NewPoint (0,_ab ).Rotate (_cga ),_c .NewPoint (_fbe ,_ab ).Rotate (_cga )}}.GetBoundingBox ();};_db :=_cd .NewContentCreator ();var _bg float64 ;if _d {_bg =-float64 (*page .Rotate );_gg :=_fb (_cg ,_be ,_bg );_db .Translate ((_gg .Width -_cg )/2+_cg /2,(_gg .Height -_be )/2+_be /2);_db .RotateDeg (_bg );_db .Translate (-_cg /2,-_be /2);_cg ,_be =_gg .Width ,_gg .Height ;};if _g {_db .Translate (-_df ,-_cdf );};_bed :=_db .Operations ().String ();_e =append ([]string {_bed },_e ...);if _fd =page .SetContentStreams (_e ,nil );_fd !=nil {return _fd ;};*_cc =_b .PdfRectangle {Urx :_cg ,Ury :_be };if _ac :=page .CropBox ;_ac !=nil {_ac .Normalize ();_ga ,_fdbd ,_dfa ,_fg :=_ac .Llx -_df ,_ac .Lly -_cdf ,_ac .Width (),_ac .Height ();if _d {_gc :=_fb (_dfa ,_fg ,_bg );_dfa ,_fg =_gc .Width ,_gc .Height ;};*_ac =_b .PdfRectangle {Llx :_ga ,Lly :_fdbd ,Urx :_ga +_dfa ,Ury :_fdbd +_fg };};_a .Log .Debug ("\u0052\u006f\u0074\u0061\u0074\u0065\u003d\u0025\u0066\u00b0\u0020\u004f\u0070\u0073\u003d%\u0071 \u004d\u0065\u0064\u0069\u0061\u0042\u006f\u0078\u003d\u0025\u002e\u0032\u0066",_bg ,_bed ,_cc );page .Rotate =nil ;return nil ;};
|
||||
func NormalizePage (page *_g .PdfPage )error {_f ,_fb :=page .GetMediaBox ();if _fb !=nil {return _fb ;};_be ,_fb :=page .GetContentStreams ();if _fb !=nil {return _fb ;};_gf :=page .Rotate ;_bg :=_gf !=nil &&*_gf %360!=0&&*_gf %90==0;_f .Normalize ();_ee ,_gge ,_bc ,_dc :=_f .Llx ,_f .Lly ,_f .Width (),_f .Height ();_a :=_ee !=0||_gge !=0;if !_bg &&!_a {return nil ;};_gd :=func (_fc ,_gdd ,_gfd float64 )_b .BoundingBox {return _b .Path {Points :[]_b .Point {_b .NewPoint (0,0).Rotate (_gfd ),_b .NewPoint (_fc ,0).Rotate (_gfd ),_b .NewPoint (0,_gdd ).Rotate (_gfd ),_b .NewPoint (_fc ,_gdd ).Rotate (_gfd )}}.GetBoundingBox ();};_c :=_gg .NewContentCreator ();var _ag float64 ;if _bg {_ag =-float64 (*page .Rotate );_eb :=_gd (_bc ,_dc ,_ag );_c .Translate ((_eb .Width -_bc )/2+_bc /2,(_eb .Height -_dc )/2+_dc /2);_c .RotateDeg (_ag );_c .Translate (-_bc /2,-_dc /2);_bc ,_dc =_eb .Width ,_eb .Height ;};if _a {_c .Translate (-_ee ,-_gge );};_ad :=_c .Operations ().String ();_be =append ([]string {_ad },_be ...);if _fb =page .SetContentStreams (_be ,nil );_fb !=nil {return _fb ;};*_f =_g .PdfRectangle {Urx :_bc ,Ury :_dc };if _dcc :=page .CropBox ;_dcc !=nil {_dcc .Normalize ();_gddg ,_ca ,_cd ,_dd :=_dcc .Llx -_ee ,_dcc .Lly -_gge ,_dcc .Width (),_dcc .Height ();if _bg {_eec :=_gd (_cd ,_dd ,_ag );_cd ,_dd =_eec .Width ,_eec .Height ;};*_dcc =_g .PdfRectangle {Llx :_gddg ,Lly :_ca ,Urx :_gddg +_cd ,Ury :_ca +_dd };};_d .Log .Debug ("\u0052\u006f\u0074\u0061\u0074\u0065\u003d\u0025\u0066\u00b0\u0020\u004f\u0070\u0073\u003d%\u0071 \u004d\u0065\u0064\u0069\u0061\u0042\u006f\u0078\u003d\u0025\u002e\u0032\u0066",_ag ,_ad ,_f );page .Rotate =nil ;return nil ;};
|
||||
150
ps/ps.go
150
ps/ps.go
@ -14,84 +14,46 @@
|
||||
//
|
||||
// Package ps implements various functionalities needed for handling Postscript for PDF uses, in particular
|
||||
// for PDF function type 4.
|
||||
package ps ;import (_c "bufio";_f "bytes";_e "errors";_dc "fmt";_cd "github.com/unidoc/unipdf/v3/common";_dce "github.com/unidoc/unipdf/v3/core";_d "io";_a "math";);
|
||||
|
||||
// PSObjectArrayToFloat64Array converts []PSObject into a []float64 array. Each PSObject must represent a number,
|
||||
// otherwise a ErrTypeCheck error occurs.
|
||||
func PSObjectArrayToFloat64Array (objects []PSObject )([]float64 ,error ){var _fe []float64 ;for _ ,_ae :=range objects {if _ee ,_db :=_ae .(*PSInteger );_db {_fe =append (_fe ,float64 (_ee .Val ));}else if _eeb ,_af :=_ae .(*PSReal );_af {_fe =append (_fe ,_eeb .Val );}else {return nil ,ErrTypeCheck ;};};return _fe ,nil ;};
|
||||
|
||||
// NewPSParser returns a new instance of the PDF Postscript parser from input data.
|
||||
func NewPSParser (content []byte )*PSParser {_cbaa :=PSParser {};_fbg :=_f .NewBuffer (content );_cbaa ._dadg =_c .NewReader (_fbg );return &_cbaa ;};func (_fff *PSOperand )exp (_dbgf *PSStack )error {_ecg ,_aeg :=_dbgf .PopNumberAsFloat64 ();if _aeg !=nil {return _aeg ;};_ebd ,_aeg :=_dbgf .PopNumberAsFloat64 ();if _aeg !=nil {return _aeg ;};if _a .Abs (_ecg )< 1&&_ebd < 0{return ErrUndefinedResult ;};_ggd :=_a .Pow (_ebd ,_ecg );_aeg =_dbgf .Push (MakeReal (_ggd ));return _aeg ;};
|
||||
|
||||
// Exec executes the operand `op` in the state specified by `stack`.
|
||||
func (_cga *PSOperand )Exec (stack *PSStack )error {_abf :=ErrUnsupportedOperand ;switch *_cga {case "\u0061\u0062\u0073":_abf =_cga .abs (stack );case "\u0061\u0064\u0064":_abf =_cga .add (stack );case "\u0061\u006e\u0064":_abf =_cga .and (stack );case "\u0061\u0074\u0061\u006e":_abf =_cga .atan (stack );case "\u0062\u0069\u0074\u0073\u0068\u0069\u0066\u0074":_abf =_cga .bitshift (stack );case "\u0063e\u0069\u006c\u0069\u006e\u0067":_abf =_cga .ceiling (stack );case "\u0063\u006f\u0070\u0079":_abf =_cga .copy (stack );case "\u0063\u006f\u0073":_abf =_cga .cos (stack );case "\u0063\u0076\u0069":_abf =_cga .cvi (stack );case "\u0063\u0076\u0072":_abf =_cga .cvr (stack );case "\u0064\u0069\u0076":_abf =_cga .div (stack );case "\u0064\u0075\u0070":_abf =_cga .dup (stack );case "\u0065\u0071":_abf =_cga .eq (stack );case "\u0065\u0078\u0063\u0068":_abf =_cga .exch (stack );case "\u0065\u0078\u0070":_abf =_cga .exp (stack );case "\u0066\u006c\u006fo\u0072":_abf =_cga .floor (stack );case "\u0067\u0065":_abf =_cga .ge (stack );case "\u0067\u0074":_abf =_cga .gt (stack );case "\u0069\u0064\u0069\u0076":_abf =_cga .idiv (stack );case "\u0069\u0066":_abf =_cga .ifCondition (stack );case "\u0069\u0066\u0065\u006c\u0073\u0065":_abf =_cga .ifelse (stack );case "\u0069\u006e\u0064e\u0078":_abf =_cga .index (stack );case "\u006c\u0065":_abf =_cga .le (stack );case "\u006c\u006f\u0067":_abf =_cga .log (stack );case "\u006c\u006e":_abf =_cga .ln (stack );case "\u006c\u0074":_abf =_cga .lt (stack );case "\u006d\u006f\u0064":_abf =_cga .mod (stack );case "\u006d\u0075\u006c":_abf =_cga .mul (stack );case "\u006e\u0065":_abf =_cga .ne (stack );case "\u006e\u0065\u0067":_abf =_cga .neg (stack );case "\u006e\u006f\u0074":_abf =_cga .not (stack );case "\u006f\u0072":_abf =_cga .or (stack );case "\u0070\u006f\u0070":_abf =_cga .pop (stack );case "\u0072\u006f\u0075n\u0064":_abf =_cga .round (stack );case "\u0072\u006f\u006c\u006c":_abf =_cga .roll (stack );case "\u0073\u0069\u006e":_abf =_cga .sin (stack );case "\u0073\u0071\u0072\u0074":_abf =_cga .sqrt (stack );case "\u0073\u0075\u0062":_abf =_cga .sub (stack );case "\u0074\u0072\u0075\u006e\u0063\u0061\u0074\u0065":_abf =_cga .truncate (stack );case "\u0078\u006f\u0072":_abf =_cga .xor (stack );};return _abf ;};func (_bce *PSOperand )dup (_dcf *PSStack )error {_agd ,_ebca :=_dcf .Pop ();if _ebca !=nil {return _ebca ;};_ebca =_dcf .Push (_agd );if _ebca !=nil {return _ebca ;};_ebca =_dcf .Push (_agd .Duplicate ());return _ebca ;};func (_eb *PSOperand )String ()string {return _dc .Sprintf ("\u0025\u0073",*_eb )};func (_ega *PSOperand )eq (_eeg *PSStack )error {_bgf ,_adee :=_eeg .Pop ();if _adee !=nil {return _adee ;};_fgge ,_adee :=_eeg .Pop ();if _adee !=nil {return _adee ;};_eea ,_da :=_bgf .(*PSBoolean );_fec ,_dad :=_fgge .(*PSBoolean );if _da ||_dad {var _fbe error ;if _da &&_dad {_fbe =_eeg .Push (MakeBool (_eea .Val ==_fec .Val ));}else {_fbe =_eeg .Push (MakeBool (false ));};return _fbe ;};var _bcb float64 ;var _gcd float64 ;if _bd ,_bcgc :=_bgf .(*PSInteger );_bcgc {_bcb =float64 (_bd .Val );}else if _gbd ,_gab :=_bgf .(*PSReal );_gab {_bcb =_gbd .Val ;}else {return ErrTypeCheck ;};if _egbg ,_fgf :=_fgge .(*PSInteger );_fgf {_gcd =float64 (_egbg .Val );}else if _ceg ,_gdb :=_fgge .(*PSReal );_gdb {_gcd =_ceg .Val ;}else {return ErrTypeCheck ;};if _a .Abs (_gcd -_bcb )< _g {_adee =_eeg .Push (MakeBool (true ));}else {_adee =_eeg .Push (MakeBool (false ));};return _adee ;};func (_edga *PSParser )parseNumber ()(PSObject ,error ){_ggbd ,_bdcc :=_dce .ParseNumber (_edga ._dadg );if _bdcc !=nil {return nil ,_bdcc ;};switch _bef :=_ggbd .(type ){case *_dce .PdfObjectFloat :return MakeReal (float64 (*_bef )),nil ;case *_dce .PdfObjectInteger :return MakeInteger (int (*_bef )),nil ;};return nil ,_dc .Errorf ("\u0075n\u0068\u0061\u006e\u0064\u006c\u0065\u0064\u0020\u006e\u0075\u006db\u0065\u0072\u0020\u0074\u0079\u0070\u0065\u0020\u0025\u0054",_ggbd );};
|
||||
|
||||
// PSOperand represents a Postscript operand (text string).
