md-tangle 0.1.3

A command line tool to tangle code blocks in markdown file to source code file. 
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use std::path::PathBuf;

use std::io;

use md_tangle_engine::{
    file_tangle,
    dir_tangle,
    dir_tangle_rec,
    absolute_lize
};

use clap as cmd;

fn main () -> io::Result <()> {
    let matches = cmd::App::new ("md-tangle")
        .setting(cmd::AppSettings::ArgRequiredElseHelp)
        .author (cmd::crate_authors! ())
        .version (cmd::crate_version! ())
        .arg (cmd::Arg::with_name ("-r")
              .short ("-r")
              .long ("--recursive")
              .help ("recursively traverse <DIR>")
              .multiple (true))
        .arg (cmd::Arg::with_name ("PATH")
              .help ("\
                  <PATH> can be <FILE> or <DIR>\n\
                  ignore non unicode <PATH>\n\
                  ignore non `.md` files\n\
                  ignore `.md` files without tangle property\n\
                  ")
              .multiple (true))
        .get_matches ();
    if let Some (paths) = matches.values_of ("PATH") {
        for path_str in paths {
            let mut path = PathBuf::new ();
            path.push (path_str);
            let path = absolute_lize (&path);
            if path.is_file () {
                file_tangle (&path)?;
            } else if path.is_dir () {
                if matches.is_present ("-r") {
                    dir_tangle_rec (&path)?;
                } else {
                    dir_tangle (&path)?;
                }
            }
        }
    }
    Ok (())
}