ewiki.php

很棒的在线教学系统

      $data = array(
         "version" => &$_REQUEST["version"],
         "content" => &$_REQUEST["content"]
      );
   }
   else {
      if (empty($data["version"])) {
         $data["version"] = 1;
      }
      @$data["content"] .= "";
   }

   #-- normalize to DOS newlines
   $data["content"] = str_replace("\015\012", "\012", $data["content"]);
   $data["content"] = str_replace("\015", "\012", $data["content"]);
   $data["content"] = str_replace("\012", "\015\012", $data["content"]);

   $hidden_postdata["version"] = &$data["version"];

   #-- edit textarea/form
   // deleted name="ewiki", can not find the reference, and it's breaking xhtml
   $o .= ewiki_t("EDIT_FORM_1")
       . '<form method="post" enctype="multipart/form-data" action="'
       . ewiki_script("edit", $id) . '" '
       . ' accept-charset="'.EWIKI_CHARSET.'">' . "\n";
   $o .= '<div>';
   #-- additional POST vars
   foreach ($hidden_postdata as $name => $value) {
       $o .= '<input type="hidden" name="'.$name.'" value="'.$value.'" />'."\n";
   }

   ($cols = strtok($ewiki_config["edit_box_size"], "x*/,;:")) && ($rows = strtok("x, ")) || ($cols=70) && ($rows=15);
   global $ewiki_use_editor, $ewiki_editor_content;
   $ewiki_editor_content=1;
   if($ewiki_use_editor) {
     ob_start();
     $usehtmleditor = can_use_html_editor();
     echo '<table><tr><td>';
     if ($usehtmleditor) { //clean and convert before editing
         $options = new object();
         $options->smiley = false;
         $options->filter = false;
         $oldtext = format_text(ewiki_format($data["content"]), $moodle_format, $options);
     } else {
         $oldtext = ewiki_format($data["content"]);
     }
     print_textarea($usehtmleditor, $rows, $cols, 680, 400, "content", $oldtext);
     echo '</td></tr></table>';

     if ($usehtmleditor) {
        use_html_editor("content");
     }
     $o .= ob_get_contents();     
     ob_end_clean();     

   } else {
   ##### END MOODLE ADDITION #####

     $o .= '<textarea wrap="soft" id="ewiki_content" name="content" rows="'.$rows.'" cols="'.$cols.'">'
        . s($data["content"]) . "</textarea>"
        . $GLOBALS["ewiki_t"]["C"]["EDIT_TEXTAREA_RESIZE_JS"];

   ##### BEGIN MOODLE ADDITION #####
   }
   ##### END MOODLE ADDITION #####
   
   #-- more <input> elements before the submit button
   if ($pf_a = $ewiki_plugins["edit_form_insert"]) foreach ($pf_a as $pf) {
      $o .= $pf($id, $data, $action);
   }

   ##### BEGIN MOODLE ADDITION (Cancel Editing into Button) #####
   $o .= "\n<br />\n"
      . '<input type="submit" name="save" value="'. ewiki_t("SAVE") . '" />'."\n"
      . '<input type="submit" name="preview" value="'. ewiki_t("PREVIEW") . '" />' . "\n"
      . '<input type="submit" name="canceledit" value="'. ewiki_t("CANCEL_EDIT") . '" />' . "\n";
#      . ' &nbsp; <a href="'. ewiki_script("", $id) . '">' . ewiki_t("CANCEL_EDIT") . '</a>';
   ##### END MOODLE ADDITION #####

   #-- additional form elements
   if ($pf_a = $ewiki_plugins["edit_form_append"]) foreach ($pf_a as $pf) {
      $o .= $pf($id, $data, $action);
   }

   $o .= "\n</div></form>\n";
   //   . ewiki_t("EDIT_FORM_2");  // MOODLE DELETION

   return('<div class="edit-box">'. $o .'</div>');
}



#-- pic upload form
function ewiki_page_edit_form_final_imgupload(&$o, &$id, &$data, &$action) {
   if (EWIKI_SCRIPT_BINARY && EWIKI_UP_UPLOAD && EWIKI_IMAGE_MAXSIZE) {
      $o .= "\n<br />\n". '<div class="image-upload">'
      . '<form action='
      . '"'. ewiki_script_binary("", EWIKI_IDF_INTERNAL, "", "_UPLOAD=1") .'"'
      . ' method="post" enctype="multipart/form-data" target="_upload">'
      . '<fieldset class="invisiblefieldset">'
      . '<input type="hidden" name="MAX_FILE_SIZE" value="'.EWIKI_IMAGE_MAXSIZE.'" />'
      . '<input type="file" name="'.EWIKI_UP_UPLOAD.'"'
      . (defined("EWIKI_IMAGE_ACCEPT") ? ' accept="'.EWIKI_IMAGE_ACCEPT.'" />' : " />")
      . '<input type="hidden" name="'.EWIKI_UP_BINARY.'" value="'.EWIKI_IDF_INTERNAL.'" />'
      . '&nbsp;&nbsp;&nbsp;'
      . '<input type="submit" value="'.ewiki_t("UPLOAD_PICTURE_BUTTON").'" />'
      . '</fieldset></form></div>'. "\n";
  }
}


