/******************************************************************************/
/* Macro    : ActiveCompare                                                   */
/* Function : Compare the currently edited file with the last saved content   */
/* Auther   : Takahiro Kawakami                                               */
/* Note     : The last saved file is to be opened as a read-only file.        */
/*            If you want to edit it, delete the line "doc.ReadOnly = true;". */
/******************************************************************************/
var strOrigFilePath;
var strNowFilePath;
var strFileName;
var strFileExt;
var strSuffix = "_LastSaved.";
var msg1 = "Temporary file cannot be compared.";
var msg2 = "To compare, save it first.";

if(!document.Untitled){

	if( document.FullName !== '' ){

		document.Activate();
		fso = new ActiveXObject( "Scripting.FileSystemObject" );

		strFileName    =document.Name.split(".")[0];
		strFileExt     =document.Name.split(".")[1];
		strNowFilePath =document.FullName;
		strOrigFilePath=fso.GetSpecialFolder(2) + "\\" + strFileName + strSuffix + strFileExt;

		if( strNowFilePath.indexOf(fso.GetSpecialFolder(2) + "\\" )==0 ){

			Window.alert(msg1);

		} else {

			// copy saved file to %temp%
			fso.CopyFile( strNowFilePath, strOrigFilePath);

			// close if original file in %temp% is opened
			docs = new Enumerator( editor.Documents );

			for( ; !docs.atEnd(); docs.moveNext() ){

			   doc = docs.item();

				if( doc.FullName == strOrigFilePath ){

					doc.Activate();
					doc.Saved=true;
					doc.close();
					break;

				}

			}

			editor.OpenFile( strOrigFilePath, 0, eeOpenAllowNewWindow );
			doc = editor.Documents.item(editor.Documents.Count);
			doc.Activate();
			doc.ReadOnly = true;
			editor.ExecuteCommandByID(4492);

		}

	}

} else {

	Window.alert(msg2);

}