1 files changed, 76 insertions, 0 deletions
diff --git a/Zotlabs/Extend/Hook.php b/Zotlabs/Extend/Hook.php
new file mode 100644
index 000000000..836b29db8
--- /dev/null
+++ b/Zotlabs/Extend/Hook.php
@@ -0,0 +1,76 @@
+<?php
+
+namespace Zotlabs\Extend;
+
+
+class Hook {
+
+	static public function register($hook,$file,$function,$version = 1,$priority = 0) {
+		$r = q("SELECT * FROM `hook` WHERE `hook` = '%s' AND `file` = '%s' AND `function` = '%s' and priority = %d and hook_version = %d LIMIT 1",
+			dbesc($hook),
+			dbesc($file),
+			dbesc($function),
+			intval($priority),
+			intval($version)
+		);
+		if($r)
+			return true;
+
+		$r = q("INSERT INTO `hook` (`hook`, `file`, `function`, `priority`, `hook_version`) VALUES ( '%s', '%s', '%s', %d, %d )",
+			dbesc($hook),
+			dbesc($file),
+			dbesc($function),
+			intval($priority),
+			intval($version)
+		);
+
+		return $r;
+	}
+
+	static public function unregister($hook,$file,$function,$version = 1,$priority = 0) {
+		$r = q("DELETE FROM hook WHERE hook = '%s' AND `file` = '%s' AND `function` = '%s' and priority = %d and hook_version = %d",
+			dbesc($hook),
+			dbesc($file),
+			dbesc($function),
+			intval($priority),
+			intval($version)
+		);
+
+		return $r;
+	}
+
+
+	/**
+	 * @brief Inserts a hook into a page request.
+	 *
+	 * Insert a short-lived hook into the running page request.
+	 * Hooks are normally persistent so that they can be called
+	 * across asynchronous processes such as delivery and poll
+	 * processes.
+	 *
+	 * insert_hook lets you attach a hook callback immediately
+	 * which will not persist beyond the life of this page request
+	 * or the current process.
+	 *
+	 * @param string $hook
+	 *     name of hook to attach callback
+	 * @param string $fn
+	 *     function name of callback handler
+	 * @param int $version
+	 *     hook interface version, 0 uses two callback params, 1 uses one callback param
+	 * @param int $priority
+	 *     currently not implemented in this function, would require the hook array to be resorted
+	 */
+
+	static public function insert($hook, $fn, $version = 0, $priority = 0) {
+
+		if(! is_array(App::$hooks))
+			App::$hooks = array();
+
+		if(! array_key_exists($hook, App::$hooks))
+			App::$hooks[$hook] = array();
+
+		App::$hooks[$hook][] = array('', $fn, $priority, $version);
+	}
+
+}
+\ No newline at end of file