Update website

admin/phpMyAdmin/libraries/classes/Scripts.php

@@ -0,0 +1,161 @@
+<?php
+/**
+ * JavaScript management
+ */
+
+declare(strict_types=1);
+
+namespace PhpMyAdmin;
+
+use function defined;
+use function md5;
+use function strpos;
+
+/**
+ * Collects information about which JavaScript
+ * files and objects are necessary to render
+ * the page and generates the relevant code.
+ */
+class Scripts
+{
+    /**
+     * An array of SCRIPT tags
+     *
+     * @access private
+     * @var array of strings
+     */
+    private $files;
+    /**
+     * A string of discrete javascript code snippets
+     *
+     * @access private
+     * @var string
+     */
+    private $code;
+
+    /** @var Template */
+    private $template;
+
+    /**
+     * Generates new Scripts objects
+     */
+    public function __construct()
+    {
+        $this->template = new Template();
+        $this->files  = [];
+        $this->code   = '';
+    }
+
+    /**
+     * Adds a new file to the list of scripts
+     *
+     * @param string $filename The name of the file to include
+     * @param array  $params   Additional parameters to pass to the file
+     *
+     * @return void
+     */
+    public function addFile(
+        $filename,
+        array $params = []
+    ) {
+        $hash = md5($filename);
+        if (! empty($this->files[$hash])) {
+            return;
+        }
+
+        $has_onload = $this->hasOnloadEvent($filename);
+        $this->files[$hash] = [
+            'has_onload' => $has_onload,
+            'filename' => $filename,
+            'params' => $params,
+        ];
+    }
+
+    /**
+     * Add new files to the list of scripts
+     *
+     * @param array $filelist The array of file names
+     *
+     * @return void
+     */
+    public function addFiles(array $filelist)
+    {
+        foreach ($filelist as $filename) {
+            $this->addFile($filename);
+        }
+    }
+
+    /**
+     * Determines whether to fire up an onload event for a file
+     *
+     * @param string $filename The name of the file to be checked
+     *                         against the exclude list.
+     *
+     * @return int 1 to fire up the event, 0 not to
+     */
+    private function hasOnloadEvent($filename)
+    {
+        if (strpos($filename, 'jquery') !== false
+            || strpos($filename, 'codemirror') !== false
+            || strpos($filename, 'messages.php') !== false
+            || strpos($filename, 'ajax.js') !== false
+            || strpos($filename, 'cross_framing_protection.js') !== false
+        ) {
+            return 0;
+        }
+
+        return 1;
+    }
+
+    /**
+     * Adds a new code snippet to the code to be executed
+     *
+     * @param string $code The JS code to be added
+     *
+     * @return void
+     */
+    public function addCode($code)
+    {
+        $this->code .= $code . "\n";
+    }
+
+    /**
+     * Returns a list with filenames and a flag to indicate
+     * whether to register onload events for this file
+     *
+     * @return array
+     */
+    public function getFiles()
+    {
+        $retval = [];
+        foreach ($this->files as $file) {
+            //If filename contains a "?", continue.
+            if (strpos($file['filename'], '?') !== false) {
+                continue;
+            }
+            $retval[] = [
+                'name' => $file['filename'],
+                'fire' => $file['has_onload'],
+            ];
+        }
+
+        return $retval;
+    }
+
+    /**
+     * Renders all the JavaScript file inclusions, code and events
+     *
+     * @return string
+     */
+    public function getDisplay()
+    {
+        $baseDir = defined('PMA_PATH_TO_BASEDIR') ? PMA_PATH_TO_BASEDIR : '';
+
+        return $this->template->render('scripts', [
+            'base_dir' => $baseDir,
+            'files' => $this->files,
+            'version' => PMA_VERSION,
+            'code' => $this->code,
+        ]);
+    }
+}