root / ui / static / json2.js @ 709a6319
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1 | d2f03cb3 | Mike Muzurakis | /*
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2 | d2f03cb3 | Mike Muzurakis | http://www.JSON.org/json2.js
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3 | d2f03cb3 | Mike Muzurakis | 2011-02-23
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4 | d2f03cb3 | Mike Muzurakis | |
5 | d2f03cb3 | Mike Muzurakis | Public Domain.
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6 | d2f03cb3 | Mike Muzurakis | |
7 | d2f03cb3 | Mike Muzurakis | NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
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8 | d2f03cb3 | Mike Muzurakis | |
9 | d2f03cb3 | Mike Muzurakis | See http://www.JSON.org/js.html
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10 | d2f03cb3 | Mike Muzurakis | |
11 | d2f03cb3 | Mike Muzurakis | |
12 | d2f03cb3 | Mike Muzurakis | This code should be minified before deployment.
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13 | d2f03cb3 | Mike Muzurakis | See http://javascript.crockford.com/jsmin.html
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14 | d2f03cb3 | Mike Muzurakis | |
15 | d2f03cb3 | Mike Muzurakis | USE YOUR OWN COPY. IT IS EXTREMELY UNWISE TO LOAD CODE FROM SERVERS YOU DO
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16 | d2f03cb3 | Mike Muzurakis | NOT CONTROL.
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17 | d2f03cb3 | Mike Muzurakis | |
18 | d2f03cb3 | Mike Muzurakis | |
19 | d2f03cb3 | Mike Muzurakis | This file creates a global JSON object containing two methods: stringify
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20 | d2f03cb3 | Mike Muzurakis | and parse.
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21 | d2f03cb3 | Mike Muzurakis | |
22 | d2f03cb3 | Mike Muzurakis | JSON.stringify(value, replacer, space)
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23 | d2f03cb3 | Mike Muzurakis | value any JavaScript value, usually an object or array.
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24 | d2f03cb3 | Mike Muzurakis | |
25 | d2f03cb3 | Mike Muzurakis | replacer an optional parameter that determines how object
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26 | d2f03cb3 | Mike Muzurakis | values are stringified for objects. It can be a
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27 | d2f03cb3 | Mike Muzurakis | function or an array of strings.
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28 | d2f03cb3 | Mike Muzurakis | |
29 | d2f03cb3 | Mike Muzurakis | space an optional parameter that specifies the indentation
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30 | d2f03cb3 | Mike Muzurakis | of nested structures. If it is omitted, the text will
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31 | d2f03cb3 | Mike Muzurakis | be packed without extra whitespace. If it is a number,
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32 | d2f03cb3 | Mike Muzurakis | it will specify the number of spaces to indent at each
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33 | d2f03cb3 | Mike Muzurakis | level. If it is a string (such as '\t' or ' '),
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34 | d2f03cb3 | Mike Muzurakis | it contains the characters used to indent at each level.
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35 | d2f03cb3 | Mike Muzurakis | |
36 | d2f03cb3 | Mike Muzurakis | This method produces a JSON text from a JavaScript value.
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37 | d2f03cb3 | Mike Muzurakis | |
38 | d2f03cb3 | Mike Muzurakis | When an object value is found, if the object contains a toJSON
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39 | d2f03cb3 | Mike Muzurakis | method, its toJSON method will be called and the result will be
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40 | d2f03cb3 | Mike Muzurakis | stringified. A toJSON method does not serialize: it returns the
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41 | d2f03cb3 | Mike Muzurakis | value represented by the name/value pair that should be serialized,
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42 | d2f03cb3 | Mike Muzurakis | or undefined if nothing should be serialized. The toJSON method
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43 | d2f03cb3 | Mike Muzurakis | will be passed the key associated with the value, and this will be
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44 | d2f03cb3 | Mike Muzurakis | bound to the value
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45 | d2f03cb3 | Mike Muzurakis | |
46 | d2f03cb3 | Mike Muzurakis | For example, this would serialize Dates as ISO strings.
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47 | d2f03cb3 | Mike Muzurakis | |
48 | d2f03cb3 | Mike Muzurakis | Date.prototype.toJSON = function (key) {
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49 | d2f03cb3 | Mike Muzurakis | function f(n) {
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50 | d2f03cb3 | Mike Muzurakis | // Format integers to have at least two digits.
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51 | d2f03cb3 | Mike Muzurakis | return n < 10 ? '0' + n : n;
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52 | d2f03cb3 | Mike Muzurakis | }
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53 | d2f03cb3 | Mike Muzurakis | |
54 | d2f03cb3 | Mike Muzurakis | return this.getUTCFullYear() + '-' +
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55 | d2f03cb3 | Mike Muzurakis | f(this.getUTCMonth() + 1) + '-' +
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56 | d2f03cb3 | Mike Muzurakis | f(this.getUTCDate()) + 'T' +
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57 | d2f03cb3 | Mike Muzurakis | f(this.getUTCHours()) + ':' +
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58 | d2f03cb3 | Mike Muzurakis | f(this.getUTCMinutes()) + ':' +
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59 | d2f03cb3 | Mike Muzurakis | f(this.getUTCSeconds()) + 'Z';
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60 | d2f03cb3 | Mike Muzurakis | };
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61 | d2f03cb3 | Mike Muzurakis | |
62 | d2f03cb3 | Mike Muzurakis | You can provide an optional replacer method. It will be passed the
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63 | d2f03cb3 | Mike Muzurakis | key and value of each member, with this bound to the containing
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64 | d2f03cb3 | Mike Muzurakis | object. The value that is returned from your method will be
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65 | d2f03cb3 | Mike Muzurakis | serialized. If your method returns undefined, then the member will
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66 | d2f03cb3 | Mike Muzurakis | be excluded from the serialization.
