1 files changed, 116 insertions, 0 deletions
diff --git a/data/extensions/uBlock0@raymondhill.net/js/arglist-parser.js b/data/extensions/uBlock0@raymondhill.net/js/arglist-parser.js
new file mode 100644
index 0000000..708029e
--- /dev/null
+++ b/data/extensions/uBlock0@raymondhill.net/js/arglist-parser.js
@@ -0,0 +1,116 @@
+/*******************************************************************************
+
+    uBlock Origin - a comprehensive, efficient content blocker
+    Copyright (C) 2020-present Raymond Hill
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see {http://www.gnu.org/licenses/}.
+
+    Home: https://github.com/gorhill/uBlock
+*/
+
+/******************************************************************************/
+
+export class ArglistParser {
+    constructor(separatorChar = ',', mustQuote = false) {
+        this.separatorChar = this.actualSeparatorChar = separatorChar;
+        this.separatorCode = this.actualSeparatorCode = separatorChar.charCodeAt(0);
+        this.mustQuote = mustQuote;
+        this.quoteBeg = 0; this.quoteEnd = 0;
+        this.argBeg = 0; this.argEnd = 0;
+        this.separatorBeg = 0; this.separatorEnd = 0;
+        this.transform = false;
+        this.failed = false;
+        this.reWhitespaceStart = /^\s+/;
+        this.reWhitespaceEnd = /(?:^|\S)(\s+)$/;
+        this.reOddTrailingEscape = /(?:^|[^\\])(?:\\\\)*\\$/;
+        this.reTrailingEscapeChars = /\\+$/;
+    }
+    nextArg(pattern, beg = 0) {
+        const len = pattern.length;
+        this.quoteBeg = beg + this.leftWhitespaceCount(pattern.slice(beg));
+        this.failed = false;
+        const qc = pattern.charCodeAt(this.quoteBeg);
+        if ( qc === 0x22 /* " */ || qc === 0x27 /* ' */ || qc === 0x60 /* ` */ ) {
+            this.indexOfNextArgSeparator(pattern, qc);
+            if ( this.argEnd !== len ) {
+                this.quoteEnd = this.argEnd + 1;
+                this.separatorBeg = this.separatorEnd = this.quoteEnd;
+                this.separatorEnd += this.leftWhitespaceCount(pattern.slice(this.quoteEnd));
+                if ( this.separatorEnd === len ) { return this; }
+                if ( pattern.charCodeAt(this.separatorEnd) === this.separatorCode ) {
+                    this.separatorEnd += 1;
+                    return this;
+                }
+            }
+        }
+        this.indexOfNextArgSeparator(pattern, this.separatorCode);
+        this.separatorBeg = this.separatorEnd = this.argEnd;
+        if ( this.separatorBeg < len ) {
+            this.separatorEnd += 1;
+        }
+        this.argEnd -= this.rightWhitespaceCount(pattern.slice(0, this.separatorBeg));
+        this.quoteEnd = this.argEnd;
+        if ( this.mustQuote ) {
+            this.failed = true;
+        }
+        return this;
+    }
+    normalizeArg(s, char = '') {
+        if ( char === '' ) { char = this.actualSeparatorChar; }
+        let out = '';
+        let pos = 0;
+        while ( (pos = s.lastIndexOf(char)) !== -1 ) {
+            out = s.slice(pos) + out;
+            s = s.slice(0, pos);
+            const match = this.reTrailingEscapeChars.exec(s);
+            if ( match === null ) { continue; }
+            const tail = (match[0].length & 1) !== 0
+                ? match[0].slice(0, -1)
+                : match[0];
+            out = tail + out;
+            s = s.slice(0, -match[0].length);
+        }
+        if ( out === '' ) { return s; }
+        return s + out;
+    }
+    leftWhitespaceCount(s) {
+        const match = this.reWhitespaceStart.exec(s);
+        return match === null ? 0 : match[0].length;
+    }
+    rightWhitespaceCount(s) {
+        const match = this.reWhitespaceEnd.exec(s);
+        return match === null ? 0 : match[1].length;
+    }
+    indexOfNextArgSeparator(pattern, separatorCode) {
+        this.argBeg = this.argEnd = separatorCode !== this.separatorCode
+            ? this.quoteBeg + 1
+            : this.quoteBeg;
+        this.transform = false;
+        if ( separatorCode !== this.actualSeparatorCode ) {
+            this.actualSeparatorCode = separatorCode;
+            this.actualSeparatorChar = String.fromCharCode(separatorCode);
+        }
+        while ( this.argEnd < pattern.length ) {
+            const pos = pattern.indexOf(this.actualSeparatorChar, this.argEnd);
+            if ( pos === -1 ) {
+                return (this.argEnd = pattern.length);
+            }
+            if ( this.reOddTrailingEscape.test(pattern.slice(0, pos)) === false ) {
+                return (this.argEnd = pos);
+            }
+            this.transform = true;
+            this.argEnd = pos + 1;
+        }
+    }
+}