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basic read ahead optimization

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This commit is contained in:
Jörg Breitbart
2026-04-24 16:49:06 +02:00
parent 849a9a53ca
commit 8e12e69e4e
2 changed files with 16 additions and 56 deletions
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src/common/parser/EscapeSequenceParser.ts
+9 -9
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@@ -886,16 +886,16 @@ export class EscapeSequenceParser extends Disposable implements IEscapeSequenceP
this._apcParser.start(this._collect << 8 | code);
break;
case ParserAction.APC_PUT:
// FIXME: this is wrong, must be 00/08 .. 00/13, 02/00 .. 07/14 + NON_ASCII_PRINTABLE
// inner loop - exit APC_PUT: 0x18, 0x1a, 0x1b, 0x9c
// for (let j = i + 1; ; ++j) {
// if (j >= length || (code = data[j]) === 0x18 || code === 0x1a || code === 0x1b || code === 0x9c || (code > 0x7f && code < NON_ASCII_PRINTABLE)) {
// this._apcParser.put(data, i, j);
// i = j - 1;
// break;
// }
// }
this._apcParser.put(data, i, i+1);
// allowed: 00/08 .. 00/13, 02/00 .. 07/14 + NON_ASCII_PRINTABLE
// FIXME: 00/08 .. 00/13 currently handled by second APC_PUT invocation
for (let j = i + 1; ; ++j) {
if (j >= length || data[j] < 0x20 || (data[j] >= 0x7f && data[j] < NON_ASCII_PRINTABLE)) {
this._apcParser.put(data, i, j);
i = j - 1;
break;
}
}
break;
case ParserAction.APC_END:
handlerResult = this._apcParser.end(code !== 0x18 && code !== 0x1a);