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67 | d2f03cb3 | Mike Muzurakis | |
68 | d2f03cb3 | Mike Muzurakis | If the replacer parameter is an array of strings, then it will be
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69 | d2f03cb3 | Mike Muzurakis | used to select the members to be serialized. It filters the results
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70 | d2f03cb3 | Mike Muzurakis | such that only members with keys listed in the replacer array are
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71 | d2f03cb3 | Mike Muzurakis | stringified.
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72 | d2f03cb3 | Mike Muzurakis | |
73 | d2f03cb3 | Mike Muzurakis | Values that do not have JSON representations, such as undefined or
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74 | d2f03cb3 | Mike Muzurakis | functions, will not be serialized. Such values in objects will be
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75 | d2f03cb3 | Mike Muzurakis | dropped; in arrays they will be replaced with null. You can use
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76 | d2f03cb3 | Mike Muzurakis | a replacer function to replace those with JSON values.
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77 | d2f03cb3 | Mike Muzurakis | JSON.stringify(undefined) returns undefined.
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78 | d2f03cb3 | Mike Muzurakis | |
79 | d2f03cb3 | Mike Muzurakis | The optional space parameter produces a stringification of the
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80 | d2f03cb3 | Mike Muzurakis | value that is filled with line breaks and indentation to make it
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81 | d2f03cb3 | Mike Muzurakis | easier to read.
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82 | d2f03cb3 | Mike Muzurakis | |
83 | d2f03cb3 | Mike Muzurakis | If the space parameter is a non-empty string, then that string will
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84 | d2f03cb3 | Mike Muzurakis | be used for indentation. If the space parameter is a number, then
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85 | d2f03cb3 | Mike Muzurakis | the indentation will be that many spaces.
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86 | d2f03cb3 | Mike Muzurakis | |
87 | d2f03cb3 | Mike Muzurakis | Example:
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88 | d2f03cb3 | Mike Muzurakis | |
89 | d2f03cb3 | Mike Muzurakis | text = JSON.stringify(['e', {pluribus: 'unum'}]);
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90 | d2f03cb3 | Mike Muzurakis | // text is '["e",{"pluribus":"unum"}]'
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91 | d2f03cb3 | Mike Muzurakis | |
92 | d2f03cb3 | Mike Muzurakis | |
93 | d2f03cb3 | Mike Muzurakis | text = JSON.stringify(['e', {pluribus: 'unum'}], null, '\t');
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94 | d2f03cb3 | Mike Muzurakis | // text is '[\n\t"e",\n\t{\n\t\t"pluribus": "unum"\n\t}\n]'
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95 | d2f03cb3 | Mike Muzurakis | |
96 | d2f03cb3 | Mike Muzurakis | text = JSON.stringify([new Date()], function (key, value) {
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97 | d2f03cb3 | Mike Muzurakis | return this[key] instanceof Date ?
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98 | d2f03cb3 | Mike Muzurakis | 'Date(' + this[key] + ')' : value;
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99 | d2f03cb3 | Mike Muzurakis | });
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100 | d2f03cb3 | Mike Muzurakis | // text is '["Date(---current time---)"]'
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101 | d2f03cb3 | Mike Muzurakis | |
102 | d2f03cb3 | Mike Muzurakis | |
103 | d2f03cb3 | Mike Muzurakis | JSON.parse(text, reviver)
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104 | d2f03cb3 | Mike Muzurakis | This method parses a JSON text to produce an object or array.
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105 | d2f03cb3 | Mike Muzurakis | It can throw a SyntaxError exception.
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106 | d2f03cb3 | Mike Muzurakis | |
107 | d2f03cb3 | Mike Muzurakis | The optional reviver parameter is a function that can filter and
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108 | d2f03cb3 | Mike Muzurakis | transform the results. It receives each of the keys and values,
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109 | d2f03cb3 | Mike Muzurakis | and its return value is used instead of the original value.
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110 | d2f03cb3 | Mike Muzurakis | If it returns what it received, then the structure is not modified.
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111 | d2f03cb3 | Mike Muzurakis | If it returns undefined then the member is deleted.
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112 | d2f03cb3 | Mike Muzurakis | |
113 | d2f03cb3 | Mike Muzurakis | Example:
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114 | d2f03cb3 | Mike Muzurakis | |
115 | d2f03cb3 | Mike Muzurakis | // Parse the text. Values that look like ISO date strings will
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116 | d2f03cb3 | Mike Muzurakis | // be converted to Date objects.
