some backend stuff for apps

include/apps.php

@@ -0,0 +1,53 @@
+<?php /** @file */
+
+/**
+ * apps
+ *
+ */
+
+require_once('include/plugin.php');
+
+function get_system_apps() {
+
+	$ret = array();
+	$files = glob('app/*.apd');
+	if($files) {
+		foreach($files as $f) {
+			$x = parse_app_description($f);
+			if($x) {
+				$ret[] = $x;
+			}
+		}
+	}
+	$files = glob('addon/*/*.apd');
+	if($files) {
+		foreach($files as $f) {
+			$n = basename($f,'.apd');
+			if(plugin_is_installed($n)) {
+				$x = parse_app_description($f);
+				if($x) {
+					$ret[] = $x;
+				}
+			}
+		}
+	}
+
+	return $ret;
+
+}
+
+
+function parse_app_description($f) {
+	$ret = array();
+
+	$lines = @file($f);
+	if($lines) {
+		foreach($lines as $x) {
+			if(preg_match('/^([a-zA-Z].*?):(.*?)$/ism',$x,$matches)) {
+				$ret[$matches[1]] = trim($matches[2]);
+			}
+		}
+	}
+
+	return $ret;
+}