unpack.c

#include <unistd.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include "lz4.h"

int main(int argc, char** argv)
{
    (void)argc; (void)argv;

    char ibuf[64*1024], obuf[256*1024];
    uint32_t sz;
    ssize_t n, retn;

    n = read(0, &sz, 4);
    if (n != 4) {
        printf("failed to read size");
        exit(1);
    }

    n = read(0, ibuf, sizeof(ibuf));

    retn = LZ4_decompress_safe(ibuf, obuf,n, sizeof(obuf));

    printf("got %ld (want %d)\n", retn, sz);
}