yom 0.0.2

A modern, easy to install competitor to the dash shell, built solely to execute files.
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
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76

 #[cfg(not(unix))]
compile_error!("YOM is available on UNIX-like systems only.");

use std::io;
use std::fs::File;
use std::io::{BufRead, BufReader};
mod builtins;
mod externals;
use std::process::exit;

fn main() {
    let mut args = std::env::args_os();
    args.next();
    
let path = match args.next() {
        Some(p) => p,
        None => return,
    };
    let f = File::open(&path).unwrap();
    
    let mut reader = BufReader::new(f);

    let mut line = String::new();
    let stdout = io::stdout();
    let mut lock = stdout.lock();
    while reader.read_line(&mut line).unwrap() > 0 {
        if line.starts_with("#") {
            line.clear();
            continue;
        } else if line.starts_with("echo ") {
            let str = line.trim_start_matches("echo ");
            let str = str.trim_end_matches("\n");
            if str.starts_with('"') && str.ends_with('"') {
                let str = str.trim_start_matches('"');
                let str = str.trim_end_matches('"');
                builtins::echo::main(str, &mut lock);
            } else {
                builtins::echo::main(str, &mut lock);
            }
        } else if line == "pwd\n" {
            let _ = builtins::pwd::main(&mut lock);
        } else if line.starts_with("cd ") {
            let dir = line.trim_start_matches("cd ");
            let dir = dir.trim_end_matches("\n");
            if dir.starts_with('"') {
                let dir = dir.trim_start_matches('"');
                let dir = dir.trim_end_matches('"');
                let _ = builtins::cd::main(dir);
            } else {
                let _ = builtins::cd::main(dir);
            }
        } else if line == "exit\n" {
            let _ = builtins::exit::main(0);
        } else if line.starts_with("exit ") {
            let code: i32 = line.trim_start_matches("exit ").trim_end_matches("\n").parse().unwrap();
            let _ = builtins::exit::main(code);
//        } else if line.starts_with("if "){
            // time to do some massive brain coding
//            let op = line.trim_start_matches("if ");
//            print!("{op}");
//            let op = op.trim_start_matches("[ ").trim_end_matches(" ]");
//            print!("{op}");
            
//           let operators = ['!', '<', '=', '>'];
//           if let Some(idx) = op.find(|c: char| operators.contains(&c)) {
//                let tail = &line[idx..];
//            }
        } else if line.starts_with("/") {
            externals::entry::main(&line, &mut lock);
        } else {
            exit(1);
        }
        line.clear();
    }
    return;
}