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117 | d2f03cb3 | Mike Muzurakis | |
118 | d2f03cb3 | Mike Muzurakis | myData = JSON.parse(text, function (key, value) {
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119 | d2f03cb3 | Mike Muzurakis | var a;
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120 | d2f03cb3 | Mike Muzurakis | if (typeof value === 'string') {
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121 | d2f03cb3 | Mike Muzurakis | a =
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122 | d2f03cb3 | Mike Muzurakis | /^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2}(?:\.\d*)?)Z$/.exec(value);
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123 | d2f03cb3 | Mike Muzurakis | if (a) {
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124 | d2f03cb3 | Mike Muzurakis | return new Date(Date.UTC(+a[1], +a[2] - 1, +a[3], +a[4],
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125 | d2f03cb3 | Mike Muzurakis | +a[5], +a[6]));
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126 | d2f03cb3 | Mike Muzurakis | }
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127 | d2f03cb3 | Mike Muzurakis | }
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128 | d2f03cb3 | Mike Muzurakis | return value;
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129 | d2f03cb3 | Mike Muzurakis | });
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130 | d2f03cb3 | Mike Muzurakis | |
131 | d2f03cb3 | Mike Muzurakis | myData = JSON.parse('["Date(09/09/2001)"]', function (key, value) {
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132 | d2f03cb3 | Mike Muzurakis | var d;
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133 | d2f03cb3 | Mike Muzurakis | if (typeof value === 'string' &&
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134 | d2f03cb3 | Mike Muzurakis | value.slice(0, 5) === 'Date(' &&
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135 | d2f03cb3 | Mike Muzurakis | value.slice(-1) === ')') {
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136 | d2f03cb3 | Mike Muzurakis | d = new Date(value.slice(5, -1));
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137 | d2f03cb3 | Mike Muzurakis | if (d) {
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138 | d2f03cb3 | Mike Muzurakis | return d;
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139 | d2f03cb3 | Mike Muzurakis | }
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140 | d2f03cb3 | Mike Muzurakis | }
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141 | d2f03cb3 | Mike Muzurakis | return value;
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142 | d2f03cb3 | Mike Muzurakis | });
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143 | d2f03cb3 | Mike Muzurakis | |
144 | d2f03cb3 | Mike Muzurakis | |
145 | d2f03cb3 | Mike Muzurakis | This is a reference implementation. You are free to copy, modify, or
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146 | d2f03cb3 | Mike Muzurakis | redistribute.
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147 | d2f03cb3 | Mike Muzurakis | */
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148 | d2f03cb3 | Mike Muzurakis | |
149 | d2f03cb3 | Mike Muzurakis | /*jslint evil: true, strict: false, regexp: false */
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150 | d2f03cb3 | Mike Muzurakis | |
151 | d2f03cb3 | Mike Muzurakis | /*members "", "\b", "\t", "\n", "\f", "\r", "\"", JSON, "\\", apply,
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152 | d2f03cb3 | Mike Muzurakis | call, charCodeAt, getUTCDate, getUTCFullYear, getUTCHours,
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153 | d2f03cb3 | Mike Muzurakis | getUTCMinutes, getUTCMonth, getUTCSeconds, hasOwnProperty, join,
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154 | d2f03cb3 | Mike Muzurakis | lastIndex, length, parse, prototype, push, replace, slice, stringify,
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155 | d2f03cb3 | Mike Muzurakis | test, toJSON, toString, valueOf
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156 | d2f03cb3 | Mike Muzurakis | */
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157 | d2f03cb3 | Mike Muzurakis | |
158 | d2f03cb3 | Mike Muzurakis | |
159 | d2f03cb3 | Mike Muzurakis | // Create a JSON object only if one does not already exist. We create the
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160 | d2f03cb3 | Mike Muzurakis | // methods in a closure to avoid creating global variables.
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161 | d2f03cb3 | Mike Muzurakis | |
162 | d2f03cb3 | Mike Muzurakis | var JSON;
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163 | d2f03cb3 | Mike Muzurakis | if (!JSON) {
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164 | d2f03cb3 | Mike Muzurakis | JSON = {}; |
165 | d2f03cb3 | Mike Muzurakis | } |
166 | d2f03cb3 | Mike Muzurakis | |
167 | d2f03cb3 | Mike Muzurakis | (function () {
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168 | d2f03cb3 | Mike Muzurakis | "use strict";
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169 | d2f03cb3 | Mike Muzurakis | |
170 | d2f03cb3 | Mike Muzurakis | function f(n) { |
171 | d2f03cb3 | Mike Muzurakis | // Format integers to have at least two digits.
