egroupware/phpgwapi/js/jsapi/egw_utils.js
2012-03-28 13:58:18 +00:00

226 lines
4.2 KiB
JavaScript

/**
* EGroupware clientside API object
*
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @package etemplate
* @subpackage api
* @link http://www.egroupware.org
* @author Andreas Stöckel (as AT stylite.de)
* @author Ralf Becker <RalfBecker@outdoor-training.de>
* @version $Id$
*/
"use strict";
/*egw:uses
egw_core;
*/
egw.extend('utils', egw.MODULE_GLOBAL, function() {
function json_escape_string(input)
{
var len = input.length;
var res = "";
for (var i = 0; i < len; i++)
{
switch (input.charAt(i))
{
case '"':
res += '\\"';
break;
case '\n':
res += '\\n';
break;
case '\r':
res += '\\r';
break;
case '\\':
res += '\\\\';
break;
case '\/':
res += '\\/';
break;
case '\b':
res += '\\b';
break;
case '\f':
res += '\\f';
break;
case '\t':
res += '\\t';
break;
default:
res += input.charAt(i);
}
}
return res;
}
function json_encode_simple(input)
{
switch (input.constructor)
{
case String:
return '"' + json_escape_string(input) + '"';
case Number:
return input.toString();
case Boolean:
return input ? 'true' : 'false';
default:
return null;
}
}
function json_encode(input)
{
if (input == null || !input && input.length == 0) return 'null';
var simple_res = json_encode_simple(input);
if (simple_res == null)
{
switch (input.constructor)
{
case Array:
var buf = [];
for (var k in input)
{
//Filter non numeric entries
if (!isNaN(k))
buf.push(json_encode(input[k]));
}
return '[' + buf.join(',') + ']';
case Object:
var buf = [];
for (var k in input)
{
buf.push(json_encode_simple(k) + ':' + json_encode(input[k]));
}
return '{' + buf.join(',') + '}';
default:
switch(typeof input)
{
case 'array':
var buf = [];
for (var k in input)
{
//Filter non numeric entries
if (!isNaN(k))
buf.push(json_encode(input[k]));
}
return '[' + buf.join(',') + ']';
case 'object':
var buf = [];
for (var k in input)
{
buf.push(json_encode_simple(k) + ':' + json_encode(input[k]));
}
return '{' + buf.join(',') + '}';
}
return 'null';
}
}
else
{
return simple_res;
}
}
var uid_counter = 0;
// Create the utils object which contains references to all functions
// covered by it.
var utils = {
ajaxUrl: function(_menuaction) {
return this.webserverUrl + '/json.php?menuaction=' + _menuaction;
},
elemWindow: function(_elem) {
var res =
_elem.ownerDocument.parentNode ||
_elem.ownerDocument.defaultView;
return res;
},
uid: function() {
return (uid_counter++).toString(16);
},
/**
* Decode encoded vfs special chars
*
* @param string _path path to decode
* @return string
*/
decodePath: function(_path) {
return decodeURIComponent(_path);
},
/**
* Encode vfs special chars excluding /
*
* @param string _path path to decode
* @return string
*/
encodePath: function(_path) {
var components = _path.split('/');
for(var n=0; n < components.length; n++)
{
components[n] = this.encodePathComponent(components[n]);
}
return components.join('/');
},
/**
* Encode vfs special chars removing /
*
* //'%' => '%25', // % should be encoded, but easily leads to double encoding, therefore better NOT encodig it
* '#' => '%23',
* '?' => '%3F',
* '/' => '', // better remove it completly
*
* @param string _path path to decode
* @return string
*/
/*
*/
encodePathComponent: function(_comp) {
return _comp.replace(/#/g,'%23').replace(/\?/g,'%3F').replace(/\//g,'');
}
};
// Check whether the browser already supports encoding JSON -- if yes, use
// its implementation, otherwise our own
if (typeof window.JSON !== 'undefined' && typeof window.JSON.stringify !== 'undefined')
{
utils["jsonEncode"] = JSON.stringify;
}
else
{
utils["jsonEncode"] = json_encode;
}
// Return the extension
return utils;
});