git-svn-id: https://msi/svn/firstRepo/Service/trunk@19 0f545695-f87b-41b6-9a03-7f16563b5454

2014-12-10 15:14:03 +00:00
parent 82eca852ad
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+<?php
+/**
+ * Slim - a micro PHP 5 framework
+ *
+ * @author      Josh Lockhart <[email protected]>
+ * @copyright   2011 Josh Lockhart
+ * @link        http://www.slimframework.com
+ * @license     http://www.slimframework.com/license
+ * @version     2.4.2
+ * @package     Slim
+ *
+ * MIT LICENSE
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+namespace Slim\Middleware;
+
+ /**
+  * Content Types
+  *
+  * This is middleware for a Slim application that intercepts
+  * the HTTP request body and parses it into the appropriate
+  * PHP data structure if possible; else it returns the HTTP
+  * request body unchanged. This is particularly useful
+  * for preparing the HTTP request body for an XML or JSON API.
+  *
+  * @package    Slim
+  * @author     Josh Lockhart
+  * @since      1.6.0
+  */
+class ContentTypes extends \Slim\Middleware
+{
+    /**
+     * @var array
+     */
+    protected $contentTypes;
+
+    /**
+     * Constructor
+     * @param array $settings
+     */
+    public function __construct($settings = array())
+    {
+        $defaults = array(
+            'application/json' => array($this, 'parseJson'),
+            'application/xml' => array($this, 'parseXml'),
+            'text/xml' => array($this, 'parseXml'),
+            'text/csv' => array($this, 'parseCsv')
+        );
+        $this->contentTypes = array_merge($defaults, $settings);
+    }
+
+    /**
+     * Call
+     */
+    public function call()
+    {
+        $mediaType = $this->app->request()->getMediaType();
+        if ($mediaType) {
+            $env = $this->app->environment();
+            $env['slim.input_original'] = $env['slim.input'];
+            $env['slim.input'] = $this->parse($env['slim.input'], $mediaType);
+        }
+        $this->next->call();
+    }
+
+    /**
+     * Parse input
+     *
+     * This method will attempt to parse the request body
+     * based on its content type if available.
+     *
+     * @param  string $input
+     * @param  string $contentType
+     * @return mixed
+     */
+    protected function parse ($input, $contentType)
+    {
+        if (isset($this->contentTypes[$contentType]) && is_callable($this->contentTypes[$contentType])) {
+            $result = call_user_func($this->contentTypes[$contentType], $input);
+            if ($result) {
+                return $result;
+            }
+        }
+
+        return $input;
+    }
+
+    /**
+     * Parse JSON
+     *
+     * This method converts the raw JSON input
+     * into an associative array.
+     *
+     * @param  string       $input
+     * @return array|string
+     */
+    protected function parseJson($input)
+    {
+        if (function_exists('json_decode')) {
+            $result = json_decode($input, true);
+            if ($result) {
+                return $result;
+            }
+        }
+    }
+
+    /**
+     * Parse XML
+     *
+     * This method creates a SimpleXMLElement
+     * based upon the XML input. If the SimpleXML
+     * extension is not available, the raw input
+     * will be returned unchanged.
+     *
+     * @param  string                  $input
+     * @return \SimpleXMLElement|string
+     */
+    protected function parseXml($input)
+    {
+        if (class_exists('SimpleXMLElement')) {
+            try {
+                $backup = libxml_disable_entity_loader(true);
+                $result = new \SimpleXMLElement($input);
+                libxml_disable_entity_loader($backup);
+                return $result;
+            } catch (\Exception $e) {
+                // Do nothing
+            }
+        }
+
+        return $input;
+    }
+
+    /**
+     * Parse CSV
+     *
+     * This method parses CSV content into a numeric array
+     * containing an array of data for each CSV line.
+     *
+     * @param  string $input
+     * @return array
+     */
+    protected function parseCsv($input)
+    {
+        $temp = fopen('php://memory', 'rw');
+        fwrite($temp, $input);
+        fseek($temp, 0);
+        $res = array();
+        while (($data = fgetcsv($temp)) !== false) {
+            $res[] = $data;
+        }
+        fclose($temp);
+
+        return $res;
+    }
+}