waveterm/xterm.js
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Implement CAN (Cancel, ^X)

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This helps partially pass t0014-CAN.in, it won't work 100% however
due to the very complex parsing logic of vanilla xterm that
gnome-terminal doesn't even seem to match. xterm's source seems to
have multiple ignore cases for a set of characters such that an
escape sequence like \e!!!!!! prints nothing as the ! continually
gets ignored. Our current logic is we ignore the escape sequence
immediately in this case and print the !.
This commit is contained in:
Daniel Imms
2017-01-20 23:03:38 -08:00
parent 99fbcd3d65
commit 1b344ce789
1 changed files with 5 additions and 2 deletions
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src/Parser.ts
+5 -2
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@@ -74,6 +74,7 @@ escapedStateHandler['%'] = (parser, terminal) => {
parser.setState(ParserState.NORMAL);
parser.skipNextChar();
};
escapedStateHandler[C0.CAN] = (parser) => parser.setState(ParserState.NORMAL);
const csiParamStateHandler: {[key: string]: (parser: Parser) => void} = {};
csiParamStateHandler['?'] = (parser) => parser.setPrefix('?');
@@ -94,8 +95,9 @@ csiParamStateHandler['"'] = (parser) => parser.setPostfix('"');
csiParamStateHandler[' '] = (parser) => parser.setPostfix(' ');
csiParamStateHandler['\''] = (parser) => parser.setPostfix('\'');
csiParamStateHandler[';'] = (parser) => parser.finalizeParam();
csiParamStateHandler[C0.CAN] = (parser) => parser.setState(ParserState.NORMAL);
const csiStateHandler: {[key: string]: (handler: IInputHandler, params: number[], prefix: string, postfix: string) => void} = {};
const csiStateHandler: {[key: string]: (handler: IInputHandler, params: number[], prefix: string, postfix: string, parser: Parser) => void} = {};
csiStateHandler['@'] = (handler, params, prefix) => handler.insertChars(params);
csiStateHandler['A'] = (handler, params, prefix) => handler.cursorUp(params);
csiStateHandler['B'] = (handler, params, prefix) => handler.cursorDown(params);
@@ -144,6 +146,7 @@ csiStateHandler['q'] = (handler, params, prefix, postfix) => {
csiStateHandler['r'] = (handler, params) => handler.setScrollRegion(params);
csiStateHandler['s'] = (handler, params) => handler.saveCursor(params);
csiStateHandler['u'] = (handler, params) => handler.restoreCursor(params);
csiStateHandler[C0.CAN] = (handler, params, prefix, postfix, parser) => parser.setState(ParserState.NORMAL);
// TODO: Many codes/charsets appear to not be supported
// See: http://invisible-island.net/xterm/ctlseqs/ctlseqs.html
@@ -477,7 +480,7 @@ export class Parser {
case ParserState.CSI:
if (ch in csiStateHandler) {
csiStateHandler[ch](this._inputHandler, this._terminal.params, this._terminal.prefix, this._terminal.postfix);
csiStateHandler[ch](this._inputHandler, this._terminal.params, this._terminal.prefix, this._terminal.postfix, this);
} else {
this._terminal.error('Unknown CSI code: %s.', ch);
}