mv std libs to library/

src/libstd/sys_common/process.rs

@@ -1,95 +0,0 @@
-#![allow(dead_code)]
-#![unstable(feature = "process_internals", issue = "none")]
-
-use crate::collections::BTreeMap;
-use crate::env;
-use crate::ffi::{OsStr, OsString};
-use crate::sys::process::EnvKey;
-
-// Stores a set of changes to an environment
-#[derive(Clone, Debug)]
-pub struct CommandEnv {
-    clear: bool,
-    saw_path: bool,
-    vars: BTreeMap<EnvKey, Option<OsString>>,
-}
-
-impl Default for CommandEnv {
-    fn default() -> Self {
-        CommandEnv { clear: false, saw_path: false, vars: Default::default() }
-    }
-}
-
-impl CommandEnv {
-    // Capture the current environment with these changes applied
-    pub fn capture(&self) -> BTreeMap<EnvKey, OsString> {
-        let mut result = BTreeMap::<EnvKey, OsString>::new();
-        if !self.clear {
-            for (k, v) in env::vars_os() {
-                result.insert(k.into(), v);
-            }
-        }
-        for (k, maybe_v) in &self.vars {
-            if let &Some(ref v) = maybe_v {
-                result.insert(k.clone(), v.clone());
-            } else {
-                result.remove(k);
-            }
-        }
-        result
-    }
-
-    // Apply these changes directly to the current environment
-    pub fn apply(&self) {
-        if self.clear {
-            for (k, _) in env::vars_os() {
-                env::remove_var(k);
-            }
-        }
-        for (key, maybe_val) in self.vars.iter() {
-            if let Some(ref val) = maybe_val {
-                env::set_var(key, val);
-            } else {
-                env::remove_var(key);
-            }
-        }
-    }
-
-    pub fn is_unchanged(&self) -> bool {
-        !self.clear && self.vars.is_empty()
-    }
-
-    pub fn capture_if_changed(&self) -> Option<BTreeMap<EnvKey, OsString>> {
-        if self.is_unchanged() { None } else { Some(self.capture()) }
-    }
-
-    // The following functions build up changes
-    pub fn set(&mut self, key: &OsStr, value: &OsStr) {
-        self.maybe_saw_path(&key);
-        self.vars.insert(key.to_owned().into(), Some(value.to_owned()));
-    }
-
-    pub fn remove(&mut self, key: &OsStr) {
-        self.maybe_saw_path(&key);
-        if self.clear {
-            self.vars.remove(key);
-        } else {
-            self.vars.insert(key.to_owned().into(), None);
-        }
-    }
-
-    pub fn clear(&mut self) {
-        self.clear = true;
-        self.vars.clear();
-    }
-
-    pub fn have_changed_path(&self) -> bool {
-        self.saw_path || self.clear
-    }
-
-    fn maybe_saw_path(&mut self, key: &OsStr) {
-        if !self.saw_path && key == "PATH" {
-            self.saw_path = true;
-        }
-    }
-}