bool checkIndex(PAKFile &file) {
uint32 size = 0;
const uint8 *data = file.getFileData("INDEX", &size);
if (!data)
return false;
Index index = parseIndex(data, size);
if (index.version != kKyraDatVersion)
return false;
if (index.includedGames * 2 + 8 != size)
return false;
return true;
}
bool updateIndex(PAKFile &out, const ExtractInformation *eI) {
uint32 size = 0;
const uint8 *data = out.getFileData("INDEX", &size);
Index index;
if (data)
index = parseIndex(data, size);
GameDef gameDef = createGameDef(eI);
if (index.version == kKyraDatVersion) {
if (std::find(index.gameList.begin(), index.gameList.end(), gameDef) == index.gameList.end()) {
++index.includedGames;
index.gameList.push_back(gameDef);
} else {
// Already included in the game list, thus we do not need any further processing here.
return true;
}
} else {
index.version = kKyraDatVersion;
index.includedGames = 1;
index.gameList.push_back(gameDef);
}
const uint32 indexBufferSize = 8 + index.includedGames * 2;
uint8 *indexBuffer = new uint8[indexBufferSize];
assert(indexBuffer);
uint8 *dst = indexBuffer;
WRITE_BE_UINT32(dst, index.version); dst += 4;
WRITE_BE_UINT32(dst, index.includedGames); dst += 4;
for (Index::GameList::const_iterator i = index.gameList.begin(); i != index.gameList.end(); ++i) {
WRITE_BE_UINT16(dst, *i); dst += 2;
}
out.removeFile("INDEX");
if (!out.addFile("INDEX", indexBuffer, indexBufferSize)) {
fprintf(stderr, "ERROR: couldn't update kyra.dat INDEX\n");
delete[] indexBuffer;
return false;
}
return true;
}