Function discover_tool_path

src/main.rs:3845–3881

Search for a binary in common paths and return full path if found

(binary: &str)

/// Search for a binary in common paths and return full path if found
fn discover_tool_path(binary: &str) -> Option<PathBuf> {
    // First try the current PATH via `which`
    if let Ok(output) = std::process::Command::new("which")
        .arg(binary)
        .output()
    {
        if output.status.success() {
            let path_str = String::from_utf8_lossy(&output.stdout).trim().to_string();
            if !path_str.is_empty() {
                return Some(PathBuf::from(path_str));
            }
        }
    }

    // Search common paths
    for dir in get_common_tool_paths() {
        let candidate = dir.join(binary);
        if candidate.exists() && candidate.is_file() {
            // Verify it's executable
            #[cfg(unix)]
            {
                use std::os::unix::fs::PermissionsExt;
                if let Ok(metadata) = std::fs::metadata(&candidate) {
                    if metadata.permissions().mode() & 0o111 != 0 {
                        return Some(candidate);
                    }
                }
            }
            #[cfg(not(unix))]
            {
                return Some(candidate);
            }
        }
    }

    None
}

/// Auto-discover all tools and add their directories to PATH
/// Returns a map of tool binary -> full path for discovered tools