mirror of
https://github.com/nushell/nushell
synced 2025-01-08 19:29:08 +00:00
47 lines
1.3 KiB
Rust
47 lines
1.3 KiB
Rust
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use nu_engine::CallExt;
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use nu_protocol::ast::Call;
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use nu_protocol::engine::{Command, EvaluationContext};
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use nu_protocol::{Signature, SyntaxShape, Value};
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pub struct Cd;
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impl Command for Cd {
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fn name(&self) -> &str {
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"cd"
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}
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fn usage(&self) -> &str {
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"Change directory."
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}
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fn signature(&self) -> nu_protocol::Signature {
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Signature::build("cd").optional("path", SyntaxShape::FilePath, "the path to change to")
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}
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fn run(
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&self,
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context: &EvaluationContext,
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call: &Call,
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_input: Value,
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) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
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let path: Option<String> = call.opt(context, 0)?;
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let path = match path {
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Some(path) => {
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let path = nu_path::expand_tilde(path);
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path.to_string_lossy().to_string()
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}
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None => {
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let path = nu_path::expand_tilde("~");
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path.to_string_lossy().to_string()
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}
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};
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let _ = std::env::set_current_dir(&path);
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//FIXME: this only changes the current scope, but instead this environment variable
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//should probably be a block that loads the information from the state in the overlay
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context.add_env_var("PWD".into(), path);
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Ok(Value::Nothing { span: call.head })
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}
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}
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