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172 | d2f03cb3 | Mike Muzurakis | return n < 10 ? '0' + n : n; |
173 | d2f03cb3 | Mike Muzurakis | } |
174 | d2f03cb3 | Mike Muzurakis | |
175 | d2f03cb3 | Mike Muzurakis | if (typeof Date.prototype.toJSON !== 'function') { |
176 | d2f03cb3 | Mike Muzurakis | |
177 | d2f03cb3 | Mike Muzurakis | Date.prototype.toJSON = function (key) { |
178 | d2f03cb3 | Mike Muzurakis | |
179 | d2f03cb3 | Mike Muzurakis | return isFinite(this.valueOf()) ? |
180 | d2f03cb3 | Mike Muzurakis | this.getUTCFullYear() + '-' + |
181 | d2f03cb3 | Mike Muzurakis | f(this.getUTCMonth() + 1) + '-' + |
182 | d2f03cb3 | Mike Muzurakis | f(this.getUTCDate()) + 'T' + |
183 | d2f03cb3 | Mike Muzurakis | f(this.getUTCHours()) + ':' + |
184 | d2f03cb3 | Mike Muzurakis | f(this.getUTCMinutes()) + ':' + |
185 | d2f03cb3 | Mike Muzurakis | f(this.getUTCSeconds()) + 'Z' : null; |
186 | d2f03cb3 | Mike Muzurakis | }; |
187 | d2f03cb3 | Mike Muzurakis | |
188 | d2f03cb3 | Mike Muzurakis | String.prototype.toJSON = |
189 | d2f03cb3 | Mike Muzurakis | Number.prototype.toJSON = |
190 | d2f03cb3 | Mike Muzurakis | Boolean.prototype.toJSON = function (key) { |
191 | d2f03cb3 | Mike Muzurakis | return this.valueOf(); |
192 | d2f03cb3 | Mike Muzurakis | }; |
193 | d2f03cb3 | Mike Muzurakis | } |
194 | d2f03cb3 | Mike Muzurakis | |
195 | d2f03cb3 | Mike Muzurakis | var cx = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g, |
196 | d2f03cb3 | Mike Muzurakis | escapable = /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
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197 | d2f03cb3 | Mike Muzurakis | gap, |
198 | d2f03cb3 | Mike Muzurakis | indent, |
199 | d2f03cb3 | Mike Muzurakis | meta = { // table of character substitutions
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200 | d2f03cb3 | Mike Muzurakis | '\b': '\\b', |
201 | d2f03cb3 | Mike Muzurakis | '\t': '\\t', |
202 | d2f03cb3 | Mike Muzurakis | '\n': '\\n', |
203 | d2f03cb3 | Mike Muzurakis | '\f': '\\f', |
204 | d2f03cb3 | Mike Muzurakis | '\r': '\\r', |
205 | d2f03cb3 | Mike Muzurakis | '"' : '\\"', |
206 | d2f03cb3 | Mike Muzurakis | '\\': '\\\\' |
207 | d2f03cb3 | Mike Muzurakis | }, |
208 | d2f03cb3 | Mike Muzurakis | rep; |
209 | d2f03cb3 | Mike Muzurakis | |
210 | d2f03cb3 | Mike Muzurakis | |
211 | d2f03cb3 | Mike Muzurakis | function quote(string) { |
212 | d2f03cb3 | Mike Muzurakis | |
213 | d2f03cb3 | Mike Muzurakis | // If the string contains no control characters, no quote characters, and no
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214 | d2f03cb3 | Mike Muzurakis | // backslash characters, then we can safely slap some quotes around it.
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215 | d2f03cb3 | Mike Muzurakis | // Otherwise we must also replace the offending characters with safe escape
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216 | d2f03cb3 | Mike Muzurakis | // sequences.
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217 | d2f03cb3 | Mike Muzurakis | |
218 | d2f03cb3 | Mike Muzurakis | escapable.lastIndex = 0;
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219 | d2f03cb3 | Mike Muzurakis | return escapable.test(string) ? '"' + string.replace(escapable, function (a) { |
220 | d2f03cb3 | Mike Muzurakis | var c = meta[a];
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221 | d2f03cb3 | Mike Muzurakis | return typeof c === 'string' ? c : |
222 | d2f03cb3 | Mike Muzurakis | '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4); |
223 | d2f03cb3 | Mike Muzurakis | }) + '"' : '"' + string + '"'; |
224 | d2f03cb3 | Mike Muzurakis | } |
225 | d2f03cb3 | Mike Muzurakis | |
226 | d2f03cb3 | Mike Muzurakis | |
227 | d2f03cb3 | Mike Muzurakis | function str(key, holder) { |
228 | d2f03cb3 | Mike Muzurakis | |
229 | d2f03cb3 | Mike Muzurakis | // Produce a string from holder[key].
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230 | d2f03cb3 | Mike Muzurakis | |
231 | d2f03cb3 | Mike Muzurakis | var i, // The loop counter. |
232 | d2f03cb3 | Mike Muzurakis | k, // The member key.
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233 | d2f03cb3 | Mike Muzurakis | v, // The member value.
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234 | d2f03cb3 | Mike Muzurakis | length, |
235 | d2f03cb3 | Mike Muzurakis | mind = gap, |
236 | d2f03cb3 | Mike Muzurakis | partial, |
237 | d2f03cb3 | Mike Muzurakis | value = holder[key]; |
238 | d2f03cb3 | Mike Muzurakis | |
239 | d2f03cb3 | Mike Muzurakis | // If the value has a toJSON method, call it to obtain a replacement value.
