nushell/src/commands/cd.rs

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use crate::commands::StaticCommand;
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use crate::errors::ShellError;
use crate::prelude::*;
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use std::env;
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use std::path::PathBuf;
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pub struct Cd;
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#[derive(Deserialize)]
pub struct CdArgs {
target: Option<Spanned<PathBuf>>,
}
impl StaticCommand for Cd {
fn name(&self) -> &str {
"cd"
}
fn signature(&self) -> Signature {
Signature::build("cd")
.optional("target", SyntaxType::Path)
.filter()
}
fn run(
&self,
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
args.process(registry, cd)?.run()
// cd(args, registry)
}
}
pub fn cd(CdArgs { target }: CdArgs, context: RunnableContext) -> Result<OutputStream, ShellError> {
let cwd = context.cwd().to_path_buf();
let path = match &target {
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None => match dirs::home_dir() {
Some(o) => o,
_ => {
return Err(ShellError::maybe_labeled_error(
"Can not change to home directory",
"can not go to home",
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context.name,
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))
}
},
Some(v) => {
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// let target = v.item.as_string()?;
match dunce::canonicalize(cwd.join(&v.item()).as_path()) {
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Ok(p) => p,
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Err(_) => {
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return Err(ShellError::labeled_error(
"Can not change to directory",
"directory not found",
v.span.clone(),
));
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}
}
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}
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};
let mut stream = VecDeque::new();
match env::set_current_dir(&path) {
Ok(_) => {}
Err(_) => {
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if let Some(path) = target {
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return Err(ShellError::labeled_error(
"Can not change to directory",
"directory not found",
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path.span,
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));
} else {
return Err(ShellError::string("Can not change to directory"));
}
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}
}
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stream.push_back(ReturnSuccess::change_cwd(path));
Ok(stream.into())
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}