nushell/src/commands/shells.rs

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Rust
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use crate::commands::WholeStreamCommand;
use crate::data::TaggedDictBuilder;
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use crate::errors::ShellError;
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use crate::prelude::*;
pub struct Shells;
impl WholeStreamCommand for Shells {
fn name(&self) -> &str {
"shells"
}
fn signature(&self) -> Signature {
Signature::build("shells")
}
fn usage(&self) -> &str {
"Display the list of current shells."
}
fn run(
&self,
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
shells(args, registry)
}
}
fn shells(args: CommandArgs, _registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
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let mut shells_out = VecDeque::new();
let tag = args.call_info.name_tag;
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for (index, shell) in args.shell_manager.shells.lock().unwrap().iter().enumerate() {
let mut dict = TaggedDictBuilder::new(tag);
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if index == args.shell_manager.current_shell {
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dict.insert(" ", "X".to_string());
} else {
dict.insert(" ", " ".to_string());
}
dict.insert("name", shell.name(&args.call_info.source_map));
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dict.insert("path", shell.path());
shells_out.push_back(dict.into_tagged_value());
}
Ok(shells_out.to_output_stream())
}