moodle_wikidump.php

很棒的在线教学系统

    #} elseif ($arctype == "TAR") {
    #  $archivename=EWIKI_WIKIDUMP_ARCNAME."$rootid.tar";
    #  $archive = new ewiki_virtual_tarball();
    #} else {
    #  die();
    #}
    
    /// Create/Set Directory
    $wname=clean_filename(strip_tags(format_string($wiki->name,true)));
    if($exportdestinations) {
      if(wiki_is_teacher($wiki)) {
        $exportdir=$CFG->dataroot."/".$course->id."/".$exportdestinations;
      } else {
        add_to_log($course->id, "wiki", "hack", "", format_string($wiki->name,true).": Tried to export a wiki as non-teacher into $exportdestinations.");
        error("You are not a teacher !");
      }
    } else {
        $exportbasedir=tempnam("/tmp","WIKIEXPORT");
        @unlink($exportbasedir);
        @mkdir($exportbasedir);
        /// maybe we need to check the name here...?
        $exportdir=$exportbasedir."/".$wname;
        @mkdir($exportdir);
        if(!is_dir($exportdir)) {
            error("Cannot create temporary directory $exportdir !");
        }
    }
    
    $a_pagelist = array_unique($a_pagelist);
    
    
    #-- convert all pages
    foreach($a_pagelist as $pagename){      
      if ((!in_array($pagename, $a_virtual))) {
        $id = $pagename;
        #-- not a virtual page
        $row = ewiki_database("GET", array("id"=>$pagename));
        $content = "";
      } elseif($withvirtualpages) {
        $id = $pagename;
        #-- is a virtual page
        $pf = $ewiki_plugins["page"][$id];
        $content = $pf($id, $content, "view");
        if ($exportformats==1) {
          $content = str_replace('$content', $content, str_replace('$title', $id, $HTML_TEMPLATE));
        }
        $fn = urlencode($id);
        $fn = preg_replace(EWIKI_DUMP_FILENAME_REGEX, "", $fn);
        $fn = $fn.$html_ext;
      } else {
        continue;
      }
      
      if (empty($content)){
        switch ($row["flags"] & EWIKI_DB_F_TYPE) {
          // Text Page
          case (EWIKI_DB_F_TEXT):
            #print "<pre>"; print_r($row[content]); print "\n-------------</pre>";
            
            if($exportformats==1) {/// HTML-Export
              $content = ewiki_format($row["content"]);
            } else {
              $content = $row["content"];
            }
            
            # Binary files link adjustment when html
            if($exportformats==1) {
              $content = str_replace($a_images, $a_rimages, $content);
            }
            
            $fn = preg_replace(EWIKI_DUMP_FILENAME_REGEX, "",  urlencode($id));
            $fn = $fn.$html_ext;
            if($exportformats==1) {/// HTML-Export
              $content =  str_replace('$content', $content, str_replace('$title', $id, $HTML_TEMPLATE));
            }
            break;
          case (EWIKI_DB_F_BINARY):            
            #print "Binary: $row[id]<br />";
            if (($row["meta"]["class"]=="image" || $row["meta"]["class"]=="file") && ($exportbinaries)) {
              # Copy files to the appropriate directory              
              $fn= moodle_binary_get_path($id, $row["meta"], $course, $wiki, $userid, $groupid);
              $destfn=clean_filename(substr($id,strlen(EWIKI_IDF_INTERNAL)));
              $dest="$exportdir/".$destfn;
              if(!copy($fn,$dest)) {
                notify("Cannot copy $fn to $dest.");
              }
                          
              #$fn = urlencode(preg_replace(EWIKI_DUMP_FILENAME_REGEX, "", $id));
              #$content = &$row["content"];
              $filestozip[]=$exportdir."/".$destfn;
              continue (2);
            }
            else {
              #-- php considers switch statements as loops so continue 2 is needed to 
              #-- hit the end of the for loop 
              continue(2);
            }
            break;
          
          default:
            # don't want it
            continue(2);
        }
      }
  
      # Do not translate links when wiki already in pure html - mode
      if($wiki->htmlmode!=2) {
          $content=preg_replace_callback(
            '/(<a href=")(.*?)(\.html">)/',
            create_function(
            // single quotes are essential here,
            // or alternative escape all $ as \$
            '$matches',
            'return($matches[1].preg_replace(EWIKI_DUMP_FILENAME_REGEX,"",$matches[2]).$matches[3]);'
            ),
            $content
            );
      }
      #-- add file
      // Let's make sure the file exists and is writable first.
      if (!$handle = fopen($exportdir."/".$fn, 'w')) {
        error("Cannot open file ($exportdir/$fn)");
      }
      
