static bool decodeIndex(NexasPackage* package) {
fseek(package->file, -4, SEEK_END);
u32 encodedLen;
if (fread(&encodedLen, sizeof(u32), 1, package->file) != 1) {
writeLog(LOG_QUIET, L"ERROR: Unable to read the length of the encoded index!");
return false;
}
writeLog(LOG_VERBOSE, L"The length of the compressed index is %d.", encodedLen);
if (fseek(package->file, -4-encodedLen, SEEK_END) != 0) {
writeLog(LOG_QUIET, L"ERROR: Unable to locate the compressed index!");
return false;
}
ByteArray* encodedData = newByteArray(encodedLen);
byte* data = baData(encodedData);
if (fread(data, sizeof(byte), encodedLen, package->file) != encodedLen) {
writeLog(LOG_QUIET, L"ERROR: Unable to read the compressed index!");
deleteByteArray(encodedData);
return false;
}
for (u32 i = 0; i < encodedLen; ++i) {
data[i] ^= 0xFF;
}
u32 decodedLen = sizeof(IndexEntry) * package->header->entryCount;
ByteArray* originalIndexes =
huffmanDecode(L"Entry Indexes", data, encodedLen, decodedLen);
deleteByteArray(encodedData);
package->indexes = originalIndexes;
return (package->indexes != NULL);
}
int main(int argc, char **argv) {
freopen("in.txt", "rb", stdin);
freopen("out.txt", "wb", stdout);
if (getchar() == 'c') { // Compress
passNewline(stdin);
huffmanEncode(stdin, stdout);
} else { // Decompress
passNewline(stdin);
huffmanDecode(stdin, stdout);
}
return 0;
}
