diff options
Diffstat (limited to 'src/libstd/sys_common/process.rs')
| -rw-r--r-- | src/libstd/sys_common/process.rs | 95 |
1 files changed, 0 insertions, 95 deletions
diff --git a/src/libstd/sys_common/process.rs b/src/libstd/sys_common/process.rs deleted file mode 100644 index f3a2962098b..00000000000 --- a/src/libstd/sys_common/process.rs +++ /dev/null @@ -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; - } - } -} |
