void
filinit(File *f, char *t)
{
File *g;
f->wins.wnext = f->wins.wprev = &f->wins;
f->name = strdup(t);
for(g = flist.next; g != &flist && filcmp(g, f) < 0; g = g->next)
;
f->prev = g->prev;
f->next = g;
g->prev->next = f;
g->prev = f;
}
/*! \brief Config file parser
* \param gobConf Config file to parse
* \param stk STK/ITK archive file to be created
* \param chunkCount Number of chunks to be written in the archive file
* \return A list of chunks
*
* This function reads the '.gob' config file (generated by extract_gob_stk).
* It creates the output archive file and a list of chunks containing the file
* and compression information.
* In order to have a slightly better compression ration in some cases (Playtoons), it
* also detects duplicate files.
*/
CompressGob::Chunk *CompressGob::readChunkConf(Common::File &gobConf, Common::Filename &stkName, uint16 &chunkCount) {
Chunk *chunks = new Chunk;
Chunk *curChunk = chunks;
Chunk *parseChunk;
Common::File src1;
Common::Filename srcName("");
char buffer[1024];
chunkCount = 1;
// First read: Output filename
gobConf.scanString(buffer);
stkName.setFullName(buffer);
srcName.setFullPath(stkName.getPath());
// Second read: signature
gobConf.scanString(buffer);
std::string signature(buffer);
if (signature == confSTK21)
error("STK21 not yet handled");
else if (signature != confSTK10)
error("Unknown format signature %s", signature.c_str());
print("Checking duplicate files");
// All the other reads concern file + compression flag
gobConf.scanString(buffer);
while (!gobConf.eos()) {
strcpy(curChunk->name, buffer);
srcName.setFullName(buffer);
gobConf.scanString(buffer);
if ((strcmp(buffer, "1") == 0 )|| (_execMode & MODE_FORCE))
curChunk->packed = true;
else
curChunk->packed = false;
src1.open(srcName, "rb");
src1.seek(0, SEEK_END);
// if file is too small, force 'Store' method
if ((curChunk->realSize = src1.pos()) < 8)
curChunk->packed = 0;
parseChunk = chunks;
while (parseChunk != curChunk) {
if ((parseChunk->realSize == curChunk->realSize) & (parseChunk->packed != 2)) {
if (strcmp(parseChunk->name, curChunk->name) == 0)
error("Duplicate filename found in conf file: %s", parseChunk->name);
srcName.setFullName(parseChunk->name);
if (filcmp(src1, srcName)) {
// If files are identical, use the same compressed chunk instead of re-compressing the same thing
curChunk->packed = 2;
curChunk->replChunk = parseChunk;
print("Identical files : %s %s (%d bytes)", curChunk->name, parseChunk->name, curChunk->realSize);
break;
}
}
parseChunk = parseChunk->next;
}
src1.close();
gobConf.scanString(buffer);
if (!gobConf.eos()) {
curChunk->next = new Chunk;
curChunk = curChunk->next;
chunkCount++;
}
}
return chunks;
}
