rust-i18n 3.1.5

Rust I18n is use Rust codegen for load YAML file storage translations on compile time, and give you a t! macro for simply get translation texts.
Documentation 
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// https://github.com/longbridge/rust-i18n/blob/v0.1.6/crates/support/src/lib.rs#L9
fn workdir() -> Option<String> {
    if let Ok(cargo_manifest_dir) = std::env::var("CARGO_MANIFEST_DIR") {
        return Some(cargo_manifest_dir);
    }

    let dest = std::env::var("OUT_DIR");
    if dest.is_err() {
        return None;
    }
    let dest = dest.unwrap();

    let seperator = regex::Regex::new(r"(/target/(.+?)/build/)|(\\target\\(.+?)\\build\\)")
        .expect("Invalid regex");
    let parts = seperator.split(dest.as_str()).collect::<Vec<_>>();

    if parts.len() >= 2 {
        return Some(parts[0].to_string());
    }

    None
}

fn main() {
    let workdir = workdir().unwrap_or("./".to_string());

    let locale_path = format!("{workdir}/**/locales/**/*");
    if let Ok(globs) = globwalk::glob(locale_path) {
        for entry in globs {
            if let Err(e) = entry {
                println!("cargo:i18n-error={}", e);
                continue;
            }

            let entry = entry.unwrap().into_path();
            println!("cargo:rerun-if-changed={}", entry.display());
        }
    }
}