From 8ed63d4710aea334138141af1690f7d5d10ffdab Mon Sep 17 00:00:00 2001
From: Tim Lock <tim.lock@netspot.com.au>
Date: Tue, 26 Jun 2012 11:43:33 +0930
Subject: [PATCH] MDL-34020: Further work on IMS package importing when using
 Blackboard packages

---
 mod/imscp/backup/moodle1/lib.php |  6 +++---
 mod/imscp/locallib.php           | 44 ++++++++++++++++++++++++++++++++++++++--
 2 files changed, 45 insertions(+), 5 deletions(-)

diff --git a/mod/imscp/backup/moodle1/lib.php b/mod/imscp/backup/moodle1/lib.php
index 1977312e42b..2a74c31c1bb 100644
--- a/mod/imscp/backup/moodle1/lib.php
+++ b/mod/imscp/backup/moodle1/lib.php
@@ -83,7 +83,7 @@ class moodle1_mod_imscp_handler extends moodle1_resource_successor_handler {
         $this->fileman->migrate_directory('moddata/resource/'.$data['id']);
 
         // parse manifest
-        $structure = $this->parse_structure($this->converter->get_tempdir_path().'/moddata/resource/'.$data['id'].'/imsmanifest.xml');
+        $structure = $this->parse_structure($this->converter->get_tempdir_path().'/moddata/resource/'.$data['id'].'/imsmanifest.xml', $imscp, $contextid);
         $imscp['structure'] = is_array($structure) ? serialize($structure) : null;
 
         // write imscp.xml
@@ -113,7 +113,7 @@ class moodle1_mod_imscp_handler extends moodle1_resource_successor_handler {
      *
      * @param string $manifestfilepath the full path to the manifest file to parse
      */
-    protected function parse_structure($manifestfilepath) {
+    protected function parse_structure($manifestfilepath, $imscp, $context) {
         global $CFG;
 
         if (!file_exists($manifestfilepath)) {
@@ -127,6 +127,6 @@ class moodle1_mod_imscp_handler extends moodle1_resource_successor_handler {
         }
 
         require_once($CFG->dirroot.'/mod/imscp/locallib.php');
-        return imscp_parse_manifestfile($manifestfilecontents);
+        return imscp_parse_manifestfile($manifestfilecontents, $imscp, $context);
     }
 }
diff --git a/mod/imscp/locallib.php b/mod/imscp/locallib.php
index d51ecf7a690..b3dbafbf9a8 100644
--- a/mod/imscp/locallib.php
+++ b/mod/imscp/locallib.php
@@ -95,7 +95,7 @@ function imscp_parse_structure($imscp, $context) {
         return null;
     }
 
-    return imscp_parse_manifestfile($manifestfile->get_content());
+    return imscp_parse_manifestfile($manifestfile->get_content(), $imscp, $context);
 }
 
 /**
@@ -103,7 +103,7 @@ function imscp_parse_structure($imscp, $context) {
  * @param string $manifestfilecontents the contents of the manifest file
  * @return array
  */
-function imscp_parse_manifestfile($manifestfilecontents) {
+function imscp_parse_manifestfile($manifestfilecontents, $imscp, $context) {
     $doc = new DOMDocument();
     if (!$doc->loadXML($manifestfilecontents, LIBXML_NONET)) {
         return null;
@@ -162,6 +162,9 @@ function imscp_parse_manifestfile($manifestfilecontents) {
             foreach ($fileresources as $file) {
                 $href = $file->getAttribute('href');
             }
+            if (pathinfo($href, PATHINFO_EXTENSION) == 'xml') {
+                $href = imscp_recursive_href($href, $imscp, $context);
+            }
             if (empty($href)) {
                 continue;
             }
@@ -189,6 +192,43 @@ function imscp_parse_manifestfile($manifestfilecontents) {
     return $items;
 }
 
+function imscp_recursive_href($manifestfilename, $imscp, $context) {
+    $fs = get_file_storage();
+
+    $dirname = dirname($manifestfilename);
+    $filename = basename($manifestfilename);
+
+    if ($dirname !== '/') {
+        $dirname = "/$dirname/";
+    }
+
+    if (!$manifestfile = $fs->get_file($context->id, 'mod_imscp', 'content', $imscp->revision, $dirname, $filename)) {
+        return null;
+    }
+    $doc = new DOMDocument();
+    if (!$doc->loadXML($manifestfile->get_content(), LIBXML_NONET)) {
+        return null;
+    }
+    $xmlresources = $doc->getElementsByTagName('resource');
+    foreach ($xmlresources as $res) {
+        if (!$href = $res->attributes->getNamedItem('href')) {
+            $fileresources = $res->getElementsByTagName('file');
+            foreach ($fileresources as $file) {
+                $href = $file->getAttribute('href');
+                if (pathinfo($href, PATHINFO_EXTENSION) == 'xml') {
+                    $href = imscp_recursive_href($href, $imscp, $context);
+                }
+
+                if (pathinfo($href, PATHINFO_EXTENSION) == 'htm' || pathinfo($href, PATHINFO_EXTENSION) == 'html') {
+                    return $href;
+                }
+            }
+        }
+    }
+
+    return $href;
+}
+
 function imscp_recursive_item($xmlitem, $level, $resources) {
     $identifierref = '';
     if ($identifierref = $xmlitem->attributes->getNamedItem('identifierref')) {
-- 
2.11.4.GIT