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   comp.sys.apple2      Discussion about Apple II micros      56,720 messages   

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   Message 54,726 of 56,720   
   duhast6377@gmail.com to mmphosis   
   Re: Displaying text file from Applesoft   
   13 Apr 21 15:24:00   
   
   From: duhas...@gmail.com   
      
   On Monday, April 12, 2021 at 11:45:36 PM UTC-4, mmphosis wrote:   
   > If only you knew how many characters were in the text file beforehand. Error   
   > handling is inelegant. Gracefully handle the End Of File (EOF)   
   >   
   > 0 D$ = CHR$(4)   
   > REM 10 PRINT D$"NOMONC,I,O"   
   > 20 INPUT F$   
   > 30 PRINT D$"VERIFY"F$   
   > 40 M$ = CHR$(13)   
   > 50 PRINT D$"OPEN"F$M$D$"READ"F$   
   > 60 ONERR GOTO 100   
   > 70 GET C$   
   > 80 PRINT M$C$;   
   > 90 GOTO 70   
   > 100 POKE 216,0   
   > 120 EOF = PEEK(222) = 5   
   > 130 IF NOT EOF THEN RESUME   
   > 140 PRINT D$"CLOSE"   
   >   
   > FN is a keyword.   
   > INPUT won't handle long lines.   
   > INPUT will ignore extra characters from where a comma or a colon starts in   
   > the line.   
   > PRINT M$C$; might be a DOS 3.3 thing, I didn't test this in ProDOS.   
      
   I'm using Prodos, and I could know how many characters are in the file as it   
   will be a fixed help menu.  If I know ahead of time would I just use a for   
   next loop?   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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