packc/
external_tools.rs

1#![forbid(unsafe_code)]
2
3use std::env;
4use std::path::PathBuf;
5
6pub fn resolve(binary: &str) -> Option<PathBuf> {
7    if let Some(override_bin) = override_binary(binary)
8        && override_bin.exists()
9    {
10        return Some(override_bin);
11    }
12    if let Some(path_bin) = resolve_from_path(binary) {
13        return Some(path_bin);
14    }
15    if let Some(current_exe) = std::env::current_exe().ok()
16        && let Some(exe_dir) = current_exe.parent()
17    {
18        let local_bin = exe_dir.join(binary);
19        if local_bin.exists() {
20            return Some(local_bin);
21        }
22    }
23    None
24}
25
26fn override_binary(binary: &str) -> Option<PathBuf> {
27    let keys: &[&str] = match binary {
28        "greentic-flow" => &["GREENTIC_FLOW_BIN", "GREENTIC_FLOW_DEV_BIN"],
29        "greentic-component" => &["GREENTIC_COMPONENT_BIN", "GREENTIC_COMPONENT_DEV_BIN"],
30        _ => return None,
31    };
32    keys.iter()
33        .find_map(|key| env::var_os(key).map(PathBuf::from))
34}
35
36fn resolve_from_path(binary: &str) -> Option<PathBuf> {
37    let path_var = env::var_os("PATH")?;
38    for dir in env::split_paths(&path_var) {
39        let candidate = dir.join(binary);
40        if candidate.exists() {
41            return Some(candidate);
42        }
43    }
44    None
45}
packc/external_tools.rs

packc/
external_tools.rs
