Dos Command Strings Parse.bat

@ECHO off
REM ===================================================================
REM
REM PARSE.BAT - A batch file that parses a filename.
REM
REM Entry: %1 is the filename entered by the user
REM %2 is the default filename extension desired.
REM
REM Exit: %FNAME% contains the parsed filename
REM
REM ===================================================================
SET fname=%1
SET fext=%2
IF .%1==. STRINGS fname = ASK Please enter the name of the file
STRINGS fname = FILENAME %fname%
IF .%2==. STRINGS fext = ASK Please enter the extension of the file
STRINGS fname = FILENAME %FNAME%
SET fname=%FNAME%.%FEXT%
IF EXIST %FNAME% GOTO END
ECHO The filename %FNAME% does not exist.
SET fname=
GOTO end
:END
SET fext=

.