diff --git a/web/json2.js b/web/json2.js index 7044c6d..5838457 100644 --- a/web/json2.js +++ b/web/json2.js @@ -1,8 +1,162 @@ +/* + json2.js + 2015-05-03 -/*jslint evil: true, strict: false */ + Public Domain. -/*members "", "\b", "\t", "\n", "\f", "\r", "\"", JSON, "\\", apply, - call, charCodeAt, getUTCDate, getUTCFullYear, getUTCHours, + NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK. + + See http://www.JSON.org/js.html + + + This code should be minified before deployment. + See http://javascript.crockford.com/jsmin.html + + USE YOUR OWN COPY. IT IS EXTREMELY UNWISE TO LOAD CODE FROM SERVERS YOU DO + NOT CONTROL. + + + This file creates a global JSON object containing two methods: stringify + and parse. This file is provides the ES5 JSON capability to ES3 systems. + If a project might run on IE8 or earlier, then this file should be included. + This file does nothing on ES5 systems. + + JSON.stringify(value, replacer, space) + value any JavaScript value, usually an object or array. + + replacer an optional parameter that determines how object + values are stringified for objects. It can be a + function or an array of strings. + + space an optional parameter that specifies the indentation + of nested structures. If it is omitted, the text will + be packed without extra whitespace. If it is a number, + it will specify the number of spaces to indent at each + level. If it is a string (such as '\t' or ' '), + it contains the characters used to indent at each level. + + This method produces a JSON text from a JavaScript value. + + When an object value is found, if the object contains a toJSON + method, its toJSON method will be called and the result will be + stringified. A toJSON method does not serialize: it returns the + value represented by the name/value pair that should be serialized, + or undefined if nothing should be serialized. The toJSON method + will be passed the key associated with the value, and this will be + bound to the value + + For example, this would serialize Dates as ISO strings. + + Date.prototype.toJSON = function (key) { + function f(n) { + // Format integers to have at least two digits. + return n < 10 + ? '0' + n + : n; + } + + return this.getUTCFullYear() + '-' + + f(this.getUTCMonth() + 1) + '-' + + f(this.getUTCDate()) + 'T' + + f(this.getUTCHours()) + ':' + + f(this.getUTCMinutes()) + ':' + + f(this.getUTCSeconds()) + 'Z'; + }; + + You can provide an optional replacer method. It will be passed the + key and value of each member, with this bound to the containing + object. The value that is returned from your method will be + serialized. If your method returns undefined, then the member will + be excluded from the serialization. + + If the replacer parameter is an array of strings, then it will be + used to select the members to be serialized. It filters the results + such that only members with keys listed in the replacer array are + stringified. + + Values that do not have JSON representations, such as undefined or + functions, will not be serialized. Such values in objects will be + dropped; in arrays they will be replaced with null. You can use + a replacer function to replace those with JSON values. + JSON.stringify(undefined) returns undefined. + + The optional space parameter produces a stringification of the + value that is filled with line breaks and indentation to make it + easier to read. + + If the space parameter is a non-empty string, then that string will + be used for indentation. If the space parameter is a number, then + the indentation will be that many spaces. + + Example: + + text = JSON.stringify(['e', {pluribus: 'unum'}]); + // text is '["e",{"pluribus":"unum"}]' + + + text = JSON.stringify(['e', {pluribus: 'unum'}], null, '\t'); + // text is '[\n\t"e",\n\t{\n\t\t"pluribus": "unum"\n\t}\n]' + + text = JSON.stringify([new Date()], function (key, value) { + return this[key] instanceof Date + ? 