From 1eefdb1c5b03e22f80fbcb5e49eeefcd5b2dd767 Mon Sep 17 00:00:00 2001
From: Michael Hamann <michael@content-space.de>
Date: Sun, 30 Dec 2012 17:06:01 +0100
Subject: [PATCH] Extract the page rewriting code into a helper function

---
 action.php | 19 ++++---------------
 helper.php | 26 ++++++++++++++++++++++++++
 2 files changed, 30 insertions(+), 15 deletions(-)

diff --git a/action.php b/action.php
index 4786ff6..a80e8a2 100644
--- a/action.php
+++ b/action.php
@@ -35,21 +35,10 @@ function handle_read(Doku_Event $event, $param) {
         if ((isset($ACT) && (in_array($ACT, array('save', 'preview', 'recover', 'revert'))))
             || checklock($id) !== false) return;
 
-        $meta = p_get_metadata($id, 'plugin_pagemove', METADATA_DONT_RENDER);
-        if ($meta && isset($meta['moves'])) {
-            $stack[$id] = true;
-            $helper = $this->loadHelper('pagemove', true);
-            if (!is_null($helper)) {
-                $event->result = $helper->rewrite_content($event->result, $id, $meta['moves']);
-            }
-            $file = wikiFN($id, '', false);
-            if (is_writable($file)) {
-                saveWikiText($id,$event->result,$this->getLang('pm_linkchange'));
-                unset($meta['moves']);
-                p_set_metadata($id, array('plugin_pagemove' => $meta), false, true);
-            } else { // FIXME: print error here or fail silently?
-                msg('Error: Page '.hsc($id).' needs to be rewritten because of page renames but is not writable.', -1);
-            }
+        $helper = $this->loadHelper('pagemove', true);
+        if(!is_null($helper)) {
+            $stack[$id]    = true;
+            $event->result = $helper->execute_rewrites($id, $event->result);
             unset($stack[$id]);
         }
     }
diff --git a/helper.php b/helper.php
index 1b4b0a3..fa85983 100644
--- a/helper.php
+++ b/helper.php
@@ -247,6 +247,32 @@ private function move_files($dir, $opts, $extregex) {
         }
     }
 
+    /**
+     * Rewrite the text of a page according to the recorded moves, the rewritten text is saved
+     *
+     * @param string      $id   The id of the page that shall be rewritten
+     * @param string|null $text Old content of the page. When null is given the content is loaded from disk.
+     * @return string The rewritten content
+     */
+    public function execute_rewrites($id, $text = null) {
+        $meta = p_get_metadata($id, 'plugin_pagemove', METADATA_DONT_RENDER);
+        if($meta && isset($meta['moves'])) {
+            if(is_null($text)) $text = rawWiki($id);
+
+            $text = $this->rewrite_content($text, $id, $meta['moves']);
+            $file = wikiFN($id, '', false);
+            if(is_writable($file)) {
+                saveWikiText($id, $text, $this->getLang('pm_linkchange'));
+                unset($meta['moves']);
+                p_set_metadata($id, array('plugin_pagemove' => $meta), false, true);
+            } else { // FIXME: print error here or fail silently?
+                msg('Error: Page '.hsc($id).' needs to be rewritten because of page renames but is not writable.', -1);
+            }
+        }
+
+        return $text;
+    }
+
     /**
      * Rewrite a text in order to fix the content after the given moves.
      *