HTML Tidy Macro for KomodoEdit

/*
HTML Tidy Macro for Komodo Edit
Pipes tidy output through sed to convert space indentation to tabs (tidy doesn't support tab indentation).
Requires that tidy and sed be installed.
BSD License
*/

komodo.assertMacroVersion(3);
if (komodo.view) { komodo.view.setFocus(); }

var formatter;
var language = komodo.document.language;
switch (language) {
    case 'Perl':
        formatter = 'perltidy -i=2 -pt=2 -l=0';
        break;
    case 'XML':
    case 'XUL':
    case 'XLST':
        formatter = 'tidy -q -xml -i --indent-spaces 4 -w 80';
        break;
    case 'HTML':
        formatter = 'tidy -q -asxhtml -i --indent-spaces 4 -w 120';
        break;
    default:
        alert("I don't know how to tidy " + language);
        return null;
}

formatter += ' | sed \'s/    /\t/g\'';

//save current cursor position
var currentPos = komodo.editor.currentPos;

try {
    // Save the file.  After the operation you can check what changes where made by
    // File -> Show Unsaved Changes
    komodo.doCommand('cmd_save');

    // Group operations into a single undo
    komodo.editor.beginUndoAction();

    // Select entire buffer & pipe it into formatter.
    komodo.doCommand('cmd_selectAll');
    Run_RunEncodedCommand(window, formatter + " {'insertOutput': True, 'operateOnSelection': True}");

    // Restore cursor.  It will be close to the where it started depending on how the text was modified.
    komodo.editor.gotoPos(currentPos);

    // On windows, when the output of a command is inserted into an edit buffer it has unix line ends.
    komodo.doCommand('cmd_cleanLineEndings');
} catch (e) {
    alert(e);
} finally {
    // Must end undo action or may corrupt edit buffer
    komodo.editor.endUndoAction();
}