www.pudn.com > bambam004_source.rar > appack.pas

(* 
 * aPLib compression library  -  the smaller the better :) 
 * 
 * TMT Pascal packing example 
 * 
 * Copyright (c) 1998-2004 by Joergen Ibsen / Jibz 
 * All Rights Reserved 
 * 
 * http://www.ibsensoftware.com/ 
 * 
 * -> VPascal by Veit Kannegieser, 23.09.1998 
 * -> TMT Pascal by Oleg Prokhorov 
 *) 
 
uses aplibu; 
 
var 
  infile,outfile     :file; 
  inbuffer,outbuffer :pointer; 
  workmem            :pointer; 
  insize,outsize     :longint; 
 
begin 
  (* check number of parameters *) 
  if paramcount<1 then 
    begin 
      writeln; 
      writeln('Syntax:   APPACK  [output file]'); 
      writeln; 
      halt(1); 
    end; 
 
  (* open input file and read data *) 
  assign(infile,paramstr(1)); 
  reset(infile,1); 
  insize:=filesize(infile); 
  getmem(inbuffer,insize); 
  blockread(infile,inbuffer^,insize); 
  close(infile); 
 
  (* get output mem and workmem *) 
  getmem(outbuffer,aP_max_packed_size(insize)); 
  getmem(workmem,aP_workmem_size(insize)); 
 
  (* pack data *) 
  outsize:=aPsafe_pack(inbuffer^,outbuffer^,insize,workmem^,@cb1,nil); 
  writeln; 
 
  if outsize=aPLib_Error then 
    begin 
      WriteLn; 
      WriteLn('ERR: an error occured while compressing'); 
      WriteLn; 
      Halt(1); 
    end; 
 
  (* write packed data *) 
  if paramcount<2 then 
    begin 
      assign(outfile,'out.apk'); 
      writeln; 
      writeln('No output file specified, writing to ''out.apk'''); 
    end else assign(outfile,paramstr(2)); 
  rewrite(outfile,1); 
  blockwrite(outfile,outbuffer^,outsize); 
  close(outfile); 
 
  (* free mem *) 
  freemem(inbuffer,insize); 
  freemem(outbuffer,aP_max_packed_size(insize)); 
  freemem(workmem,aP_workmem_size(insize)); 
 
end.