function ewiki_page_edit_preview(&$data) {
#### BEGIN MOODLE CHANGES   
   global $moodle_format;   
   $preview_text=$GLOBALS["ewiki_plugins"]["render"][0]($_REQUEST["content"], 1, EWIKI_ALLOW_HTML || (@$data["flags"]&EWIKI_DB_F_HTML));
   return( '<div class="preview">'
           . "<hr noshade>"
           . "<div class='mdl-right'>" . ewiki_t("PREVIEW") . "</div><hr noshade><br />\n"
           . format_text($preview_text, $moodle_format)
           . "<br /><br /><hr noshade><br />"
           . "</div>"
   );
#### END MOODLE CHANGES   
}


function ewiki_control_links($id, &$data, $action) {

   global $ewiki_plugins, $ewiki_ring, $ewiki_config;
   $action_links = & $ewiki_config["action_links"][$action];

   #-- disabled
   if (!$ewiki_config["control_line"]) {
      return("");
   }

   $o = "\n"
      . '<div class="mdl-right action-links control-links">'
      . "\n<br />\n"
      . "<hr noshade>" . "\n";

   if (@$data["forced_version"]) {

      $o .= '<form action="' . ewiki_script("edit", $id) . '" method="post">' .
            '<fieldset class="invisiblefieldset">'.
            '<input type="hidden" name="edit" value="old" />' .
            '<input type="hidden" name="version" value="'.$data["forced_version"].'" />' .
            '<input type="submit" value="' . ewiki_t("OLDVERCOMEBACK") . '" /></form> ';
   }
   else {
      foreach ($action_links as $action => $title)
      if (!empty($ewiki_plugins["action"][$action]) || !empty($ewiki_plugins["action_always"][$action]) || strpos($action, ":/"))
      {
         if (EWIKI_PROTECTED_MODE && EWIKI_PROTECTED_MODE_HIDING && !ewiki_auth($id, $data, $action))  { continue; }

         $o .= '<a href="'
            . (strpos($action, ":/") ? $action : ewiki_script($action, $id))
            . '">' . ewiki_t($title) . '</a> &middot; ';
      }
   }

   if ($data["lastmodified"] >= UNIX_MILLENNIUM) { 
      $o .= '<small>' . strftime(ewiki_t("LASTCHANGED"), @$data["lastmodified"]) . '</small>';
   }

   $o .= "</div>\n";

   return($o);
}





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/*
   The _format() function transforms $wiki_source pages into <html> strings,
   also calls various markup and helper plugins during the transformation
   process. The $params array can activate various features and extensions.
   only accepts UNIX newlines!
*/
function ewiki_format (
            $wiki_source,
            $params = array()
         )
{
   global $ewiki_links, $ewiki_plugins, $ewiki_config;

   #-- state vars
   $params = @array_merge($ewiki_config["format_params"], $params);
   $s = array(
      "in" => 0,         # current input $iii[] block array index
      "para" => "",
      "line" => "",
      "post" => "",      # string to append after current line/paragraph
      "line_i" => 0,
      "lines" => array(),
      "list" => "",      # lists
      "tbl" => 0,        # open table?
      "indent" => 0,     # indentation
      "close" => array(),
   );
   #-- aliases
   $in = &$s["in"]; 
   $line = &$s["line"];
   $lines = &$s["lines"];
   $para = &$s["para"];
   $post = &$s["post"];
   $list = &$s["list"];

   #-- input and output arrays
   if ($wiki_source[0] == "<") {            # also prepend an empty line 
      $wiki_source = "\n" . $wiki_source;    # for faster strpos() searchs
   }
   $iii = array(
      0 => array(
         0 => $wiki_source."\n",    # body + empty line
         1 => 0x0FFF,               # flags (0x1=WikiMarkup, 0x2=WikiLinks, 0x100=BlockPlugins)
         2 => "core",               # block plugin name
      )
   );
   $ooo = array(
   );
   unset($wiki_source);

   #-- plugins
   $pf_tbl = @$ewiki_plugins["format_table"][0];
   $pf_line = @$ewiki_plugins["format_line"];

