创建

node_modules/crypto-js/enc-base64url.js

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+;(function (root, factory) {
+	if (typeof exports === "object") {
+		// CommonJS
+		module.exports = exports = factory(require("./core"));
+	}
+	else if (typeof define === "function" && define.amd) {
+		// AMD
+		define(["./core"], factory);
+	}
+	else {
+		// Global (browser)
+		factory(root.CryptoJS);
+	}
+}(this, function (CryptoJS) {
+
+	(function () {
+	    // Shortcuts
+	    var C = CryptoJS;
+	    var C_lib = C.lib;
+	    var WordArray = C_lib.WordArray;
+	    var C_enc = C.enc;
+
+	    /**
+	     * Base64url encoding strategy.
+	     */
+	    var Base64url = C_enc.Base64url = {
+	        /**
+	         * Converts a word array to a Base64url string.
+	         *
+	         * @param {WordArray} wordArray The word array.
+	         *
+	         * @param {boolean} urlSafe Whether to use url safe
+	         *
+	         * @return {string} The Base64url string.
+	         *
+	         * @static
+	         *
+	         * @example
+	         *
+	         *     var base64String = CryptoJS.enc.Base64url.stringify(wordArray);
+	         */
+	        stringify: function (wordArray, urlSafe) {
+	            if (urlSafe === undefined) {
+	                urlSafe = true
+	            }
+	            // Shortcuts
+	            var words = wordArray.words;
+	            var sigBytes = wordArray.sigBytes;
+	            var map = urlSafe ? this._safe_map : this._map;
+
+	            // Clamp excess bits
+	            wordArray.clamp();
+
+	            // Convert
+	            var base64Chars = [];
+	            for (var i = 0; i < sigBytes; i += 3) {
+	                var byte1 = (words[i >>> 2]       >>> (24 - (i % 4) * 8))       & 0xff;
+	                var byte2 = (words[(i + 1) >>> 2] >>> (24 - ((i + 1) % 4) * 8)) & 0xff;
+	                var byte3 = (words[(i + 2) >>> 2] >>> (24 - ((i + 2) % 4) * 8)) & 0xff;
+
+	                var triplet = (byte1 << 16) | (byte2 << 8) | byte3;
+
+	                for (var j = 0; (j < 4) && (i + j * 0.75 < sigBytes); j++) {
+	                    base64Chars.push(map.charAt((triplet >>> (6 * (3 - j))) & 0x3f));
+	                }
+	            }
+
+	            // Add padding
+	            var paddingChar = map.charAt(64);
+	            if (paddingChar) {
+	                while (base64Chars.length % 4) {
+	                    base64Chars.push(paddingChar);
+	                }
+	            }
+
+	            return base64Chars.join('');
+	        },
+
+	        /**
+	         * Converts a Base64url string to a word array.
+	         *
+	         * @param {string} base64Str The Base64url string.
+	         *
+	         * @param {boolean} urlSafe Whether to use url safe
+	         *
+	         * @return {WordArray} The word array.
+	         *
+	         * @static
+	         *
+	         * @example
+	         *
+	         *     var wordArray = CryptoJS.enc.Base64url.parse(base64String);
+	         */
+	        parse: function (base64Str, urlSafe) {
+	            if (urlSafe === undefined) {
+	                urlSafe = true
+	            }
+
+	            // Shortcuts
+	            var base64StrLength = base64Str.length;
+	            var map = urlSafe ? this._safe_map : this._map;
+	            var reverseMap = this._reverseMap;
+
+	            if (!reverseMap) {
+	                reverseMap = this._reverseMap = [];
+	                for (var j = 0; j < map.length; j++) {
+	                    reverseMap[map.charCodeAt(j)] = j;
+	                }
+	            }
+
+	            // Ignore padding
+	            var paddingChar = map.charAt(64);
+	            if (paddingChar) {
+	                var paddingIndex = base64Str.indexOf(paddingChar);
+	                if (paddingIndex !== -1) {
+	                    base64StrLength = paddingIndex;
+	                }
+	            }
+
+	            // Convert
+	            return parseLoop(base64Str, base64StrLength, reverseMap);
+
+	        },
+
+	        _map: 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=',
+	        _safe_map: 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_',
+	    };
+
+	    function parseLoop(base64Str, base64StrLength, reverseMap) {
+	        var words = [];
+	        var nBytes = 0;
+	        for (var i = 0; i < base64StrLength; i++) {
+	            if (i % 4) {
+	                var bits1 = reverseMap[base64Str.charCodeAt(i - 1)] << ((i % 4) * 2);
+	                var bits2 = reverseMap[base64Str.charCodeAt(i)] >>> (6 - (i % 4) * 2);
+	                var bitsCombined = bits1 | bits2;
+	                words[nBytes >>> 2] |= bitsCombined << (24 - (nBytes % 4) * 8);
+	                nBytes++;
+	            }
+	        }
+	        return WordArray.create(words, nBytes);
+	    }
+	}());
+
+
+	return CryptoJS.enc.Base64url;
+
+}));