110 lines
2.5 KiB
Go
110 lines
2.5 KiB
Go
package termutil
|
|
|
|
func (t *Terminal) handleANSI(readChan chan MeasuredRune) (renderRequired bool) {
|
|
// if the byte is an escape character, read the next byte to determine which one
|
|
r := <-readChan
|
|
|
|
t.log("ANSI SEQ %c 0x%X", r.Rune, r.Rune)
|
|
|
|
t.mu.Lock()
|
|
defer t.mu.Unlock()
|
|
|
|
switch r.Rune {
|
|
case '[':
|
|
return t.handleCSI(readChan)
|
|
case ']':
|
|
return t.handleOSC(readChan)
|
|
case '(':
|
|
return t.handleSCS0(readChan) // select character set into G0
|
|
case ')':
|
|
return t.handleSCS1(readChan) // select character set into G1
|
|
case '*':
|
|
return swallowHandler(1)(readChan) // character set bullshit
|
|
case '+':
|
|
return swallowHandler(1)(readChan) // character set bullshit
|
|
case '>':
|
|
return swallowHandler(0)(readChan) // numeric char selection
|
|
case '=':
|
|
return swallowHandler(0)(readChan) // alt char selection
|
|
case '7':
|
|
t.GetActiveBuffer().saveCursor()
|
|
case '8':
|
|
t.GetActiveBuffer().restoreCursor()
|
|
case 'D':
|
|
t.GetActiveBuffer().index()
|
|
case 'E':
|
|
t.GetActiveBuffer().newLineEx(true)
|
|
case 'H':
|
|
t.GetActiveBuffer().tabSetAtCursor()
|
|
case 'M':
|
|
t.GetActiveBuffer().reverseIndex()
|
|
case 'P': // sixel
|
|
t.handleSixel(readChan)
|
|
case 'c':
|
|
t.GetActiveBuffer().clear()
|
|
case '#':
|
|
return t.handleScreenState(readChan)
|
|
case '^':
|
|
return t.handlePrivacyMessage(readChan)
|
|
default:
|
|
t.log("UNKNOWN ESCAPE SEQUENCE: 0x%X", r.Rune)
|
|
return false
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
func swallowHandler(size int) func(pty chan MeasuredRune) bool {
|
|
return func(pty chan MeasuredRune) bool {
|
|
for i := 0; i < size; i++ {
|
|
<-pty
|
|
}
|
|
return false
|
|
}
|
|
}
|
|
|
|
func (t *Terminal) handleScreenState(readChan chan MeasuredRune) bool {
|
|
b := <-readChan
|
|
switch b.Rune {
|
|
case '8': // DECALN -- Screen Alignment Pattern
|
|
|
|
// hide cursor?
|
|
buffer := t.GetActiveBuffer()
|
|
buffer.resetVerticalMargins(uint(buffer.viewHeight))
|
|
buffer.SetScrollOffset(0)
|
|
|
|
// Fill the whole screen with E's
|
|
count := buffer.ViewHeight() * buffer.ViewWidth()
|
|
for count > 0 {
|
|
buffer.write(MeasuredRune{Rune: 'E', Width: 1})
|
|
count--
|
|
if count > 0 && !buffer.modes.AutoWrap && count%buffer.ViewWidth() == 0 {
|
|
buffer.index()
|
|
buffer.carriageReturn()
|
|
}
|
|
}
|
|
// restore cursor
|
|
buffer.setPosition(0, 0)
|
|
default:
|
|
return false
|
|
}
|
|
return true
|
|
}
|
|
|
|
func (t *Terminal) handlePrivacyMessage(readChan chan MeasuredRune) bool {
|
|
isEscaped := false
|
|
for {
|
|
b := <-readChan
|
|
if b.Rune == 0x18 /*CAN*/ || b.Rune == 0x1a /*SUB*/ || (b.Rune == 0x5c /*backslash*/ && isEscaped) {
|
|
break
|
|
}
|
|
if isEscaped {
|
|
isEscaped = false
|
|
} else if b.Rune == 0x1b {
|
|
isEscaped = true
|
|
continue
|
|
}
|
|
}
|
|
return false
|
|
}
|