//----------
size_t Codec::decompress(void * uncompressed, size_t uncompressedSize, const void * compressed, size_t compressedSize) const {
IF_NOT_OK_RETURN(0);
auto newUncompressedSize = uncompressedSize;
auto status = squash_codec_decompress(this->squashCodec, &newUncompressedSize, (uint8_t*) uncompressed, compressedSize, (uint8_t*) compressed, NULL);
if (status != SQUASH_OK) {
OFXSQUASH_WARNING << "[" << this->getName() << "] Decompression failed : " << squash_status_to_string(status);
}
return newUncompressedSize;
}
int main (int argc, char** argv) {
SquashCodec* codec;
const char* uncompressed;
size_t uncompressed_length;
size_t compressed_length;
uint8_t* compressed;
size_t decompressed_length;
char* decompressed;
if (argc != 3) {
fprintf (stderr, "USAGE: %s ALGORITHM STRING\n", argv[0]);
return EXIT_FAILURE;
}
codec = squash_get_codec (argv[1]);
if (codec == NULL) {
fprintf (stderr, "Unable to find algorithm '%s'.\n", argv[1]);
return EXIT_FAILURE;
}
uncompressed = argv[2];
uncompressed_length = strlen (uncompressed);
compressed_length = squash_codec_get_max_compressed_size (codec, uncompressed_length);
compressed = (uint8_t*) malloc (compressed_length);
decompressed_length = uncompressed_length + 1;
decompressed = (char*) malloc (uncompressed_length + 1);
SquashStatus res =
squash_codec_compress (codec,
&compressed_length, compressed,
uncompressed_length, (const uint8_t*) uncompressed,
NULL);
if (res != SQUASH_OK) {
fprintf (stderr, "Unable to compress data [%d]: %s\n",
res, squash_status_to_string (res));
return EXIT_FAILURE;
}
fprintf (stdout, "Compressed a %u byte buffer to %u bytes.\n",
(unsigned int) uncompressed_length, (unsigned int) compressed_length);
res = squash_codec_decompress (codec,
&decompressed_length, (uint8_t*) decompressed,
compressed_length, compressed, NULL);
if (res != SQUASH_OK) {
fprintf (stderr, "Unable to decompress data [%d]: %s\n",
res, squash_status_to_string (res));
return EXIT_FAILURE;
}
/* Notice that we didn't compress the *NULL* byte at the end of the
string. We could have, it's just a waste to do so. */
decompressed[decompressed_length] = '\0';
if (strcmp (decompressed, uncompressed) != 0) {
fprintf (stderr, "Bad decompressed data.\n");
EXIT_FAILURE;
}
fprintf (stdout, "Successfully decompressed.\n");
return EXIT_SUCCESS;
}
