function unserialize (data) {
// From: http://phpjs.org/functions
// + improved by: Pedro Tainha (http://www.pedrotainha.com)
// + bugfixed by: dptr1988
// + revised by: d3x
// + improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// + input by: Brett Zamir (http://brett-zamir.me)
// + improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// + improved by: Chris
// + improved by: James
// + input by: Martin (http://www.erlenwiese.de/)
// + bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// + improved by: Le Torbi
// + input by: kilops
// + bugfixed by: Brett Zamir (http://brett-zamir.me)
// + input by: Jaroslaw Czarniak
// + improved by: Eli Skeggs
// % note: We feel the main purpose of this function should be to ease the transport of data between php & js
// % note: Aiming for PHP-compatibility, we have to translate objects to arrays
// * example 1: unserialize('a:3:{i:0;s:5:"Kevin";i:1;s:3:"van";i:2;s:9:"Zonneveld";}');
// * returns 1: ['Kevin', 'van', 'Zonneveld']
// * example 2: unserialize('a:3:{s:9:"firstName";s:5:"Kevin";s:7:"midName";s:3:"van";s:7:"surName";s:9:"Zonneveld";}');
// * returns 2: {firstName: 'Kevin', midName: 'van', surName: 'Zonneveld'}
var that = this,
utf8Overhead = function (chr) {
// http://phpjs.org/functions/unserialize:571#comment_95906
var code = chr.charCodeAt(0);
if (code < 0x0080) {
return 0;
}
if (code < 0x0800) {
return 1;
}
return 2;
},
error = function (type, msg, filename, line) {
throw new that.window[type](msg, filename, line);
},
read_until = function (data, offset, stopchr) {
var i = 2, buf = [], chr = data.slice(offset, offset + 1);
while (chr != stopchr) {
if ((i + offset) > data.length) {
error('Error', 'Invalid');
}
buf.push(chr);
chr = data.slice(offset + (i - 1), offset + i);
i += 1;
}
return [buf.length, buf.join('')];
},
read_chrs = function (data, offset, length) {
var i, chr, buf;
buf = [];
for (i = 0; i < length; i++) {
chr = data.slice(offset + (i - 1), offset + i);
buf.push(chr);
length -= utf8Overhead(chr);
}
return [buf.length, buf.join('')];
},
_unserialize = function (data, offset) {
var dtype, dataoffset, keyandchrs, keys, contig,
length, array, readdata, readData, ccount,
stringlength, i, key, kprops, kchrs, vprops,
vchrs, value, chrs = 0,
typeconvert = function (x) {
return x;
};
if (!offset) {
offset = 0;
}
dtype = (data.slice(offset, offset + 1)).toLowerCase();
dataoffset = offset + 2;
switch (dtype) {
case 'i':
typeconvert = function (x) {
return parseInt(x, 10);
};
readData = read_until(data, dataoffset, ';');
chrs = readData[0];
readdata = readData[1];
dataoffset += chrs + 1;
break;
case 'b':
typeconvert = function (x) {
return parseInt(x, 10) !== 0;
};
readData = read_until(data, dataoffset, ';');
chrs = readData[0];
readdata = readData[1];
dataoffset += chrs + 1;
break;
case 'd':
typeconvert = function (x) {
return parseFloat(x);
};
readData = read_until(data, dataoffset, ';');
chrs = readData[0];
readdata = readData[1];
dataoffset += chrs + 1;
break;
case 'n':
readdata = null;
break;
case 's':
ccount = read_until(data, dataoffset, ':');
chrs = ccount[0];
stringlength = ccount[1];
dataoffset += chrs + 2;
readData = read_chrs(data, dataoffset + 1, parseInt(stringlength, 10));
chrs = readData[0];
readdata = readData[1];
dataoffset += chrs + 2;
if (chrs != parseInt(stringlength, 10) && chrs != readdata.length) {
error('SyntaxError', 'String length mismatch');
}
break;
case 'a':
readdata = {};
keyandchrs = read_until(data, dataoffset, ':');
chrs = keyandchrs[0];
keys = keyandchrs[1];
dataoffset += chrs + 2;
length = parseInt(keys, 10);
contig = true;
for (i = 0; i < length; i++) {
kprops = _unserialize(data, dataoffset);
kchrs = kprops[1];
key = kprops[2];
dataoffset += kchrs;
vprops = _unserialize(data, dataoffset);
vchrs = vprops[1];
value = vprops[2];
dataoffset += vchrs;
if (key !== i)
contig = false;
readdata[key] = value;
}
if (contig) {
array = new Array(length);
for (i = 0; i < length; i++)
array[i] = readdata[i];
readdata = array;
}
dataoffset += 1;
break;
default:
error('SyntaxError', 'Unknown / Unhandled data type(s): ' + dtype);
break;
}
return [dtype, dataoffset - offset, typeconvert(readdata)];
}
;
return _unserialize((data + ''), 0)[2];
}