pipe_utils 0.8.0

File manipulation and other stuff used for testing etc
Documentation 
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use fake::Fake;
use std::fs::File;
use std::io;
use std::io::Write;
use std::path::Path;

pub async fn build_random_file(path: &Path, size: usize) -> io::Result<()> {
    // using `faker` module with locales
    use fake::faker::name::raw::*;
    use fake::locales::*;

    let mut file = File::create(path)?;

    let mut str = "".to_string();
    for _i in 0..40000 {
        let _name: String = Name(EN).fake();
        str += format!(
            "{}, {}, {}",
            Name(EN).fake::<String>(),
            Name(JA_JP).fake::<String>(),
            Name(ZH_TW).fake::<String>()
        )
        .as_str();
        if str.len() > size {
            break;
        };
    }

    let mut bytes_left: i64 = size as i64;
    loop {
        if bytes_left < str.as_bytes().len() as i64 {
            bytes_left -= file.write(&str.as_bytes()[0..bytes_left as usize])? as i64;
        } else {
            bytes_left -= file.write(str.as_bytes())? as i64;
        }
        if bytes_left <= 0 {
            break;
        }
    }
    Ok(())
}