diff options
Diffstat (limited to 'src/libstd')
| -rw-r--r-- | src/libstd/process.rs | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/src/libstd/process.rs b/src/libstd/process.rs index aa76b792535..5af4ba53bf9 100644 --- a/src/libstd/process.rs +++ b/src/libstd/process.rs @@ -352,7 +352,9 @@ impl Command { /// .expect("ls command failed to start"); /// ``` #[stable(feature = "process", since = "1.0.0")] - pub fn args<S: AsRef<OsStr>>(&mut self, args: &[S]) -> &mut Command { + pub fn args<I, S>(&mut self, args: I) -> &mut Command + where I: IntoIterator<Item=S>, S: AsRef<OsStr> + { for arg in args { self.arg(arg.as_ref()); } @@ -384,6 +386,39 @@ impl Command { self } + /// Add or update multiple environment variable mappings. + /// + /// # Examples + /// + /// Basic usage: + /// ```no_run + /// use std::process::{Command, Stdio}; + /// use std::env; + /// use std::collections::HashMap; + /// + /// let filtered_env : HashMap<String, String> = + /// env::vars().filter(|&(ref k, _)| + /// k == "TERM" || k == "TZ" || k == "LANG" || k == "PATH" + /// ).collect(); + /// + /// Command::new("printenv") + /// .stdin(Stdio::null()) + /// .stdout(Stdio::inherit()) + /// .env_clear() + /// .envs(&filtered_env) + /// .spawn() + /// .expect("printenv failed to start"); + /// ``` + #[unstable(feature = "command_envs", issue = "38526")] + pub fn envs<I, K, V>(&mut self, vars: I) -> &mut Command + where I: IntoIterator<Item=(K, V)>, K: AsRef<OsStr>, V: AsRef<OsStr> + { + for (ref key, ref val) in vars { + self.inner.env(key.as_ref(), val.as_ref()); + } + self + } + /// Removes an environment variable mapping. /// /// # Examples |