mirror of https://github.com/liamg/aminal.git
84 lines
2.1 KiB
Go
84 lines
2.1 KiB
Go
package terminal
|
|
|
|
import "fmt"
|
|
|
|
// https://www.xfree86.org/4.8.0/ctlseqs.html
|
|
// https://vt100.net/docs/vt100-ug/chapter3.html
|
|
|
|
var ansiSequenceMap = map[rune]escapeSequenceHandler{
|
|
'[': csiHandler,
|
|
']': oscHandler,
|
|
'7': saveCursorHandler,
|
|
'8': restoreCursorHandler,
|
|
'D': indexHandler,
|
|
'E': nextLineHandler, // NEL
|
|
'H': tabSetHandler, // HTS
|
|
'M': reverseIndexHandler,
|
|
'P': sixelHandler,
|
|
'c': risHandler, // RIS
|
|
'#': screenStateHandler,
|
|
'(': scs0Handler, // select character set into G0
|
|
')': scs1Handler, // select character set into G1
|
|
'*': swallowHandler(1), // character set bullshit
|
|
'+': swallowHandler(1), // character set bullshit
|
|
'>': swallowHandler(0), // numeric char selection //@todo
|
|
'=': swallowHandler(0), // alt char selection //@todo
|
|
}
|
|
|
|
func swallowHandler(n int) func(pty chan rune, terminal *Terminal) error {
|
|
return func(pty chan rune, terminal *Terminal) error {
|
|
for i := 0; i < n; i++ {
|
|
<-pty
|
|
}
|
|
return nil
|
|
}
|
|
}
|
|
|
|
func risHandler(pty chan rune, terminal *Terminal) error {
|
|
terminal.ActiveBuffer().Clear()
|
|
return nil
|
|
}
|
|
|
|
func indexHandler(pty chan rune, terminal *Terminal) error {
|
|
terminal.ActiveBuffer().Index()
|
|
return nil
|
|
}
|
|
|
|
func reverseIndexHandler(pty chan rune, terminal *Terminal) error {
|
|
terminal.ActiveBuffer().ReverseIndex()
|
|
return nil
|
|
}
|
|
|
|
func saveCursorHandler(pty chan rune, terminal *Terminal) error {
|
|
terminal.ActiveBuffer().SaveCursor()
|
|
return nil
|
|
}
|
|
|
|
func restoreCursorHandler(pty chan rune, terminal *Terminal) error {
|
|
terminal.ActiveBuffer().RestoreCursor()
|
|
return nil
|
|
}
|
|
|
|
func ansiHandler(pty chan rune, terminal *Terminal) error {
|
|
// if the byte is an escape character, read the next byte to determine which one
|
|
b := <-pty
|
|
|
|
handler, ok := ansiSequenceMap[b]
|
|
if ok {
|
|
// terminal.logger.Debugf("Handling ansi sequence %c", b)
|
|
return handler(pty, terminal)
|
|
}
|
|
|
|
return fmt.Errorf("Unknown ANSI control sequence byte: 0x%02X [%v]", b, string(b))
|
|
}
|
|
|
|
func nextLineHandler(pty chan rune, terminal *Terminal) error {
|
|
terminal.ActiveBuffer().NewLineEx(true)
|
|
return nil
|
|
}
|
|
|
|
func tabSetHandler(pty chan rune, terminal *Terminal) error {
|
|
terminal.terminalState.TabSetAtCursor()
|
|
return nil
|
|
}
|