src/sfs/wadcvt.dpr

   1 {$MODE OBJFPC}
   2 {$IFDEF WINDOWS}
   3   {$APPTYPE CONSOLE}
   4 {$ENDIF}
   5 program __wadcvt__;
   6
   7 uses
   8   SysUtils,
   9   Classes,
  10   utils in '../shared/utils.pas',
  11   xstreams in '../shared/xstreams.pas',
  12   crc,
  13   sfs,
  14   sfsPlainFS,
  15   sfsZipFS,
  16   paszlib;
  17
  18
  19 procedure processed (count: Cardinal);
  20 begin
  21   //writeln('  read ', count, ' bytes');
  22 end;
  23
  24
  25 // returs crc
  26 function zpack (ds: TStream; ss: TStream): LongWord;
  27 const
  28   IBSize = 65536;
  29   OBSize = 65536;
  30 var
  31   zst: TZStream;
  32   ib, ob: PByte;
  33   ibpos: Cardinal;
  34   err: Integer;
  35   rd, f: Integer;
  36   eof: Boolean;
  37   crc: LongWord;
  38 begin
  39   result := 0;
  40   crc := crc32(0, nil, 0);
  41   GetMem(ib, IBSize);
  42   GetMem(ob, OBSize);
  43   try
  44     zst.next_out := ob;
  45     zst.avail_out := OBSize;
  46     err := deflateInit2(zst, Z_BEST_COMPRESSION, Z_DEFLATED, -15, 9, 0);
  47     if err <> Z_OK then raise Exception.Create(zerror(err));
  48     try
  49       ibpos := 0;
  50       zst.next_out := ob;
  51       zst.avail_out := OBSize;
  52       eof := false;
  53       while true do
  54       begin
  55         while not eof and (ibpos < IBSize) do
  56         begin
  57           rd := ss.read((ib+ibpos)^, IBSize-ibpos);
  58           if rd < 0 then raise Exception.Create('reading error');
  59           eof := (rd <> IBSize-ibpos);
  60           if rd <> 0 then begin crc := crc32(crc, Pointer(ib+ibpos), rd); result := crc; end;
  61           Inc(ibpos, rd);
  62           if rd <> 0 then processed(rd);
  63         end;
  64         zst.next_in := ib;
  65         zst.avail_in := ibpos;
  66         if eof then break;
  67         err := deflate(zst, Z_NO_FLUSH);
  68         if (err <> Z_OK) and (err <> Z_STREAM_END) then raise Exception.Create(zerror(err));
  69         if zst.avail_out < OBSize then
  70         begin
  71           writeln('  written ', OBSize-zst.avail_out, ' bytes');
  72           ds.writeBuffer(ob^, OBSize-zst.avail_out);
  73           zst.next_out := ob;
  74           zst.avail_out := OBSize;
  75         end;
  76         // shift input buffer
  77         if zst.avail_in < ibpos then
  78         begin
  79           rd := 0;
  80           for f := ibpos-zst.avail_in to ibpos-1 do
  81           begin
  82             ib[rd] := ib[f];
  83             Inc(rd);
  84           end;
  85           ibpos := rd;
  86           //writeln(' rd: ', zst.avail_in);
  87         end;
  88       end;
  89       // pack leftovers
  90       while zst.avail_in > 0 do
  91       begin
  92         err := deflate(zst, Z_NO_FLUSH);
  93         if (err <> Z_OK) and (err <> Z_STREAM_END) then raise Exception.Create(zerror(err));
  94         if zst.avail_out < OBSize then
  95         begin
  96           //writeln('  written ', OBSize-zst.avail_out, ' bytes');
  97           ds.writeBuffer(ob^, OBSize-zst.avail_out);
  98           zst.next_out := ob;
  99           zst.avail_out := OBSize;
 100         end;
 101       end;
 102       // stream compressed, flush zstream
 103       while true do
 104       begin
 105         zst.avail_in := 0;
 106         zst.next_out := ob;
 107         zst.avail_out := OBSize;
 108         err := deflate(zst, Z_FINISH);
 109         if zst.avail_out < OBSize then
 110         begin
 111           //writeln('  written ', OBSize-zst.avail_out, ' bytes');
 112           ds.writeBuffer(ob^, OBSize-zst.avail_out);
 113         end;
 114         if err <> Z_OK then break;
 115       end;
 116       // succesfully flushed?
