From 34adfa0f5cc75862091660cc77be8b796d8d29bc Mon Sep 17 00:00:00 2001
From: gbateson <gbateson>
Date: Tue, 25 Aug 2009 01:28:51 +0000
Subject: [PATCH] add hotpot_encode_content_links() and
 hotpot_decode_content_links() to HotPot's backuplib.php and restorelib.php
 respectively

---
 mod/hotpot/backuplib.php  | 10 ++++++++++
 mod/hotpot/restorelib.php | 42 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 52 insertions(+)

diff --git a/mod/hotpot/backuplib.php b/mod/hotpot/backuplib.php
index 5bd499706ae..d3d9a8af8b9 100644
--- a/mod/hotpot/backuplib.php
+++ b/mod/hotpot/backuplib.php
@@ -334,4 +334,14 @@
         }
         return $info;
     }
+
+    // Return content encoded to support interactivities linking.
+    // Called by "backup_encode_absolute_links()" in backup/backuplib.php
+    // Content will be decoded by "hotpot_decode_content_links()"
+    function hotpot_encode_content_links ($content, $preferences) {
+        global $CFG;
+        $base = preg_quote("$CFG->wwwroot/mod/hotpot/", '/');
+        $search = "/($base)([a-z]+).php\?([a-z]+)\=([0-9]+)/";
+        return preg_replace($search, '$@HOTPOT*$2*$3*$4@$', $content);
+    }
 ?>
diff --git a/mod/hotpot/restorelib.php b/mod/hotpot/restorelib.php
index 5f3fc394b70..6a1aa8c49be 100644
--- a/mod/hotpot/restorelib.php
+++ b/mod/hotpot/restorelib.php
@@ -484,4 +484,46 @@ function hotpot_restore_logs($restore, $log) {
     } // end switch
     return $status ? $log : false;
 }
+
+function hotpot_decode_content_links($content, $restore) {
+    $search = '/\$@(HOTPOT)\*([a-z]+)\*([a-z]+)\*([0-9]+)@\$/ise';
+    $replace = 'hotpot_decode_content_link("$2", "$3", "$4", $restore)';
+    return preg_replace($search, $replace, $content);
+}
+
+function hotpot_decode_content_link($scriptname, $paramname, $paramvalue, &$restore) {
+    global $CFG;
+
+    $table = '';
+    switch ($paramname) {
+        case 'id':
+            switch ($scriptname) {
+                case 'index':
+                    $table = 'course';
+                    break;
+                case 'report':
+                case 'review':
+                case 'view':
+                    $table = 'course_modules';
+                    break;
+                case 'attempt':
+                    $table = 'hotpot_attempts';
+                    break;
+            }
+            break;
+        case 'hp':
+        case 'hotpotid':
+            $table = 'hotpot';
+            break;
+    }
+
+    $new_id = 0;
+    if ($table) {
+        if ($rec = backup_getid($restore->backup_unique_code, $table, $paramvalue)) {
+            $new_id = $rec->new_id;
+        }
+    }
+
+    return "$CFG->wwwroot/mod/hotpot/$scriptname.php?$paramname=$new_id";
+}
 ?>