emergencysite/lib/ess-json2.js

if (typeof JSON !== 'object') {
	JSON = {};
}
(function () {
	'use strict';

	function f(n) {
		return n < 10 ? '0' + n : n;
	}
	if (typeof Date.prototype.toJSON !== 'function') {
		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;
		};
		String.prototype.toJSON =
			Number.prototype.toJSON =
			Boolean.prototype.toJSON = function () {
				return this.valueOf();
		};
	}
	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, indent, meta = {
			'\b': '\\b',
			'\t': '\\t',
			'\n': '\\n',
			'\f': '\\f',
			'\r': '\\r',
			'"': '\\"',
			'\\': '\\\\'
		}, rep;

	function quote(string) {
		escapable.lastIndex = 0;
		return escapable.test(string) ? '"' + string.replace(escapable, function (a) {
			var c = meta[a];
			return typeof c === 'string' ? c : '\\u' + ('0000' + a.charCodeAt(0).toString(
				16)).slice(-4);
		}) + '"' : '"' + string + '"';
	}

	function str(key, holder) {
		var i, k, v, length, mind = gap,
			partial, value = holder[key];
		if (value && typeof value === 'object' &&
			typeof value.toJSON === 'function') {
			value = value.toJSON(key);
		}
		if (typeof rep === 'function') {
			value = rep.call(holder, key, value);
		}
		switch (typeof value) {
		case 'string':
			return quote(value);
		case 'number':
			return isFinite(value) ? String(value) : 'null';
		case 'boolean':
		case 'null':
			return String(value);
		case 'object':
			if (!value) {
				return 'null';
			}
			gap += indent;
			partial = [];
			if (Object.prototype.toString.apply(value) === '[object Array]') {
				length = value.length;
				for (i = 0; i < length; i += 1) {
					partial[i] = str(i, value) || 'null';
				}
				v = partial.length === 0 ? '[]' : gap ? '[\n' + gap + partial.join(',\n' +
					gap) + '\n' + mind + ']' : '[' + partial.join(',') + ']';
				gap = mind;
				return v;
			}
			if (rep && typeof rep === 'object') {
				length = rep.length;
				for (i = 0; i < length; i += 1) {
					if (typeof rep[i] === 'string') {
						k = rep[i];
						v = str(k, value);
						if (v) {
							partial.push(quote(k) + (gap ? ': ' : ':') + v);
						}
					}
				}
			} else {
				for (k in value) {
					if (Object.prototype.hasOwnProperty.call(value, k)) {
						v = str(k, value);
						if (v) {
							partial.push(quote(k) + (gap ? ': ' : ':') + v);
						}
					}
				}
			}
			v = partial.length === 0 ? '{}' : gap ? '{\n' + gap + partial.join(',\n' +
				gap) + '\n' + mind + '}' : '{' + partial.join(',') + '}';
			gap = mind;
			return v;
		}
	}
	if (typeof JSON.stringify !== 'function') {
		JSON.stringify = function (value, replacer, space) {
			var i;
			gap = '';
			indent = '';
			if (typeof space === 'number') {
				for (i = 0; i < space; i += 1) {
					indent += ' ';
				}
			} else if (typeof space === 'string') {
				indent = space;
			}
			rep = replacer;
			if (replacer && typeof replacer !== 'function' &&
				(typeof replacer !== 'object' ||
					typeof replacer.length !== 'number')) {
				throw new Error('JSON.stringify');
			}
			return str('', {
				'': value
			});
		};
	}
	if (typeof JSON.parse !== 'function') {
		JSON.parse = function (text, reviver) {
			var j;

			function walk(holder, key) {
				var k, v, value = holder[key];
				if (value && typeof value === 'object') {
					for (k in value) {
						if (Object.prototype.hasOwnProperty.call(value, k)) {
							v = walk(value, k);
							if (v !== undefined) {
								value[k] = v;
							} else {
								delete value[k];
							}
						}
					}
				}
				return reviver.call(holder, key, value);
			}
			text = String(text);
			cx.lastIndex = 0;
			if (cx.test(text)) {
				text = text.replace(cx, function (a) {
					return '\\u' +
						('0000' + a.charCodeAt(0).toString(16)).slice(-4);
				});
			}
			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, ''))) {
				j = eval('(' + text + ')');
				return typeof reviver === 'function' ? walk({
					'': j
				}, '') : j;
			}
			throw new SyntaxError('JSON.parse');
		};
	}
}());