|
||||
type PSOperand string ;func (_ff *PSReal )Duplicate ()PSObject {_fc :=PSReal {};_fc .Val =_ff .Val ;return &_fc };func (_cbd *PSProgram )String ()string {_cda :="\u007b\u0020";for _ ,_bb :=range *_cbd {_cda +=_bb .String ();_cda +="\u0020";};_cda +="\u007d";return _cda ;};func (_eed *PSOperand )floor (_cceb *PSStack )error {_bbd ,_gga :=_cceb .Pop ();if _gga !=nil {return _gga ;};if _ecdg ,_fcfgd :=_bbd .(*PSReal );_fcfgd {_gga =_cceb .Push (MakeReal (_a .Floor (_ecdg .Val )));}else if _caa ,_abg :=_bbd .(*PSInteger );_abg {_gga =_cceb .Push (MakeInteger (_caa .Val ));}else {return ErrTypeCheck ;};return _gga ;};func (_baae *PSOperand )le (_cgac *PSStack )error {_gae ,_abb :=_cgac .PopNumberAsFloat64 ();if _abb !=nil {return _abb ;};_bgc ,_abb :=_cgac .PopNumberAsFloat64 ();if _abb !=nil {return _abb ;};if _a .Abs (_bgc -_gae )< _g {_fgb :=_cgac .Push (MakeBool (true ));return _fgb ;}else if _bgc < _gae {_cfbe :=_cgac .Push (MakeBool (true ));return _cfbe ;}else {_bdd :=_cgac .Push (MakeBool (false ));return _bdd ;};};var ErrStackOverflow =_e .New ("\u0073\u0074\u0061\u0063\u006b\u0020\u006f\u0076\u0065r\u0066\u006c\u006f\u0077");func (_efeg *PSOperand )or (_ddec *PSStack )error {_ffee ,_bdda :=_ddec .Pop ();if _bdda !=nil {return _bdda ;};_cdf ,_bdda :=_ddec .Pop ();if _bdda !=nil {return _bdda ;};if _abbf ,_faf :=_ffee .(*PSBoolean );_faf {_cfg ,_ecab :=_cdf .(*PSBoolean );if !_ecab {return ErrTypeCheck ;};_bdda =_ddec .Push (MakeBool (_abbf .Val ||_cfg .Val ));return _bdda ;};if _efa ,_gdcb :=_ffee .(*PSInteger );_gdcb {_cdfe ,_cegf :=_cdf .(*PSInteger );if !_cegf {return ErrTypeCheck ;};_bdda =_ddec .Push (MakeInteger (_efa .Val |_cdfe .Val ));return _bdda ;};return ErrTypeCheck ;};func (_gbf *PSOperand )not (_afd *PSStack )error {_bbeg ,_dde :=_afd .Pop ();if _dde !=nil {return _dde ;};if _efc ,_ffa :=_bbeg .(*PSBoolean );_ffa {_dde =_afd .Push (MakeBool (!_efc .Val ));return _dde ;}else if _ccfg ,_ceffd :=_bbeg .(*PSInteger );_ceffd {_dde =_afd .Push (MakeInteger (^_ccfg .Val ));return _dde ;}else {return ErrTypeCheck ;};};func (_cb *PSBoolean )String ()string {return _dc .Sprintf ("\u0025\u0076",_cb .Val )};func (_ccf *PSOperand )cvr (_fcfg *PSStack )error {_ecf ,_gbg :=_fcfg .Pop ();if _gbg !=nil {return _gbg ;};if _dfb ,_abfc :=_ecf .(*PSReal );_abfc {_gbg =_fcfg .Push (MakeReal (_dfb .Val ));}else if _cfae ,_aac :=_ecf .(*PSInteger );_aac {_gbg =_fcfg .Push (MakeReal (float64 (_cfae .Val )));}else {return ErrTypeCheck ;};return _gbg ;};var ErrTypeCheck =_e .New ("\u0074\u0079p\u0065\u0020\u0063h\u0065\u0063\u006b\u0020\u0065\u0072\u0072\u006f\u0072");func (_gcgb *PSParser )parseFunction ()(*PSProgram ,error ){_afa ,_ :=_gcgb ._dadg .ReadByte ();if _afa !='{'{return nil ,_e .New ("\u0069\u006ev\u0061\u006c\u0069d\u0020\u0066\u0075\u006e\u0063\u0074\u0069\u006f\u006e");};_eada :=NewPSProgram ();for {_gcgb .skipSpaces ();_gegd ,_bgfg :=_gcgb ._dadg .Peek (2);if _bgfg !=nil {if _bgfg ==_d .EOF {break ;};return nil ,_bgfg ;};_cd .Log .Trace ("\u0050e\u0065k\u0020\u0073\u0074\u0072\u0069\u006e\u0067\u003a\u0020\u0025\u0073",string (_gegd ));if _gegd [0]=='}'{_cd .Log .Trace ("\u0045\u004f\u0046 \u0066\u0075\u006e\u0063\u0074\u0069\u006f\u006e");_gcgb ._dadg .ReadByte ();break ;}else if _gegd [0]=='{'{_cd .Log .Trace ("\u0046u\u006e\u0063\u0074\u0069\u006f\u006e!");_gdea ,_dcc :=_gcgb .parseFunction ();if _dcc !=nil {return nil ,_dcc ;};_eada .Append (_gdea );}else if _dce .IsDecimalDigit (_gegd [0])||(_gegd [0]=='-'&&_dce .IsDecimalDigit (_gegd [1])){_cd .Log .Trace ("\u002d>\u004e\u0075\u006d\u0062\u0065\u0072!");_ebag ,_deca :=_gcgb .parseNumber ();if _deca !=nil {return nil ,_deca ;};_eada .Append (_ebag );}else {_cd .Log .Trace ("\u002d>\u004fp\u0065\u0072\u0061\u006e\u0064 \u006f\u0072 \u0062\u006f\u006f\u006c\u003f");_gegd ,_ =_gcgb ._dadg .Peek (5);_fbaa :=string (_gegd );_cd .Log .Trace ("\u0050\u0065\u0065k\u0020\u0073\u0074\u0072\u003a\u0020\u0025\u0073",_fbaa );if (len (_fbaa )> 4)&&(_fbaa [:5]=="\u0066\u0061\u006cs\u0065"){_gecc ,_acf :=_gcgb .parseBool ();if _acf !=nil {return nil ,_acf ;};_eada .Append (_gecc );}else if (len (_fbaa )> 3)&&(_fbaa [:4]=="\u0074\u0072\u0075\u0065"){_ece ,_dace :=_gcgb .parseBool ();if _dace !=nil {return nil ,_dace ;};_eada .Append (_ece );}else {_abbd ,_ceb :=_gcgb .parseOperand ();if _ceb !=nil {return nil ,_ceb ;};_eada .Append (_abbd );};};};return _eada ,nil ;};
|
||||
|
||||
// Execute executes the program for an input parameters `objects` and returns a slice of output objects.
|
||||
func (_aef *PSExecutor )Execute (objects []PSObject )([]PSObject ,error ){for _ ,_ba :=range objects {_gg :=_aef .Stack .Push (_ba );if _gg !=nil {return nil ,_gg ;};};_fee :=_aef ._gc .Exec (_aef .Stack );if _fee !=nil {_cd .Log .Debug ("\u0045x\u0065c\u0020\u0066\u0061\u0069\u006c\u0065\u0064\u003a\u0020\u0025\u0076",_fee );return nil ,_fee ;};_cea :=[]PSObject (*_aef .Stack );_aef .Stack .Empty ();return _cea ,nil ;};func (_bgff *PSOperand )idiv (_cac *PSStack )error {_afg ,_eab :=_cac .Pop ();if _eab !=nil {return _eab ;};_dcg ,_eab :=_cac .Pop ();if _eab !=nil {return _eab ;};_eegc ,_cgf :=_afg .(*PSInteger );if !_cgf {return ErrTypeCheck ;};if _eegc .Val ==0{return ErrUndefinedResult ;};_gdg ,_cgf :=_dcg .(*PSInteger );if !_cgf {return ErrTypeCheck ;};_gcge :=_gdg .Val /_eegc .Val ;_eab =_cac .Push (MakeInteger (_gcge ));return _eab ;};func (_dgf *PSOperand )abs (_dbg *PSStack )error {_fb ,_eg :=_dbg .Pop ();if _eg !=nil {return _eg ;};if _dgfc ,_bf :=_fb .(*PSReal );_bf {_ebc :=_dgfc .Val ;if _ebc < 0{_eg =_dbg .Push (MakeReal (-_ebc ));}else {_eg =_dbg .Push (MakeReal (_ebc ));};}else if _egf ,_bea :=_fb .(*PSInteger );_bea {_ceac :=_egf .Val ;if _ceac < 0{_eg =_dbg .Push (MakeInteger (-_ceac ));}else {_eg =_dbg .Push (MakeInteger (_ceac ));};}else {return ErrTypeCheck ;};return _eg ;};func (_cce *PSOperand )atan (_ede *PSStack )error {_fdcc ,_dbea :=_ede .PopNumberAsFloat64 ();if _dbea !=nil {return _dbea ;};_ea ,_dbea :=_ede .PopNumberAsFloat64 ();if _dbea !=nil {return _dbea ;};if _fdcc ==0{var _gca error ;if _ea < 0{_gca =_ede .Push (MakeReal (270));}else {_gca =_ede .Push (MakeReal (90));};return _gca ;};_egc :=_ea /_fdcc ;_feb :=_a .Atan (_egc )*180/_a .Pi ;_dbea =_ede .Push (MakeReal (_feb ));return _dbea ;};func (_cdce *PSOperand )cos (_ebf *PSStack )error {_ag ,_abd :=_ebf .PopNumberAsFloat64 ();if _abd !=nil {return _abd ;};_febg :=_a .Cos (_ag *_a .Pi /180.0);_abd =_ebf .Push (MakeReal (_febg ));return _abd ;};
|
||||
|
||||
// PSExecutor has its own execution stack and is used to executre a PS routine (program).
|
||||
type PSExecutor struct{Stack *PSStack ;_gc *PSProgram ;};func (_gcb *PSReal )String ()string {return _dc .Sprintf ("\u0025\u002e\u0035\u0066",_gcb .Val )};
|
||||
|
||||
// MakeInteger returns a new PSInteger object initialized with `val`.
|
||||
func MakeInteger (val int )*PSInteger {_babb :=PSInteger {};_babb .Val =val ;return &_babb };func (_dbf *PSParser )skipSpaces ()(int ,error ){_gcc :=0;for {_fggc ,_ceea :=_dbf ._dadg .Peek (1);if _ceea !=nil {return 0,_ceea ;};if _dce .IsWhiteSpace (_fggc [0]){_dbf ._dadg .ReadByte ();_gcc ++;}else {break ;};};return _gcc ,nil ;};func (_eff *PSParser )parseOperand ()(*PSOperand ,error ){var _acgg []byte ;for {_gbged ,_dga :=_eff ._dadg .Peek (1);if _dga !=nil {if _dga ==_d .EOF {break ;};return nil ,_dga ;};if _dce .IsDelimiter (_gbged [0]){break ;};if _dce .IsWhiteSpace (_gbged [0]){break ;};_dgbd ,_ :=_eff ._dadg .ReadByte ();_acgg =append (_acgg ,_dgbd );};if len (_acgg )==0{return nil ,_e .New ("\u0069\u006e\u0076al\u0069\u0064\u0020\u006f\u0070\u0065\u0072\u0061\u006e\u0064\u0020\u0028\u0065\u006d\u0070\u0074\u0079\u0029");};return MakeOperand (string (_acgg )),nil ;};func (_cca *PSOperand )truncate (_gcea *PSStack )error {_cfe ,_dcef :=_gcea .Pop ();if _dcef !=nil {return _dcef ;};if _cde ,_bbcf :=_cfe .(*PSReal );_bbcf {_eef :=int (_cde .Val );_dcef =_gcea .Push (MakeReal (float64 (_eef )));}else if _dafg ,_cfca :=_cfe .(*PSInteger );_cfca {_dcef =_gcea .Push (MakeInteger (_dafg .Val ));}else {return ErrTypeCheck ;};return _dcef ;};func (_feec *PSBoolean )DebugString ()string {return _dc .Sprintf ("\u0062o\u006f\u006c\u003a\u0025\u0076",_feec .Val );};func (_aa *PSOperand )Duplicate ()PSObject {_fgg :=*_aa ;return &_fgg };func (_cfa *PSOperand )ceiling (_dced *PSStack )error {_edf ,_cbde :=_dced .Pop ();if _cbde !=nil {return _cbde ;};if _cba ,_edec :=_edf .(*PSReal );_edec {_cbde =_dced .Push (MakeReal (_a .Ceil (_cba .Val )));}else if _dba ,_fgd :=_edf .(*PSInteger );_fgd {_cbde =_dced .Push (MakeInteger (_dba .Val ));}else {_cbde =ErrTypeCheck ;};return _cbde ;};var ErrUnsupportedOperand =_e .New ("\u0075\u006e\u0073\u0075pp\u006f\u0072\u0074\u0065\u0064\u0020\u006f\u0070\u0065\u0072\u0061\u006e\u0064");
|
||||
|
||||
// Parse parses the postscript and store as a program that can be executed.
