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9ff5e44a93
Completely untested by me but it LOOKS like it should work. It's quite standalone, and is basically a single function call during the restore precheck which looks in the backup to see if it's a BB file, then converts it using XSLT. Apart from a little tidyup and renaming, I added a check so that it should just silently fail if XSLT functions aren't available Many thanks to Ziba Scott <ziba@linuxbox.com> who wrote it!
82 lines
2.3 KiB
PHP
82 lines
2.3 KiB
PHP
<?php
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// This file facilitates the conversion of a Blackboard course export
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// into a Moodle course export. It assumes an unzipped directory and makes in-place alterations.
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// Ziba Scott <ziba@linuxbox.com> 10-25-04
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function get_subdirs($directory){
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$opendirectory = opendir( $directory );
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while($filename = readdir($opendirectory)) {
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if (is_dir($directory.$filename) and $filename != ".." and $filename != "."){
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$subdirs[] = $filename;
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}
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}
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closedir($opendirectory);
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return $subdirs;
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}
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function choose_bb_xsl($manifest){
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$f = fopen($manifest,"r");
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$buffer = fgets($f, 400);
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$buffer = fgets($f, 400);
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fclose($f);
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if (strstr($buffer,"xmlns:bb=\"http://www.blackboard.com/content-packaging/\"")){
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return "bb6_to_moodle.xsl";
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}
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return "bb5.5_to_moodle.xsl";
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}
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function blackboard_convert($dir){
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global $CFG;
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if (!function_exists('xslt_create')) { // XSLT MUST be installed for this to work
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return true;
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}
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// Check for a Blackboard manifest file
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if(is_file($dir."/imsmanifest.xml")){
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//Select the proper XSL file
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$xslt_file = choose_bb_xsl($dir."/imsmanifest.xml");
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//TODO: Use the get_string function
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echo "<li>Converting Blackboard export</li>";
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// The XSL file must be in the same directory as the Blackboard files when it is processed
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copy($CFG->dirroot."/backup/bb/$xslt_file", "$dir/$xslt_file");
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$startdir = getcwd();
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chdir($dir);
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// Process the Blackboard XML files with the chosen XSL file.
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// The imsmanifest contains all the XML files and their relationships.
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// The XSL processor will open them as needed.
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$xsltproc = xslt_create();
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if (!xslt_process($xsltproc, "imsmanifest.xml", $xslt_file, "$dir/moodle.xml")) {
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dump("Failed writing xml file");
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chdir($startdir);
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return false;
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}
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// Copy the Blackboard course files into the moodle course_files structure
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$subdirs = get_subdirs($dir."/");
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mkdir("$dir/course_files");
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foreach ($subdirs as $subdir){
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rename($subdir, "course_files/$subdir");
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}
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chdir($startdir);
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// Blackboard export successfully converted
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return true;
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}
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// This is not a Blackboard export
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return true;
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}
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?>
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