mirror of https://github.com/liamg/aminal.git
77 lines
1.6 KiB
Go
77 lines
1.6 KiB
Go
package terminal
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import (
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"context"
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"time"
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)
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// Wish list here: http://invisible-island.net/xterm/ctlseqs/ctlseqs.html
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type TerminalCharSet int
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type escapeSequenceHandler func(pty chan rune, terminal *Terminal) error
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var escapeSequenceMap = map[rune]escapeSequenceHandler{
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0x1b: ansiHandler,
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}
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func (terminal *Terminal) processInput(ctx context.Context, pty chan rune) {
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// https://en.wikipedia.org/wiki/ANSI_escape_code
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for {
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select {
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case <-terminal.pauseChan:
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// @todo alert user when terminal is suspended
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terminal.logger.Debugf("Terminal suspended")
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<-terminal.resumeChan
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case <-ctx.Done():
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break
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default:
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}
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if terminal.config.Slomo {
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time.Sleep(time.Millisecond * 100)
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}
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b := <-pty
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handler, ok := escapeSequenceMap[b]
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if ok {
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if err := handler(pty, terminal); err != nil {
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terminal.logger.Errorf("Error handling escape sequence: %s", err)
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}
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continue
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}
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terminal.logger.Debugf("Received character 0x%X: %q", b, string(b))
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switch b {
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case 0x0a, 0x0c, 0x0b: // LF, FF, VT
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terminal.ActiveBuffer().NewLine()
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case 0x0d: // CR
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terminal.ActiveBuffer().CarriageReturn()
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case 0x08: // BS
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// backspace
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terminal.ActiveBuffer().Backspace()
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case 0x07: // BEL
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// @todo ring bell - flash red or some shit?
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case 0x05: // ENQ
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terminal.logger.Errorf("Received ENQ!")
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case 0xe, 0xf:
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terminal.logger.Errorf("Received SI/SO")
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case 0x09:
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terminal.logger.Errorf("Received TAB")
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default:
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if b >= 0x20 {
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terminal.ActiveBuffer().Write(b)
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} else {
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terminal.logger.Error("Non-readable rune received: 0x%X", b)
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}
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}
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}
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}
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