Function holochain::conductor::interactive::ask_yn

pub fn ask_yn(prompt: String, default_yes: Option<bool>) -> Result<bool>

Prompt the user to answer Y or N.

prompt will be printed as the question to answer. if default_yes is Some(true), entering a blank line equates to Y if default_yes is Some(false), entering a blank line equates to N if default_yes is None, Y or N must be explicitly entered, anything else is invalid

Returns true for Y, false for N

Examples found in repository

src/conductor/interactive.rs (line 52)

pub fn prompt_for_database_dir(path: &Path) -> std::io::Result<()> {
    let prompt = format!(
        "There is no database at the path specified ({})\nWould you like to create one now?",
        path.display()
    );
    if ask_yn(prompt, Some(true))? {
        std::fs::create_dir_all(path)?;
        Ok(())
    } else {
        Err(std::io::Error::new(
            std::io::ErrorKind::Other,
            "Cannot continue without database.",
        ))
    }
}

/// If config_path is Some, attempt to load the config from that path, and return error if file not found
/// If config_path is None, attempt to load config from default path, and offer to create config if file not found
pub fn load_config_or_prompt_for_default(
    config_path: ConfigFilePath,
) -> ConductorResult<Option<ConductorConfig>> {
    ConductorConfig::load_yaml(config_path.as_ref()).map(Some).or_else(|err| {
        if let ConductorConfigError::ConfigMissing(_) = err {
            let prompt = format!(
                "There is no conductor config YAML file at the path specified ({})\nWould you like to create a default config file at this location?",
                config_path
            );
            if ask_yn(prompt, Some(true))? {
                let config = save_default_config_yaml(config_path.as_ref())?;
                println!("Conductor config written.");
                Ok(Some(config))
            } else {
                Ok(None)
            }
        } else {
            Err(err.into())
        }
    })
}