1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47

//! A very thin wrapper for command line arguments in Rust.

use std::env;

pub struct CliOptions {
    program: String,
}

impl CliOptions {

    /// Create new instance of CliOptions.
    pub fn new(program: &str) -> CliOptions {
        CliOptions {
            program: program.to_string(),
        }
    }

    /// Get any command line arguments.
    pub fn get_args(&self) -> Vec<String> {
        env::args().collect()
    }
    
    /// Get number fo command line arguments.
    pub fn get_num(&self) -> usize {
        self.get_args().clone().len()
    }

    /// Get next argument.
    pub fn next_argument(&self, i: usize) -> String {
       let a = env::args().nth(i + 1);
       let arg = match a {
            Some(a) => a,
            None => String::new()
       };
       arg
    }

    /// Get program name from first argument.
    pub fn get_program(&self) -> String {
        let a = env::args().nth(0);
        let arg = match a {
            Some(a) => a,
            None => self.program.clone()
        };
        arg
    }
}