|
||||
func (_agbef *PSParser )Parse ()(*PSProgram ,error ){_agbef .skipSpaces ();_gbfg ,_ffb :=_agbef ._dadg .Peek (2);if _ffb !=nil {return nil ,_ffb ;};if _gbfg [0]!='{'{return nil ,_e .New ("\u0069\u006e\u0076\u0061\u006c\u0069\u0064\u0020\u0050\u0053\u0020\u0050\u0072\u006f\u0067\u0072\u0061\u006d\u0020\u006e\u006f\u0074\u0020\u0073t\u0061\u0072\u0074\u0069\u006eg\u0020\u0077i\u0074\u0068\u0020\u007b");};_cab ,_ffb :=_agbef .parseFunction ();if _ffb !=nil &&_ffb !=_d .EOF {return nil ,_ffb ;};return _cab ,_ffb ;};func (_bg *PSReal )DebugString ()string {return _dc .Sprintf ("\u0072e\u0061\u006c\u003a\u0025\u002e\u0035f",_bg .Val );};const _g =0.000001;
|
||||
|
||||
// NewPSProgram returns an empty, initialized PSProgram.
|
||||
func NewPSProgram ()*PSProgram {return &PSProgram {}};func (_be *PSOperand )DebugString ()string {return _dc .Sprintf ("\u006fp\u003a\u0027\u0025\u0073\u0027",*_be );};func (_fac *PSOperand )ln (_ecda *PSStack )error {_cgcf ,_cbag :=_ecda .PopNumberAsFloat64 ();if _cbag !=nil {return _cbag ;};_bdc :=_a .Log (_cgcf );_cbag =_ecda .Push (MakeReal (_bdc ));return _cbag ;};func (_eega *PSOperand )neg (_daed *PSStack )error {_ccdb ,_ead :=_daed .Pop ();if _ead !=nil {return _ead ;};if _bfba ,_fbb :=_ccdb .(*PSReal );_fbb {_ead =_daed .Push (MakeReal (-_bfba .Val ));return _ead ;}else if _dbd ,_ecgg :=_ccdb .(*PSInteger );_ecgg {_ead =_daed .Push (MakeInteger (-_dbd .Val ));return _ead ;}else {return ErrTypeCheck ;};};func (_fdba *PSOperand )ge (_dff *PSStack )error {_ded ,_fda :=_dff .PopNumberAsFloat64 ();if _fda !=nil {return _fda ;};_ddb ,_fda :=_dff .PopNumberAsFloat64 ();if _fda !=nil {return _fda ;};if _a .Abs (_ddb -_ded )< _g {_gbbd :=_dff .Push (MakeBool (true ));return _gbbd ;}else if _ddb > _ded {_dfe :=_dff .Push (MakeBool (true ));return _dfe ;}else {_egff :=_dff .Push (MakeBool (false ));return _egff ;};};func (_bab *PSOperand )exch (_adb *PSStack )error {_aec ,_cfb :=_adb .Pop ();if _cfb !=nil {return _cfb ;};_eba ,_cfb :=_adb .Pop ();if _cfb !=nil {return _cfb ;};_cfb =_adb .Push (_aec );if _cfb !=nil {return _cfb ;};_cfb =_adb .Push (_eba );return _cfb ;};func (_fefe *PSOperand )sqrt (_daca *PSStack )error {_edg ,_ebg :=_daca .PopNumberAsFloat64 ();if _ebg !=nil {return _ebg ;};if _edg < 0{return ErrRangeCheck ;};_edb :=_a .Sqrt (_edg );_ebg =_daca .Push (MakeReal (_edb ));return _ebg ;};func (_dbc *PSOperand )roll (_ebec *PSStack )error {_faaa ,_facg :=_ebec .Pop ();if _facg !=nil {return _facg ;};_beae ,_facg :=_ebec .Pop ();if _facg !=nil {return _facg ;};_gff ,_ffc :=_faaa .(*PSInteger );if !_ffc {return ErrTypeCheck ;};_dca ,_ffc :=_beae .(*PSInteger );if !_ffc {return ErrTypeCheck ;};if _dca .Val < 0{return ErrRangeCheck ;};if _dca .Val ==0||_dca .Val ==1{return nil ;};if _dca .Val > len (*_ebec ){return ErrStackUnderflow ;};for _bec :=0;_bec < _dgad (_gff .Val );_bec ++{var _ggb []PSObject ;_ggb =(*_ebec )[len (*_ebec )-(_dca .Val ):len (*_ebec )];if _gff .Val > 0{_gba :=_ggb [len (_ggb )-1];_ggb =append ([]PSObject {_gba },_ggb [0:len (_ggb )-1]...);}else {_cbab :=_ggb [len (_ggb )-_dca .Val ];_ggb =append (_ggb [1:],_cbab );};_bfaf :=append ((*_ebec )[0:len (*_ebec )-_dca .Val ],_ggb ...);_ebec =&_bfaf ;};return nil ;};func (_efegb *PSOperand )sin (_ffec *PSStack )error {_cdaa ,_adbf :=_ffec .PopNumberAsFloat64 ();if _adbf !=nil {return _adbf ;};_ffca :=_a .Sin (_cdaa *_a .Pi /180.0);_adbf =_ffec .Push (MakeReal (_ffca ));return _adbf ;};func (_aaa *PSOperand )ifCondition (_efg *PSStack )error {_add ,_ggec :=_efg .Pop ();if _ggec !=nil {return _ggec ;};_gee ,_ggec :=_efg .Pop ();if _ggec !=nil {return _ggec ;};_bgb ,_daf :=_add .(*PSProgram );if !_daf {return ErrTypeCheck ;};_gfb ,_daf :=_gee .(*PSBoolean );if !_daf {return ErrTypeCheck ;};if _gfb .Val {_fbdg :=_bgb .Exec (_efg );return _fbdg ;};return nil ;};
|
||||
|
||||
// PSStack defines a stack of PSObjects. PSObjects can be pushed on or pull from the stack.
|
||||
type PSStack []PSObject ;
|
||||
|
||||
// PSBoolean represents a boolean value.
|
||||
type PSBoolean struct{Val bool ;};func (_bebb *PSOperand )log (_bagd *PSStack )error {_gcbf ,_faec :=_bagd .PopNumberAsFloat64 ();if _faec !=nil {return _faec ;};_bbg :=_a .Log10 (_gcbf );_faec =_bagd .Push (MakeReal (_bbg ));return _faec ;};
|
||||
|
||||
// MakeOperand returns a new PSOperand object based on string `val`.
|
||||
func MakeOperand (val string )*PSOperand {_ggbf :=PSOperand (val );return &_ggbf };var ErrUndefinedResult =_e .New ("\u0075\u006e\u0064\u0065fi\u006e\u0065\u0064\u0020\u0072\u0065\u0073\u0075\u006c\u0074\u0020\u0065\u0072\u0072o\u0072");func (_gdf *PSOperand )copy (_edd *PSStack )error {_baa ,_ebbd :=_edd .PopInteger ();if _ebbd !=nil {return _ebbd ;};if _baa < 0{return ErrRangeCheck ;};if _baa > len (*_edd ){return ErrRangeCheck ;};*_edd =append (*_edd ,(*_edd )[len (*_edd )-_baa :]...);return nil ;};func (_eee *PSInteger )Duplicate ()PSObject {_ga :=PSInteger {};_ga .Val =_eee .Val ;return &_ga };func (_fg *PSInteger )String ()string {return _dc .Sprintf ("\u0025\u0064",_fg .Val )};
|
||||
|
||||
// MakeBool returns a new PSBoolean object initialized with `val`.
|
||||
func MakeBool (val bool )*PSBoolean {_egg :=PSBoolean {};_egg .Val =val ;return &_egg };func (_gfd *PSOperand )div (_agfd *PSStack )error {_ffe ,_cec :=_agfd .Pop ();if _cec !=nil {return _cec ;};_deee ,_cec :=_agfd .Pop ();if _cec !=nil {return _cec ;};_gbgb ,_baf :=_ffe .(*PSReal );_aeb ,_cefb :=_ffe .(*PSInteger );if !_baf &&!_cefb {return ErrTypeCheck ;};if _baf &&_gbgb .Val ==0{return ErrUndefinedResult ;};if _cefb &&_aeb .Val ==0{return ErrUndefinedResult ;};_fbda ,_cad :=_deee .(*PSReal );_ac ,_agb :=_deee .(*PSInteger );if !_cad &&!_agb {return ErrTypeCheck ;};var _fcaf float64 =0;if _cad {_fcaf =_fbda .Val ;}else {_fcaf =float64 (_ac .Val );};if _baf {_fcaf /=_gbgb .Val ;}else {_fcaf /=float64 (_aeb .Val );};_cec =_agfd .Push (MakeReal (_fcaf ));return _cec ;};func (_ed *PSOperand )and (_df *PSStack )error {_ecc ,_afc :=_df .Pop ();if _afc !=nil {return _afc ;};_dee ,_afc :=_df .Pop ();if _afc !=nil {return _afc ;};if _bc ,_ged :=_ecc .(*PSBoolean );_ged {_fdc ,_geg :=_dee .(*PSBoolean );if !_geg {return ErrTypeCheck ;};_afc =_df .Push (MakeBool (_bc .Val &&_fdc .Val ));return _afc ;};if _ebb ,_ca :=_ecc .(*PSInteger );_ca {_cc ,_fcf :=_dee .(*PSInteger );if !_fcf {return ErrTypeCheck ;};_afc =_df .Push (MakeInteger (_ebb .Val &_cc .Val ));return _afc ;};return ErrTypeCheck ;};func (_bgfd *PSOperand )mod (_dec *PSStack )error {_bfa ,_bdba :=_dec .Pop ();if _bdba !=nil {return _bdba ;};_gbe ,_bdba :=_dec .Pop ();if _bdba !=nil {return _bdba ;};_ecdb ,_gbc :=_bfa .(*PSInteger );if !_gbc {return ErrTypeCheck ;};if _ecdb .Val ==0{return ErrUndefinedResult ;};_bfag ,_gbc :=_gbe .(*PSInteger );if !_gbc {return ErrTypeCheck ;};_caad :=_bfag .Val %_ecdb .Val ;_bdba =_dec .Push (MakeInteger (_caad ));return _bdba ;};func (_bac *PSBoolean )Duplicate ()PSObject {_cg :=PSBoolean {};_cg .Val =_bac .Val ;return &_cg };
|
||||
|
||||
// Append appends an object to the PSProgram.