 117       if (err <> Z_STREAM_END) then raise Exception.Create(zerror(err));
 118     finally
 119       deflateEnd(zst);
 120     end;
 121   finally
 122     FreeMem(ob);
 123     FreeMem(ib);
 124   end;
 125 end;
 126
 127
 128 {
 129 procedure TProg.putStr (const s: string; newline: Boolean=false);
 130 begin
 131   write(#13, s);
 132   while lastlen > length(s) do
 133   begin
 134     write(' ');
 135     Dec(lastlen);
 136   end;
 137   if newline then
 138   begin
 139     writeln;
 140     lastlen := 0;
 141   end
 142   else
 143   begin
 144     lastlen := length(s);
 145   end;
 146 end;
 147
 148 procedure TProg.onProgress (sender: TObject; const percent: double);
 149 var
 150   prc: Integer;
 151 begin
 152   prc := trunc(percent*100.0);
 153   putStr(Format('compressing %-33s  %3d%%', [lastname, prc]));
 154 end;
 155
 156 procedure TProg.onFileStart (sender: TObject; const fileName: string);
 157 begin
 158   lastname := fileName;
 159   putStr(Format('compressing %-33s  %3d%%', [lastname, 0]));
 160 end;
 161
 162 procedure TProg.onFileEnd (sender: TObject; const ratio: double);
 163 begin
 164   putStr(Format('compressed  %-33s  %f', [lastname, ratio]), true);
 165 end;
 166 }
 167
 168
 169 // returns new file name
 170 function detectExt (fpath, fname: string; fs: TStream): string;
 171 var
 172   buf: PChar;
 173   buflen: Integer;
 174   f: Integer;
 175   st: string[24];
 176 begin
 177   result := fname;
 178   if length(ExtractFileExt(fname)) <> 0 then exit;
 179   if fs.size < 16 then exit;
 180   buflen := Integer(fs.size);
 181   GetMem(buf, buflen);
 182   try
 183     fs.ReadBuffer(buf^, buflen);
 184     // xm
 185     Move(buf^, (PChar(@st[1]))^, 16);
 186     st[0] := #16;
 187     if (st = 'Extended Module:') then
 188     begin
 189       result := result+'.xm';
 190       exit;
 191     end;
 192     if (buf[0] = 'D') and (buf[1] = 'F') and (buf[2] = 'W') and
 193        (buf[3] = 'A') and (buf[4] = 'D') and (buf[5] = #$1) then
 194     begin
 195       result := result+'.wad';
 196       exit;
 197     end;
 198     if (buf[0] = 'M') and (buf[1] = 'A') and (buf[2] = 'P') and (buf[3] = #$1) then
 199     begin
 200       result := result+'.dfmap';
 201       exit;
 202     end;
 203     if (buf[0] = 'M') and (buf[1] = 'T') and (buf[2] = 'h') and (buf[3] = 'd') then
 204     begin
 205       result := result+'.mid';
 206       exit;
 207     end;
 208     if (buf[0] = 'R') and (buf[1] = 'I') and (buf[2] = 'F') and (buf[3] = 'F') and
 209        (buf[8] = 'W') and (buf[9] = 'A') and (buf[10] = 'V') and (buf[11] = 'E') then
 210     begin
 211       result := result+'.wav';
 212       exit;
 213     end;
 214     // mp3 (stupid hack)
 215     for f := 0 to 128-6 do
 216     begin
 217       if (buf[f+0] = #$4) and (buf[f+1] = 'L') and
 218          (buf[f+2] = 'A') and (buf[f+3] = 'M') and
 219          (buf[f+4] = 'E') and (buf[f+5] = '3') then
 220       begin
 221         result := result+'.mp3';
 222         exit;
 223       end;
 224     end;
 225     // more mp3 hacks
 226     if (buf[0] = 'I') and (buf[1] = 'D') and (buf[2] = '3') and (buf[3] <= #4) then
 227     begin
 228       result := result+'.mp3';
