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- (*******************************************************************
- Procedure to abort process in case of error; with message.
- *******************************************************************)
- procedure Abort ( S : string ) ;
- begin
- writeln ( 'Message : ' , S , #7#7#7 ) ;
- Halt ( 1 ) ;
- end ;
- (*******************************************************************
- Convert string to upper case.
- *******************************************************************)
- function Upper ( S : string ) : string ;
- var
- temp : string ;
- B : byte ;
- begin
- temp := S ;
- for B := 1 to length ( S ) do
- temp [ B ] := UpCase ( temp [ B ] ) ;
- Upper := temp ;
- end ;
- (*******************************************************************
- Returns a byte for the drive letter, where 1 thru 26 = A: thru Z:
- *******************************************************************)
- function DriveNum ( S : string ) : byte ;
- begin
- DriveNum := 0 ;
- if pos ( ':' , S ) <> 2 then EXIT ;
- DriveNum := ord ( UpCase ( S [ 1 ] ) ) - 64 ;
- end ;
- (*******************************************************************
- Check that this program is an EXE file AND is on drive A:
- *******************************************************************)
- function IsDriveA ( S : string ) : boolean ;
- begin
- IsDriveA := DriveNum ( S ) = 1 ;
- end ;
-