file_endec 1.0.1

Secure file encryption and decryption from the command line.
Documentation 
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use ::std::fmt;
use ::std::io;

pub type FedResult<T> = Result<T, String>;

/// Change IO error into FedResult error.
pub fn wrap_io<T, S: AsRef<str>>(base_msg: impl FnOnce() -> S, res: io::Result<T>) -> FedResult<T> {
    match res {
        Ok(val) => FedResult::Ok(val),
        Err(val) => FedResult::Err(format!("{}: {}", base_msg().as_ref(), val)),
    }
}

/// Push error message at end of string if verbose logging is enabled.
pub fn add_err(msg: impl Into<String>, verbose: bool, err: impl fmt::Debug) -> String {
    let mut msg = msg.into();
    if verbose {
        msg.push_str("; details: ");
        msg.push_str(&format!("{:?}", err));
    }
    msg
}