Function compress

util/cbfstool/cbfscomptool.c:77–179

}

static int compress(char *infile, char *outfile, char *algoname,
		    int write_header)
{
	int err = 1;
	FILE *fin = NULL;
	FILE *fout = NULL;
	void *indata = NULL;

	const struct typedesc_t *algo = &types_cbfs_compression[0];
	while (algo->name != NULL) {
		if (strcasecmp(algo->name, algoname) == 0) break;
		algo++;
	}
	if (algo->name == NULL) {
		fprintf(stderr, "algo '%s' is not supported.\n", algoname);
		return 1;
	}

	comp_func_ptr comp = compression_function(algo->type);
	if (comp == NULL) {
		printf("no handler associated with algorithm\n");
		return 1;
	}

	fin = fopen(infile, "rb");
	if (!fin) {
		fprintf(stderr, "could not open '%s'\n", infile);
		return 1;
	}
	fout = fopen(outfile, "wb");
	if (!fout) {
		fprintf(stderr, "could not open '%s' for writing\n", outfile);
		goto out;
	}

	if (fseek(fin, 0, SEEK_END) != 0) {
		fprintf(stderr, "could not seek in input\n");
		goto out;
	}
	long insize = ftell(fin);
	if (insize < 0) {
		fprintf(stderr, "could not determine input size\n");
		goto out;
	}
	rewind(fin);

	indata = malloc(insize);
	if (!indata) {
		fprintf(stderr, "out of memory\n");
		goto out;
	}

	void *outdata = malloc(insize);
	if (!outdata) {
		fprintf(stderr, "out of memory\n");
		goto out;
	}
	int outsize;