log_generator.rs

use std::io;
use std::io::Write;
use std::io::BufReader;
use std::io::BufRead;
use std::fs;
use std::fs::File;	

static LOG_NAME: &'static str = "log.txt";

fn include_file(file_name: &String) -> bool{
	file_name != &".DS_Store".to_string() &&
	file_name != &"log_generator".to_string() &&
	file_name != &"log_generator.rs".to_string() &&
	file_name != &LOG_NAME.to_string()
}

fn create_log(f : &File) -> io::Result<()>{
    for entry in try!(fs::read_dir("./")) {
        let entry = try!(entry);

        let is_dir = try!(fs::metadata(entry.path())).is_dir();
        if !is_dir {
        	let file_name = entry.path().file_name().unwrap().to_string_lossy().into_owned();

        	if include_file(&file_name){
        		append_file(file_name, f);
        		// println!("Name: {}", file_name);
        	}
        } 
    }

    Ok(())
}

fn append_file (file_name : String, mut log_file : &File) -> io::Result<()>
{
	let title = format!("--------- {} ---------\n", file_name);
	log_file.write_all(title.as_bytes());

	let mut f = File::open(file_name).unwrap();
    let mut file = BufReader::new(&f);
    for line in file.lines() {
    	write!(log_file, "{}\n", line.unwrap());
        // log_file.write_fmt("{}\n", line.unwrap());
    }  


	Ok(())
}

fn main(){
	let mut f = File::create(LOG_NAME).unwrap();
	create_log(&f);
}