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serialize.js
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serialize.js
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// unserialises php objects (useful for WordPress functions)
var unserialize = function(data) {
// http://kevin.vanzonneveld.net
// + original by: Arpad Ray (mailto:arpad@php.net)
// + 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)
// - depends on: utf8_decode
// % 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;
var 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;
};
var error = function (type, msg, filename, line) {
throw new that.window[type](msg, filename, line);
};
var read_until = function (data, offset, stopchr) {
var buf = [];
var chr = data.slice(offset, offset + 1);
var i = 2;
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('')];
};
var read_chrs = function (data, offset, length) {
var buf;
buf = [];
for (var i = 0; i < length; i++) {
var chr = data.slice(offset + (i - 1), offset + i);
buf.push(chr);
length -= utf8Overhead(chr);
}
return [buf.length, buf.join('')];
};
var _unserialize = function (data, offset) {
var readdata;
var readData;
var chrs = 0;
var ccount;
var stringlength;
var keyandchrs;
var keys;
if (!offset) {
offset = 0;
}
var dtype = (data.slice(offset, offset + 1)).toLowerCase();
var dataoffset = offset + 2;
var typeconvert = function (x) {
return x;
};
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');
}
// Length was calculated on an utf-8 encoded string
// so wait with decoding
var utf8 = require('utf8');
readdata = utf8.decode(readdata);
//readdata = that.utf8_decode(readdata);
break;
case 'a':
readdata = {};
keyandchrs = read_until(data, dataoffset, ':');
chrs = keyandchrs[0];
keys = keyandchrs[1];
dataoffset += chrs + 2;
for (var i = 0; i < parseInt(keys, 10); i++) {
var kprops = _unserialize(data, dataoffset);
var kchrs = kprops[1];
var key = kprops[2];
dataoffset += kchrs;
var vprops = _unserialize(data, dataoffset);
var vchrs = vprops[1];
var value = vprops[2];
dataoffset += vchrs;
readdata[key] = value;
}
dataoffset += 1;
break;
default:
error('SyntaxError', 'Unknown / Unhandled data type(s): ' + dtype);
break;
}
return [dtype, dataoffset - offset, typeconvert(readdata)];
};
return _unserialize((data + ''), 0)[2];
};
exports.unserialize = unserialize;
var serialize = function(mixed_value) {
// http://kevin.vanzonneveld.net
// + original by: Arpad Ray (mailto:arpad@php.net)
// + improved by: Dino
// + bugfixed by: Andrej Pavlovic
// + bugfixed by: Garagoth
// + input by: DtTvB (http://dt.in.th/2008-09-16.string-length-in-bytes.html)
// + bugfixed by: Russell Walker (http://www.nbill.co.uk/)
// + bugfixed by: Jamie Beck (http://www.terabit.ca/)
// + input by: Martin (http://www.erlenwiese.de/)
// + bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net/)
// + improved by: Le Torbi (http://www.letorbi.de/)
// + improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net/)
// + bugfixed by: Ben (http://benblume.co.uk/)
// - depends on: utf8_encode
// % 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: serialize(['Kevin', 'van', 'Zonneveld']);
// * returns 1: 'a:3:{i:0;s:5:"Kevin";i:1;s:3:"van";i:2;s:9:"Zonneveld";}'
// * example 2: serialize({firstName: 'Kevin', midName: 'van', surName: 'Zonneveld'});
// * returns 2: 'a:3:{s:9:"firstName";s:5:"Kevin";s:7:"midName";s:3:"van";s:7:"surName";s:9:"Zonneveld";}'
var _utf8Size = function (str) {
var size = 0,
i = 0,
l = str.length,
code = '';
for (i = 0; i < l; i++) {
code = str.charCodeAt(i);
if (code < 0x0080) {
size += 1;
} else if (code < 0x0800) {
size += 2;
} else {
size += 3;
}
}
return size;
};
var _getType = function (inp) {
var type = typeof inp,
match;
var key;
if (type === 'object' && !inp) {
return 'null';
}
if (type === "object") {
if (!inp.constructor) {
return 'object';
}
var cons = inp.constructor.toString();
match = cons.match(/(\w+)\(/);
if (match) {
cons = match[1].toLowerCase();
}
var types = ["boolean", "number", "string", "array"];
for (key in types) {
if (cons == types[key]) {
type = types[key];
break;
}
}
}
return type;
};
var type = _getType(mixed_value);
var val, ktype = '';
switch (type) {
case "function":
val = "";
break;
case "boolean":
val = "b:" + (mixed_value ? "1" : "0");
break;
case "number":
val = (Math.round(mixed_value) == mixed_value ? "i" : "d") + ":" + mixed_value;
break;
case "string":
val = "s:" + _utf8Size(mixed_value) + ":\"" + mixed_value + "\"";
break;
case "array":
case "object":
val = "a";
/*
if (type == "object") {
var objname = mixed_value.constructor.toString().match(/(\w+)\(\)/);
if (objname == undefined) {
return;
}
objname[1] = this.serialize(objname[1]);
val = "O" + objname[1].substring(1, objname[1].length - 1);
}
*/
var count = 0;
var vals = "";
var okey;
var key;
for (key in mixed_value) {
if (mixed_value.hasOwnProperty(key)) {
ktype = _getType(mixed_value[key]);
if (ktype === "function") {
continue;
}
okey = (key.match(/^[0-9]+$/) ? parseInt(key, 10) : key);
vals += this.serialize(okey) + this.serialize(mixed_value[key]);
count++;
}
}
val += ":" + count + ":{" + vals + "}";
break;
case "undefined":
// Fall-through
val = "N";
break;
default:
// if the JS object has a property which contains a null value, the string cannot be unserialized by PHP
val = "N";
break;
}
if (type !== "object" && type !== "array") {
val += ";";
}
return val;
};
exports.serialize = serialize;