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Ref: https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h3-C1-_8-Bit_-Control-Characters Fixes #138
70 lines
1.4 KiB
Go
70 lines
1.4 KiB
Go
package twin
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type KeyCode uint16
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const (
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KeyEscape KeyCode = iota
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KeyEnter
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KeyBackspace
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KeyDelete
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KeyUp
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KeyDown
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KeyRight
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KeyLeft
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KeyAltUp
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KeyAltDown
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KeyAltRight
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KeyAltLeft
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KeyHome
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KeyEnd
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KeyPgUp
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KeyPgDown
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)
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// Map incoming escape keystrokes to keycodes, used in consumeEncodedEvent() in
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// screen.go.
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//
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// NOTE: If you put a single ESC character in here ('\x1b') it will be consumed
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// by itself rather than as part of the sequence it belongs to, and parsing of
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// all special sequences starting with ESC will break down.
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//
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// FIXME: Write a test preventing that from happening.
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var escapeSequenceToKeyCode = map[string]KeyCode{
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// NOTE: Please keep this list in the same order as the KeyCode const()
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// section above.
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// KeyEscape intentionally left out because it's too short, see comment
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// above.
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// KeyEnter intentionally left out because it's too short, see comment
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// above.
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"\x7f": KeyBackspace,
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"\x1b[3~": KeyDelete,
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"\x1b[A": KeyUp,
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"\x1b[B": KeyDown,
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"\x1b[C": KeyRight,
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"\x1b[D": KeyLeft,
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// Ref: https://github.com/walles/moar/issues/138#issuecomment-1579199274
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"\x1bOA": KeyUp,
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"\x1bOB": KeyDown,
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"\x1bOC": KeyRight,
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"\x1bOD": KeyLeft,
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"\x1b\x1b[A": KeyAltUp, // Alt + up arrow
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"\x1b\x1b[B": KeyAltDown, // Alt + down arrow
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"\x1b\x1b[C": KeyAltRight, // Alt + right arrow
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"\x1b\x1b[D": KeyAltLeft, // Alt + left arrow
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"\x1b[H": KeyHome,
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"\x1b[F": KeyEnd,
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"\x1b[5~": KeyPgUp,
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"\x1b[6~": KeyPgDown,
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}
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