isahc 1.0.1

The practical HTTP client that is fun to use.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18

use std::{env, error::Error, fs, path::PathBuf};

fn main() -> Result<(), Box<dyn Error>> {
    let out_dir = PathBuf::from(env::var("OUT_DIR")?);
    fs::write(out_dir.join("features.txt"), get_feature_string())?;

    Ok(())
}

/// Generate a "feature string" for the crate features currently enabled.
fn get_feature_string() -> String {
    env::vars()
        .filter(|(name, _)| name.starts_with("CARGO_FEATURE_"))
        .filter(|(_, value)| value == "1")
        .map(|(name, _)| name.trim_start_matches("CARGO_FEATURE_").to_lowercase())
        .collect::<Vec<String>>()
        .join(",")
}