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Perf: improve adguard filter parsing speed

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SukkaW 2025-07-27 23:50:52 +08:00
parent 31b36ee8f1
commit e9567f6488
1 changed files with 11 additions and 10 deletions
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21
Build/lib/parse-filter/filters.ts
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@ -165,7 +165,7 @@ const kwfilter = createKeywordFilter([
'(',
']',
')',
',',
',', // $3p,doc
'#',
'%',
'&',
@ -208,13 +208,14 @@ export class AdGuardFilterIgnoreUnsupportedLinesStream extends TransformStream<s
constructor() {
super({
transform(line, controller) {
let firstCharCode = line.charCodeAt(0);
if (
// bail out path-like/cosmetic very early, even before trim
firstCharCode === 47 // /
|| firstCharCode === 35 // #
// doesn't include
!line.includes('.') // rule with out dot can not be a domain
// includes
|| kwfilter(line)
// note that this can only excludes $redirect but not $3p,redirect, so we still need to parse it
// this is only an early bail out
|| !line.includes('.') // rule with out dot can not be a domain
|| kwfilter(line) // filter out some symbols/modifiers
) {
return;
}
@ -225,7 +226,7 @@ export class AdGuardFilterIgnoreUnsupportedLinesStream extends TransformStream<s
return;
}
const firstCharCode = line.charCodeAt(0);
firstCharCode = line.charCodeAt(0);
const lastCharCode = line.charCodeAt(line.length - 1);
if (
@ -273,7 +274,7 @@ export function parse(line: string, result: [string, ParseType], includeThirdPar
// return result;
// }
const firstCharCode = line.charCodeAt(0);
// const firstCharCode = line.charCodeAt(0);
// const lastCharCode = line.charCodeAt(line.length - 1);
// if (
@ -401,7 +402,7 @@ export function parse(line: string, result: [string, ParseType], includeThirdPar
let includeAllSubDomain = false;
if (
firstCharCode === 64 // 64 `@`
line.charCodeAt(0) === 64 // 64 `@`
&& line.charCodeAt(1) === 64 // 64 `@`
) {
sliceStart += 2;
@ -430,7 +431,7 @@ export function parse(line: string, result: [string, ParseType], includeThirdPar
break;
case 46: { /** | */ // line.startsWith('@@.') || line.startsWith('.')
case 46: { /** . */ // line.startsWith('@@.') || line.startsWith('.')
/**
* `.ay.delivery^`
* `.m.bookben.com^`