crypto-es/dist/enc-base64url.cjs.map

A cryptography algorithms library compatible with ES6 and TypeScript

{"version":3,"file":"enc-base64url.cjs","names":["base64Chars: string[]","parseLoop","Base64url: Base64urlEncoder"],"sources":["../src/enc-base64url.ts"],"sourcesContent":["import {\n  WordArray,\n  Encoder,\n} from './core';\nimport {\n  parseLoop,\n} from './enc-base64';\n\n/**\n * Extended encoder interface for Base64url with URL-safe option\n */\ninterface Base64urlEncoder extends Encoder {\n  /**\n   * Converts a word array to a Base64url string\n   * @param wordArray - The word array to convert\n   * @param urlSafe - Whether to use URL-safe encoding (default: true)\n   * @returns The Base64url string\n   */\n  stringify(wordArray: WordArray, urlSafe?: boolean): string;\n  \n  /**\n   * Converts a Base64url string to a word array\n   * @param base64Str - The Base64url string to parse\n   * @param urlSafe - Whether to use URL-safe decoding (default: true)\n   * @returns The word array\n   */\n  parse(base64Str: string, urlSafe?: boolean): WordArray;\n}\n\n/**\n * Base64url encoding strategy implementation.\n * @private\n */\nclass Base64urlImpl implements Base64urlEncoder {\n  /** Standard Base64 character map */\n  private _map: string = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';\n  \n  /** URL-safe Base64 character map (no padding) */\n  private _safeMap: string = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_';\n  \n  /** Reverse character map for decoding */\n  private _reverseMap?: number[];\n\n  /**\n   * Converts a word array to a Base64url string.\n   * \n   * @param wordArray - The word array to convert\n   * @param urlSafe - Whether to use URL-safe encoding (default: true)\n   * @returns The Base64url string representation\n   * @example\n   * ```javascript\n   * // URL-safe encoding (default)\n   * const base64urlString = Base64url.stringify(wordArray);\n   * \n   * // Standard Base64 encoding\n   * const base64String = Base64url.stringify(wordArray, false);\n   * ```\n   */\n  stringify(wordArray: WordArray, urlSafe: boolean = true): string {\n    // Shortcuts\n    const { words, sigBytes } = wordArray;\n    const map = urlSafe ? this._safeMap : this._map;\n\n    // Clamp excess bits\n    wordArray.clamp();\n\n    // Convert\n    const base64Chars: string[] = [];\n    for (let i = 0; i < sigBytes; i += 3) {\n      const byte1 = (words[i >>> 2] >>> (24 - (i % 4) * 8)) & 0xff;\n      const byte2 = (words[(i + 1) >>> 2] >>> (24 - ((i + 1) % 4) * 8)) & 0xff;\n      const byte3 = (words[(i + 2) >>> 2] >>> (24 - ((i + 2) % 4) * 8)) & 0xff;\n\n      const triplet = (byte1 << 16) | (byte2 << 8) | byte3;\n\n      for (let j = 0; (j < 4) && (i + j * 0.75 < sigBytes); j += 1) {\n        base64Chars.push(map.charAt((triplet >>> (6 * (3 - j))) & 0x3f));\n      }\n    }\n\n    // Add padding (only for standard Base64)\n    const paddingChar = map.charAt(64);\n    if (paddingChar) {\n      while (base64Chars.length % 4) {\n        base64Chars.push(paddingChar);\n      }\n    }\n\n    return base64Chars.join('');\n  }\n\n  /**\n   * Converts a Base64url string to a word array.