first commit

wp-content/plugins/unyson/uninstall.php

@@ -0,0 +1,91 @@
+<?php if ( !defined( 'WP_UNINSTALL_PLUGIN' ) ) die('Forbidden');
+
+/**
+ * Remove all plugin and extensions data
+ * Search in all extensions and include the uninstall.php file
+ *
+ * WARNING!
+ * The uninstall.php file must not contain:
+ * <?php if ( !defined( 'FW' ) ) die('Forbidden');
+ * because the framework is not loaded at this point, use:
+ * <?php if ( !defined( 'WP_UNINSTALL_PLUGIN' ) ) die('Forbidden');
+ */
+
+function _include_file_isolated($path) {
+	include $path;
+}
+
+class FW_Plugin_Uninstall
+{
+	/**
+	 * All extensions with uninstall.php
+	 * @var array
+	 */
+	private $extensions = array();
+
+	public function __construct()
+	{
+		$this->read_extensions(
+			dirname(__FILE__) .'/framework/extensions',
+			$this->extensions
+		);
+
+		{
+			/** @var wpdb $wpdb */
+			global $wpdb;
+
+			$this->uninstall();
+
+			if ( is_multisite() ) { // http://wordpress.stackexchange.com/a/80351/60424
+				$original_blog_id = get_current_blog_id();
+
+				foreach (
+					$wpdb->get_col( "SELECT blog_id FROM $wpdb->blogs" )
+					as $blog_id
+				) {
+					switch_to_blog( $blog_id );
+
+					$this->uninstall();
+				}
+
+				switch_to_blog( $original_blog_id );
+			}
+		}
+	}
+
+	private function read_extensions($dir, &$extensions)
+	{
+		$ext_dirs = glob($dir .'/*', GLOB_ONLYDIR);
+
+		if (empty($ext_dirs)) {
+			return;
+		}
+
+		foreach ($ext_dirs as $ext_dir) {
+			if (
+				file_exists($ext_dir .'/manifest.php')
+				&&
+				file_exists($ext_dir .'/uninstall.php')
+			) {
+				$extensions[ basename($ext_dir) ] = $ext_dir .'/uninstall.php';
+			}
+
+			$this->read_extensions($ext_dir .'/extensions', $extensions);
+		}
+	}
+
+	private function uninstall()
+	{
+		// Remove framework data
+		{
+			// ...
+		}
+
+		// Remove extensions data
+		foreach ($this->extensions as $uninstall_file) {
+			_include_file_isolated($uninstall_file);
+		}
+	}
+}
+
+new FW_Plugin_Uninstall();