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#include <libbz3.h>
#include <stdio.h>
#include <stdlib.h>
#define MB (1024 * 1024)
int main(void) {
printf("Compressing shakespeare.txt back and forth in memory.\n");
// Read the entire "shakespeare.txt" file to memory:
FILE * fp = fopen("shakespeare.txt", "rb");
fseek(fp, 0, SEEK_END);
size_t size = ftell(fp);
fseek(fp, 0, SEEK_SET);
char * buffer = malloc(size);
fread(buffer, 1, size, fp);
fclose(fp);
// Compress the file:
size_t out_size = bz3_bound(size);
char * outbuf = malloc(out_size);
int bzerr = bz3_compress(1 * MB, buffer, outbuf, size, &out_size);
if (bzerr != BZ3_OK) {
printf("bz3_compress() failed with error code %d", bzerr);
return 1;
}
printf("%d => %d\n", size, out_size);
// Decompress the file.
bzerr = bz3_decompress(outbuf, buffer, out_size, &size);
if (bzerr != BZ3_OK) {
printf("bz3_decompress() failed with error code %d", bzerr);
return 1;
}
printf("%d => %d\n", out_size, size);
free(buffer);
free(outbuf);
return 0;
}
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