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240 | d2f03cb3 | Mike Muzurakis | |
241 | d2f03cb3 | Mike Muzurakis | if (value && typeof value === 'object' && |
242 | d2f03cb3 | Mike Muzurakis | typeof value.toJSON === 'function') { |
243 | d2f03cb3 | Mike Muzurakis | value = value.toJSON(key); |
244 | d2f03cb3 | Mike Muzurakis | } |
245 | d2f03cb3 | Mike Muzurakis | |
246 | d2f03cb3 | Mike Muzurakis | // If we were called with a replacer function, then call the replacer to
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247 | d2f03cb3 | Mike Muzurakis | // obtain a replacement value.
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248 | d2f03cb3 | Mike Muzurakis | |
249 | d2f03cb3 | Mike Muzurakis | if (typeof rep === 'function') { |
250 | d2f03cb3 | Mike Muzurakis | value = rep.call(holder, key, value); |
251 | d2f03cb3 | Mike Muzurakis | } |
252 | d2f03cb3 | Mike Muzurakis | |
253 | d2f03cb3 | Mike Muzurakis | // What happens next depends on the value's type.
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254 | d2f03cb3 | Mike Muzurakis | |
255 | d2f03cb3 | Mike Muzurakis | switch (typeof value) { |
256 | d2f03cb3 | Mike Muzurakis | case 'string': |
257 | d2f03cb3 | Mike Muzurakis | return quote(value);
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258 | d2f03cb3 | Mike Muzurakis | |
259 | d2f03cb3 | Mike Muzurakis | case 'number': |
260 | d2f03cb3 | Mike Muzurakis | |
261 | d2f03cb3 | Mike Muzurakis | // JSON numbers must be finite. Encode non-finite numbers as null.
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262 | d2f03cb3 | Mike Muzurakis | |
263 | d2f03cb3 | Mike Muzurakis | return isFinite(value) ? String(value) : 'null'; |
264 | d2f03cb3 | Mike Muzurakis | |
265 | d2f03cb3 | Mike Muzurakis | case 'boolean': |
266 | d2f03cb3 | Mike Muzurakis | case 'null': |
267 | d2f03cb3 | Mike Muzurakis | |
268 | d2f03cb3 | Mike Muzurakis | // If the value is a boolean or null, convert it to a string. Note:
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269 | d2f03cb3 | Mike Muzurakis | // typeof null does not produce 'null'. The case is included here in
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270 | d2f03cb3 | Mike Muzurakis | // the remote chance that this gets fixed someday.
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271 | d2f03cb3 | Mike Muzurakis | |
272 | d2f03cb3 | Mike Muzurakis | return String(value);
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273 | d2f03cb3 | Mike Muzurakis | |
274 | d2f03cb3 | Mike Muzurakis | // If the type is 'object', we might be dealing with an object or an array or
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275 | d2f03cb3 | Mike Muzurakis | // null.
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276 | d2f03cb3 | Mike Muzurakis | |
277 | d2f03cb3 | Mike Muzurakis | case 'object': |
278 | d2f03cb3 | Mike Muzurakis | |
279 | d2f03cb3 | Mike Muzurakis | // Due to a specification blunder in ECMAScript, typeof null is 'object',
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280 | d2f03cb3 | Mike Muzurakis | // so watch out for that case.
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281 | d2f03cb3 | Mike Muzurakis | |
282 | d2f03cb3 | Mike Muzurakis | if (!value) {
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283 | d2f03cb3 | Mike Muzurakis | return 'null'; |
284 | d2f03cb3 | Mike Muzurakis | } |
285 | d2f03cb3 | Mike Muzurakis | |
286 | d2f03cb3 | Mike Muzurakis | // Make an array to hold the partial results of stringifying this object value.
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287 | d2f03cb3 | Mike Muzurakis | |
288 | d2f03cb3 | Mike Muzurakis | gap += indent; |
289 | d2f03cb3 | Mike Muzurakis | partial = []; |
290 | d2f03cb3 | Mike Muzurakis | |
291 | d2f03cb3 | Mike Muzurakis | // Is the value an array?
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292 | d2f03cb3 | Mike Muzurakis | |
293 | d2f03cb3 | Mike Muzurakis | if (Object.prototype.toString.apply(value) === '[object Array]') { |
294 | d2f03cb3 | Mike Muzurakis | |
295 | d2f03cb3 | Mike Muzurakis | // The value is an array. Stringify every element. Use null as a placeholder
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296 | d2f03cb3 | Mike Muzurakis | // for non-JSON values.
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297 | d2f03cb3 | Mike Muzurakis | |
298 | d2f03cb3 | Mike Muzurakis | length = value.length; |
299 | d2f03cb3 | Mike Muzurakis | for (i = 0; i < length; i += 1) { |
300 | d2f03cb3 | Mike Muzurakis | partial[i] = str(i, value) || 'null';
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301 | d2f03cb3 | Mike Muzurakis | } |
302 | d2f03cb3 | Mike Muzurakis | |
303 | d2f03cb3 | Mike Muzurakis | // Join all of the elements together, separated with commas, and wrap them in
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304 | d2f03cb3 | Mike Muzurakis | // brackets.
