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//opt/alt/alt-nodejs22/root/usr/lib/node_modules/npm/node_modules/postcss-selector-parser/dist/util/unesc.js
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"use strict"; exports.__esModule = true; exports["default"] = unesc; // Many thanks for this post which made this migration much easier. // https://mathiasbynens.be/notes/css-escapes /** * * @param {string} str * @returns {[string, number]|undefined} */ function gobbleHex(str) { var lower = str.toLowerCase(); var hex = ''; var spaceTerminated = false; for (var i = 0; i < 6 && lower[i] !== undefined; i++) { var code = lower.charCodeAt(i); // check to see if we are dealing with a valid hex char [a-f|0-9] var valid = code >= 97 && code <= 102 || code >= 48 && code <= 57; // https://drafts.csswg.org/css-syntax/#consume-escaped-code-point spaceTerminated = code === 32; if (!valid) { break; } hex += lower[i]; } if (hex.length === 0) { return undefined; } var codePoint = parseInt(hex, 16); var isSurrogate = codePoint >= 0xD800 && codePoint <= 0xDFFF; // Add special case for // "If this number is zero, or is for a surrogate, or is greater than the maximum allowed code point" // https://drafts.csswg.org/css-syntax/#maximum-allowed-code-point if (isSurrogate || codePoint === 0x0000 || codePoint > 0x10FFFF) { return ["\uFFFD", hex.length + (spaceTerminated ? 1 : 0)]; } return [String.fromCodePoint(codePoint), hex.length + (spaceTerminated ? 1 : 0)]; } var CONTAINS_ESCAPE = /\\/; function unesc(str) { var needToProcess = CONTAINS_ESCAPE.test(str); if (!needToProcess) { return str; } var ret = ""; for (var i = 0; i < str.length; i++) { if (str[i] === "\\") { var gobbled = gobbleHex(str.slice(i + 1, i + 7)); if (gobbled !== undefined) { ret += gobbled[0]; i += gobbled[1]; continue; } // Retain a pair of \\ if double escaped `\\\\` // https://github.com/postcss/postcss-selector-parser/commit/268c9a7656fb53f543dc620aa5b73a30ec3ff20e if (str[i + 1] === "\\") { ret += "\\"; i++; continue; } // if \\ is at the end of the string retain it // https://github.com/postcss/postcss-selector-parser/commit/01a6b346e3612ce1ab20219acc26abdc259ccefb if (str.length === i + 1) { ret += str[i]; } continue; } ret += str[i]; } return ret; } module.exports = exports.default;
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