questlab/www/analytics/core/DataTable/Renderer/Json.php
2016-04-10 18:55:57 +02:00

95 lines
2.5 KiB
PHP

<?php
/**
* Piwik - free/libre analytics platform
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
*/
namespace Piwik\DataTable\Renderer;
use Piwik\Common;
use Piwik\DataTable\Renderer;
use Piwik\DataTable;
/**
* JSON export.
* Works with recursive DataTable (when a row can be associated with a subDataTable).
*
*/
class Json extends Renderer
{
/**
* Computes the dataTable output and returns the string/binary
*
* @return string
*/
public function render()
{
return $this->renderTable($this->table);
}
/**
* Computes the output for the given data table
*
* @param DataTable $table
* @return string
*/
protected function renderTable($table)
{
if (is_array($table)) {
$array = $table;
if (self::shouldWrapArrayBeforeRendering($array, $wrapSingleValues = true)) {
$array = array($array);
}
foreach ($array as $key => $tab) {
if ($tab instanceof DataTable\Map
|| $tab instanceof DataTable
|| $tab instanceof DataTable\Simple) {
$array[$key] = $this->convertDataTableToArray($tab);
if (!is_array($array[$key])) {
$array[$key] = array('value' => $array[$key]);
}
}
}
} else {
$array = $this->convertDataTableToArray($table);
}
if (!is_array($array)) {
$array = array('value' => $array);
}
// decode all entities
$callback = function (&$value, $key) {
if (is_string($value)) {
$value = html_entity_decode($value, ENT_QUOTES, "UTF-8");
};
};
array_walk_recursive($array, $callback);
// silence "Warning: json_encode(): Invalid UTF-8 sequence in argument"
$str = @json_encode($array);
return $str;
}
public static function sendHeaderJSON()
{
Common::sendHeader('Content-Type: application/json; charset=utf-8');
}
private function convertDataTableToArray($table)
{
$renderer = new Php();
$renderer->setTable($table);
$renderer->setRenderSubTables($this->isRenderSubtables());
$renderer->setSerialize(false);
$renderer->setHideIdSubDatableFromResponse($this->hideIdSubDatatable);
$array = $renderer->flatRender();
return $array;
}
}