WWP_DATA 1.0 unit (beta)          for Turbo Pascal 6.0, 7.0

          Copyright (c) 1995-96 by Piotr Warezak and Rafal Wierzbicki

          6 January 1996       Lodz, Poland       All Rights Reserved



   Here is a list of all types, function and procedures implemented in the
WWP_DATA 1.0 unit:

type file_ww;
     type of WWPACK data files.
     Use this type insted of 'file' type!

function ioresult_ww:byte;
     this function returns the status of last I/O operation on the WWPACKed
     data file.
     Standard I/O codes: please see the Turbo Pascal documentation.
     Extended I/O codes:
       250  -  the file is not a WWPACKed data file.
       251  -  unrecognized version of WWPACKed data file.
     Extended I/O code may be set while opening the file (reset_ww function).
       In case of any Extended I/O errors the file will not be open!

procedure assign_ww(var f:file_ww;filename:string);
     this procedure assigns the name of a file to the file_ww variable.
     Please use it to initialize the file you want to read.

procedure reset_ww(var f:file_ww);
     opens assigned file for reading.

procedure close_ww(var f:file_ww);
     closes an opened file.

procedure seek_ww(var f:file_ww;offset:longint);
     sets the current position of a file to 'offset' value.
     See filepos_ww function.

function filesize_ww(var f:file_ww):longint;
     returns the size of a compressed file.
     Warning: this function returns the size of a data stored in the file,
              not the real file size! That means, that the value returned with
              this function is bigger than the real file size!

function filepos_ww(var f:file_ww):longint;
     returns the current position of a file.

procedure blockread_ww(var f:file_ww;var buf;to_read:word;var result:word);
     this procedure reads 'to_read' bytes to the 'buf' from 'f' file.
     After operation the 'result' contains number of read bytes.



WWP_DATA unit is saved in two files. Please choose one:

  WWP_DATA.TPU for Turbo Pascal 7.0
  WWP_DATA.T60 for Turbo Pascal 6.0  (rename to WWP_DATA.TPU)


End of the documentation file.