|
||||
func (_fd *PSProgram )Append (obj PSObject ){*_fd =append (*_fd ,obj )};func (_gce *PSInteger )DebugString ()string {return _dc .Sprintf ("\u0069\u006e\u0074\u003a\u0025\u0064",_gce .Val );};func (_ffad *PSOperand )round (_ecae *PSStack )error {_abe ,_fdccf :=_ecae .Pop ();if _fdccf !=nil {return _fdccf ;};if _fbdc ,_bed :=_abe .(*PSReal );_bed {_fdccf =_ecae .Push (MakeReal (_a .Floor (_fbdc .Val +0.5)));}else if _bdbf ,_cead :=_abe .(*PSInteger );_cead {_fdccf =_ecae .Push (MakeInteger (_bdbf .Val ));}else {return ErrTypeCheck ;};return _fdccf ;};func (_gbge *PSOperand )index (_fae *PSStack )error {_ace ,_cfc :=_fae .Pop ();if _cfc !=nil {return _cfc ;};_fcad ,_gag :=_ace .(*PSInteger );if !_gag {return ErrTypeCheck ;};if _fcad .Val < 0{return ErrRangeCheck ;};if _fcad .Val > len (*_fae )-1{return ErrStackUnderflow ;};_bag :=(*_fae )[len (*_fae )-1-_fcad .Val ];_cfc =_fae .Push (_bag .Duplicate ());return _cfc ;};func (_bae *PSOperand )pop (_bba *PSStack )error {_ ,_ggae :=_bba .Pop ();if _ggae !=nil {return _ggae ;};return nil ;};func _dgad (_acd int )int {if _acd < 0{return -_acd ;};return _acd ;};
|
||||
|
||||
// Push pushes an object on top of the stack.
|
||||
func (_bfc *PSStack )Push (obj PSObject )error {if len (*_bfc )> 100{return ErrStackOverflow ;};*_bfc =append (*_bfc ,obj );return nil ;};
|
||||
|
||||
// PSReal represents a real number.
|
||||
type PSReal struct{Val float64 ;};
|
||||
|
||||
// PSInteger represents an integer.
|
||||
type PSInteger struct{Val int ;};
|
||||
package ps ;import (_ee "bufio";_e "bytes";_df "errors";_b "fmt";_dc "github.com/unidoc/unipdf/v3/common";_ba "github.com/unidoc/unipdf/v3/core";_c "io";_ca "math";);
|
||||
|
||||
// PopInteger specificially pops an integer from the top of the stack, returning the value as an int.
|
||||
func (_fecf *PSStack )PopInteger ()(int ,error ){_adda ,_ggeg :=_fecf .Pop ();if _ggeg !=nil {return 0,_ggeg ;};if _ddgc ,_eag :=_adda .(*PSInteger );_eag {return _ddgc .Val ,nil ;};return 0,ErrTypeCheck ;};
|
||||
func (_bfdb *PSStack )PopInteger ()(int ,error ){_acb ,_gfea :=_bfdb .Pop ();if _gfea !=nil {return 0,_gfea ;};if _eeg ,_cdcd :=_acb .(*PSInteger );_cdcd {return _eeg .Val ,nil ;};return 0,ErrTypeCheck ;};func (_ge *PSReal )Duplicate ()PSObject {_egc :=PSReal {};_egc .Val =_ge .Val ;return &_egc };
|
||||
|
||||
// PSProgram defines a Postscript program which is a series of PS objects (arguments, commands, programs etc).
|
||||
type PSProgram []PSObject ;
|
||||
// PSReal represents a real number.
|
||||
type PSReal struct{Val float64 ;};func (_baeb *PSOperand )xor (_afcb *PSStack )error {_cfgd ,_gbg :=_afcb .Pop ();if _gbg !=nil {return _gbg ;};_fead ,_gbg :=_afcb .Pop ();if _gbg !=nil {return _gbg ;};if _fefg ,_fee :=_cfgd .(*PSBoolean );_fee {_eeb ,_ffed :=_fead .(*PSBoolean );if !_ffed {return ErrTypeCheck ;};_gbg =_afcb .Push (MakeBool (_fefg .Val !=_eeb .Val ));return _gbg ;};if _fce ,_dfgd :=_cfgd .(*PSInteger );_dfgd {_dcdag ,_bbcf :=_fead .(*PSInteger );if !_bbcf {return ErrTypeCheck ;};_gbg =_afcb .Push (MakeInteger (_fce .Val ^_dcdag .Val ));return _gbg ;};return ErrTypeCheck ;};
|
||||
|
||||
// String returns a string representation of the stack.
|
||||
func (_dgbcd *PSStack )String ()string {_dgfe :="\u005b\u0020";for _ ,_gac :=range *_dgbcd {_dgfe +=_gac .String ();_dgfe +="\u0020";};_dgfe +="\u005d";return _dgfe ;};func (_deb *PSOperand )xor (_cee *PSStack )error {_gbbb ,_bddc :=_cee .Pop ();if _bddc !=nil {return _bddc ;};_beg ,_bddc :=_cee .Pop ();if _bddc !=nil {return _bddc ;};if _fea ,_aae :=_gbbb .(*PSBoolean );_aae {_afcg ,_deg :=_beg .(*PSBoolean );if !_deg {return ErrTypeCheck ;};_bddc =_cee .Push (MakeBool (_fea .Val !=_afcg .Val ));return _bddc ;};if _fdbe ,_agbe :=_gbbb .(*PSInteger );_agbe {_edgc ,_ccg :=_beg .(*PSInteger );if !_ccg {return ErrTypeCheck ;};_bddc =_cee .Push (MakeInteger (_fdbe .Val ^_edgc .Val ));return _bddc ;};return ErrTypeCheck ;};func (_fa *PSProgram )DebugString ()string {_gf :="\u007b\u0020";for _ ,_fge :=range *_fa {_gf +=_fge .DebugString ();_gf +="\u0020";};_gf +="\u007d";return _gf ;};func (_gde *PSOperand )add (_gge *PSStack )error {_ad ,_dd :=_gge .Pop ();if _dd !=nil {return _dd ;};_gcg ,_dd :=_gge .Pop ();if _dd !=nil {return _dd ;};_gcef ,_gb :=_ad .(*PSReal );_cgdc ,_fca :=_ad .(*PSInteger );if !_gb &&!_fca {return ErrTypeCheck ;};_gea ,_aefa :=_gcg .(*PSReal );_bbb ,_dge :=_gcg .(*PSInteger );if !_aefa &&!_dge {return ErrTypeCheck ;};if _fca &&_dge {_bbc :=_cgdc .Val +_bbb .Val ;_de :=_gge .Push (MakeInteger (_bbc ));return _de ;};var _eebb float64 =0;if _gb {_eebb =_gcef .Val ;}else {_eebb =float64 (_cgdc .Val );};if _aefa {_eebb +=_gea .Val ;}else {_eebb +=float64 (_bbb .Val );};_dd =_gge .Push (MakeReal (_eebb ));return _dd ;};
|
||||
|
||||
// Empty empties the stack.
|
||||
func (_ddg *PSStack )Empty (){*_ddg =[]PSObject {}};
|
||||
// PSOperand represents a Postscript operand (text string).
|
||||
type PSOperand string ;func (_bafg *PSOperand )neg (_bad *PSStack )error {_ffb ,_fbcf :=_bad .Pop ();if _fbcf !=nil {return _fbcf ;};if _bace ,_agaa :=_ffb .(*PSReal );_agaa {_fbcf =_bad .Push (MakeReal (-_bace .Val ));return _fbcf ;}else if _bcad ,_bcee :=_ffb .(*PSInteger );_bcee {_fbcf =_bad .Push (MakeInteger (-_bcad .Val ));return _fbcf ;}else {return ErrTypeCheck ;};};
|
||||
|
||||
// NewPSExecutor returns an initialized PSExecutor for an input `program`.
|
||||
func NewPSExecutor (program *PSProgram )*PSExecutor {_ge :=&PSExecutor {};_ge .Stack =NewPSStack ();_ge ._gc =program ;return _ge ;};
|
||||
func NewPSExecutor (program *PSProgram )*PSExecutor {_a :=&PSExecutor {};_a .Stack =NewPSStack ();_a ._f =program ;return _a ;};func (_cac *PSInteger )String ()string {return _b .Sprintf ("\u0025\u0064",_cac .Val )};func (_ab *PSOperand )DebugString ()string {return _b .Sprintf ("\u006fp\u003a\u0027\u0025\u0073\u0027",*_ab );};func (_bcgd *PSOperand )idiv (_gda *PSStack )error {_ada ,_affd :=_gda .Pop ();if _affd !=nil {return _affd ;};_ccc ,_affd :=_gda .Pop ();if _affd !=nil {return _affd ;};_febd ,_fdf :=_ada .(*PSInteger );if !_fdf {return ErrTypeCheck ;};if _febd .Val ==0{return ErrUndefinedResult ;};_ccged ,_fdf :=_ccc .(*PSInteger );if !_fdf {return ErrTypeCheck ;};_ceae :=_ccged .Val /_febd .Val ;_affd =_gda .Push (MakeInteger (_ceae ));return _affd ;};func (_gce *PSOperand )String ()string {return _b .Sprintf ("\u0025\u0073",*_gce )};func _ffd (_egeg int )int {if _egeg < 0{return -_egeg ;};return _egeg ;};
|
||||
|
||||
// DebugString returns a descriptive string representation of the stack - intended for debugging.
|
||||
func (_dcb *PSStack )DebugString ()string {_cgg :="\u005b\u0020";for _ ,_bfab :=range *_dcb {_cgg +=_bfab .DebugString ();_cgg +="\u0020";};_cgg +="\u005d";return _cgg ;};
|
||||
|
||||
// Pop pops an object from the top of the stack.
|
||||
func (_gcdg *PSStack )Pop ()(PSObject ,error ){if len (*_gcdg )< 1{return nil ,ErrStackUnderflow ;};_gbda :=(*_gcdg )[len (*_gcdg )-1];*_gcdg =(*_gcdg )[0:len (*_gcdg )-1];return _gbda ,nil ;};var ErrStackUnderflow =_e .New ("\u0073t\u0061c\u006b\u0020\u0075\u006e\u0064\u0065\u0072\u0066\u006c\u006f\u0077");
|
||||
// NewPSParser returns a new instance of the PDF Postscript parser from input data.
|
||||
func NewPSParser (content []byte )*PSParser {_ebdd :=PSParser {};_gfcc :=_e .NewBuffer (content );_ebdd ._aab =_ee .NewReader (_gfcc );return &_ebdd ;};func (_bb *PSBoolean )Duplicate ()PSObject {_dcb :=PSBoolean {};_dcb .Val =_bb .Val ;return &_dcb };var ErrStackUnderflow =_df .New ("\u0073t\u0061c\u006b\u0020\u0075\u006e\u0064\u0065\u0072\u0066\u006c\u006f\u0077");func (_dad *PSOperand )log (_fcba *PSStack )error {_fgff ,_ggd :=_fcba .PopNumberAsFloat64 ();if _ggd !=nil {return _ggd ;};_bcfc :=_ca .Log10 (_fgff );_ggd =_fcba .Push (MakeReal (_bcfc ));return _ggd ;};
|
||||
|
||||
// NewPSStack returns an initialized PSStack.
|
||||
func NewPSStack ()*PSStack {return &PSStack {}};
|
||||
|
||||
// PopNumberAsFloat64 pops and return the numeric value of the top of the stack as a float64.
|
||||
// Real or integer only.
|
||||
func (_aacg *PSStack )PopNumberAsFloat64 ()(float64 ,error ){_acbe ,_dfea :=_aacg .Pop ();if _dfea !=nil {return 0,_dfea ;};if _faa ,_ced :=_acbe .(*PSReal );_ced {return _faa .Val ,nil ;}else if _acde ,_bcbf :=_acbe .(*PSInteger );_bcbf {return float64 (_acde .Val ),nil ;}else {return 0,ErrTypeCheck ;};};func (_bcd *PSBoolean )String ()string {return _b .Sprintf ("\u0025\u0076",_bcd .Val )};func (_cea *PSOperand )floor (_ccge *PSStack )error {_fbb ,_agef :=_ccge .Pop ();if _agef !=nil {return _agef ;};if _cgd ,_gbc :=_fbb .(*PSReal );_gbc {_agef =_ccge .Push (MakeReal (_ca .Floor (_cgd .Val )));}else if _dfg ,_bcc :=_fbb .(*PSInteger );_bcc {_agef =_ccge .Push (MakeInteger (_dfg .Val ));}else {return ErrTypeCheck ;};return _agef ;};func (_bc *PSBoolean )DebugString ()string {return _b .Sprintf ("\u0062o\u006f\u006c\u003a\u0025\u0076",_bc .Val );};
|
||||
|
||||
// PSStack defines a stack of PSObjects. PSObjects can be pushed on or pull from the stack.
