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/* ScummVM Tools
*
* ScummVM Tools is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "common/endian.h"
#include "common/memstream.h"
#include "common/str.h"
#include "common/util.h"
#include "common/dcl.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
struct FileDescriptorBin {
char name[0x52]; // zero-terminated, rest is filled with what looks like garbage
uint16 compression;
uint16 volume;
uint32 offset_in_volume;
uint32 compressedSize;
uint32 uncompressedSize;
} __attribute__ ((packed));
int main (int argc, char **argv) {
unsigned char * buf;
size_t indexSize;
FILE *fin;
if (argc < 3) {
fprintf (stderr, "USAGE: %s BASENAME OUTDIR\n", argv[0]);
return -1;
}
Common::String base = argv[1];
fin = fopen ((base + ".IDX").c_str(), "rb");
if (fin == NULL) {
fprintf (stderr, "Unable to open %s: %s\n", argv[1], strerror(errno));
return -2;
}
fseek (fin, 0, SEEK_END);
indexSize = ftell (fin);
fseek (fin, 0, SEEK_SET);
buf = (byte *) malloc (indexSize);
fread (buf, 1, indexSize, fin);
fclose (fin);
int filecnt = READ_LE_UINT16(buf);
byte *ptr;
int i;
hexdump(buf + 2, 10);
if (filecnt > (indexSize - 12) / sizeof(FileDescriptorBin))
filecnt = (indexSize - 12) / sizeof(FileDescriptorBin);
for (ptr = buf + 12, i = 0; i < filecnt; ptr += sizeof(FileDescriptorBin), i++) {
FileDescriptorBin *descBin = (FileDescriptorBin *) ptr;
uint32 compressedSize = FROM_LE_32(descBin->compressedSize);
uint32 uncompressedSize = FROM_LE_32(descBin->uncompressedSize);
uint16 compressionAlgo = FROM_LE_16(descBin->compression);
printf("name: %s, compressed=%d, uncompressed=%d, compression=%d, offset=%x, volume = %03d\n",
descBin->name, compressedSize,
uncompressedSize, compressionAlgo, FROM_LE_32(descBin->offset_in_volume), FROM_LE_16(descBin->volume));
if (compressionAlgo != 0 && compressionAlgo != 1) {
fprintf (stderr, "Unsupported compression alorithm for %s, skipping\n", descBin->name);
continue;
}
Common::String fn = Common::String::format("%s/%s", argv[2], descBin->name);
uint32 off = FROM_LE_32(descBin->offset_in_volume);
int vol = FROM_LE_16(descBin->volume);
byte *compressedBuf = new byte[compressedSize];
byte *outptr = compressedBuf;
uint32 rem = compressedSize;
while (rem > 0) {
FILE *fvol = fopen((base + Common::String::format(".%03d", vol)).c_str(), "rb");
fseek(fvol, off, SEEK_SET);
int actual = fread(outptr, 1, rem, fvol);
fclose(fvol);
rem -= actual;
outptr += actual;
if (actual == 0)
break;
vol++;
off = 0;
}
byte *uncompressedBuf;
switch (compressionAlgo) {
case 0:
uncompressedBuf = compressedBuf;
uncompressedSize = compressedSize;
break;
case 1:
Common::MemoryReadStream compressedReadStream(compressedBuf, compressedSize);
uncompressedBuf = new byte[uncompressedSize];
if (!Common::decompressDCL(&compressedReadStream, uncompressedBuf, compressedSize, uncompressedSize)) {
fprintf (stderr, "Unable to decompress %s\n", descBin->name);
continue;
}
break;
}
FILE *fout;
fout = fopen(fn.c_str(), "wb");
if (fout == NULL) {
fprintf (stderr, "Unable to open %s: %s\n", fn.c_str(), strerror(errno));
return -3;
}
fwrite(uncompressedBuf, 1, uncompressedSize, fout);
fclose(fout);
if (uncompressedBuf != compressedBuf)
delete[] uncompressedBuf;
delete[]compressedBuf;
}
return 0;
}
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