Соединить и сжать несколько файлов в один

uses

   Zlib;

 procedure
 CompressFiles(Files : TStrings; const
 Filename : String
);
 var

   infile, outfile, tmpFile : TFileStream;
   compr : TCompressionStream;
   i,l : Integer;
   s : String
;

 begin

   if
 Files.Count > 0 then

   begin

     outFile := TFileStream.Create(Filename,fmCreate);
     try

       { the number of files }
       l := Files.Count;
       outfile.Write
(l,SizeOf(l));
       for
 i := 0 to
 Files.Count-1 do

       begin

         infile := TFileStream.Create(Files[i],fmOpenRead);
         try

           { the original filename }
           s := ExtractFilename(Files[i]);
           l := Length(s);
           outfile.Write
(l,SizeOf(l));
           outfile.Write
(s[1],l);
           { the original filesize }
           l := infile.Size;
           outfile.Write
(l,SizeOf(l));
           { compress and store the file temporary}
           tmpFile := TFileStream.Create('tmp',fmCreate);
           compr := TCompressionStream.Create(clMax,tmpfile);
           try

             compr.CopyFrom(infile,l);
           finally

             compr.Free;
             tmpFile.Free;
           end
;
           { append the compressed file to the destination file }
           tmpFile := TFileStream.Create('tmp',fmOpenRead);
           try

             outfile.CopyFrom(tmpFile,0);
           finally

             tmpFile.Free;
           end
;
         finally

           infile.Free;
         end
;
       end
;
     finally

       outfile.Free;
     end
;
     DeleteFile('tmp');
   end
;
 end
;

 procedure
 DecompressFiles(const
 Filename, DestDirectory : String
);
 var

   dest,s : String
;
   decompr : TDecompressionStream;
   infile, outfile : TFilestream;
   i,l,c : Integer;
 begin

   // IncludeTrailingPathDelimiter (D6/D7 only) 
  dest := IncludeTrailingPathDelimiter(DestDirectory);

   infile := TFileStream.Create(Filename,fmOpenRead);
   try

     { number of files }
     infile.Read
(c,SizeOf(c));
     for
 i := 1 to
 c do

     begin

       { read filename }
       infile.Read
(l,SizeOf(l));
       SetLength(s,l);
       infile.Read
(s[1],l);
       { read filesize }
       infile.Read
(l,SizeOf(l));
       { decompress the files and store it }
       s := dest+s; //include the path 
      outfile := TFileStream.Create(s,fmCreate);
       decompr := TDecompressionStream.Create(infile);
       try

         outfile.CopyFrom(decompr,l);
       finally

         outfile.Free;
         decompr.Free;
       end
;
     end
;
   finally

     infile.Free;
   end
;
 end
;

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