| commit | author | age | ||
| 19351a | 1 | /* |
| B | 2 | * jQuery JSON Plugin |
| 3 | * version: 1.0 (2008-04-17) | |
| 4 | * | |
| 5 | * This document is licensed as free software under the terms of the | |
| 6 | * MIT License: http://www.opensource.org/licenses/mit-license.php | |
| 7 | * | |
| 8 | * Brantley Harris technically wrote this plugin, but it is based somewhat | |
| 9 | * on the JSON.org website's http://www.json.org/json2.js, which proclaims: | |
| 10 | * "NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.", a sentiment that | |
| 11 | * I uphold. I really just cleaned it up. | |
| 12 | * | |
| 13 | * It is also based heavily on MochiKit's serializeJSON, which is | |
| 14 | * copywrited 2005 by Bob Ippolito. | |
| 15 | */ | |
| 16 | ||
| 17 | (function($) { | |
| 18 | function toIntegersAtLease(n) | |
| 19 | // Format integers to have at least two digits. | |
| 20 | { | |
| 21 | return n < 10 ? '0' + n : n; | |
| 22 | } | |
| 23 | ||
| 24 | Date.prototype.toJSON = function(date) | |
| 25 | // Yes, it polutes the Date namespace, but we'll allow it here, as | |
| 26 | // it's damned usefull. | |
| 27 | { | |
| 28 | return this.getUTCFullYear() + '-' + | |
| 29 | toIntegersAtLease(this.getUTCMonth()) + '-' + | |
| 30 | toIntegersAtLease(this.getUTCDate()); | |
| 31 | }; | |
| 32 | ||
| 33 | var escapeable = /["\\\x00-\x1f\x7f-\x9f]/g; | |
| 34 | var meta = { // table of character substitutions | |
| 35 | '\b': '\\b', | |
| 36 | '\t': '\\t', | |
| 37 | '\n': '\\n', | |
| 38 | '\f': '\\f', | |
| 39 | '\r': '\\r', | |
| 40 | '"' : '\\"', | |
| 41 | '\\': '\\\\' | |
| 42 | }; | |
| 43 | ||
| 44 | $.quoteString = function(string) | |
| 45 | // Places quotes around a string, inteligently. | |
| 46 | // If the string contains no control characters, no quote characters, and no | |
| 47 | // backslash characters, then we can safely slap some quotes around it. | |
| 48 | // Otherwise we must also replace the offending characters with safe escape | |
| 49 | // sequences. | |
| 50 | { | |
| 51 | if (escapeable.test(string)) | |
| 52 | { | |
| 53 | return '"' + string.replace(escapeable, function (a) | |
| 54 | { | |
| 55 | var c = meta[a]; | |
| 56 | if (typeof c === 'string') { | |
| 57 | return c; | |
| 58 | } | |
| 59 | c = a.charCodeAt(); | |
| 60 | return '\\u00' + Math.floor(c / 16).toString(16) + (c % 16).toString(16); | |
| 61 | }) + '"'; | |
| 62 | } | |
| 63 | return '"' + string + '"'; | |
| 64 | }; | |
| 65 | ||
| 66 | $.toJSON = function(o) | |
| 67 | { | |
| 68 | var type = typeof(o); | |
| 69 | ||
| 70 | if (type == "undefined") | |
| 71 | return "undefined"; | |
| 72 | else if (type == "number" || type == "boolean") | |
| 73 | return o + ""; | |
| 74 | else if (o === null) | |
| 75 | return "null"; | |
| 76 | ||
| 77 | // Is it a string? | |
| 78 | if (type == "string") | |
| 79 | { | |
| 80 | return $.quoteString(o); | |
| 81 | } | |
| 82 | ||
| 83 | // Does it have a .toJSON function? | |
| 84 | if (type == "object" && typeof o.toJSON == "function") | |
| 85 | return o.toJSON(); | |
| 86 | ||
| 87 | // Is it an array? | |
| 88 | if (type != "function" && typeof(o.length) == "number") | |
| 89 | { | |
| 90 | var ret = []; | |
| 91 | for (var i = 0; i < o.length; i++) { | |
| 92 | ret.push( $.toJSON(o[i]) ); | |
| 93 | } | |
| 94 | return "[" + ret.join(",") + "]"; | |
| 95 | } | |
| 96 | ||
| 97 | // If it's a function, we have to warn somebody! | |
| 98 | if (type == "function") { | |
| 99 | throw new TypeError("Unable to convert object of type 'function' to json."); | |
| 100 | } | |
| 101 | ||
| 102 | // It's probably an object, then. | |
| 103 | var ret = []; | |
| 104 | for (var k in o) { | |
| 105 | var name; | |
| 106 | type = typeof(k); | |
| 107 | ||
| 108 | if (type == "number") | |
| 109 | name = '"' + k + '"'; | |
| 110 | else if (type == "string") | |
| 111 | name = $.quoteString(k); | |
| 112 | else | |
| 113 | continue; //skip non-string or number keys | |
| 114 | ||
| 115 | var val = $.toJSON(o[k]); | |
| 116 | if (typeof(val) != "string") { | |
| 117 | // skip non-serializable values | |
| 118 | continue; | |
| 119 | } | |
| 120 | ||
| 121 | ret.push(name + ":" + val); | |
| 122 | } | |
| 123 | return "{" + ret.join(",") + "}"; | |
| 124 | }; | |
| 125 | ||
| 126 | $.compactJSON = function(o) | |
| 127 | { | |
| 128 | return $.toJSON(o, true); | |
| 129 | }; | |
| 130 | ||
| 131 | $.evalJSON = function(src) | |
| 132 | // Evals JSON that we know to be safe. | |
| 133 | { | |
| 134 | return eval("(" + src + ")"); | |
| 135 | }; | |
| 136 | ||
| 137 | $.secureEvalJSON = function(src) | |
| 138 | // Evals JSON in a way that is *more* secure. | |
| 139 | { | |
| 140 | var filtered = src; | |
| 141 | filtered = filtered.replace(/\\["\\\/bfnrtu]/g, '@'); | |
| 142 | filtered = filtered.replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']'); | |
| 143 | filtered = filtered.replace(/(?:^|:|,)(?:\s*\[)+/g, ''); | |
| 144 | ||
| 145 | if (/^[\],:{}\s]*$/.test(filtered)) | |
| 146 | return eval("(" + src + ")"); | |
| 147 | else | |
| 148 | throw new SyntaxError("Error parsing JSON, source is not valid."); | |
| 149 | }; | |
| 150 | })(jQuery); | |