   #-- wikimarkup (wm)
   $htmlentities = $ewiki_config["htmlentities"];
   $wm_indent = &$ewiki_config["wm_indent"];
   $wm_table_defaults = &$ewiki_config["wm_table_defaults"];
   $wm_source = &$ewiki_config["wm_source"];
   $wm_list = &$ewiki_config["wm_list"];
   $wm_list_chars = implode("", array_keys($wm_list));
   $wm_style = &$ewiki_config["wm_style"];
   $wm_start_end = &$ewiki_config["wm_start_end"];

   #-- eleminate html
   $iii[0][0] = strtr($iii[0][0], $htmlentities);
   unset($htmlentities["&"]);

   #-- pre-processing plugins (working on wiki source)
   if ($pf_source = $ewiki_plugins["format_source"]) {
      foreach ($pf_source as $pf) $pf($iii[0][0]);
   }

   #-- simple markup
   $iii[0][0] = strtr($iii[0][0], $wm_source);

   #-- separate input into blocks ------------------------------------------
   foreach ($ewiki_config["format_block"] as $btype => $binfo) {

      #-- disabled block plugin?
      if ($binfo[2] && !$params[$binfo[2]])  {
         continue;
      }

      #-- traverse $iii[]
      $in = -1;
      while ((++$in) < count($iii)) {

         #-- search fragment delimeters
         if ($iii[$in][1] & 0x0100)
         while (
            ($c = & $iii[$in][0]) &&
            (($l = strpos($c, $binfo[0])) !== false) &&
            ($r = strpos($c, $binfo[1], $l))   )
         {
            $l_len = strlen($binfo[0]);
            $r_len = strlen($binfo[1]);

            $repl = array();
            // pre-text
            if (($l > 0) && trim($text = substr($c, 0, $l))) {
               $repl[] = array($text, 0xFFFF, "core");
            }
            // the extracted part
            if (trim($text = substr($c, $l+$l_len, $r-$l-$r_len))) {
               $repl[] = array($text, $binfo[3], "$btype");
            }
            // rest
            if (($r+$r_len < strlen($c)) && trim($text = substr($c, $r+$r_len))) {
               $repl[] = array($text, 0xFFFF, "core");
            }
            array_splice($iii, $in, 1, $repl);

            $in += 1;
         }
      }
   }

   #-- run format_block plugins
   $in = -1;
   while ((++$in) < count($iii)) {
      if (($btype = $iii[$in][2]) && ($pf_a = $ewiki_plugins["format_block"][$btype])) {
         $c = &$iii[$in][0];
         foreach ($pf_a as $pf) {   
            # current buffer $c and pointer $in into $iii[] and state $s
            $pf($c, $in, $iii, $s, $btype);
         }
      }
   }

   #-- wiki markup ------------------------------------------------------
   $para = "";
   $in = -1;   
   while ((++$in) < count($iii)) {
      #-- wikimarkup
      if ($iii[$in][1] & 0x0001) {

         #-- input $lines buffer, and output buffer $ooo array
         $lines = explode("\n", $iii[$in][0]);
         $ooo[$in] = array(
            0 => "",
            1 => $iii[$in][1]
         );
         $out = &$ooo[$in][0];
         $s["block"] = ($iii[$in][2] != "core");  # disables indentation & paragraphs

         #-- walk through wiki source lines
         $line_max = count($lines);
         foreach ($lines as $s["line_i"]=>$line) {
//echo "<pre>line={$s[line_i]}:".htmlspecialchars($line).":".htmlspecialchars($line[0])."</pre>";

            #-- empty lines separate paragraphs
            if (!strlen($line)) {
               ewiki_format_close_para($ooo, $s);
               ewiki_format_close_tags($ooo, $s);
               if (!$s["block"]) {
                  $out .= "\n";
               }
            }
            #-- horiz bar
            if (!strncmp($line, "----", 4)) {
               $out .= "<hr noshade>\n";
               continue;
            }
            #-- html comment
            #if (!strncmp($line, "&lt;!--", 7)) {
            #   $out .= "<!-- " . htmlentities(str_replace("--", "__", substr($line, 7))) . " -->\n";
            #   continue;
            #}

            ($c0 = $line[0])
            or ($c0 = "\000");

            #-- tables
            ### MOODLE CHANGE: TRIM
            if (($c0 == "|") && ($line[strlen(trim($line))-1] == "|")) {
               if (!$s["tbl"]) {
                  ewiki_format_close_para($ooo, $s);
                  ewiki_format_close_tags($ooo, $s);
                  $s["list"] = "";
               }
               $line = substr($line, 1, -1);
               if ($pf_tbl) { 
                  $pf_tbl($line, $ooo, $s);
               }
               else {
                  if (!$s["tbl"]) {