 229       exit;
 230     end;
 231     if buflen > 128 then
 232     begin
 233       if (buf[buflen-128] = 'T') and (buf[buflen-127] = 'A') and (buf[buflen-126] = 'G') then
 234       begin
 235         result := result+'.mp3';
 236         exit;
 237       end;
 238     end;
 239     // targa (stupid hack; this "signature" is not required by specs)
 240     if buflen >= 18 then
 241     begin
 242       Move((buf+buflen-18)^, (PChar(@st[1]))^, 16);
 243       st[0] := #16;
 244       if st = 'TRUEVISION-XFILE' then
 245       begin
 246         result := result+'.tga';
 247         exit;
 248       end;
 249     end;
 250   finally
 251     FreeMem(buf);
 252   end;
 253 end;
 254
 255
 256 type
 257   TFileInfo = class
 258   public
 259     name: AnsiString;
 260     pkofs: Int64; // offset of file header
 261     size: Int64;
 262     pksize: Int64;
 263     crc: LongWord;
 264     method: Word;
 265
 266     constructor Create ();
 267   end;
 268
 269 constructor TFileInfo.Create ();
 270 begin
 271   name := '';
 272   pkofs := 0;
 273   size := 0;
 274   pksize := 0;
 275   crc := crc32(0, nil, 0);
 276   method := 0;
 277 end;
 278
 279
 280 function ZipOne (ds: TStream; fname: string; st: TStream): TFileInfo;
 281 var
 282   oldofs, nfoofs, pkdpos: Int64;
 283   sign: packed array [0..3] of Char;
 284 begin
 285   result := TFileInfo.Create();
 286   result.pkofs := ds.position;
 287   result.size := st.size;
 288   result.name := fname;
 289   if result.size > 0 then result.method := 8 else result.method := 0;
 290   // write local header
 291   sign := 'PK'#3#4;
 292   ds.writeBuffer(sign, 4);
 293   writeInt(ds, Word($10)); // version to extract
 294   writeInt(ds, Word(0)); // flags
 295   writeInt(ds, Word(result.method)); // compression method
 296   writeInt(ds, Word(0)); // file time
 297   writeInt(ds, Word(0)); // file date
 298   nfoofs := ds.position;
 299   writeInt(ds, LongWord(result.crc)); // crc32
 300   writeInt(ds, LongWord(result.pksize)); // packed size
 301   writeInt(ds, LongWord(result.size)); // unpacked size
 302   writeInt(ds, Word(length(fname))); // name length
 303   writeInt(ds, Word(0)); // extra field length
 304   ds.writeBuffer(fname[1], length(fname));
 305   // now write packed data
 306   if result.size > 0 then
 307   begin
 308     pkdpos := ds.position;
 309     st.position := 0;
 310     result.crc := zpack(ds, st);
 311     result.pksize := ds.position-pkdpos;
 312     // fix header
 313     oldofs := ds.position;
 314     ds.position := nfoofs;
 315     writeInt(ds, LongWord(result.crc)); // crc32
 316     writeInt(ds, LongWord(result.pksize)); // crc32
 317     ds.position := oldofs;
 318   end;
 319 end;
 320
 321
 322 procedure writeCentralDir (ds: TStream; files: array of TFileInfo);
 323 var
 324   cdofs, cdend: Int64;
 325   sign: packed array [0..3] of Char;
 326   f: Integer;
 327 begin
 328   cdofs := ds.position;
 329   for f := 0 to high(files) do
 330   begin
 331     sign := 'PK'#1#2;
 332     ds.writeBuffer(sign, 4);
 333     writeInt(ds, Word($10)); // version made by
 334     writeInt(ds, Word($10)); // version to extract
 335     writeInt(ds, Word(0)); // flags
