mirror of
https://github.com/unidoc/unipdf.git
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19fd98d667
As the package was growing large, there is a need to clean up. Testing to refactor into a core (basic pdf parsing and primitive objects) and a higher level model package.
65 lines
1.2 KiB
Go
65 lines
1.2 KiB
Go
/*
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* This file is subject to the terms and conditions defined in
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* file 'LICENSE.md', which is part of this source code package.
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*/
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package core
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func IsWhiteSpace(ch byte) bool {
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// Table 1 white-space characters (7.2.2 Character Set)
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// spaceCharacters := string([]byte{0x00, 0x09, 0x0A, 0x0C, 0x0D, 0x20})
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if (ch == 0x00) || (ch == 0x09) || (ch == 0x0A) || (ch == 0x0C) || (ch == 0x0D) || (ch == 0x20) {
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return true
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} else {
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return false
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}
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}
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func IsDecimalDigit(c byte) bool {
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if c >= '0' && c <= '9' {
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return true
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} else {
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return false
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}
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}
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func IsOctalDigit(c byte) bool {
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if c >= '0' && c <= '7' {
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return true
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} else {
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return false
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}
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}
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// Regular characters that are outside the range EXCLAMATION MARK(21h)
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// (!) to TILDE (7Eh) (~) should be written using the hexadecimal notation.
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func IsPrintable(char byte) bool {
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if char < 0x21 || char > 0x7E {
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return false
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}
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return true
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}
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func IsDelimiter(char byte) bool {
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if char == '(' || char == ')' {
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return true
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}
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if char == '<' || char == '>' {
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return true
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}
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if char == '[' || char == ']' {
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return true
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}
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if char == '{' || char == '}' {
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return true
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}
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if char == '/' {
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return true
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}
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if char == '%' {
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return true
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}
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return false
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}
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