localizer 0.3.5

Simple library for localization.
Documentation 
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#![cfg(feature = "std")]

use std::fs::File;
#[derive(Debug)]
#[allow(non_camel_case_types)]
pub enum res_keeper {
    file(File),
    string(String),
    None,
}
impl res_keeper {
    pub fn new_file(res: Option<File>) -> Self {
        match res {
            Some(file) => Self::file(file),
            None => Self::None,
        }
    }
    pub fn new_file_from_path(res: Option<&std::path::Path>) -> Self {
        use crate::constants::STD_PATH;
        use std::fs::OpenOptions;
        let file = OpenOptions::new().read(true).open(match res {
            Some(path) => path.to_str().unwrap_or(STD_PATH),
            None => STD_PATH,
        });
        Self::new_file(file.ok())
    }
    pub fn new_string(res: Option<String>) -> Self {
        match res {
            Some(string) => Self::string(string),
            None => Self::None,
        }
    }

    pub fn set_file(&mut self, res: Option<File>) {
        match res {
            Some(file) => {
                *self = Self::file(file);
            }
            None => {
                *self = Self::None;
            }
        }
    }
    pub fn set_file_from_path(&mut self, path: Option<&std::path::Path>) {
        use crate::constants::STD_PATH;
        use std::fs::OpenOptions;
        let file = OpenOptions::new().read(true).open(match path {
            Some(path) => path.to_str().unwrap_or(STD_PATH),
            None => STD_PATH,
        });
        self.set_file(file.ok());
    }
    pub fn set_string(&mut self, res: Option<String>) {
        match res {
            Some(string) => {
                *self = Self::string(string);
            }
            None => {
                *self = Self::None;
            }
        }
    }

    pub fn get_file(self) -> Option<File> {
        match self {
            Self::file(file) => Some(file),
            _ => None,
        }
    }
    pub fn get_string(self) -> Option<String> {
        match self {
            Self::string(string) => Some(string),
            _ => None,
        }
    }
    pub fn is_file(&self) -> bool {
        matches!(self, Self::file(_))
        /*match self {
            Self::file(_) => true,
            _ => false,
        }*/
    }
    pub fn is_string(&self) -> bool {
        matches!(self, Self::string(_))
        /*match self {
            Self::string(_) => true,
            _ => false,
        }*/
    }
}

impl Default for res_keeper {
    fn default() -> Self {
        Self::None
    }
}

impl From<Option<File>> for res_keeper {
    fn from(item: Option<File>) -> Self {
        match item {
            Some(file) => res_keeper::file(file),
            None => res_keeper::None,
        }
    }
}
impl From<Option<String>> for res_keeper {
    fn from(item: Option<String>) -> Self {
        match item {
            Some(string) => res_keeper::string(string),
            None => res_keeper::None,
        }
    }
}

impl From<Option<res_keeper>> for res_keeper {
    fn from(item: Option<res_keeper>) -> Self {
        match item {
            Some(res) => res,
            None => res_keeper::None,
        }
    }
}

impl crate::traits::Res for res_keeper {
    fn get_state(&self) -> &str {
        match self {
            Self::file(_) => "file",
            Self::string(_) => "string",
            Self::None => "None",
        }
    }

    fn stringify(&mut self) -> Option<()> {//Result<(), dyn LocError + 'static > {//
        use std::io::{BufReader, Read};
        match self {
            Self::string(_) => Some(()),
            Self::file(file) => {
                let mut buf_reader = BufReader::new(file);
                let mut string = String::new();
                buf_reader.read_to_string(&mut string).ok()?; //.unwrap();//
                *self = Self::string(string);
                Some(())
            }
            Self::None => None,
        }
    }
    fn get_string(self) -> Option<String> {
        use std::io::{BufReader, Read};
        match self {
            Self::string(string) => Some(string),
            Self::file(file) => {
                let mut buf_reader = BufReader::new(file);
                let mut string = String::new();
                buf_reader.read_to_string(&mut string).ok()?; //.unwrap();//
                Some(string)
            }
            Self::None => None,
        }
    }
    fn from_string(res: Option<String>) -> Self {
        Self::new_string(res)
    }
    fn from_str(res: Option<&str>) -> Self {
        Self::new_string(res.map(|res| res.to_string()))
    }
    fn set_string(&mut self, res: Option<String>) {
        self.set_string(res);
    }

    fn user(mut self, f: &dyn Fn(&mut Self)) -> Self {
        f(&mut self);
        self
    }

    fn get_str(&self) -> Option<&str> {
        match self {
            Self::string(ref string) => Some(string),
            _ => None,
        }
    }
}