|
||||
type PSStack []PSObject ;func (_gbee *PSOperand )sqrt (_dadg *PSStack )error {_becg ,_adfb :=_dadg .PopNumberAsFloat64 ();if _adfb !=nil {return _adfb ;};if _becg < 0{return ErrRangeCheck ;};_acf :=_ca .Sqrt (_becg );_adfb =_dadg .Push (MakeReal (_acf ));return _adfb ;};func (_dba *PSOperand )div (_cdef *PSStack )error {_fa ,_fbea :=_cdef .Pop ();if _fbea !=nil {return _fbea ;};_cbg ,_fbea :=_cdef .Pop ();if _fbea !=nil {return _fbea ;};_dceb ,_dcf :=_fa .(*PSReal );_bagf ,_bcfa :=_fa .(*PSInteger );if !_dcf &&!_bcfa {return ErrTypeCheck ;};if _dcf &&_dceb .Val ==0{return ErrUndefinedResult ;};if _bcfa &&_bagf .Val ==0{return ErrUndefinedResult ;};_ccgg ,_fd :=_cbg .(*PSReal );_aae ,_dbd :=_cbg .(*PSInteger );if !_fd &&!_dbd {return ErrTypeCheck ;};var _bbcd float64 =0;if _fd {_bbcd =_ccgg .Val ;}else {_bbcd =float64 (_aae .Val );};if _dcf {_bbcd /=_dceb .Val ;}else {_bbcd /=float64 (_bagf .Val );};_fbea =_cdef .Push (MakeReal (_bbcd ));return _fbea ;};func (_gef *PSOperand )mul (_adaa *PSStack )error {_dae ,_fgfe :=_adaa .Pop ();if _fgfe !=nil {return _fgfe ;};_edb ,_fgfe :=_adaa .Pop ();if _fgfe !=nil {return _fgfe ;};_agda ,_edbe :=_dae .(*PSReal );_gfde ,_ffef :=_dae .(*PSInteger );if !_edbe &&!_ffef {return ErrTypeCheck ;};_decac ,_dde :=_edb .(*PSReal );_adfd ,_ebf :=_edb .(*PSInteger );if !_dde &&!_ebf {return ErrTypeCheck ;};if _ffef &&_ebf {_ebd :=_gfde .Val *_adfd .Val ;_daa :=_adaa .Push (MakeInteger (_ebd ));return _daa ;};var _adgad float64 =0;if _edbe {_adgad =_agda .Val ;}else {_adgad =float64 (_gfde .Val );};if _dde {_adgad *=_decac .Val ;}else {_adgad *=float64 (_adfd .Val );};_fgfe =_adaa .Push (MakeReal (_adgad ));return _fgfe ;};func (_dge *PSOperand )atan (_abe *PSStack )error {_cfb ,_eed :=_abe .PopNumberAsFloat64 ();if _eed !=nil {return _eed ;};_deg ,_eed :=_abe .PopNumberAsFloat64 ();if _eed !=nil {return _eed ;};if _cfb ==0{var _aga error ;if _deg < 0{_aga =_abe .Push (MakeReal (270));}else {_aga =_abe .Push (MakeReal (90));};return _aga ;};_cga :=_deg /_cfb ;_baa :=_ca .Atan (_cga )*180/_ca .Pi ;_eed =_abe .Push (MakeReal (_baa ));return _eed ;};func (_cfa *PSInteger )Duplicate ()PSObject {_dce :=PSInteger {};_dce .Val =_cfa .Val ;return &_dce };func (_aeff *PSParser )parseOperand ()(*PSOperand ,error ){var _gcge []byte ;for {_bbfd ,_ccac :=_aeff ._aab .Peek (1);if _ccac !=nil {if _ccac ==_c .EOF {break ;};return nil ,_ccac ;};if _ba .IsDelimiter (_bbfd [0]){break ;};if _ba .IsWhiteSpace (_bbfd [0]){break ;};_aebb ,_ :=_aeff ._aab .ReadByte ();_gcge =append (_gcge ,_aebb );};if len (_gcge )==0{return nil ,_df .New ("\u0069\u006e\u0076al\u0069\u0064\u0020\u006f\u0070\u0065\u0072\u0061\u006e\u0064\u0020\u0028\u0065\u006d\u0070\u0074\u0079\u0029");};return MakeOperand (string (_gcge )),nil ;};
|
||||
|
||||
// Exec executes the operand `op` in the state specified by `stack`.
|
||||
func (_cag *PSOperand )Exec (stack *PSStack )error {_agg :=ErrUnsupportedOperand ;switch *_cag {case "\u0061\u0062\u0073":_agg =_cag .abs (stack );case "\u0061\u0064\u0064":_agg =_cag .add (stack );case "\u0061\u006e\u0064":_agg =_cag .and (stack );case "\u0061\u0074\u0061\u006e":_agg =_cag .atan (stack );case "\u0062\u0069\u0074\u0073\u0068\u0069\u0066\u0074":_agg =_cag .bitshift (stack );case "\u0063e\u0069\u006c\u0069\u006e\u0067":_agg =_cag .ceiling (stack );case "\u0063\u006f\u0070\u0079":_agg =_cag .copy (stack );case "\u0063\u006f\u0073":_agg =_cag .cos (stack );case "\u0063\u0076\u0069":_agg =_cag .cvi (stack );case "\u0063\u0076\u0072":_agg =_cag .cvr (stack );case "\u0064\u0069\u0076":_agg =_cag .div (stack );case "\u0064\u0075\u0070":_agg =_cag .dup (stack );case "\u0065\u0071":_agg =_cag .eq (stack );case "\u0065\u0078\u0063\u0068":_agg =_cag .exch (stack );case "\u0065\u0078\u0070":_agg =_cag .exp (stack );case "\u0066\u006c\u006fo\u0072":_agg =_cag .floor (stack );case "\u0067\u0065":_agg =_cag .ge (stack );case "\u0067\u0074":_agg =_cag .gt (stack );case "\u0069\u0064\u0069\u0076":_agg =_cag .idiv (stack );case "\u0069\u0066":_agg =_cag .ifCondition (stack );case "\u0069\u0066\u0065\u006c\u0073\u0065":_agg =_cag .ifelse (stack );case "\u0069\u006e\u0064e\u0078":_agg =_cag .index (stack );case "\u006c\u0065":_agg =_cag .le (stack );case "\u006c\u006f\u0067":_agg =_cag .log (stack );case "\u006c\u006e":_agg =_cag .ln (stack );case "\u006c\u0074":_agg =_cag .lt (stack );case "\u006d\u006f\u0064":_agg =_cag .mod (stack );case "\u006d\u0075\u006c":_agg =_cag .mul (stack );case "\u006e\u0065":_agg =_cag .ne (stack );case "\u006e\u0065\u0067":_agg =_cag .neg (stack );case "\u006e\u006f\u0074":_agg =_cag .not (stack );case "\u006f\u0072":_agg =_cag .or (stack );case "\u0070\u006f\u0070":_agg =_cag .pop (stack );case "\u0072\u006f\u0075n\u0064":_agg =_cag .round (stack );case "\u0072\u006f\u006c\u006c":_agg =_cag .roll (stack );case "\u0073\u0069\u006e":_agg =_cag .sin (stack );case "\u0073\u0071\u0072\u0074":_agg =_cag .sqrt (stack );case "\u0073\u0075\u0062":_agg =_cag .sub (stack );case "\u0074\u0072\u0075\u006e\u0063\u0061\u0074\u0065":_agg =_cag .truncate (stack );case "\u0078\u006f\u0072":_agg =_cag .xor (stack );};return _agg ;};
|
||||
|
||||
// PSObjectArrayToFloat64Array converts []PSObject into a []float64 array. Each PSObject must represent a number,
|
||||
// otherwise a ErrTypeCheck error occurs.
|
||||
func PSObjectArrayToFloat64Array (objects []PSObject )([]float64 ,error ){var _aa []float64 ;for _ ,_g :=range objects {if _fe ,_eb :=_g .(*PSInteger );_eb {_aa =append (_aa ,float64 (_fe .Val ));}else if _cf ,_bg :=_g .(*PSReal );_bg {_aa =append (_aa ,_cf .Val );}else {return nil ,ErrTypeCheck ;};};return _aa ,nil ;};func (_fga *PSOperand )pop (_aecg *PSStack )error {_ ,_gac :=_aecg .Pop ();if _gac !=nil {return _gac ;};return nil ;};func (_edf *PSOperand )index (_edfg *PSStack )error {_aef ,_adb :=_edfg .Pop ();if _adb !=nil {return _adb ;};_bec ,_babg :=_aef .(*PSInteger );if !_babg {return ErrTypeCheck ;};if _bec .Val < 0{return ErrRangeCheck ;};if _bec .Val > len (*_edfg )-1{return ErrStackUnderflow ;};_gffe :=(*_edfg )[len (*_edfg )-1-_bec .Val ];_adb =_edfg .Push (_gffe .Duplicate ());return _adb ;};func (_abd *PSOperand )gt (_bbce *PSStack )error {_ffec ,_cebb :=_bbce .PopNumberAsFloat64 ();if _cebb !=nil {return _cebb ;};_dfe ,_cebb :=_bbce .PopNumberAsFloat64 ();if _cebb !=nil {return _cebb ;};if _ca .Abs (_dfe -_ffec )< _cd {_feg :=_bbce .Push (MakeBool (false ));return _feg ;}else if _dfe > _ffec {_eef :=_bbce .Push (MakeBool (true ));return _eef ;}else {_geac :=_bbce .Push (MakeBool (false ));return _geac ;};};
|
||||
|
||||
// String returns a string representation of the stack.
|
||||
func (_gcc *PSStack )String ()string {_dcbd :="\u005b\u0020";for _ ,_beef :=range *_gcc {_dcbd +=_beef .String ();_dcbd +="\u0020";};_dcbd +="\u005d";return _dcbd ;};func (_cdcc *PSOperand )round (_decf *PSStack )error {_bgb ,_gace :=_decf .Pop ();if _gace !=nil {return _gace ;};if _ggad ,_cad :=_bgb .(*PSReal );_cad {_gace =_decf .Push (MakeReal (_ca .Floor (_ggad .Val +0.5)));}else if _ceff ,_daf :=_bgb .(*PSInteger );_daf {_gace =_decf .Push (MakeInteger (_ceff .Val ));}else {return ErrTypeCheck ;};return _gace ;};
|
||||
|
||||
// PSExecutor has its own execution stack and is used to executre a PS routine (program).
|
||||
type PSExecutor struct{Stack *PSStack ;_f *PSProgram ;};func (_bfg *PSOperand )add (_bbe *PSStack )error {_ceee ,_cfd :=_bbe .Pop ();if _cfd !=nil {return _cfd ;};_baga ,_cfd :=_bbe .Pop ();if _cfd !=nil {return _cfd ;};_fff ,_gcg :=_ceee .(*PSReal );_ebaa ,_fbf :=_ceee .(*PSInteger );if !_gcg &&!_fbf {return ErrTypeCheck ;};_gg ,_cdd :=_baga .(*PSReal );_bga ,_ggf :=_baga .(*PSInteger );if !_cdd &&!_ggf {return ErrTypeCheck ;};if _fbf &&_ggf {_fg :=_ebaa .Val +_bga .Val ;_efd :=_bbe .Push (MakeInteger (_fg ));return _efd ;};var _fbg float64 =0;if _gcg {_fbg =_fff .Val ;}else {_fbg =float64 (_ebaa .Val );};if _cdd {_fbg +=_gg .Val ;}else {_fbg +=float64 (_bga .Val );};_cfd =_bbe .Push (MakeReal (_fbg ));return _cfd ;};var ErrRangeCheck =_df .New ("\u0072\u0061\u006e\u0067\u0065\u0020\u0063\u0068\u0065\u0063\u006b\u0020e\u0072\u0072\u006f\u0072");
|
||||
|
||||
// PSObject represents a postscript object.
|
||||
type PSObject interface{
|
||||
|
||||
@ -103,17 +65,55 @@ Duplicate ()PSObject ;
|
||||
DebugString ()string ;
|
||||
|
||||
// String returns a string representation of the PSObject.