'Date(' + this[key] + ')' + : value; + }); + // text is '["Date(---current time---)"]' + + + JSON.parse(text, reviver) + This method parses a JSON text to produce an object or array. + It can throw a SyntaxError exception. + + The optional reviver parameter is a function that can filter and + transform the results. It receives each of the keys and values, + and its return value is used instead of the original value. + If it returns what it received, then the structure is not modified. + If it returns undefined then the member is deleted. + + Example: + + // Parse the text. Values that look like ISO date strings will + // be converted to Date objects. + + myData = JSON.parse(text, function (key, value) { + var a; + if (typeof value === 'string') { + a = +/^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2}(?:\.\d*)?)Z$/.exec(value); + if (a) { + return new Date(Date.UTC(+a[1], +a[2] - 1, +a[3], +a[4], + +a[5], +a[6])); + } + } + return value; + }); + + myData = JSON.parse('["Date(09/09/2001)"]', function (key, value) { + var d; + if (typeof value === 'string' && + value.slice(0, 5) === 'Date(' && + value.slice(-1) === ')') { + d = new Date(value.slice(5, -1)); + if (d) { + return d; + } + } + return value; + }); + + + This is a reference implementation. You are free to copy, modify, or + redistribute. +*/ + +/*jslint + eval, for, this +*/ + +/*property + JSON, apply, call, charCodeAt, getUTCDate, getUTCFullYear, getUTCHours, getUTCMinutes, getUTCMonth, getUTCSeconds, hasOwnProperty, join, lastIndex, length, parse, prototype, push, replace, slice, stringify, test, toJSON, toString, valueOf @@ -12,50 +166,53 @@ // Create a JSON object only if one does not already exist. We create the // methods in a closure to avoid creating global variables. -if (!this.JSON) { - this.JSON = {}; +if (typeof JSON !== 'object') { + JSON = {}; } (function () { + 'use strict'; + + var rx_one = /^[\],:{}\s]*$/, + rx_two = /\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, + rx_three = /"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, + rx_four = /(?:^|:|,)(?:\s*\[)+/g, + rx_escapable = /[\\\"\u0000-\u001f\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g, + rx_dangerous = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g; function f(n) { // Format integers to have at least two digits. - return n < 10 ? '0' + n : n; + return n < 10 + ? '0' + n + : n; + } + + function this_value() { + return this.valueOf(); } if (typeof Date.prototype.toJSON !== 'function') { - Date.prototype.toJSON = function (key) { + Date.prototype.toJSON = function () { - return isFinite(this.valueOf()) ? - this.getUTCFullYear() + '-' + - f(this.getUTCMonth() + 1) + '-' + - f(this.getUTCDate()) + 'T' + - f(this.getUTCHours()) + ':' + - f(this.getUTCMinutes()) + ':' + - f(this.getUTCSeconds()) + 'Z' : null; + return isFinite(this.valueOf()) + ? this.getUTCFullYear() + '-' + + f(this.getUTCMonth() + 1) + '-' + + f(this.getUTCDate()) + 'T' + + f(this.getUTCHours()) + ':' + + f(this.getUTCMinutes()) + ':' + + f(this.getUTCSeconds()) + 'Z' + : null; }; - String.prototype.toJSON = - Number.prototype.toJSON = - Boolean.prototype.toJSON = function (key) { - return this.valueOf(); - }; + Boolean.prototype.toJSON = this_value; + Number.prototype.toJSON = this_value; + String.prototype.toJSON = this_value; } - var cx = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g, - escapable = /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g, - gap, + var gap, indent, - meta = { // table of character substitutions - '\b': '\\b', - '\t': '\\t', - '\n': '\\n', - '\f': '\\f', - '\r': '\\r', - '"' : '\\"', - '\\': '\\\\' - }, + meta, rep; @@ -66,14 +223,15 @@ if (!this.JSON) { // Otherwise we must also replace the offending characters with safe escape // sequences. - escapable.lastIndex = 0; - return escapable.test(string) ? - '"' + string.replace(escapable, function (a) { + rx_escapable.lastIndex = 0; + return rx_escapable.test(string) + ? '"' + string.replace(rx_escapable, function (a) { var c = meta[a]; - return typeof c === 'string' ? c : - '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4); - }) + '"' : - '"' + string + '"'; + return typeof c === 'string' + ? c + : '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4); + }) + '"' + : '"' + string + '"'; } @@ -113,7 +271,9 @@ if (!this.JSON) { // JSON numbers must be finite. Encode non-finite numbers as null. - return isFinite(value) ? String(value) : 'null'; + return isFinite(value) + ? String(value) + : 'null'; case 'boolean': case 'null': @@ -156,11 +316,11 @@ if (!this.JSON) { // Join all of the elements together, separated with commas, and wrap them in // brackets. - v = partial.length === 0 ? '[]' : - gap ? '[\n' + gap + - partial.join(',\n' + gap) + '\n' + - mind + ']' : - '[' + partial.join(',') + ']'; + v = partial.length === 0 + ? '[]' + : gap + ? '[\n' + gap + partial.join(',\n' + gap) + '\n' + mind + ']' + : '[' + partial.join(',') + ']'; gap = mind; return v; } @@ -170,11 +330,15 @@ if (!this.JSON) { if (rep && typeof rep === 'object') { length = rep.length; for (i = 0; i < length; i += 1) { - k = rep[i]; - if (typeof k === 'string') { + if (typeof rep[i] === 'string') { + k = rep[i]; v = str(k, value); if (v) { - partial.push(quote(k) + (gap ? ': ' : ':') + v); + partial.push(quote(k) + ( + gap + ? ': ' + : ':' + ) + v); } } } @@ -183,10 +347,14 @@ if (!this.JSON) { // Otherwise, iterate through all of the keys in the object. for (k in value) { - if (Object.hasOwnProperty.call(value, k)) { + if (Object.prototype.hasOwnProperty.call(value, k)) { v = str(k, value); if (v) { - partial.push(quote(k) + (gap ? ': ' : ':') + v); + partial.push(quote(k) + ( + gap + ? ': ' + : ':' + ) + v); } } } @@ -195,9 +363,11 @@ if (!this.JSON) { // Join all of the member texts together, separated with commas, // and wrap them in braces. - v = partial.length === 0 ? '{}' : - gap ? '{\n' + gap + partial.join(',\n' + gap) + '\n' + - mind + '}' : '{' + partial.join(',') + '}'; + v = partial.length === 0 + ? '{}' + : gap + ? '{\n' + gap + partial.join(',\n' + gap) + '\n' + mind + '}' + : '{' + partial.join(',') + '}'; gap = mind; return v; } @@ -206,6 +376,15 @@ if (!this.JSON) { // If the JSON object does not yet have a stringify method, give it one. if (typeof JSON.stringify !== 'function') { + meta = { // table of character substitutions + '\b': '\\b', + '\t': '\\t', + '\n': '\\n', + '\f': '\\f', + '\r': '\\r', + '"': '\\"', + '\\': '\\\\' + }; JSON.stringify = function (value, replacer, space) { // The stringify method takes a value and an optional replacer, and an optional @@ -238,7 +417,7 @@ if (!this.JSON) { rep = replacer; if (replacer && typeof replacer !== 'function' && (typeof replacer !== 'object' || - typeof replacer.length !== 'number')) { + typeof replacer.length !== 'number')) { throw new Error('JSON.stringify'); } @@ -268,7 +447,7 @@ if (!this.JSON) { var k, v, value = holder[key]; if (value && typeof value === 'object') { for (k in value) { - if (Object.hasOwnProperty.call(value, k)) { + if (Object.prototype.hasOwnProperty.call(value, k)) { v = walk(value, k); if (v !== undefined) { value[k] = v; @@ -286,11 +465,12 @@ if (!this.JSON) { // Unicode characters with escape sequences. JavaScript handles many characters // incorrectly, either silently deleting them, or treating them as line endings. - cx.lastIndex = 0; - if (cx.test(text)) { - text = text.replace(cx, function (a) { + text = String(text); + rx_dangerous.lastIndex = 0; + if (rx_dangerous.test(text)) { + text = text.replace(rx_dangerous, function (a) { return '\\u' + - ('0000' + a.charCodeAt(0).toString(16)).slice(-4); + ('0000' + a.charCodeAt(0).toString(16)).slice(-4); }); } @@ -307,10 +487,14 @@ if (!this.JSON) { // we look to see that the remaining characters are only whitespace or ']' or // ',' or ':' or '{' or '}'. If that is so, then the text is safe for eval. - if (/^[\],:{}\s]*$/. -test(text.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, '@'). -replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']'). -replace(/(?:^|:|,)(?:\s*\[)+/g, ''))) { + if ( + rx_one.test( + text + .replace(rx_two, '@') + .replace(rx_three, ']') + .replace(rx_four, '') + ) + ) { // In the third stage we use the eval function to compile the text into a // JavaScript structure. The '{' operator is subject to a syntactic ambiguity @@ -322,8 +506,9 @@ replace(/(?:^|:|,)(?:\s*\[)+/g, ''))) { // In the optional fourth stage, we recursively walk the new structure, passing // each name/value pair to a reviver function for possible transformation. - return typeof reviver === 'function' ? - walk({'': j}, '') : j; + return typeof reviver === 'function' + ? walk({'': j}, '') + : j; } // If the text is not JSON parseable, then a SyntaxError is thrown.