Squish

 BBS: Inland Empire Archive
Date: 02-26-93 (18:13)             Number: 214
From: CORIDON HENSHAW              Refer#: NONE
  To: JEFF WARD                     Recvd: NO  
Subj: Squish                         Conf: (2) Quik_Bas

Hello Jeff!

Wednesday February 24 1993, Jeff Ward writes to Coridon Henshaw:

 JW>  Can you tell me where you got the specs for the Squish message base? I
 JW> would apprecite any info I can get my hands on. Thanks!

Right here:

===Chop===
TYPE SQIDX      ' .SQI file: one of these per message (12 bytes)
  Offst  AS LONG
  UMSGID AS LONG
  Hash   AS LONG
END TYPE

TYPE SQBASE     ' .SQD database header (256 bytes): 1 per .SQD file
  SLEN    AS INTEGER ' A signed INTEGER with a min or -
32767 and a max of 32767
  RSVD1   AS INTEGER
  NUMMSG  AS LONG       ' No of msgs in area
  HiMsg   AS LONG       ' Highest msg number (same as NUMMSG)
  SKIPMSG AS LONG       ' # of msgs to protect from autoKill
  HiWater AS LONG       ' Highwatermark
  UID     AS LONG       ' # of next UMSGID to use
  BaseId  AS STRING * 80' Name (incl path) of this message base
  FBEGIN  AS LONG       ' Offset to 1st frame
  FLAST   AS LONG       ' Offset to last frame
  FFBEGIN AS LONG       ' Offset to 1st free frame
  FFLAST  AS LONG       ' Offset to last free frame
  FEND    AS LONG       ' Offset to end of file
  MAXMSGS AS LONG       ' # of msgs to keep
  MAXDAYS AS INTEGER    ' # of days to keep msgs for
  SZSQHDR AS INTEGER    ' Size of SQHDR (32 bytes)
END TYPE

TYPE SQHDR
        ID     AS LONG
        Nextf  AS LONG
        Prevf  AS LONG
        FLEN   AS LONG
        MsgLen AS LONG
        CLEN   AS LONG
        FTYP   AS INTEGER
        RSVD   AS INTEGER
END TYPE

TYPE SQMESSAGE    ' The message Header, as it appears in a Squish area
     ATTRIB     AS LONG
     Junk       AS STRING * 1
     From       AS STRING * 36
     Dest       AS STRING * 36
     Subj       AS STRING * 72
     OrigZone   AS INTEGER
     OrigNet    AS INTEGER
     OrigNode   AS INTEGER
     OrigPoint  AS INTEGER
     DestZone   AS INTEGER
     DestNet    AS INTEGER
     DestNode   AS INTEGER
     DestPoint  AS INTEGER
     BINDATES   AS STRING * 8
     UTCOFST    AS INTEGER
     ReplyTo    AS LONG
     Replies    AS STRING * 40
     DateMsg    AS STRING * 20
END TYPE
'Ok, now for the explanations: the two main files are
<name>.SQD and_ <name>.SQI.
' The first structure is for the .SQI file (you can open
that one as RANDOM_ with
'a length of 12); the others are for the .SQD file (which you open as BINARY).
'
'There is a one-to-one correspondence between records in .SQI and the (non-
'deleted) messages.  You want message #25: just read the 25th record from the
'.SQI file into the SQIDX-dimensioned variable.  Then, use
the offset SQI.OFFST
'+ 1 to read the SQHDR-dimensioned variable (the SQI offsets start at 0 but QB
'treats the first byte in a BINARY file as byte 1).  This SQHDR is 28-bytes
'long, and it is immediately followed by the 230 bytes of the SQMSG-defined
'variable (the message header), and SQD.MSGLEN bytes of message text.
===Chop===

There you go!

Coridon Henshaw / Sirrus Software / QBCIMR FTSC Standards Technician / SM DEV

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