 336     writeInt(ds, Word(files[f].method)); // compression method
 337     writeInt(ds, Word(0)); // file time
 338     writeInt(ds, Word(0)); // file date
 339     writeInt(ds, LongWord(files[f].crc));
 340     writeInt(ds, LongWord(files[f].pksize));
 341     writeInt(ds, LongWord(files[f].size));
 342     writeInt(ds, Word(length(files[f].name))); // name length
 343     writeInt(ds, Word(0)); // extra field length
 344     writeInt(ds, Word(0)); // comment length
 345     writeInt(ds, Word(0)); // disk start
 346     writeInt(ds, Word(0)); // internal attributes
 347     writeInt(ds, LongWord(0)); // external attributes
 348     writeInt(ds, LongWord(files[f].pkofs)); // header offset
 349     ds.writeBuffer(files[f].name[1], length(files[f].name));
 350   end;
 351   cdend := ds.position;
 352   // write end of central dir
 353   sign := 'PK'#5#6;
 354   ds.writeBuffer(sign, 4);
 355   writeInt(ds, Word(0)); // disk number
 356   writeInt(ds, Word(0)); // disk with central dir
 357   writeInt(ds, Word(length(files))); // number of files on this dist
 358   writeInt(ds, Word(length(files))); // number of files total
 359   writeInt(ds, LongWord(cdend-cdofs)); // size of central directory
 360   writeInt(ds, LongWord(cdofs)); // central directory offset
 361   writeInt(ds, Word(0)); // archive comment length
 362 end;
 363
 364
 365 var
 366   fs, fo: TStream;
 367   fl: TSFSFileList;
 368   f: Integer;
 369   infname: string;
 370   outfname: string;
 371   dvfn: string;
 372   newname: string;
 373   files: array of TFileInfo;
 374   nfo: TFileInfo;
 375 begin
 376   if ParamCount() < 1 then
 377   begin
 378     WriteLn('usage: wadcvt file.wad');
 379     Halt(1);
 380   end;
 381
 382   infname := ParamStr(1);
 383   if not StrEquCI1251(ExtractFileExt(infname), '.wad') and not StrEquCI1251(ExtractFileExt(infname), '.dfwad') then
 384   begin
 385     writeln('wtf?!');
 386     Halt(1);
 387   end;
 388
 389   if ParamCount() > 1 then
 390   begin
 391     outfname := ParamStr(2);
 392   end
 393   else
 394   begin
 395     outfname := ChangeFileExt(infname, '.pk3');
 396   end;
 397
 398   if not SFSAddDataFile(infname) then begin WriteLn('shit!'); Halt(1); end;
 399   dvfn := SFSGetLastVirtualName(infname);
 400
 401   files := nil;
 402
 403   fl := SFSFileList(dvfn);
 404   if fl = nil then
 405   begin
 406     writeln('wtf?!');
 407     Halt(1);
 408   end;
 409
 410   fo := TFileStream.Create(outfname, fmCreate);
 411   try
 412     for f := 0 to fl.Count-1 do
 413     begin
 414       if length(fl[f].fName) = 0 then continue;
 415       fs := SFSFileOpen(dvfn+'::'+fl[f].fPath+fl[f].fName);
 416       newname := detectExt(fl[f].fPath, fl[f].fName, fs);
 417       fs.position := 0;
 418       writeln('[', f+1, '/', fl.Count, ']: ', fl[f].fPath+newname, '  ', fs.size);
 419       //ZEntries.AddFileEntry(fs, fl[f].fPath+newname);
 420       nfo := ZipOne(fo, fl[f].fPath+fl[f].fName, fs);
 421       SetLength(files, length(files)+1);
 422       files[high(files)] := nfo;
 423     end;
 424     writeCentralDir(fo, files);
 425   except
 426     fo.Free();
 427     fo := nil;
 428     DeleteFile(outfname);
 429   end;
 430   if fo <> nil then fo.Free();
 431 end.