|
||||
String ()string ;};func (_fef *PSOperand )lt (_bbbf *PSStack )error {_dae ,_aegb :=_bbbf .PopNumberAsFloat64 ();if _aegb !=nil {return _aegb ;};_gfg ,_aegb :=_bbbf .PopNumberAsFloat64 ();if _aegb !=nil {return _aegb ;};if _a .Abs (_gfg -_dae )< _g {_aab :=_bbbf .Push (MakeBool (false ));return _aab ;}else if _gfg < _dae {_ceff :=_bbbf .Push (MakeBool (true ));return _ceff ;}else {_faa :=_bbbf .Push (MakeBool (false ));return _faa ;};};func (_dfg *PSOperand )sub (_cadc *PSStack )error {_fba ,_gcgeg :=_cadc .Pop ();if _gcgeg !=nil {return _gcgeg ;};_fffa ,_gcgeg :=_cadc .Pop ();if _gcgeg !=nil {return _gcgeg ;};_eebf ,_efga :=_fba .(*PSReal );_egbe ,_gdag :=_fba .(*PSInteger );if !_efga &&!_gdag {return ErrTypeCheck ;};_aceg ,_dada :=_fffa .(*PSReal );_dcgc ,_ccfa :=_fffa .(*PSInteger );if !_dada &&!_ccfa {return ErrTypeCheck ;};if _gdag &&_ccfa {_ffff :=_dcgc .Val -_egbe .Val ;_bde :=_cadc .Push (MakeInteger (_ffff ));return _bde ;};var _edee float64 =0;if _dada {_edee =_aceg .Val ;}else {_edee =float64 (_dcgc .Val );};if _efga {_edee -=_eebf .Val ;}else {_edee -=float64 (_egbe .Val );};_gcgeg =_cadc .Push (MakeReal (_edee ));return _gcgeg ;};func (_fgde *PSParser )parseBool ()(*PSBoolean ,error ){_aaec ,_acg :=_fgde ._dadg .Peek (4);if _acg !=nil {return MakeBool (false ),_acg ;};if (len (_aaec )>=4)&&(string (_aaec [:4])=="\u0074\u0072\u0075\u0065"){_fgde ._dadg .Discard (4);return MakeBool (true ),nil ;};_aaec ,_acg =_fgde ._dadg .Peek (5);if _acg !=nil {return MakeBool (false ),_acg ;};if (len (_aaec )>=5)&&(string (_aaec [:5])=="\u0066\u0061\u006cs\u0065"){_fgde ._dadg .Discard (5);return MakeBool (false ),nil ;};return MakeBool (false ),_e .New ("\u0075n\u0065\u0078\u0070\u0065c\u0074\u0065\u0064\u0020\u0062o\u006fl\u0065a\u006e\u0020\u0073\u0074\u0072\u0069\u006eg");};func (_cef *PSOperand )bitshift (_egb *PSStack )error {_efe ,_fbd :=_egb .PopInteger ();if _fbd !=nil {return _fbd ;};_fdb ,_fbd :=_egb .PopInteger ();if _fbd !=nil {return _fbd ;};var _gdcf int ;if _efe >=0{_gdcf =_fdb <<uint (_efe );}else {_gdcf =_fdb >>uint (-_efe );};_fbd =_egb .Push (MakeInteger (_gdcf ));return _fbd ;};func (_bdb *PSOperand )gt (_aca *PSStack )error {_cfbd ,_dfa :=_aca .PopNumberAsFloat64 ();if _dfa !=nil {return _dfa ;};_cgc ,_dfa :=_aca .PopNumberAsFloat64 ();if _dfa !=nil {return _dfa ;};if _a .Abs (_cgc -_cfbd )< _g {_ebff :=_aca .Push (MakeBool (false ));return _ebff ;}else if _cgc > _cfbd {_eac :=_aca .Push (MakeBool (true ));return _eac ;}else {_fgdc :=_aca .Push (MakeBool (false ));return _fgdc ;};};func (_eeea *PSProgram )Duplicate ()PSObject {_gec :=&PSProgram {};for _ ,_cdc :=range *_eeea {_gec .Append (_cdc .Duplicate ());};return _gec ;};
|
||||
String ()string ;};func (_dgd *PSOperand )dup (_fgd *PSStack )error {_efdc ,_cce :=_fgd .Pop ();if _cce !=nil {return _cce ;};_cce =_fgd .Push (_efdc );if _cce !=nil {return _cce ;};_cce =_fgd .Push (_efdc .Duplicate ());return _cce ;};var ErrUndefinedResult =_df .New ("\u0075\u006e\u0064\u0065fi\u006e\u0065\u0064\u0020\u0072\u0065\u0073\u0075\u006c\u0074\u0020\u0065\u0072\u0072o\u0072");
|
||||
|
||||
// PopNumberAsFloat64 pops and return the numeric value of the top of the stack as a float64.
|
||||
// Real or integer only.
|
||||
func (_bcf *PSStack )PopNumberAsFloat64 ()(float64 ,error ){_abed ,_ggaa :=_bcf .Pop ();if _ggaa !=nil {return 0,_ggaa ;};if _age ,_cacf :=_abed .(*PSReal );_cacf {return _age .Val ,nil ;}else if _baba ,_gegb :=_abed .(*PSInteger );_gegb {return float64 (_baba .Val ),nil ;}else {return 0,ErrTypeCheck ;};};func (_cdae *PSOperand )mul (_bfb *PSStack )error {_bcee ,_ebe :=_bfb .Pop ();if _ebe !=nil {return _ebe ;};_gdfb ,_ebe :=_bfb .Pop ();if _ebe !=nil {return _ebe ;};_gfe ,_aga :=_bcee .(*PSReal );_dffg ,_fgeb :=_bcee .(*PSInteger );if !_aga &&!_fgeb {return ErrTypeCheck ;};_aed ,_gcbfc :=_gdfb .(*PSReal );_addg ,_eaf :=_gdfb .(*PSInteger );if !_gcbfc &&!_eaf {return ErrTypeCheck ;};if _fgeb &&_eaf {_babe :=_dffg .Val *_addg .Val ;_agag :=_bfb .Push (MakeInteger (_babe ));return _agag ;};var _cfag float64 =0;if _aga {_cfag =_gfe .Val ;}else {_cfag =float64 (_dffg .Val );};if _gcbfc {_cfag *=_aed .Val ;}else {_cfag *=float64 (_addg .Val );};_ebe =_bfb .Push (MakeReal (_cfag ));return _ebe ;};
|
||||
// Empty empties the stack.
|
||||
func (_bcde *PSStack )Empty (){*_bcde =[]PSObject {}};func (_ffa *PSOperand )exch (_cff *PSStack )error {_cfea ,_gea :=_cff .Pop ();if _gea !=nil {return _gea ;};_fge ,_gea :=_cff .Pop ();if _gea !=nil {return _gea ;};_gea =_cff .Push (_cfea );if _gea !=nil {return _gea ;};_gea =_cff .Push (_fge );return _gea ;};func (_gdf *PSOperand )cvr (_efc *PSStack )error {_ggc ,_eec :=_efc .Pop ();if _eec !=nil {return _eec ;};if _aec ,_dbb :=_ggc .(*PSReal );_dbb {_eec =_efc .Push (MakeReal (_aec .Val ));}else if _add ,_bee :=_ggc .(*PSInteger );_bee {_eec =_efc .Push (MakeReal (float64 (_add .Val )));}else {return ErrTypeCheck ;};return _eec ;};func (_ffg *PSOperand )exp (_gad *PSStack )error {_gcb ,_dbe :=_gad .PopNumberAsFloat64 ();if _dbe !=nil {return _dbe ;};_bge ,_dbe :=_gad .PopNumberAsFloat64 ();if _dbe !=nil {return _dbe ;};if _ca .Abs (_gcb )< 1&&_bge < 0{return ErrUndefinedResult ;};_ffe :=_ca .Pow (_bge ,_gcb );_dbe =_gad .Push (MakeReal (_ffe ));return _dbe ;};func (_ceb *PSProgram )String ()string {_ac :="\u007b\u0020";for _ ,_ea :=range *_ceb {_ac +=_ea .String ();_ac +="\u0020";};_ac +="\u007d";return _ac ;};func (_bagac *PSOperand )ifCondition (_eda *PSStack )error {_fage ,_baf :=_eda .Pop ();if _baf !=nil {return _baf ;};_dfc ,_baf :=_eda .Pop ();if _baf !=nil {return _baf ;};_beac ,_afd :=_fage .(*PSProgram );if !_afd {return ErrTypeCheck ;};_gbe ,_afd :=_dfc .(*PSBoolean );if !_afd {return ErrTypeCheck ;};if _gbe .Val {_gaa :=_beac .Exec (_eda );return _gaa ;};return nil ;};func (_bdb *PSOperand )cos (_da *PSStack )error {_cc ,_baab :=_da .PopNumberAsFloat64 ();if _baab !=nil {return _baab ;};_aaa :=_ca .Cos (_cc *_ca .Pi /180.0);_baab =_da .Push (MakeReal (_aaa ));return _baab ;};
|
||||
|
||||
// PSProgram defines a Postscript program which is a series of PS objects (arguments, commands, programs etc).
|
||||
type PSProgram []PSObject ;func (_bab *PSOperand )abs (_bbc *PSStack )error {_fbe ,_bcdb :=_bbc .Pop ();if _bcdb !=nil {return _bcdb ;};if _dca ,_ef :=_fbe .(*PSReal );_ef {_bbd :=_dca .Val ;if _bbd < 0{_bcdb =_bbc .Push (MakeReal (-_bbd ));}else {_bcdb =_bbc .Push (MakeReal (_bbd ));};}else if _age ,_cfg :=_fbe .(*PSInteger );_cfg {_bcf :=_age .Val ;if _bcf < 0{_bcdb =_bbc .Push (MakeInteger (-_bcf ));}else {_bcdb =_bbc .Push (MakeInteger (_bcf ));};}else {return ErrTypeCheck ;};return _bcdb ;};
|
||||
|
||||
// Exec executes the program, typically leaving output values on the stack.
|
||||
func (_cbf *PSProgram )Exec (stack *PSStack )error {for _ ,_fde :=range *_cbf {var _cgd error ;switch _ec :=_fde .(type ){case *PSInteger :_dgb :=_ec ;_cgd =stack .Push (_dgb );case *PSReal :_gdc :=_ec ;_cgd =stack .Push (_gdc );case *PSBoolean :_ecd :=_ec ;_cgd =stack .Push (_ecd );case *PSProgram :_ef :=_ec ;_cgd =stack .Push (_ef );case *PSOperand :_cf :=_ec ;_cgd =_cf .Exec (stack );default:return ErrTypeCheck ;};if _cgd !=nil {return _cgd ;};};return nil ;};func (_bga *PSOperand )cvi (_eca *PSStack )error {_fcg ,_beb :=_eca .Pop ();if _beb !=nil {return _beb ;};if _gbb ,_dgbc :=_fcg .(*PSReal );_dgbc {_agf :=int (_gbb .Val );_beb =_eca .Push (MakeInteger (_agf ));}else if _dgec ,_ade :=_fcg .(*PSInteger );_ade {_bcg :=_dgec .Val ;_beb =_eca .Push (MakeInteger (_bcg ));}else {return ErrTypeCheck ;};return _beb ;};func (_dac *PSOperand )ne (_dbb *PSStack )error {_agda :=_dac .eq (_dbb );if _agda !=nil {return _agda ;};_agda =_dac .not (_dbb );return _agda ;};
|
||||
func (_dcd *PSProgram )Exec (stack *PSStack )error {for _ ,_dee :=range *_dcd {var _cbc error ;switch _cg :=_dee .(type ){case *PSInteger :_ed :=_cg ;_cbc =stack .Push (_ed );case *PSReal :_fea :=_cg ;_cbc =stack .Push (_fea );case *PSBoolean :_ag :=_cg ;_cbc =stack .Push (_ag );case *PSProgram :_ff :=_cg ;_cbc =stack .Push (_ff );case *PSOperand :_fb :=_cg ;_cbc =_fb .Exec (stack );default:return ErrTypeCheck ;};if _cbc !=nil {return _cbc ;};};return nil ;};
|
||||
|
||||
// PSParser is a basic Postscript parser.
