avsser 0.6.4

extern crate avsser;
extern crate getopts;

use getopts::Options;
use std::env;
use std::path::Path;
use std::path::PathBuf;
use avsser::generic::input::get_list_of_files;
use avsser::generic::input::determine_input_type;
use avsser::generic::output::create_avs_script;
use avsser::generic::output::AvsOptions;
use avsser::generic::output::extract_fonts;

fn print_usage(program: &str, opts: Options) {
    let brief = format!("Usage: {} [options] INPUT", program);
    print!("{}", opts.usage(&brief));
}

fn resize_opt_into_dimensions(pair: &str) -> (u32, u32) {
    let items: Vec<&str> = pair.split(',').collect();
    if items.len() != 2 {
        panic!("Expected exactly 2 arguments (comma-separated) for 'resize'");
    }

    (items[0].parse().expect("Invalid width supplied to resizer"),
     items[1].parse().expect("Invalid height supplied to resizer"))
}

fn main() {
    let program = env::args().next().unwrap();
    let args: Vec<String> = env::args().skip(1).collect();

    let mut opts = Options::new();
    opts.optflag("h", "help", "print this help menu");
    opts.optflag("s",
                 "subtitle",
                 "include subtitles with TextSub(input_filename.ass)");
    opts.optflag("S",
                 "sub-extract",
                 "extract subtitles from the input files (defaults to track 0)");
    opts.optopt("T",
                "sub-track",
                "select which subtitle track to extract, 0-indexed (does nothing without -S)",
                "TRACK");
    opts.optflag("a", "audio", "include audio from video");
    opts.optopt("A",
                "audio-ext",
                "include audio from separate file with extension (takes precedence over audio \
                 from video)",
                "EXT");
    opts.optflag("f", "fonts", "extract fonts from mkv container");
    opts.optopt("R",
                "resize",
                "resize video to the given width and height",
                "w,h");
    opts.optflag("G", "keep-grain", "don't add a RemoveGrain(1) filter");

    let matches = match opts.parse(&args) {
        Ok(m) => m,
        Err(f) => panic!(f.to_string()),
    };
    if matches.opt_present("h") {
        print_usage(&program, opts);
        return;
    }
    let input = if matches.free.is_empty() {
        print_usage(&program, opts);
        return;
    } else {
        matches.free[0].clone()
    };

    let input = get_list_of_files(Path::new(&input), false).unwrap();
    for file in input {
        if determine_input_type(file.as_ref()).is_none() {
            continue;
        }
        let path = PathBuf::from(file);
        if matches.opt_present("f") {
            extract_fonts(path.as_ref()).unwrap();
        }
        create_avs_script(path.as_ref(),
                          path.with_extension("avs").as_ref(),
                          AvsOptions {
                              remove_grain: if matches.opt_present("G") {
                                  None
                              } else {
                                  Some(1)
                              },
                              ass: matches.opt_present("s"),
                              ass_extract: if matches.opt_present("S") {
                                  if let Some(track) = matches.opt_str("T") {
                                      Some(track.parse().expect("No argument supplied for track"))
                                  } else {
                                      Some(0)
                                  }
                              } else {
                                  None
                              },
                              audio: (matches.opt_present("a"), matches.opt_str("A")),
                              resize: if matches.opt_present("R") {
                                  Some(resize_opt_into_dimensions(matches.opt_str("R")
                                      .expect("No argument supplied for resize")
                                      .as_ref()))
                              } else {
                                  None
                              },
                          })
            .unwrap();
    }
}