50 lines
1.4 KiB
Rust
50 lines
1.4 KiB
Rust
//! Tools for spawning programs.
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use std::collections::HashMap;
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/// Sets an environment variable.
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///
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/// This does not affect the compositor itself but only programs spawned by the compositor.
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pub fn set_env(key: &str, val: &str) {
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get!().set_env(key, val);
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}
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/// A command to be spawned.
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pub struct Command {
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pub(crate) prog: String,
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pub(crate) args: Vec<String>,
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pub(crate) env: HashMap<String, String>,
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}
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impl Command {
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/// Creates a new command to be spawned.
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///
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/// `prog` should be the path to the program being spawned. If `prog` does not contain
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/// a `/`, then it will be searched in `PATH` similar to how a shell would do it.
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///
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/// The first argument passed to `prog`, `argv[0]`, is `prog` itself.
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pub fn new(prog: &str) -> Self {
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Self {
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prog: prog.to_string(),
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args: vec![],
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env: Default::default(),
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}
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}
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/// Adds an argument to be passed to the command.
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pub fn arg(&mut self, arg: &str) -> &mut Self {
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self.args.push(arg.to_string());
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self
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}
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/// Sets an environment variable for this command only.
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pub fn env(&mut self, key: &str, val: &str) -> &mut Self {
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self.env.insert(key.to_string(), val.to_string());
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self
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}
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/// Executes the command.
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pub fn spawn(&self) {
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get!().spawn(self);
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}
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}
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