serbzip 0.10.0

A quasi-lossless Balkanoidal meta-lingual compressor.
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//! Utility for downloading files over HTTP(S).

use std::fs::{create_dir_all, File};
use std::io;
use std::path::Path;
use reqwest::StatusCode;

pub enum DownloadToFileError {
    Io(io::Error),
    Http(reqwest::Error),
    StatusNotOk(u16)
}

impl From<io::Error> for DownloadToFileError {
    fn from(error: io::Error) -> Self {
        Self::Io(error)
    }
}

impl From<reqwest::Error> for DownloadToFileError {
    fn from(error: reqwest::Error) -> Self {
        Self::Http(error)
    }
}

fn create_parent_dirs(path: &impl AsRef<Path>) -> Result<(), io::Error> {
    let path = path.as_ref();
    create_dir_all(path.parent().unwrap())?;
    Ok(())
}

pub fn download_to_file(url: &str, path: impl AsRef<Path>) -> Result<(), DownloadToFileError> {
    let resp = reqwest::blocking::get(url)?;
    match resp.status() {
        StatusCode::OK => {
            let body = resp.bytes()?;
            let mut body_bytes = &body[..];
            create_parent_dirs(&path)?;
            let mut out = File::create(path)?;
            io::copy(&mut body_bytes, &mut out)?;
            Ok(())
        },
        _ => Err(DownloadToFileError::StatusNotOk(resp.status().as_u16()))
    }
}