//! Random and miscellaneous utils used in ouch.
//!
//! In here we have the logic for custom formatting, some file and directory utils, and user
//! stdin interaction helpers.

pub mod colors;
mod formatting;
mod fs;
mod question;

pub use formatting::{
    concatenate_os_str_list, nice_directory_display,
    strip_cur_dir, to_utf, Bytes
};
pub use fs::{
    cd_into_same_dir_as, clear_path, create_dir_if_non_existent,
    dir_is_empty, try_infer_extension
};
pub use question::{
    user_wants_to_continue_compressing, user_wants_to_continue_decompressing,
    create_or_ask_overwrite, user_wants_to_overwrite,
    QuestionPolicy
};
pub use utf8::{
    get_invalid_utf8_paths, is_invalid_utf8
};

mod utf8 {
    use std::{ffi::OsStr, path::PathBuf};

    /// Check, without allocating, if os_str can be converted into &str
    pub fn is_invalid_utf8(os_str: impl AsRef<OsStr>) -> bool {
        os_str.as_ref().to_str().is_none()
    }

    /// Filter out list of paths that are not utf8 valid
    pub fn get_invalid_utf8_paths(paths: &[PathBuf]) -> Vec<&PathBuf> {
        paths.iter().filter_map(|path| is_invalid_utf8(path).then(|| path)).collect()
    }
}