|
||||
type PSParser struct{_dadg *_c .Reader };var ErrRangeCheck =_e .New ("\u0072\u0061\u006e\u0067\u0065\u0020\u0063\u0068\u0065\u0063\u006b\u0020e\u0072\u0072\u006f\u0072");func (_gdfa *PSOperand )ifelse (_cae *PSStack )error {_fgaf ,_cbb :=_cae .Pop ();if _cbb !=nil {return _cbb ;};_ccd ,_cbb :=_cae .Pop ();if _cbb !=nil {return _cbb ;};_gda ,_cbb :=_cae .Pop ();if _cbb !=nil {return _cbb ;};_ffeb ,_fgfg :=_fgaf .(*PSProgram );if !_fgfg {return ErrTypeCheck ;};_fgfb ,_fgfg :=_ccd .(*PSProgram );if !_fgfg {return ErrTypeCheck ;};_bbe ,_fgfg :=_gda .(*PSBoolean );if !_fgfg {return ErrTypeCheck ;};if _bbe .Val {_ada :=_fgfb .Exec (_cae );return _ada ;};_cbb =_ffeb .Exec (_cae );return _cbb ;};
|
||||
// NewPSProgram returns an empty, initialized PSProgram.
|
||||
func NewPSProgram ()*PSProgram {return &PSProgram {}};func (_gacd *PSOperand )sub (_edd *PSStack )error {_fegf ,_bfa :=_edd .Pop ();if _bfa !=nil {return _bfa ;};_fef ,_bfa :=_edd .Pop ();if _bfa !=nil {return _bfa ;};_eaf ,_eag :=_fegf .(*PSReal );_bgcg ,_cfc :=_fegf .(*PSInteger );if !_eag &&!_cfc {return ErrTypeCheck ;};_dcda ,_bdg :=_fef .(*PSReal );_fcd ,_afc :=_fef .(*PSInteger );if !_bdg &&!_afc {return ErrTypeCheck ;};if _cfc &&_afc {_caf :=_fcd .Val -_bgcg .Val ;_bcea :=_edd .Push (MakeInteger (_caf ));return _bcea ;};var _gebe float64 =0;if _bdg {_gebe =_dcda .Val ;}else {_gebe =float64 (_fcd .Val );};if _eag {_gebe -=_eaf .Val ;}else {_gebe -=float64 (_bgcg .Val );};_bfa =_edd .Push (MakeReal (_gebe ));return _bfa ;};
|
||||
|
||||
// MakeOperand returns a new PSOperand object based on string `val`.
|
||||
func MakeOperand (val string )*PSOperand {_addf :=PSOperand (val );return &_addf };func (_cfbb *PSOperand )mod (_dfag *PSStack )error {_cfdg ,_cca :=_dfag .Pop ();if _cca !=nil {return _cca ;};_ece ,_cca :=_dfag .Pop ();if _cca !=nil {return _cca ;};_dcga ,_gab :=_cfdg .(*PSInteger );if !_gab {return ErrTypeCheck ;};if _dcga .Val ==0{return ErrUndefinedResult ;};_fdg ,_gab :=_ece .(*PSInteger );if !_gab {return ErrTypeCheck ;};_aed :=_fdg .Val %_dcga .Val ;_cca =_dfag .Push (MakeInteger (_aed ));return _cca ;};func (_eee *PSOperand )truncate (_cfca *PSStack )error {_dbee ,_gddf :=_cfca .Pop ();if _gddf !=nil {return _gddf ;};if _bage ,_fed :=_dbee .(*PSReal );_fed {_aeee :=int (_bage .Val );_gddf =_cfca .Push (MakeReal (float64 (_aeee )));}else if _ged ,_bfda :=_dbee .(*PSInteger );_bfda {_gddf =_cfca .Push (MakeInteger (_ged .Val ));}else {return ErrTypeCheck ;};return _gddf ;};
|
||||
|
||||
// Append appends an object to the PSProgram.
|
||||
func (_bag *PSProgram )Append (obj PSObject ){*_bag =append (*_bag ,obj )};
|
||||
|
||||
// PSInteger represents an integer.
|
||||
type PSInteger struct{Val int ;};func (_gdd *PSOperand )bitshift (_bde *PSStack )error {_ffc ,_cfed :=_bde .PopInteger ();if _cfed !=nil {return _cfed ;};_dec ,_cfed :=_bde .PopInteger ();if _cfed !=nil {return _cfed ;};var _edc int ;if _ffc >=0{_edc =_dec <<uint (_ffc );}else {_edc =_dec >>uint (-_ffc );};_cfed =_bde .Push (MakeInteger (_edc ));return _cfed ;};
|
||||
|
||||
// Push pushes an object on top of the stack.
|
||||
func (_afdf *PSStack )Push (obj PSObject )error {if len (*_afdf )> 100{return ErrStackOverflow ;};*_afdf =append (*_afdf ,obj );return nil ;};func (_dbc *PSOperand )ge (_agc *PSStack )error {_dd ,_fac :=_agc .PopNumberAsFloat64 ();if _fac !=nil {return _fac ;};_bed ,_fac :=_agc .PopNumberAsFloat64 ();if _fac !=nil {return _fac ;};if _ca .Abs (_bed -_dd )< _cd {_aac :=_agc .Push (MakeBool (true ));return _aac ;}else if _bed > _dd {_cdg :=_agc .Push (MakeBool (true ));return _cdg ;}else {_gff :=_agc .Push (MakeBool (false ));return _gff ;};};var ErrStackOverflow =_df .New ("\u0073\u0074\u0061\u0063\u006b\u0020\u006f\u0076\u0065r\u0066\u006c\u006f\u0077");func (_de *PSReal )String ()string {return _b .Sprintf ("\u0025\u002e\u0035\u0066",_de .Val )};var ErrUnsupportedOperand =_df .New ("\u0075\u006e\u0073\u0075pp\u006f\u0072\u0074\u0065\u0064\u0020\u006f\u0070\u0065\u0072\u0061\u006e\u0064");func (_edce *PSOperand )not (_dcac *PSStack )error {_cab ,_cgaa :=_dcac .Pop ();if _cgaa !=nil {return _cgaa ;};if _gge ,_ffefg :=_cab .(*PSBoolean );_ffefg {_cgaa =_dcac .Push (MakeBool (!_gge .Val ));return _cgaa ;}else if _gddb ,_ddc :=_cab .(*PSInteger );_ddc {_cgaa =_dcac .Push (MakeInteger (^_gddb .Val ));return _cgaa ;}else {return ErrTypeCheck ;};};
|
||||
|
||||
// PSBoolean represents a boolean value.
|
||||
type PSBoolean struct{Val bool ;};func (_fcdf *PSParser )skipSpaces ()(int ,error ){_edff :=0;for {_gbd ,_acd :=_fcdf ._aab .Peek (1);if _acd !=nil {return 0,_acd ;};if _ba .IsWhiteSpace (_gbd [0]){_fcdf ._aab .ReadByte ();_edff ++;}else {break ;};};return _edff ,nil ;};func (_feb *PSProgram )Duplicate ()PSObject {_gcf :=&PSProgram {};for _ ,_bdf :=range *_feb {_gcf .Append (_bdf .Duplicate ());};return _gcf ;};func (_ddf *PSOperand )ln (_fgb *PSStack )error {_edgd ,_ffee :=_fgb .PopNumberAsFloat64 ();if _ffee !=nil {return _ffee ;};_fab :=_ca .Log (_edgd );_ffee =_fgb .Push (MakeReal (_fab ));return _ffee ;};func (_bgdg *PSOperand )roll (_ggce *PSStack )error {_cec ,_dfeb :=_ggce .Pop ();if _dfeb !=nil {return _dfeb ;};_gfeg ,_dfeb :=_ggce .Pop ();if _dfeb !=nil {return _dfeb ;};_adgb ,_bdbc :=_cec .(*PSInteger );if !_bdbc {return ErrTypeCheck ;};_ecd ,_bdbc :=_gfeg .(*PSInteger );if !_bdbc {return ErrTypeCheck ;};if _ecd .Val < 0{return ErrRangeCheck ;};if _ecd .Val ==0||_ecd .Val ==1{return nil ;};if _ecd .Val > len (*_ggce ){return ErrStackUnderflow ;};for _bacdg :=0;_bacdg < _ffd (_adgb .Val );_bacdg ++{var _edbg []PSObject ;_edbg =(*_ggce )[len (*_ggce )-(_ecd .Val ):len (*_ggce )];if _adgb .Val > 0{_ega :=_edbg [len (_edbg )-1];_edbg =append ([]PSObject {_ega },_edbg [0:len (_edbg )-1]...);}else {_ccb :=_edbg [len (_edbg )-_ecd .Val ];_edbg =append (_edbg [1:],_ccb );};_aefd :=append ((*_ggce )[0:len (*_ggce )-_ecd .Val ],_edbg ...);_ggce =&_aefd ;};return nil ;};func (_dcg *PSProgram )DebugString ()string {_cee :="\u007b\u0020";for _ ,_dfa :=range *_dcg {_cee +=_dfa .DebugString ();_cee +="\u0020";};_cee +="\u007d";return _cee ;};func (_bcb *PSOperand )lt (_ec *PSStack )error {_cgdc ,_bgc :=_ec .PopNumberAsFloat64 ();if _bgc !=nil {return _bgc ;};_bfb ,_bgc :=_ec .PopNumberAsFloat64 ();if _bgc !=nil {return _bgc ;};if _ca .Abs (_bfb -_cgdc )< _cd {_fad :=_ec .Push (MakeBool (false ));return _fad ;}else if _bfb < _cgdc {_gga :=_ec .Push (MakeBool (true ));return _gga ;}else {_adag :=_ec .Push (MakeBool (false ));return _adag ;};};func (_ce *PSInteger )DebugString ()string {return _b .Sprintf ("\u0069\u006e\u0074\u003a\u0025\u0064",_ce .Val );};func (_fggb *PSOperand )ifelse (_dege *PSStack )error {_bgda ,_eecc :=_dege .Pop ();if _eecc !=nil {return _eecc ;};_fcb ,_eecc :=_dege .Pop ();if _eecc !=nil {return _eecc ;};_acg ,_eecc :=_dege .Pop ();if _eecc !=nil {return _eecc ;};_adf ,_cge :=_bgda .(*PSProgram );if !_cge {return ErrTypeCheck ;};_dcef ,_cge :=_fcb .(*PSProgram );if !_cge {return ErrTypeCheck ;};_aaad ,_cge :=_acg .(*PSBoolean );if !_cge {return ErrTypeCheck ;};if _aaad .Val {_dbg :=_dcef .Exec (_dege );return _dbg ;};_eecc =_adf .Exec (_dege );return _eecc ;};
|
||||
|
||||
// MakeReal returns a new PSReal object initialized with `val`.
|
||||
func MakeReal (val float64 )*PSReal {_fbac :=PSReal {};_fbac .Val =val ;return &_fbac };
|
||||
func MakeReal (val float64 )*PSReal {_adgbf :=PSReal {};_adgbf .Val =val ;return &_adgbf };
|
||||
|
||||
// MakeBool returns a new PSBoolean object initialized with `val`.
