Uncompressing 7z archives with more than one file fails

[muttleyxd]

Looks similar to #46 - this code will fail with 7z archive that contains two or more files

use compress_tools::*;
use std::fs::File;
use std::path::Path;

fn main() -> Result<()> {
    let args: Vec<String> = std::env::args().collect();
    if args.len() != 2 {
        panic!("Usage: {} <7z archive>", args[0]);
    }

    let mut source = File::open(&args[1])?;
    let dest = Path::new("/tmp/dest");
    uncompress_archive(&mut source, &dest, Ownership::Ignore)?;

    Ok(())
}

I prepared a repository which allows to easily reproduce the issue
https://github.com/muttleyxd/compress-tools-rs-7z-unpack-failure

This happens on Arch Linux, 7z version 17.03, libarchive version 3.5.1-1.

./create-7z-with-two-files.sh
+ rm two_files.7z 1 2
+ touch 1 2
+ 7z a two_files.7z 1 2

7-Zip [64] 17.03 : Copyright (c) 1999-2020 Igor Pavlov : 2017-08-28
p7zip Version 17.03 (locale=en_US.UTF-8,Utf16=on,HugeFiles=on,64 bits,32 CPUs x64)

Scanning the drive:
2 files, 0 bytes

Creating archive: two_files.7z

Items to compress: 2

    
Files read from disk: 0
Archive size: 118 bytes (1 KiB)
Everything is Ok
+ cargo build
    Finished dev [unoptimized + debuginfo] target(s) in 0.00s
+ cargo run -- ./two_files.7z
    Finished dev [unoptimized + debuginfo] target(s) in 0.00s
     Running `target/debug/rust_7z_unpack_investigation ./two_files.7z`
Error: Extraction("Current client reader does not support seeking a device")

[muttleyxd]

Now it works fine, thank you for very quick fix 😃