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kolab_json_output.php
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kolab_json_output.php
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<?php
/*
+--------------------------------------------------------------------------+
| This file is part of the Kolab Web Admin Panel |
| |
| Copyright (C) 2011-2012, Kolab Systems AG |
| |
| This program is free software: you can redistribute it and/or modify |
| it under the terms of the GNU Affero General Public License as published |
| by the Free Software Foundation, either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU Affero General Public License for more details. |
| |
| You should have received a copy of the GNU Affero General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/> |
+--------------------------------------------------------------------------+
| Author: Jeroen van Meeuwen <vanmeeuwen@kolabsys.com> |
| Author: Aleksander Machniak <machniak@kolabsys.com> |
+--------------------------------------------------------------------------+
*/
/**
* View class generating JSON output
*/
class kolab_json_output
{
/**
* Send success response
*
* @param mixed $data Data
*/
public function success($data)
{
if (!is_array($data)) {
$data = array();
}
$this->send(array('status' => 'OK', 'result' => $data));
}
/**
* Send error response
*
* @param mixed $data Data
*/
public function error($errdata, $code = 400)
{
if (is_string($errdata)) {
$errdata = array('reason' => $errdata);
}
$this->send(array('status' => 'ERROR', 'code' => $code) + $errdata);
}
/**
* Send response
*
* @param mixed $data Data
*/
protected function send($data)
{
// Encode response
self::encode($data);
// Send response
header("Content-Type: application/json");
echo json_encode($data);
exit;
}
/**
* Parse response and base64-encode non-UTF8/binary data
*
* @param mixed $data Data
*
* @return bool True if data was encoded
*/
public static function encode(&$data)
{
if (is_array($data)) {
$encoded = array();
foreach (array_keys($data) as $key) {
if (self::encode($data[$key])) {
$encoded[] = $key;
}
}
if (!empty($encoded)) {
$data['__encoded'] = $encoded;
}
}
else if (is_string($data) && $data !== '') {
$result = @json_encode($data);
// In case of invalid characters json_encode returns "null"
if (($result === 'null' && $data != 'null') || $result === false) {
$data = base64_encode($data);
return true;
}
}
return false;
}
/**
* Parse response and base64-decode encoded data
*
* @param mixed $data Data
*/
public static function decode(&$data)
{
if (is_array($data)) {
$encoded = $data['__encoded'];
foreach ($data as $key => $value) {
if (is_array($value)) {
self::decode($data[$key]);
}
else if (is_string($value) && $encoded && in_array($key, $encoded)) {
$data[$key] = base64_decode($value);
}
}
unset($data['__encoded']);
}
}
}

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Mon, Apr 6, 3:27 AM (3 w, 6 d ago)
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kolab_json_output.php (4 KB)

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