1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45
// -*- coding: utf-8 -*- // vi: set sts=4 ts=4 sw=4 et ft=rust: // // ## 名前の由来 // varsun=VARiable SUbstitioN という適当な造語です。 // // ## 読み方 // `ヴァルサン` または `バルサン` です。 // > 虫退治のアレと同じ読み方か // //! Shell-like variable substition functions. //! //! Basic usages are: //! //! - Simple templating. //! - Expand envrionment variables. //! pub mod posix; pub mod mswin; /// Parse src string and replace found variables with `mapfn` result. /// /// This function is an proxy function. Call `substitute` function in `mswin` module if platform is /// windows, otherwise call `posix` implemntation. pub fn substitute<F>(src: &str, mapfn: F) -> String where F: Fn(&str) -> Option<String> { if cfg!(windows) { return self::mswin::substitute(src, mapfn); } else { return self::posix::substitute(src, mapfn); } } /// Parse src string and replace variables with Environment Variable. pub fn substenvar(src: &str) -> String { return self::substitute(src, self::envar); } fn envar(name: &str) -> Option<String> { match ::std::env::var(name) { Ok(val) => Some(val), Err(_) => None, } }