140 lines
3.6 KiB
PHP
140 lines
3.6 KiB
PHP
<?php
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/**
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* Piwik - Open source web analytics
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*
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* @link http://piwik.org
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* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
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*
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*/
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namespace Piwik\DataTable\Renderer;
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use Piwik\Common;
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use Piwik\DataTable\Renderer;
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use Piwik\DataTable;
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use Piwik\ProxyHttp;
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/**
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* JSON export.
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* Works with recursive DataTable (when a row can be associated with a subDataTable).
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*
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*/
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class Json extends Renderer
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{
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/**
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* Computes the dataTable output and returns the string/binary
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*
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* @return string
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*/
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public function render()
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{
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$this->renderHeader();
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return $this->renderTable($this->table);
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}
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/**
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* Computes the exception output and returns the string/binary
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*
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* @return string
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*/
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function renderException()
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{
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$this->renderHeader();
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$exceptionMessage = $this->getExceptionMessage();
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$exceptionMessage = str_replace(array("\r\n", "\n"), "", $exceptionMessage);
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$result = json_encode(array('result' => 'error', 'message' => $exceptionMessage));
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return $this->jsonpWrap($result);
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}
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/**
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* Computes the output for the given data table
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*
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* @param DataTable $table
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* @return string
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*/
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protected function renderTable($table)
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{
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if (is_array($table)) {
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$array = $table;
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if (self::shouldWrapArrayBeforeRendering($array, $wrapSingleValues = true)) {
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$array = array($array);
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}
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foreach ($array as $key => $tab) {
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if ($tab instanceof DataTable\Map
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|| $tab instanceof DataTable
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|| $tab instanceof DataTable\Simple) {
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$array[$key] = $this->convertDataTableToArray($tab);
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if (!is_array($array[$key])) {
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$array[$key] = array('value' => $array[$key]);
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}
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}
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}
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} else {
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$array = $this->convertDataTableToArray($table);
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}
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if (!is_array($array)) {
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$array = array('value' => $array);
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}
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// decode all entities
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$callback = function (&$value, $key) {
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if (is_string($value)) {
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$value = html_entity_decode($value, ENT_QUOTES, "UTF-8");
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};
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};
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array_walk_recursive($array, $callback);
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$str = json_encode($array);
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return $this->jsonpWrap($str);
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}
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/**
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* @param $str
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* @return string
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*/
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protected function jsonpWrap($str)
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{
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if (($jsonCallback = Common::getRequestVar('callback', false)) === false)
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$jsonCallback = Common::getRequestVar('jsoncallback', false);
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if ($jsonCallback !== false) {
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if (preg_match('/^[0-9a-zA-Z_.]*$/D', $jsonCallback) > 0) {
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$str = $jsonCallback . "(" . $str . ")";
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}
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}
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return $str;
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}
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/**
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* Sends the http header for json file
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*/
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protected function renderHeader()
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{
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self::sendHeaderJSON();
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ProxyHttp::overrideCacheControlHeaders();
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}
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public static function sendHeaderJSON()
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{
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@header('Content-Type: application/json; charset=utf-8');
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}
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private function convertDataTableToArray($table)
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{
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$renderer = new Php();
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$renderer->setTable($table);
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$renderer->setRenderSubTables($this->isRenderSubtables());
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$renderer->setSerialize(false);
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$renderer->setHideIdSubDatableFromResponse($this->hideIdSubDatatable);
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$array = $renderer->flatRender();
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return $array;
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}
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}
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