remaining/
remaining.rs

1use qargparser as arg;
2
3#[derive(Default, Debug)]
4struct MyContext {
5  do_help: bool,
6  exec: String,
7  eargs: Vec<String>
8}
9
10fn help_proc(
11  _spec: &arg::Spec<MyContext>,
12  ctx: &mut MyContext,
13  _args: &Vec<String>
14) {
15  ctx.do_help = true;
16}
17
18fn exec_proc(
19  _spec: &arg::Spec<MyContext>,
20  ctx: &mut MyContext,
21  args: &Vec<String>
22) {
23  ctx.exec = args[0].clone();
24}
25
26fn eargs_proc(
27  _spec: &arg::Spec<MyContext>,
28  ctx: &mut MyContext,
29  args: &Vec<String>
30) {
31  for arg in args {
32    ctx.eargs.push(arg.clone());
33  }
34}
35
36
37fn main() -> Result<(), Box<dyn std::error::Error>> {
38  let help_spec = arg::Builder::new()
39    .sopt('h')
40    .lopt("help")
41    .exit(true)
42    .help(&["Show this help."])
43    .build(help_proc);
44  let exec_spec = arg::Builder::new()
45    .name("exec")
46    .nargs(arg::Nargs::Count(1), &["PRG"])
47    .help(&["The executable to run."])
48    .build(exec_proc);
49  let eargs_spec = arg::Builder::new()
50    .name("execargs")
51    .nargs(arg::Nargs::Remainder, &["PRGARG"])
52    .help(&["arguments to pass to the executable."])
53    .build(eargs_proc);
54
55  let ctx = MyContext {
56    ..Default::default()
57  };
58  let mut prsr = arg::Parser::from_env(ctx);
59
60  prsr.add(help_spec)?;
61  prsr.add(exec_spec)?;
62  prsr.add(eargs_spec)?;
63
64  prsr.parse()?;
65
66  if prsr.get_ctx().do_help == true {
67    prsr.usage(&mut std::io::stdout());
68    std::process::exit(0);
69  }
70
71  let ctx = prsr.into_ctx();
72
73  println!("{:?}", &ctx);
74
75  Ok(())
76}
77
78/* vim: set ft=rust et sw=2 ts=2 sts=2 cinoptions=2 tw=79 : */
remaining/remaining.rs

remaining/
remaining.rs
