forked from extern/nushell
6a0f404558
* Proof of concept treating env vars as Values * Refactor env var collection and method name * Remove unnecessary pub * Move env translations into a new file * Fix LS_COLORS to support any Value * Fix spans during env var translation * Add span to env var in cd * Improve error diagnostics * Fix non-string env vars failing string conversion * Make PROMPT_COMMAND a Block instead of String * Record host env vars to a fake file This will give spans to env vars that would otherwise be without one. Makes errors less confusing. * Add 'env' command to list env vars It will list also their values translated to strings * Sort env command by name; Add env var type * Remove obsolete test
51 lines
1.6 KiB
Rust
51 lines
1.6 KiB
Rust
use nu_engine::CallExt;
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use nu_protocol::ast::Call;
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use nu_protocol::engine::{Command, EngineState, Stack};
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use nu_protocol::{Category, PipelineData, Signature, SyntaxShape, Value};
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#[derive(Clone)]
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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")
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.optional("path", SyntaxShape::Filepath, "the path to change to")
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.category(Category::FileSystem)
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}
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fn run(
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&self,
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engine_state: &EngineState,
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stack: &mut Stack,
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call: &Call,
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_input: PipelineData,
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) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
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let path_val: Option<Value> = call.opt(engine_state, stack, 0)?;
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let (path, span) = match path_val {
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Some(v) => {
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let path = nu_path::expand_path(v.as_string()?);
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(path.to_string_lossy().to_string(), v.span()?)
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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(), call.head)
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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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stack.add_env_var("PWD".into(), Value::String { val: path, span });
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Ok(PipelineData::new(call.head))
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}
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}
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