Code: Select all

if (UltraEdit.document.length > 0)  // Is any file opened?
{
   // Define environment for this script.
   UltraEdit.insertMode();
   if (typeof(UltraEdit.columnModeOff) == "function") UltraEdit.columnModeOff();
   else if (typeof(UltraEdit.activeDocument.columnModeOff) == "function") UltraEdit.activeDocument.columnModeOff();

   // Is there nothing selected in active file?
   if (!UltraEdit.activeDocument.isSel())
   {
      // Select the current line.
      UltraEdit.activeDocument.selectLine();
   }
   if (UltraEdit.activeDocument.isSel())
   {
      // It is necessary that entire lines are selected for correct comment add/remove.
      // But the user can start a selection anywhere inside a line and end it also
      // anywhere inside a line. For that reason lots of extra code is necessary to
      // more or less expand the selection of the user to beginning of first selected
      // line and end of last selected line with including the line termination of last
      // selected line. Further there must be taken into account that the selection ends
      // at end of the file and there is no line termination at end of the active file.

      // Load the selected block as string into memory of script.
      var sBlock = UltraEdit.activeDocument.selection;
      // Delete the selection.
      UltraEdit.activeDocument.deleteText();

      // Is the caret now not at column 1?
      if (UltraEdit.activeDocument.isColNumGt(1))
      {
          // The selection started somewhere in the middle of a line and for that
          // reason the string from current caret position to beginning of the line
          // must be also loaded from file and prepended to the already loaded block.
          UltraEdit.activeDocument.gotoLineSelect(0,1);
          sBlock = UltraEdit.activeDocument.selection + sBlock;
          UltraEdit.activeDocument.deleteText();
      }

      // Determine the line termination type from selected block.
      var sLineTerm = sBlock.replace(/^[^\r\n]*(\r?\n|\r)[\s\S]*$/,"$1");

      // Is there no carriage return + line-feed or just line-feed
      // or just carriage return in the loaded block?
      if (sLineTerm == sBlock)
      {
         // The user selected most likely just a part within a line. So select
         // the rest of the line and append it to the already loaded block.
         UltraEdit.activeDocument.gotoLine(0,1);
         UltraEdit.activeDocument.selectLine();
         if (UltraEdit.activeDocument.isSel())
         {
            sBlock += UltraEdit.activeDocument.selection;
            UltraEdit.activeDocument.deleteText();
            sLineTerm = sBlock.replace(/^[^\r\n]*(\r?\n|\r)[\s\S]*$/,"$1");
         }
         if (sLineTerm == sBlock) sLineTerm = "";
      }

      var asLines = [];
      // Is the line termination already determined?
      if (sLineTerm.length)
      {
         // Does the selected block not end with a line termination?
         if (sBlock.substr(sBlock.length - sLineTerm.length) != sLineTerm)
         {
            // The user selected a block spanning over multiple lines, but
            // the last selected line was not completely selected or the
            // selection ends at end of file with no line termination.
            // Select the rest of last selected line and append it to
            // already loaded block with deletion from the active file.
            UltraEdit.activeDocument.gotoLine(0,1);
            UltraEdit.activeDocument.selectLine();
            if (UltraEdit.activeDocument.isSel())
            {
               sBlock += UltraEdit.activeDocument.selection;
               UltraEdit.activeDocument.deleteText();
            }
         }
         // Split up the loaded block into an array of lines.
         asLines = sBlock.split(sLineTerm);
      }
      else asLines.push(sBlock);

      var nFirstCharPos;
      var nLineIndex;
      var rReplaceRegExp;
      var sReplaceString;

      // Find out if the non-blank line has a line comment at the beginning
      // after 0 or more spaces/tabs in which case a comment remove is
      // applied on all lines of the selection, otherwise a comment add.
      for (nLineIndex = 0; nLineIndex < asLines.length; nLineIndex++)
      {
         if (!asLines[nLineIndex].length) continue;   // Ignore empty lines.

         nFirstCharPos = asLines[nLineIndex].search(/[^\t ]/);
         if (nFirstCharPos < 0)  // Does the line contain only sapces/tabs?
         {
//            asLines[nLineIndex] = "";  // Trim lines containing only spaces/tabs.
            continue;   // Ignore lines containing only spaces/tabs.
         }

         // Get the first two characters of the line after 0 or more spaces/tabs.
         var sFirstTwoChars = asLines[nLineIndex].substr(nFirstCharPos,2);
         if (sFirstTwoChars == "--")
         {
            rReplaceRegExp = /^([\t ]*)(?:-- ?)?/;
            sReplaceString = "$1";
            UltraEdit.outputWindow.write("comment remove");
         }
         else
         {
            rReplaceRegExp = /^([\t ]*)/;
            sReplaceString = "$1-- ";
            UltraEdit.outputWindow.write("comment add");
         }
         break;
      }

      // Do the comment add/remove on all remaining non-blank lines.
      for (; nLineIndex < asLines.length; nLineIndex++)
      {
         if (!asLines[nLineIndex].length) continue;   // Ignore empty lines.

         nFirstCharPos = asLines[nLineIndex].search(/[^\t ]/);
         if (nFirstCharPos < 0)  // Does the line contain only sapces/tabs?
         {
//            asLines[nLineIndex] = "";  // Trim lines containing only spaces/tabs.
            continue;   // Ignore lines containing only spaces/tabs.
         }
         // Add/remove comment from all non-blank lines.
         asLines[nLineIndex] = asLines[nLineIndex].replace(rReplaceRegExp,sReplaceString);
      }

      // Join the lines back to a single string and write it to the file.
      UltraEdit.activeDocument.write(asLines.join(sLineTerm));

      // Reselect the processed block.
      var nLineNumber = UltraEdit.activeDocument.currentLineNum;
      nLineNumber -= asLines.length - 1;
      if (asLines[asLines.length-1].length) UltraEdit.activeDocument.bottom();
      UltraEdit.activeDocument.gotoLineSelect(nLineNumber,1);
   }
}