zibas
22d2a0fdc4
Also altered the bb5.5 importer: Respecting certain "visible" flags. Made the default course properties match the importer capabilities better. Fixed the resource summaries. Converting Bb "Staff Information."
91 lines
2.7 KiB
PHP
91 lines
2.7 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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require_once('xsl_emulate_xslt.inc');
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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 $CFG;
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// Check for a Blackboard manifest file
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if (is_readable($dir.'/imsmanifest.xml')){
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if (!function_exists('xslt_create')) { // XSLT MUST be installed for this to work
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notify('You need the XSLT library installed in PHP to open this Blackboard file');
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return false;
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}
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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 for this
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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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if (!copy($CFG->dirroot."/backup/bb/$xslt_file", "$dir/$xslt_file")) {
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notify('Could not copy the XSLT file to '."$dir/$xslt_file");
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return false;
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}
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// Change to that directory
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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', "$dir/$xslt_file", "$dir/moodle.xml")) {
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notify('Failed writing xml file');
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chdir($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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