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305 | d2f03cb3 | Mike Muzurakis | |
306 | d2f03cb3 | Mike Muzurakis | v = partial.length === 0 ? '[]' : gap ? |
307 | d2f03cb3 | Mike Muzurakis | '[\n' + gap + partial.join(',\n' + gap) + '\n' + mind + ']' : |
308 | d2f03cb3 | Mike Muzurakis | '[' + partial.join(',') + ']'; |
309 | d2f03cb3 | Mike Muzurakis | gap = mind; |
310 | d2f03cb3 | Mike Muzurakis | return v;
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311 | d2f03cb3 | Mike Muzurakis | } |
312 | d2f03cb3 | Mike Muzurakis | |
313 | d2f03cb3 | Mike Muzurakis | // If the replacer is an array, use it to select the members to be stringified.
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314 | d2f03cb3 | Mike Muzurakis | |
315 | d2f03cb3 | Mike Muzurakis | if (rep && typeof rep === 'object') { |
316 | d2f03cb3 | Mike Muzurakis | length = rep.length; |
317 | d2f03cb3 | Mike Muzurakis | for (i = 0; i < length; i += 1) { |
318 | d2f03cb3 | Mike Muzurakis | if (typeof rep[i] === 'string') { |
319 | d2f03cb3 | Mike Muzurakis | k = rep[i]; |
320 | d2f03cb3 | Mike Muzurakis | v = str(k, value); |
321 | d2f03cb3 | Mike Muzurakis | if (v) {
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322 | d2f03cb3 | Mike Muzurakis | partial.push(quote(k) + (gap ? ': ' : ':') + v); |
323 | d2f03cb3 | Mike Muzurakis | } |
324 | d2f03cb3 | Mike Muzurakis | } |
325 | d2f03cb3 | Mike Muzurakis | } |
326 | d2f03cb3 | Mike Muzurakis | } else {
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327 | d2f03cb3 | Mike Muzurakis | |
328 | d2f03cb3 | Mike Muzurakis | // Otherwise, iterate through all of the keys in the object.
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329 | d2f03cb3 | Mike Muzurakis | |
330 | d2f03cb3 | Mike Muzurakis | for (k in value) { |
331 | d2f03cb3 | Mike Muzurakis | if (Object.prototype.hasOwnProperty.call(value, k)) {
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332 | d2f03cb3 | Mike Muzurakis | v = str(k, value); |
333 | d2f03cb3 | Mike Muzurakis | if (v) {
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334 | d2f03cb3 | Mike Muzurakis | partial.push(quote(k) + (gap ? ': ' : ':') + v); |
335 | d2f03cb3 | Mike Muzurakis | } |
336 | d2f03cb3 | Mike Muzurakis | } |
337 | d2f03cb3 | Mike Muzurakis | } |
338 | d2f03cb3 | Mike Muzurakis | } |
339 | d2f03cb3 | Mike Muzurakis | |
340 | d2f03cb3 | Mike Muzurakis | // Join all of the member texts together, separated with commas,
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341 | d2f03cb3 | Mike Muzurakis | // and wrap them in braces.
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342 | d2f03cb3 | Mike Muzurakis | |
343 | d2f03cb3 | Mike Muzurakis | v = partial.length === 0 ? '{}' : gap ? |
344 | d2f03cb3 | Mike Muzurakis | '{\n' + gap + partial.join(',\n' + gap) + '\n' + mind + '}' : |
345 | d2f03cb3 | Mike Muzurakis | '{' + partial.join(',') + '}'; |
346 | d2f03cb3 | Mike Muzurakis | gap = mind; |
347 | d2f03cb3 | Mike Muzurakis | return v;
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348 | d2f03cb3 | Mike Muzurakis | } |
349 | d2f03cb3 | Mike Muzurakis | } |
350 | d2f03cb3 | Mike Muzurakis | |
351 | d2f03cb3 | Mike Muzurakis | // If the JSON object does not yet have a stringify method, give it one.
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352 | d2f03cb3 | Mike Muzurakis | |
353 | d2f03cb3 | Mike Muzurakis | if (typeof JSON.stringify !== 'function') { |
354 | d2f03cb3 | Mike Muzurakis | JSON.stringify = function (value, replacer, space) { |
355 | d2f03cb3 | Mike Muzurakis | |
356 | d2f03cb3 | Mike Muzurakis | // The stringify method takes a value and an optional replacer, and an optional
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357 | d2f03cb3 | Mike Muzurakis | // space parameter, and returns a JSON text. The replacer can be a function
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358 | d2f03cb3 | Mike Muzurakis | // that can replace values, or an array of strings that will select the keys.
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359 | d2f03cb3 | Mike Muzurakis | // A default replacer method can be provided. Use of the space parameter can
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360 | d2f03cb3 | Mike Muzurakis | // produce text that is more easily readable.
