lines.rs

extern mod extra;

use std::{os, str, vec};
use std::path::Path;
use std::rt::io;
use std::rt::io::support::PathLike;
use std::rt::io::support;
use std::rt::io::file;
use std::rt::io::{Reader, Writer};
use std::rt::io::file::{FileInfo, FileReader};
use extra::sort;


fn main() {
    let args = os::args();
    let inpath = &Path::new(args[1].clone());
    let outpath = &Path::new(args[2].clone());
    if !inpath.exists() {
        fail!("input file doesn't exist");
    }

    let mut infile = inpath.open_reader(io::Open).expect("can't open file");
    let size = file::stat(inpath).expect("can't stat").size;

    println!("Size of file is: {}", size);

    let mut buff = vec::from_elem(size as uint, 0 as u8);
    let read_str = match infile.read(buff).unwrap() {
        -1 | 0  => fail!("error reading"),
        n       => str::from_utf8(buff.slice_to(n))
    };
    let mut lines : ~[&str] = read_str.trim().split_iter('\n').collect();

    sort::quick_sort3(lines);

    let mut outfile = outpath.open_writer(io::Create).expect("can't open output");
    let outbuff = lines.connect("\n");
    outfile.write(outbuff.as_bytes());

    println!("Done!")
}