vendor/tar-0.4.14/examples/extract_file.rs

   1 //! An example of extracting a file in an archive.
   2 //!
   3 //! Takes a tarball on standard input, looks for an entry with a listed file
   4 //! name as the first argument provided, and then prints the contents of that
   5 //! file to stdout.
   6
   7 extern crate tar;
   8
   9 use std::io::{stdin, stdout, copy};
  10 use std::env::args_os;
  11 use std::path::Path;
  12
  13 use tar::Archive;
  14
  15 fn main() {
  16     let first_arg = args_os().skip(1).next().unwrap();
  17     let filename = Path::new(&first_arg);
  18     let mut ar = Archive::new(stdin());
  19     for file in ar.entries().unwrap() {
  20         let mut f = file.unwrap();
  21         if f.path().unwrap() == filename {
  22             copy(&mut f, &mut stdout()).unwrap();
  23         }
  24     }
  25 }