bvm 0.0.20

Proof of concept
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

use dprint_cli_core::types::ErrBox;
use std::path::PathBuf;

use crate::environment::Environment;
use crate::types::CommandName;

pub fn get_path_executable_path(
    environment: &impl Environment,
    command_name: &CommandName,
) -> Result<Option<PathBuf>, ErrBox> {
    let shim_dir = super::get_shim_dir(environment)?;
    let command_name = command_name.as_str().to_lowercase();
    let executable_file_names = get_executable_file_names(&command_name);

    for path_dir in environment.get_system_path_dirs() {
        if path_dir == shim_dir {
            continue;
        }
        for executable_file_name in executable_file_names.iter() {
            let final_path = path_dir.join(executable_file_name);
            if environment.path_exists(&final_path) {
                return Ok(Some(final_path));
            }
        }
    }

    Ok(None)
}

fn get_executable_file_names(command_name: &str) -> Vec<String> {
    // this is probably not exactly correct :)
    let mut results = Vec::new();

    #[cfg(unix)]
    {
        results.push(command_name.to_string());
        results.push(format!("{}.sh", command_name));
    }
    #[cfg(target_os = "windows")]
    {
        results.push(format!("{}.bat", command_name));
        results.push(format!("{}.exe", command_name));
        results.push(format!("{}.cmd", command_name));
    }

    results
}