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authorKevin Chabowski <kevin@kch42.de>2011-08-03 16:16:11 +0200
committerKevin Chabowski <kevin@kch42.de>2011-08-03 16:16:11 +0200
commit2eeb281a46a7cdcd387ed69baaeafcceca4f8548 (patch)
treea6603d82676a83feec25799c8ca97c9287f7e94f /ratatoeskr/sys
parent8f431ef8af6c83aa9ebdcd8a2dd6252759127de1 (diff)
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URL processing implemented.
Diffstat (limited to 'ratatoeskr/sys')
-rw-r--r--ratatoeskr/sys/urlprocess.php110
1 files changed, 110 insertions, 0 deletions
diff --git a/ratatoeskr/sys/urlprocess.php b/ratatoeskr/sys/urlprocess.php
new file mode 100644
index 0000000..e81a0d4
--- /dev/null
+++ b/ratatoeskr/sys/urlprocess.php
@@ -0,0 +1,110 @@
+<?php
+/*
+ * File: urlprocess.php
+ *
+ * Providing functions / classes to handle URLs
+ *
+ * This file is part of Ratatöskr.
+ * Ratatöskr is licensed unter the MIT / X11 License.
+ * See "ratatoeskr/licenses/ratatoeskr" for more information.
+ */
+
+class Redirect extends Exception
+{
+ public $nextpath;
+ public function __construct($nextpath)
+ {
+ $this->nextpath = $nextpath;
+ parent::__construct();
+ }
+}
+
+class NotFoundError extends Exception { }
+
+function url_action_simple($function)
+{
+ return function(&$data, $url_now, &$url_next) use ($function)
+ {
+ try
+ {
+ $data = call_user_func($function, $data);
+ $url_next = array();
+ }
+ catch(Redirect $e)
+ {
+ $url_next = $e->nextpath;
+ }
+ };
+}
+
+function url_action_subactions($actions)
+{
+ return function (&$data, $url_now, &$url_next) use ($actions)
+ {
+ $result = url_process($url_next, $actions, $data);
+ if($result !== NULL)
+ $url_next = $result;
+ };
+}
+
+function url_process($url, $actions, &$data)
+{
+ $epilog_running = 0;
+ if(is_string($url))
+ $url = explode("/", $url);
+ if(count($url) == 0)
+ $url = array("_index");
+
+ if(isset($actions["_prelude"]))
+ $url = array_merge(array("_prelude"), $url);
+
+ $url_now = $url[0];
+ $url_next = array_slice($url, 1);
+
+ while(is_string($url_now) and ($url_now != "") and ($url_now != ".."))
+ {
+ $cb = NULL;
+ if(isset($actions[$url_now]))
+ $cb = $actions[$url_now];
+ else if(isset($actions["_default"]))
+ $cb = $actions["_default"];
+ else if(isset($actions["_notfound"]))
+ $cb = $actions["_notfound"];
+ else
+ throw new NotFoundError();
+
+ try
+ {
+ $cb($data, $url_now, $url_next);
+ }
+ catch(NotFoundError $e)
+ {
+ if(isset($actions["_notfound"]))
+ $url_next = array("_notfound");
+ else
+ throw $e;
+ }
+
+ if(count($url_next) > 0)
+ {
+ $url_now = $url_next[0];
+ $url_next = array_slice($url_next, 1);
+ }
+ else if(isset($actions["_epilog"]) and ($epilog_running <= 0))
+ {
+ $epilog_running = 2;
+ $url_now = "_epilog";
+ }
+ else
+ $url_now = "";
+
+ --$epilog_running;
+ }
+
+ if($url_now == "..")
+ return $url_next;
+ else
+ return NULL;
+}
+
+?>