The tarlib's discuss from abergmeier

tarlib's Issues

decompress is not working

Hello,

I think this project is very useful.

I tar a text file then try to decompress that.
However, the output file is not correct.

Here is my code.
Is here any wrong, thank you.

#include <stdio.h>
#include <stdlib.h>
#include "tarlib/tarlib.h"

#define BLOCK_SIZE 1024

int main() {
    tar_stream stream;
    tar_inflateInit( &stream );

    FILE *in = fopen("test.tar", "rb");
    FILE *out = fopen("tmp.txt", "wb" );

    unsigned char buffer[BLOCK_SIZE];
    unsigned char outbuff[BLOCK_SIZE];

    size_t read = 0;
    size_t total = 0;

    int ret;
    while((read = fread(buffer, 1, BLOCK_SIZE, in)) > 0) {
        if(ferror(in)) {
            printf("Read block failed\n");
            tar_inflateEnd(&stream);
            return 0;
        }

        stream.avail_in = read;
        stream.next_in = buffer;

        do {
            stream.len_out = BLOCK_SIZE;
            stream.ptr_out = outbuff;
            ret = tar_inflate(&stream, TAR_SYNC_FLUSH);

            if (ret < 0) {
                printf("tarlib error %d\n", ret);
                tar_inflateEnd(&stream);
                return 0;
            }

            unsigned have = BLOCK_SIZE - stream.len_out;

            if(fwrite(outbuff, 1, have, out) != have || ferror(out)) {
                printf("Writing block failed\n");
                tar_inflateEnd(&stream);
                return 0;
            }
        } 
        while(stream.len_out == 0);

        total += read;
    }

    printf("Finish\n");
    tar_inflateEnd( &stream );

    fclose(out);
    fclose(in);

    return 0;
}