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361 | d2f03cb3 | Mike Muzurakis | |
362 | d2f03cb3 | Mike Muzurakis | var i;
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363 | d2f03cb3 | Mike Muzurakis | gap = '';
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364 | d2f03cb3 | Mike Muzurakis | indent = '';
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365 | d2f03cb3 | Mike Muzurakis | |
366 | d2f03cb3 | Mike Muzurakis | // If the space parameter is a number, make an indent string containing that
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367 | d2f03cb3 | Mike Muzurakis | // many spaces.
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368 | d2f03cb3 | Mike Muzurakis | |
369 | d2f03cb3 | Mike Muzurakis | if (typeof space === 'number') { |
370 | d2f03cb3 | Mike Muzurakis | for (i = 0; i < space; i += 1) { |
371 | d2f03cb3 | Mike Muzurakis | indent += ' ';
|
372 | d2f03cb3 | Mike Muzurakis | } |
373 | d2f03cb3 | Mike Muzurakis | |
374 | d2f03cb3 | Mike Muzurakis | // If the space parameter is a string, it will be used as the indent string.
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375 | d2f03cb3 | Mike Muzurakis | |
376 | d2f03cb3 | Mike Muzurakis | } else if (typeof space === 'string') { |
377 | d2f03cb3 | Mike Muzurakis | indent = space; |
378 | d2f03cb3 | Mike Muzurakis | } |
379 | d2f03cb3 | Mike Muzurakis | |
380 | d2f03cb3 | Mike Muzurakis | // If there is a replacer, it must be a function or an array.
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381 | d2f03cb3 | Mike Muzurakis | // Otherwise, throw an error.
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382 | d2f03cb3 | Mike Muzurakis | |
383 | d2f03cb3 | Mike Muzurakis | rep = replacer; |
384 | d2f03cb3 | Mike Muzurakis | if (replacer && typeof replacer !== 'function' && |
385 | d2f03cb3 | Mike Muzurakis | (typeof replacer !== 'object' || |
386 | d2f03cb3 | Mike Muzurakis | typeof replacer.length !== 'number')) { |
387 | d2f03cb3 | Mike Muzurakis | throw new Error('JSON.stringify'); |
388 | d2f03cb3 | Mike Muzurakis | } |
389 | d2f03cb3 | Mike Muzurakis | |
390 | d2f03cb3 | Mike Muzurakis | // Make a fake root object containing our value under the key of ''.
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391 | d2f03cb3 | Mike Muzurakis | // Return the result of stringifying the value.
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392 | d2f03cb3 | Mike Muzurakis | |
393 | d2f03cb3 | Mike Muzurakis | return str('', {'': value}); |
394 | d2f03cb3 | Mike Muzurakis | }; |
395 | d2f03cb3 | Mike Muzurakis | } |
396 | d2f03cb3 | Mike Muzurakis | |
397 | d2f03cb3 | Mike Muzurakis | |
398 | d2f03cb3 | Mike Muzurakis | // If the JSON object does not yet have a parse method, give it one.
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399 | d2f03cb3 | Mike Muzurakis | |
400 | d2f03cb3 | Mike Muzurakis | if (typeof JSON.parse !== 'function') { |
401 | d2f03cb3 | Mike Muzurakis | JSON.parse = function (text, reviver) { |
402 | d2f03cb3 | Mike Muzurakis | |
403 | d2f03cb3 | Mike Muzurakis | // The parse method takes a text and an optional reviver function, and returns
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404 | d2f03cb3 | Mike Muzurakis | // a JavaScript value if the text is a valid JSON text.
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405 | d2f03cb3 | Mike Muzurakis | |
406 | d2f03cb3 | Mike Muzurakis | var j;
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407 | d2f03cb3 | Mike Muzurakis | |
408 | d2f03cb3 | Mike Muzurakis | function walk(holder, key) { |
409 | d2f03cb3 | Mike Muzurakis | |
410 | d2f03cb3 | Mike Muzurakis | // The walk method is used to recursively walk the resulting structure so
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411 | d2f03cb3 | Mike Muzurakis | // that modifications can be made.
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412 | d2f03cb3 | Mike Muzurakis | |
413 | d2f03cb3 | Mike Muzurakis | var k, v, value = holder[key];
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414 | d2f03cb3 | Mike Muzurakis | if (value && typeof value === 'object') { |
415 | d2f03cb3 | Mike Muzurakis | for (k in value) { |
416 | d2f03cb3 | Mike Muzurakis | if (Object.prototype.hasOwnProperty.call(value, k)) {
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417 | d2f03cb3 | Mike Muzurakis | v = walk(value, k); |
418 | d2f03cb3 | Mike Muzurakis | if (v !== undefined) { |
419 | d2f03cb3 | Mike Muzurakis | value[k] = v; |
420 | d2f03cb3 | Mike Muzurakis | } else {
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421 | d2f03cb3 | Mike Muzurakis | delete value[k];
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422 | d2f03cb3 | Mike Muzurakis | } |
423 | d2f03cb3 | Mike Muzurakis | } |
424 | d2f03cb3 | Mike Muzurakis | } |
425 | d2f03cb3 | Mike Muzurakis | } |
426 | d2f03cb3 | Mike Muzurakis | return reviver.call(holder, key, value);
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427 | d2f03cb3 | Mike Muzurakis | } |
428 | d2f03cb3 | Mike Muzurakis | |
429 | d2f03cb3 | Mike Muzurakis | |
430 | d2f03cb3 | Mike Muzurakis | // Parsing happens in four stages. In the first stage, we replace certain
|
431 | d2f03cb3 | Mike Muzurakis | // Unicode characters with escape sequences. JavaScript handles many characters
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432 | d2f03cb3 | Mike Muzurakis | // incorrectly, either silently deleting them, or treating them as line endings.