      // Write $content to our opened file.
      if (fwrite($handle, $content) === FALSE) {
        error("Cannot write to file ($exportdir/$fn)");
      }

      fclose($handle);
      $filestozip[]=$exportdir."/".$fn;
      #$archive->add($content, $fn, array(
      #  "mtime" => $row["lastmodified"],
      #  "uname" => "ewiki",
      #  "mode" => 0664 | (($row["flags"]&EWIKI_DB_F_WRITEABLE)?0002:0000),
      #  ), $complevel);
    }
    
    #-- create index page
    /// HTML-Export
    if($exportformats==1) {
        $timer=array();
        $level=-1;
        $fordump=1;
        $str_formatted="<ul>\n<li><a href=\"".($wiki_entry->pagename).$html_ext."\">".($wiki_entry->pagename)."</a></li>";
        $fin_level=format_sitemap($a_sitemap, ($wiki_entry->pagename), $str_formatted, $level, $timer, $fordump);
        $str_formatted.="</ul>".str_pad("", $fin_level*6, "</ul>\n");
        $str_formatted=preg_replace_callback(
            '/(<a href=")(.*?)(\.html">)/',
            create_function(
              // single quotes are essential here,
              // or alternative escape all $ as \$
              '$matches',
              'return($matches[1].preg_replace(EWIKI_DUMP_FILENAME_REGEX,"",$matches[2]).$matches[3]);'
            ),
            $str_formatted
          );
        $str_formatted = str_replace('$content', $str_formatted, str_replace('$title', get_string("index","wiki"), $HTML_TEMPLATE));
        #-- add file
        // Let's make sure the file exists and is writable first.
        $indexname="index".$html_ext;
        if (!$handle = fopen($exportdir."/".$indexname, 'w')) {
          error("Cannot open file ($exportdir/$indexname)");
        }
        
        // Write $somecontent to our opened file.
        if (fwrite($handle, $str_formatted) === FALSE) {
          error("Cannot write to file ($exportdir/$indexname)");
        }
  
        fclose($handle);
        $filestozip[]=$exportdir."/".$indexname;
  
    #-- add index page
#    $archive->add($str_formatted, "Index_$rootid".$html_ext, array(
#      "mtime" => $row["lastmodified"],
#      "uname" => "ewiki",
#      "mode" => 0664 | (($row["flags"]&EWIKI_DB_F_WRITEABLE)?0002:0000),
#      ), $complevel);
    }     
        
    if(!$exportdestinations) {
      $archivename=$wname.".zip";
      zip_files($filestozip, "$exportbasedir/$archivename");

      #-- Headers
      Header("Content-type: application/zip");
      Header("Content-disposition: attachment; filename=\"$archivename\"");
      Header("Cache-control: private");
      Header("Original-Filename: $archivename");    
      Header("X-Content-Type: application/zip");
      Header("Content-Location: $archivename");      
      if(!@readfile("$exportbasedir/$archivename")) {
        error("Cannot read $exportbasedir/$archivename");
      }
      if(!deldir($exportbasedir)) {
        error("Cannot delete $exportbasedir");
      }
      #exit();
      return false;
    } else {
       return get_string("exportsuccessful","wiki")."<br />";      
    }
  }
}

function deldir($dir)
{
  $handle = opendir($dir);
  while (false!==($FolderOrFile = readdir($handle)))
  {
     if($FolderOrFile != "." && $FolderOrFile != "..")
     { 
       if(is_dir("$dir/$FolderOrFile"))
       { deldir("$dir/$FolderOrFile"); }  // recursive
       else
       { unlink("$dir/$FolderOrFile"); }
     } 
  }
  closedir($handle);
  if(rmdir($dir))
  { $success = true; }
  return $success; 
}
?>