use argparse

Cargo.toml

@@ -12,6 +12,7 @@ edition = "2018"
 publish = false
 
 [dependencies]
+argparse      = "0.2"
 bitflags      = "1.0"
 failure       = "0.1"
 generic-array = "0.12"

src/main.rs

@@ -1,6 +1,6 @@
 use maraiah::{durandal::{bin::*, chunk::*, err::*, image::*, text::*},
               marathon::{machdr, map, pict, shp, term, wad}};
-use std::{env, fs,
+use std::{fs,
           io::{self, Write}};
 
 fn write_chunk(cid: &Ident, cnk: &[u8], eid: u16) -> ResultS<()>
@@ -101,9 +101,24 @@ fn process_shp(b: &[u8]) -> ResultS<()>
 
 fn main() -> ResultS<()>
 {
+   use argparse::*;
    use memmap::Mmap;
 
-   for arg in env::args().skip(1) {
+   let mut args: Vec<String> = Vec::new();
+   {
+      let mut ap = ArgumentParser::new();
+      ap.set_description(env!("CARGO_PKG_DESCRIPTION"));
+      ap.add_option(&["-v", "--version"],
+                    Print(format!("{} {}",
+                                  env!("CARGO_PKG_NAME"),
+                                  env!("CARGO_PKG_VERSION"))),
+                    "Show the version");
+      ap.refer(&mut args)
+        .add_argument("inputs", List, "Input files");
+      ap.parse_args_or_exit();
+   }
+
+   for arg in &args {
       let (typ, fna) = if let Some(st) = arg.find(':') {
          arg.split_at(st + 1)
       } else {

src/marathon/map.rs

@@ -1,4 +1,5 @@
-use crate::{durandal::{bin::*, chunk::*, err::*, fx32::*, text::mac_roman_conv},
+use crate::{durandal::{bin::*, chunk::*, err::*, fx32::*,
+                       text::mac_roman_conv},
             marathon::xfer::TransferMode};
 use bitflags::bitflags;
 use std::fmt;