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433 | d2f03cb3 | Mike Muzurakis | |
434 | d2f03cb3 | Mike Muzurakis | text = String(text); |
435 | d2f03cb3 | Mike Muzurakis | cx.lastIndex = 0;
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436 | d2f03cb3 | Mike Muzurakis | if (cx.test(text)) {
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437 | d2f03cb3 | Mike Muzurakis | text = text.replace(cx, function (a) {
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438 | d2f03cb3 | Mike Muzurakis | return '\\u' + |
439 | d2f03cb3 | Mike Muzurakis | ('0000' + a.charCodeAt(0).toString(16)).slice(-4); |
440 | d2f03cb3 | Mike Muzurakis | }); |
441 | d2f03cb3 | Mike Muzurakis | } |
442 | d2f03cb3 | Mike Muzurakis | |
443 | d2f03cb3 | Mike Muzurakis | // In the second stage, we run the text against regular expressions that look
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444 | d2f03cb3 | Mike Muzurakis | // for non-JSON patterns. We are especially concerned with '()' and 'new'
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445 | d2f03cb3 | Mike Muzurakis | // because they can cause invocation, and '=' because it can cause mutation.
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446 | d2f03cb3 | Mike Muzurakis | // But just to be safe, we want to reject all unexpected forms.
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447 | d2f03cb3 | Mike Muzurakis | |
448 | d2f03cb3 | Mike Muzurakis | // We split the second stage into 4 regexp operations in order to work around
|
449 | d2f03cb3 | Mike Muzurakis | // crippling inefficiencies in IE's and Safari's regexp engines. First we
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450 | d2f03cb3 | Mike Muzurakis | // replace the JSON backslash pairs with '@' (a non-JSON character). Second, we
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451 | d2f03cb3 | Mike Muzurakis | // replace all simple value tokens with ']' characters. Third, we delete all
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452 | d2f03cb3 | Mike Muzurakis | // open brackets that follow a colon or comma or that begin the text. Finally,
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453 | d2f03cb3 | Mike Muzurakis | // we look to see that the remaining characters are only whitespace or ']' or
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454 | d2f03cb3 | Mike Muzurakis | // ',' or ':' or '{' or '}'. If that is so, then the text is safe for eval.
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455 | d2f03cb3 | Mike Muzurakis | |
456 | d2f03cb3 | Mike Muzurakis | if (/^[\],:{}\s]*$/ |
457 | d2f03cb3 | Mike Muzurakis | .test(text.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, '@') |
458 | d2f03cb3 | Mike Muzurakis | .replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']') |
459 | d2f03cb3 | Mike Muzurakis | .replace(/(?:^|:|,)(?:\s*\[)+/g, ''))) { |
460 | d2f03cb3 | Mike Muzurakis | |
461 | d2f03cb3 | Mike Muzurakis | // In the third stage we use the eval function to compile the text into a
|
462 | d2f03cb3 | Mike Muzurakis | // JavaScript structure. The '{' operator is subject to a syntactic ambiguity
|
463 | d2f03cb3 | Mike Muzurakis | // in JavaScript: it can begin a block or an object literal. We wrap the text
|
464 | d2f03cb3 | Mike Muzurakis | // in parens to eliminate the ambiguity.
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465 | d2f03cb3 | Mike Muzurakis | |
466 | d2f03cb3 | Mike Muzurakis | j = eval('(' + text + ')'); |
467 | d2f03cb3 | Mike Muzurakis | |
468 | d2f03cb3 | Mike Muzurakis | // In the optional fourth stage, we recursively walk the new structure, passing
|
469 | d2f03cb3 | Mike Muzurakis | // each name/value pair to a reviver function for possible transformation.
|
470 | d2f03cb3 | Mike Muzurakis | |
471 | d2f03cb3 | Mike Muzurakis | return typeof reviver === 'function' ? |
472 | d2f03cb3 | Mike Muzurakis | walk({'': j}, '') : j; |
473 | d2f03cb3 | Mike Muzurakis | } |
474 | d2f03cb3 | Mike Muzurakis | |
475 | d2f03cb3 | Mike Muzurakis | // If the text is not JSON parseable, then a SyntaxError is thrown.
|
476 | d2f03cb3 | Mike Muzurakis | |
477 | d2f03cb3 | Mike Muzurakis | throw new SyntaxError('JSON.parse'); |
478 | d2f03cb3 | Mike Muzurakis | }; |
479 | d2f03cb3 | Mike Muzurakis | } |
480 | d2f03cb3 | Mike Muzurakis | }()); |
481 | d2f03cb3 | Mike Muzurakis |