\n   * \n   * @param base64Str - The Base64url string to parse\n   * @param urlSafe - Whether to use URL-safe decoding (default: true)\n   * @returns The word array representation\n   * @example\n   * ```javascript\n   * // URL-safe decoding (default)\n   * const wordArray = Base64url.parse(base64urlString);\n   * \n   * // Standard Base64 decoding\n   * const wordArray = Base64url.parse(base64String, false);\n   * ```\n   */\n  parse(base64Str: string, urlSafe: boolean = true): WordArray {\n    // Shortcuts\n    let base64StrLength = base64Str.length;\n    const map = urlSafe ? this._safeMap : this._map;\n    let reverseMap = this._reverseMap;\n\n    // Build reverse map if not cached\n    if (!reverseMap) {\n      this._reverseMap = [];\n      reverseMap = this._reverseMap;\n      for (let j = 0; j < map.length; j += 1) {\n        reverseMap[map.charCodeAt(j)] = j;\n      }\n    }\n\n    // Ignore padding\n    const paddingChar = map.charAt(64);\n    if (paddingChar) {\n      const paddingIndex = base64Str.indexOf(paddingChar);\n      if (paddingIndex !== -1) {\n        base64StrLength = paddingIndex;\n      }\n    }\n\n    // Convert\n    return parseLoop(base64Str, base64StrLength, reverseMap);\n  }\n}\n\n/**\n * Base64url encoding strategy.\n * Provides URL-safe Base64 encoding/decoding that can be used in URLs without escaping.\n * \n * The URL-safe variant:\n * - Uses '-' instead of '+'\n * - Uses '_' instead of '/'\n * - Omits padding '=' characters\n * \n * @example\n * ```javascript\n * // URL-safe encoding (default)\n * const urlSafeString = Base64url.stringify(wordArray);\n * const wordArray = Base64url.parse(urlSafeString);\n * \n * // Standard Base64 encoding\n * const base64String = Base64url.stringify(wordArray, false);\n * const wordArray = Base64url.parse(base64String, false);\n * ```\n */\nexport const Base64url: Base64urlEncoder = new Base64urlImpl();"],"mappings":";;;;;;;AAiCA,IAAM,gBAAN,MAAgD;;CAE9C,AAAQ,OAAe;;CAGvB,AAAQ,WAAmB;;CAG3B,AAAQ;;;;;;;;;;;;;;;;CAiBR,UAAU,WAAsB,UAAmB,MAAc;EAE/D,MAAM,EAAE,OAAO,UAAU,GAAG;EAC5B,MAAM,MAAM,UAAU,KAAK,WAAW,KAAK;AAG3C,YAAU;EAGV,MAAMA,cAAwB,EAAE;AAChC,OAAK,IAAI,IAAI,GAAG,IAAI,UAAU,KAAK,GAAG;GACpC,MAAM,QAAS,MAAM,MAAM,OAAQ,KAAM,IAAI,IAAK,IAAM;GACxD,MAAM,QAAS,MAAO,IAAI,MAAO,OAAQ,MAAO,IAAI,KAAK,IAAK,IAAM;GACpE,MAAM,QAAS,MAAO,IAAI,MAAO,OAAQ,MAAO,IAAI,KAAK,IAAK,IAAM;GAEpE,MAAM,UAAW,SAAS,KAAO,SAAS,IAAK;AAE/C,QAAK,IAAI,IAAI,GAAI,IAAI,KAAO,IAAI,IAAI,MAAO,UAAW,KAAK,EACzD,aAAY,KAAK,IAAI,OAAQ,YAAa,KAAK,IAAI,KAAO;EAE7D;EAGD,MAAM,cAAc,IAAI,OAAO;AAC/B,MAAI,YACF,QAAO,YAAY,SAAS,EAC1B,aAAY,KAAK;AAIrB,SAAO,YAAY,KAAK;CACzB;;;;;;;;;;;;;;;;CAiBD,MAAM,WAAmB,UAAmB,MAAiB;EAE3D,IAAI,kBAAkB,UAAU;EAChC,MAAM,MAAM,UAAU,KAAK,WAAW,KAAK;EAC3C,IAAI,aAAa,KAAK;AAGtB,MAAI,CAAC,YAAY;AACf,QAAK,cAAc,EAAE;AACrB,gBAAa,KAAK;AAClB,QAAK,IAAI,IAAI,GAAG,IAAI,IAAI,QAAQ,KAAK,EACnC,YAAW,IAAI,WAAW,MAAM;EAEnC;EAGD,MAAM,cAAc,IAAI,OAAO;AAC/B,MAAI,aAAa;GACf,MAAM,eAAe,UAAU,QAAQ;AACvC,OAAI,iBAAiB,GACnB,mBAAkB;EAErB;AAGD,SAAOC,6BAAU,WAAW,iBAAiB;CAC9C;AACF;;;;;;;;;;;;;;;;;;;;;AAsBD,MAAaC,YAA8B,IAAI"}