Function install_single_hook

atomic-cli/src/commands/git/hooks.rs:141–179

Install a single hook. Returns Ok(true) if newly installed, Ok(false) if already present.

(path: &Path, _name: &str)

/// Install a single hook. Returns Ok(true) if newly installed, Ok(false) if already present.
fn install_single_hook(path: &Path, _name: &str) -> Result<bool, std::io::Error> {
    let existing = if path.exists() {
        fs::read_to_string(path)?
    } else {
        String::new()
    };

    // Already installed?
    if existing.contains(MARKER_BEGIN) {
        return Ok(false);
    }

    // Build the section to append (body depends on which hook this is).
    let section = format!(
        "\n{}\n{}\n{}\n",
        MARKER_BEGIN,
        body_for_hook(_name),
        MARKER_END
    );

    let new_content = if existing.is_empty() {
        format!("#!/bin/sh\n{}", section)
    } else {
        format!("{}{}", existing.trim_end(), section)
    };

    fs::write(path, &new_content)?;

    // Make executable (unix only)
    #[cfg(unix)]
    {
        use std::os::unix::fs::PermissionsExt;
        let mut perms = fs::metadata(path)?.permissions();
        perms.set_mode(0o755);
        fs::set_permissions(path, perms)?;
    }

    Ok(true)
}

/// Remove Atomic sections from all hooks.
fn uninstall_hooks() -> CliResult<()> {