|
||||
func MakeBool (val bool )*PSBoolean {_fcf :=PSBoolean {};_fcf .Val =val ;return &_fcf };func (_cgb *PSOperand )le (_gdg *PSStack )error {_cgae ,_cef :=_gdg .PopNumberAsFloat64 ();if _cef !=nil {return _cef ;};_deca ,_cef :=_gdg .PopNumberAsFloat64 ();if _cef !=nil {return _cef ;};if _ca .Abs (_deca -_cgae )< _cd {_agee :=_gdg .Push (MakeBool (true ));return _agee ;}else if _deca < _cgae {_cbd :=_gdg .Push (MakeBool (true ));return _cbd ;}else {_cbb :=_gdg .Push (MakeBool (false ));return _cbb ;};};func (_gcgg *PSParser )parseFunction ()(*PSProgram ,error ){_ffab ,_ :=_gcgg ._aab .ReadByte ();if _ffab !='{'{return nil ,_df .New ("\u0069\u006ev\u0061\u006c\u0069d\u0020\u0066\u0075\u006e\u0063\u0074\u0069\u006f\u006e");};_afg :=NewPSProgram ();for {_gcgg .skipSpaces ();_badb ,_bbb :=_gcgg ._aab .Peek (2);if _bbb !=nil {if _bbb ==_c .EOF {break ;};return nil ,_bbb ;};_dc .Log .Trace ("\u0050e\u0065k\u0020\u0073\u0074\u0072\u0069\u006e\u0067\u003a\u0020\u0025\u0073",string (_badb ));if _badb [0]=='}'{_dc .Log .Trace ("\u0045\u004f\u0046 \u0066\u0075\u006e\u0063\u0074\u0069\u006f\u006e");_gcgg ._aab .ReadByte ();break ;}else if _badb [0]=='{'{_dc .Log .Trace ("\u0046u\u006e\u0063\u0074\u0069\u006f\u006e!");_acc ,_afgg :=_gcgg .parseFunction ();if _afgg !=nil {return nil ,_afgg ;};_afg .Append (_acc );}else if _ba .IsDecimalDigit (_badb [0])||(_badb [0]=='-'&&_ba .IsDecimalDigit (_badb [1])){_dc .Log .Trace ("\u002d>\u004e\u0075\u006d\u0062\u0065\u0072!");_ggca ,_fba :=_gcgg .parseNumber ();if _fba !=nil {return nil ,_fba ;};_afg .Append (_ggca );}else {_dc .Log .Trace ("\u002d>\u004fp\u0065\u0072\u0061\u006e\u0064 \u006f\u0072 \u0062\u006f\u006f\u006c\u003f");_badb ,_ =_gcgg ._aab .Peek (5);_fdc :=string (_badb );_dc .Log .Trace ("\u0050\u0065\u0065k\u0020\u0073\u0074\u0072\u003a\u0020\u0025\u0073",_fdc );if (len (_fdc )> 4)&&(_fdc [:5]=="\u0066\u0061\u006cs\u0065"){_bafd ,_caec :=_gcgg .parseBool ();if _caec !=nil {return nil ,_caec ;};_afg .Append (_bafd );}else if (len (_fdc )> 3)&&(_fdc [:4]=="\u0074\u0072\u0075\u0065"){_bff ,_fbga :=_gcgg .parseBool ();if _fbga !=nil {return nil ,_fbga ;};_afg .Append (_bff );}else {_becc ,_gbfb :=_gcgg .parseOperand ();if _gbfb !=nil {return nil ,_gbfb ;};_afg .Append (_becc );};};};return _afg ,nil ;};func (_ddg *PSParser )parseBool ()(*PSBoolean ,error ){_agb ,_ffff :=_ddg ._aab .Peek (4);if _ffff !=nil {return MakeBool (false ),_ffff ;};if (len (_agb )>=4)&&(string (_agb [:4])=="\u0074\u0072\u0075\u0065"){_ddg ._aab .Discard (4);return MakeBool (true ),nil ;};_agb ,_ffff =_ddg ._aab .Peek (5);if _ffff !=nil {return MakeBool (false ),_ffff ;};if (len (_agb )>=5)&&(string (_agb [:5])=="\u0066\u0061\u006cs\u0065"){_ddg ._aab .Discard (5);return MakeBool (false ),nil ;};return MakeBool (false ),_df .New ("\u0075n\u0065\u0078\u0070\u0065c\u0074\u0065\u0064\u0020\u0062o\u006fl\u0065a\u006e\u0020\u0073\u0074\u0072\u0069\u006eg");};func (_bdd *PSOperand )copy (_adg *PSStack )error {_feab ,_bce :=_adg .PopInteger ();if _bce !=nil {return _bce ;};if _feab < 0{return ErrRangeCheck ;};if _feab > len (*_adg ){return ErrRangeCheck ;};*_adg =append (*_adg ,(*_adg )[len (*_adg )-_feab :]...);return nil ;};
|
||||
|
||||
// DebugString returns a descriptive string representation of the stack - intended for debugging.
|
||||
func (_eeba *PSStack )DebugString ()string {_cbbb :="\u005b\u0020";for _ ,_cgec :=range *_eeba {_cbbb +=_cgec .DebugString ();_cbbb +="\u0020";};_cbbb +="\u005d";return _cbbb ;};func (_dab *PSOperand )or (_dfb *PSStack )error {_gdge ,_gaf :=_dfb .Pop ();if _gaf !=nil {return _gaf ;};_dgg ,_gaf :=_dfb .Pop ();if _gaf !=nil {return _gaf ;};if _gbf ,_ceeea :=_gdge .(*PSBoolean );_ceeea {_gafb ,_bdfg :=_dgg .(*PSBoolean );if !_bdfg {return ErrTypeCheck ;};_gaf =_dfb .Push (MakeBool (_gbf .Val ||_gafb .Val ));return _gaf ;};if _bfc ,_fbef :=_gdge .(*PSInteger );_fbef {_ddcc ,_bbf :=_dgg .(*PSInteger );if !_bbf {return ErrTypeCheck ;};_gaf =_dfb .Push (MakeInteger (_bfc .Val |_ddcc .Val ));return _gaf ;};return ErrTypeCheck ;};func (_cdb *PSOperand )Duplicate ()PSObject {_cae :=*_cdb ;return &_cae };func (_dggf *PSOperand )sin (_efg *PSStack )error {_aee ,_edcd :=_efg .PopNumberAsFloat64 ();if _edcd !=nil {return _edcd ;};_daed :=_ca .Sin (_aee *_ca .Pi /180.0);_edcd =_efg .Push (MakeReal (_daed ));return _edcd ;};
|
||||
|
||||
// Pop pops an object from the top of the stack.
|
||||
func (_deb *PSStack )Pop ()(PSObject ,error ){if len (*_deb )< 1{return nil ,ErrStackUnderflow ;};_dgdf :=(*_deb )[len (*_deb )-1];*_deb =(*_deb )[0:len (*_deb )-1];return _dgdf ,nil ;};func (_gca *PSOperand )ceiling (_fffb *PSStack )error {_abc ,_cgc :=_fffb .Pop ();if _cgc !=nil {return _cgc ;};if _gcee ,_gb :=_abc .(*PSReal );_gb {_cgc =_fffb .Push (MakeReal (_ca .Ceil (_gcee .Val )));}else if _cgad ,_bfd :=_abc .(*PSInteger );_bfd {_cgc =_fffb .Push (MakeInteger (_cgad .Val ));}else {_cgc =ErrTypeCheck ;};return _cgc ;};func (_ead *PSOperand )and (_bcg *PSStack )error {_gf ,_cde :=_bcg .Pop ();if _cde !=nil {return _cde ;};_ad ,_cde :=_bcg .Pop ();if _cde !=nil {return _cde ;};if _bca ,_fgf :=_gf .(*PSBoolean );_fgf {_ebb ,_dg :=_ad .(*PSBoolean );if !_dg {return ErrTypeCheck ;};_cde =_bcg .Push (MakeBool (_bca .Val &&_ebb .Val ));return _cde ;};if _gd ,_cdc :=_gf .(*PSInteger );_cdc {_gfe ,_ga :=_ad .(*PSInteger );if !_ga {return ErrTypeCheck ;};_cde =_bcg .Push (MakeInteger (_gd .Val &_gfe .Val ));return _cde ;};return ErrTypeCheck ;};func (_bgf *PSReal )DebugString ()string {return _b .Sprintf ("\u0072e\u0061\u006c\u003a\u0025\u002e\u0035f",_bgf .Val );};func (_cgdb *PSOperand )ne (_bbcc *PSStack )error {_bae :=_cgdb .eq (_bbcc );if _bae !=nil {return _bae ;};_bae =_cgdb .not (_bbcc );return _bae ;};const _cd =0.000001;var ErrTypeCheck =_df .New ("\u0074\u0079p\u0065\u0020\u0063h\u0065\u0063\u006b\u0020\u0065\u0072\u0072\u006f\u0072");
|
||||
|
||||
// Execute executes the program for an input parameters `objects` and returns a slice of output objects.
|
||||
func (_bf *PSExecutor )Execute (objects []PSObject )([]PSObject ,error ){for _ ,_eg :=range objects {_gc :=_bf .Stack .Push (_eg );if _gc !=nil {return nil ,_gc ;};};_db :=_bf ._f .Exec (_bf .Stack );if _db !=nil {_dc .Log .Debug ("\u0045x\u0065c\u0020\u0066\u0061\u0069\u006c\u0065\u0064\u003a\u0020\u0025\u0076",_db );return nil ,_db ;};_cfe :=[]PSObject (*_bf .Stack );_bf .Stack .Empty ();return _cfe ,nil ;};func (_ccd *PSParser )parseNumber ()(PSObject ,error ){_decc ,_cgbg :=_ba .ParseNumber (_ccd ._aab );if _cgbg !=nil {return nil ,_cgbg ;};switch _bdc :=_decc .(type ){case *_ba .PdfObjectFloat :return MakeReal (float64 (*_bdc )),nil ;case *_ba .PdfObjectInteger :return MakeInteger (int (*_bdc )),nil ;};return nil ,_b .Errorf ("\u0075n\u0068\u0061\u006e\u0064\u006c\u0065\u0064\u0020\u006e\u0075\u006db\u0065\u0072\u0020\u0074\u0079\u0070\u0065\u0020\u0025\u0054",_decc );};
|
||||
|
||||
// Parse parses the postscript and store as a program that can be executed.
|
||||
func (_bfbg *PSParser )Parse ()(*PSProgram ,error ){_bfbg .skipSpaces ();_gdc ,_bfgd :=_bfbg ._aab .Peek (2);if _bfgd !=nil {return nil ,_bfgd ;};if _gdc [0]!='{'{return nil ,_df .New ("\u0069\u006e\u0076\u0061\u006c\u0069\u0064\u0020\u0050\u0053\u0020\u0050\u0072\u006f\u0067\u0072\u0061\u006d\u0020\u006e\u006f\u0074\u0020\u0073t\u0061\u0072\u0074\u0069\u006eg\u0020\u0077i\u0074\u0068\u0020\u007b");};_ffca ,_bfgd :=_bfbg .parseFunction ();if _bfgd !=nil &&_bfgd !=_c .EOF {return nil ,_bfgd ;};return _ffca ,_bfgd ;};
|
||||
|
||||
// MakeInteger returns a new PSInteger object initialized with `val`.
|
||||
func MakeInteger (val int )*PSInteger {_ebdb :=PSInteger {};_ebdb .Val =val ;return &_ebdb };func (_egb *PSOperand )eq (_ege *PSStack )error {_edg ,_adga :=_ege .Pop ();if _adga !=nil {return _adga ;};_gfd ,_adga :=_ege .Pop ();if _adga !=nil {return _adga ;};_gfb ,_gfc :=_edg .(*PSBoolean );_efe ,_dgb :=_gfd .(*PSBoolean );if _gfc ||_dgb {var _geb error ;if _gfc &&_dgb {_geb =_ege .Push (MakeBool (_gfb .Val ==_efe .Val ));}else {_geb =_ege .Push (MakeBool (false ));};return _geb ;};var _fag float64 ;var _agd float64 ;if _bacd ,_fbd :=_edg .(*PSInteger );_fbd {_fag =float64 (_bacd .Val );}else if _ccef ,_cagg :=_edg .(*PSReal );_cagg {_fag =_ccef .Val ;}else {return ErrTypeCheck ;};if _fc ,_abcd :=_gfd .(*PSInteger );_abcd {_agd =float64 (_fc .Val );}else if _bea ,_eadc :=_gfd .(*PSReal );_eadc {_agd =_bea .Val ;}else {return ErrTypeCheck ;};if _ca .Abs (_agd -_fag )< _cd {_adga =_ege .Push (MakeBool (true ));}else {_adga =_ege .Push (MakeBool (false ));};return _adga ;};func (_bac *PSOperand )cvi (_ccg *PSStack )error {_fbc ,_cgf :=_ccg .Pop ();if _cgf !=nil {return _cgf ;};if _cdce ,_fgg :=_fbc .(*PSReal );_fgg {_cdf :=int (_cdce .Val );_cgf =_ccg .Push (MakeInteger (_cdf ));}else if _ae ,_aff :=_fbc .(*PSInteger );_aff {_ace :=_ae .Val ;_cgf =_ccg .Push (MakeInteger (_ace ));}else {return ErrTypeCheck ;};return _cgf ;};
|
||||
|
||||
// PSParser is a basic Postscript parser.
|
||||
type PSParser struct{_aab *_ee .Reader };
|
||||
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Reference in New Issue
Block a user