use crate::commands::WholeStreamCommand; use crate::prelude::*; use std::path::PathBuf; use nu_errors::ShellError; use nu_protocol::{Signature, SyntaxShape}; use nu_source::Tagged; #[derive(Deserialize)] pub struct CdArgs { pub(crate) path: Option>, } pub struct Cd; impl WholeStreamCommand for Cd { fn name(&self) -> &str { "cd" } fn signature(&self) -> Signature { Signature::build("cd").optional( "directory", SyntaxShape::Path, "the directory to change to", ) } fn usage(&self) -> &str { "Change to a new path." } fn run( &self, args: CommandArgs, registry: &CommandRegistry, ) -> Result { cd(args, registry) } fn examples(&self) -> &[Example] { &[ Example { description: "Change to a new directory called 'dirname'", example: "cd dirname", }, Example { description: "Change to your home directory", example: "cd", }, Example { description: "Change to your home directory (alternate version)", example: "cd ~", }, Example { description: "Change to the previous directory", example: "cd -", }, ] } } fn cd(args: CommandArgs, registry: &CommandRegistry) -> Result { let registry = registry.clone(); let stream = async_stream! { let name = args.call_info.name_tag.clone(); let shell_manager = args.shell_manager.clone(); let (args, _): (CdArgs, _) = args.process(®istry).await?; let mut result = shell_manager.cd(args, name)?; while let Some(item) = result.next().await { yield item; } }; Ok(stream.to_output_stream()) }