'===========================================================================
' Subject: SIMPLE QWK READER                 Date: 03-06-96 (17:43)       
' Author:  The ABC Programmer                Code: QB, QBasic, PDS        
' Origin:  Try ADVANCED QWK READER         Packet: MISC.ABC
'===========================================================================
'===================[ Simple Little QWK Reader ]=======================
'
' This SIMPLE little ditty let's you read SWAG or QWK files which have
' EXACTLY the same format.  Additions to dump to file implemented.
' Original PASCAL code by Swag Support Team (Gayle Davis)
' Converted and optimized to BASIC by William Yu (03-06-96)
'
'----------------------------------------------------------------------

DECLARE SUB DumpHeader (QWK AS ANY)
DECLARE SUB ReadMessage (HDR AS ANY, RelNum&, Chunks)
DECLARE SUB ReadMsg (NumChunks)
DECLARE SUB ReadWriteHdr (QWK AS ANY)

CONST Height = 25                     ' 25/43/50
CONST False = 0                       ' False = 0
CONST True = NOT False                ' True = -1
CONST DumpQWKtoFile = False           ' Dump messages to file?
                                      ' True = Dump to file
                                      ' False = View from screen
CONST DumpQWKFileName$ = "DUMP.MSG"   ' Dump messages to this file name
CONST QWKPacket$ = "MESSAGES.DAT"     ' MESSAGES.DAT or *.SWG
                                      ' Specify the path if required
TYPE MSGDatHdr                        ' MESSAGES.DAT File Structure
    Status   AS STRING * 1            '  128 bytes altogether
    MSGNum   AS STRING * 7
    Date     AS STRING * 8
    Time     AS STRING * 5
    UpTO     AS STRING * 25           ' Always UpperCase
    UpFROM   AS STRING * 25           ' Always UpperCase
    Subject  AS STRING * 25
    PassWord AS STRING * 12           ' Never/rarely used
    ReferNum AS STRING * 8
    NumChunk AS STRING * 6
    Alive    AS STRING * 1
    LeastSig AS STRING * 1            ' Conference #
    MostSig  AS STRING * 1            ' Used for conf. # greater than 255
    Reserved AS STRING * 3
END TYPE

DIM QWK AS MSGDatHdr

WIDTH 80, Height
CLS

  OPEN QWKPacket$ FOR BINARY AS #1
  IF DumpQWKtoFile THEN OPEN DumpQWKFileName$ FOR OUTPUT AS #2
  SEEK #1, 129  ' Skip Copyright information
  Count& = 129
  WHILE Count& < LOF(1)
        ReadMessage QWK, Count&, Chunks
        IF DumpQWKtoFile THEN
          LOCATE 1, 1: PRINT "Complete:";
          PRINT USING "###.#%"; (Count& + (128 * Chunks)) / LOF(1) * 100
          PRINT #2,
          A$ = INKEY$                        ' ESC Key quits dumping
        ELSE
          PRINT
          PRINT "Press any key to continue .. (ESC Key quits)";
          A$ = INPUT$(1)
          CLS
        END IF
        IF A$ = CHR$(27) THEN CLOSE : END    ' ESC quits Viewing or Dumping
        Count& = Count& + (128 * Chunks)
  WEND
  CLOSE
  END

SUB DumpHeader (QWK AS MSGDatHdr)
   
    PRINT #2, STRING$(80, "=")
    PRINT #2, "   Date: "; QWK.Date; " ("; QWK.Time; ")";
    PRINT #2, , , "Number: "; QWK.MSGNum
    PRINT #2, "   From: "; QWK.UpFROM;
    PRINT #2, , "Refer#: "; QWK.ReferNum
    PRINT #2, "     To: "; QWK.UpTO;
    PRINT #2, , " Recvd: ";
    InCase$ = "-`^#"
    IF INSTR(QWK.Status, InCase$) THEN
      PRINT #2, "YES"
    ELSE
      PRINT #2, "NO"
    END IF
    PRINT #2, "Subject: "; QWK.Subject;
    Conference$ = LTRIM$(STR$(ASC(QWK.MostSig) * 256 + ASC(QWK.LeastSig)))
    PRINT #2, , "  Conf: "; "("; Conference$; ")"
    PRINT #2, STRING$(80, "-")

END SUB

SUB ReadMessage (QWK AS MSGDatHdr, RelNum&, Chunks)
 
  SEEK #1, RelNum&
  ReadWriteHdr QWK
  Chunks = VAL(QWK.NumChunk)
  ReadMsg Chunks

END SUB

SUB ReadMsg (NumChunks)

  DIM Buff AS STRING * 128

  FOR J = 1 TO NumChunks - 1
    GET #1, , Buff
    FOR I = 1 TO 128
      IF MID$(Buff, I, 1) = CHR$(227) THEN
        IF DumpQWKtoFile THEN PRINT #2,  ELSE PRINT
      ELSE
        IF DumpQWKtoFile THEN
          PRINT #2, MID$(Buff, I, 1);
        ELSE
          PRINT MID$(Buff, I, 1);
        END IF
      END IF
      IF CSRLIN = Height - 1 THEN
        LOCATE Height, 1: PRINT "Hit Any Key for Next Page...";
        A$ = INPUT$(1)
        LOCATE 6, 1: PRINT STRING$((Height - 7) * 80, " ");
        LOCATE 6, 1
      END IF
    NEXT I
  NEXT J

END SUB

SUB ReadWriteHdr (QWK AS MSGDatHdr)

    GET #1, , QWK.Status
    GET #1, , QWK.MSGNum
    GET #1, , QWK.Date
    GET #1, , QWK.Time
    GET #1, , QWK.UpTO
    GET #1, , QWK.UpFROM
    GET #1, , QWK.Subject
    GET #1, , QWK.PassWord
    GET #1, , QWK.ReferNum
    GET #1, , QWK.NumChunk
    GET #1, , QWK.Alive
    GET #1, , QWK.LeastSig
    GET #1, , QWK.MostSig
    GET #1, , QWK.Reserved

  IF DumpQWKtoFile THEN
    DumpHeader QWK
  ELSE
    PRINT "Date: "; QWK.Date; " ("; QWK.Time; ")";
    PRINT , , "Number: "; QWK.MSGNum
    PRINT "From: "; QWK.UpFROM;
    PRINT , "Refer#: "; QWK.ReferNum
    PRINT "  To: "; QWK.UpTO;
    PRINT , " Recvd: ";
    InCase$ = "-`^#"
    IF INSTR(QWK.Status, InCase$) THEN
      PRINT "YES"
    ELSE
      PRINT "NO"
    END IF
    PRINT "Subj: "; QWK.Subject;
    Conference$ = LTRIM$(STR$(ASC(QWK.MostSig) * 256 + ASC(QWK.LeastSig)))
    PRINT , "  Conf: "; "("; Conference$; ")"
    PRINT STRING$(80, "-");
  END IF

END SUB