' PRNTCLR(0.0)  Print Colored Text to Screen           09/25/1992-07/08/2005
' --------------------------------------------------------------------------
' Copyright (C) 1992-2005 by Vladimir Veytsel                  www.davar.net

' Type ---------------------------------------------------------------------

'    Routine

' Declaration --------------------------------------------------------------

'    DECLARE SUB PRNTCLR(Text$)

' Parameter ----------------------------------------------------------------

'    Text$  - Text to be printed starting at current screen position that may
'             contain color switching codes in the form of "%<code>%".

'             Color           Code  Sample Usage
'             --------------  ----  -------------
'             Bright Red       R    Error message
'             Bright Green     G    Title, info or disk name/letter
'             Bright Yellow    Y    Command name or text accent
'             Bright Blue      B    Status message
'             Bright Magenta   M    Error message highlight
'             Bright Cyan      C    Key, status msg h/l or complex message
'             Bright White     W    Request or text highlight
'             Gray:            D    DOS regular text

'             Corresponding PowerBASIC color switching operators:

'             COLOR 12,0  ' Bright Red     on Black
'             COLOR 10,0  ' Bright Green   on Black
'             COLOR 14,0  ' Bright Yellow  on Black
'             COLOR  9,0  ' Bright Blue    on Black
'             COLOR 13,0  ' Bright Magenta on Black
'             COLOR 11,0  ' Bright Cyan    on Black
'             COLOR 15,0  ' Bright White   on Black
'             COLOR  7,0  '        White   on Black (standard DOS)

' Notes --------------------------------------------------------------------

'  - Routine is intended for use in processing/conversion procedures running
'    from DOS prompt and displaying processing messages on DOS screen.
'  - Invalid usage of "%" delimiters could get message distorted; check in
'    this case all instances of "%<code>%" entries.
'  - Invalid color code is ignored.

' Example ------------------------------------------------------------------

'    CALL PRNTCLR("%B%Batch command %C%tracing %B%mode is now %C%OFF%D%")

' External Function --------------------------------------------------------

     DECLARE FUNCTION TAILSTR$(Strng$,Delim$)

' Start Routine ------------------------------------------------------------

     DEFINT A-Z  ' All defaulted variables are integer

     SUB PRNTCLR(Text$)

' Print Colored Text to Screen ---------------------------------------------

     WHILE (LEN(Text$)>0)
           IF (LEFT$(Text$,1)="%") THEN
              IF (MID$(Text$,3,1)="%") THEN
                 Clr.Code$=MID$(Text$,2,1)
                 Text$=MID$(Text$,4)
                 IF (VERIFY(Clr.Code$,"RGYBMCWD")=0) THEN
                    IF (Clr.Code$="D") THEN
                       Clr.Numb=7
                    ELSE
                       Clr.Numb=8+INSTR("BGCRMYW",Clr.Code$)
                    END IF
                    COLOR Clr.Numb,0
                 END IF
              ELSE
                 Text$=MID$(Text$,2)
              END IF
           ELSE
              Text.Piece$=EXTRACT$(Text$,"%")
              Text$      =TAILSTR$(Text$,"%")
              IF (LEN(Text$)>0) THEN
                 Text$="%"+Text$
              END IF
              PRINT Text.Piece$;
           END IF
     WEND

' Finish Routine ------------------------------------------------------------

     PRINT

     END SUB