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Remove unneeded check in *escapeInterpreter.parseOne()

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This commit is contained in:
Roi Martin 2017-02-12 15:26:07 +01:00
parent e27f247a3e
commit 139487f578
1 changed files with 5 additions and 8 deletions
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13
escape.go
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@ -76,14 +76,16 @@ func (ei *escapeInterpreter) reset() {
// of an escape sequence, and as such should not be printed verbatim. Otherwise, // of an escape sequence, and as such should not be printed verbatim. Otherwise,
// it's not an escape sequence. // it's not an escape sequence.
func (ei *escapeInterpreter) parseOne(ch rune) (isEscape bool, err error) { func (ei *escapeInterpreter) parseOne(ch rune) (isEscape bool, err error) {
// Sanity checks to make sure we're not parsing something totally bogus. // Sanity checks
if len(ei.csiParam) > 20 { if len(ei.csiParam) > 20 {
return false, errCSITooLong return false, errCSITooLong
} }
if len(ei.csiParam) > 0 && len(ei.csiParam[len(ei.csiParam)-1]) > 255 { if len(ei.csiParam) > 0 && len(ei.csiParam[len(ei.csiParam)-1]) > 255 {
return false, errCSITooLong return false, errCSITooLong
} }
ei.curch = ch ei.curch = ch
switch ei.state { switch ei.state {
case stateNone: case stateNone:
if ch == 0x1b { if ch == 0x1b {
@ -117,16 +119,11 @@ func (ei *escapeInterpreter) parseOne(ch rune) (isEscape bool, err error) {
ei.csiParam = append(ei.csiParam, "") ei.csiParam = append(ei.csiParam, "")
return true, nil return true, nil
case ch == 'm': case ch == 'm':
if len(ei.csiParam) < 1 {
return false, errCSIParseError
}
var err error var err error
switch ei.mode { switch ei.mode {
case OutputMode(OutputNormal): case OutputNormal:
err = ei.outputNormal() err = ei.outputNormal()
case OutputMode(Output256): case Output256:
err = ei.output256() err = ei.output256()
} }
if err != nil { if err != nil {