forked from extern/nushell
230 lines
7.7 KiB
Rust
230 lines
7.7 KiB
Rust
use crate::prelude::*;
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use indexmap::IndexMap;
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use nu_engine::WholeStreamCommand;
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use nu_errors::ShellError;
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use nu_protocol::{Dictionary, Signature, UntaggedValue, Value};
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pub struct Lang;
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impl WholeStreamCommand for Lang {
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fn name(&self) -> &str {
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"lang"
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}
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fn signature(&self) -> Signature {
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Signature::build("lang")
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}
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fn usage(&self) -> &str {
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"Returns the nushell-lang information"
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}
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fn run(&self, args: CommandArgs) -> Result<OutputStream, ShellError> {
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let tag = args.call_info.name_tag.clone();
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let full_commands = args.context.scope.get_commands_info();
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let mut cmd_vec_deque = VecDeque::new();
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for (key, cmd) in full_commands {
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let mut indexmap = IndexMap::new();
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let mut sig = cmd.signature();
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// eprintln!("{}", get_signature(&sig));
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indexmap.insert(
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"name".to_string(),
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UntaggedValue::string(key).into_value(&tag),
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);
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indexmap.insert(
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"usage".to_string(),
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UntaggedValue::string(cmd.usage().to_string()).into_value(&tag),
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);
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// let sig_deser = serde_json::to_string(&sig).unwrap();
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// indexmap.insert(
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// "signature".to_string(),
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// UntaggedValue::string(sig_deser).into_value(&tag),
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// );
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let signature_table = get_signature(&mut sig, tag.clone());
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indexmap.insert(
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"signature".to_string(),
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UntaggedValue::Table(signature_table).into_value(&tag),
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);
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indexmap.insert(
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"is_filter".to_string(),
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UntaggedValue::boolean(sig.is_filter).into_value(&tag),
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);
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indexmap.insert(
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"is_builtin".to_string(),
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UntaggedValue::boolean(cmd.is_builtin()).into_value(&tag),
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);
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indexmap.insert(
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"is_sub".to_string(),
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UntaggedValue::boolean(cmd.is_sub()).into_value(&tag),
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);
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indexmap.insert(
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"is_plugin".to_string(),
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UntaggedValue::boolean(cmd.is_plugin()).into_value(&tag),
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);
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indexmap.insert(
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"is_custom".to_string(),
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UntaggedValue::boolean(cmd.is_custom()).into_value(&tag),
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);
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indexmap.insert(
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"is_private".to_string(),
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UntaggedValue::boolean(cmd.is_private()).into_value(&tag),
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);
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indexmap.insert(
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"is_binary".to_string(),
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UntaggedValue::boolean(cmd.is_binary()).into_value(&tag),
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);
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indexmap.insert(
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"extra_usage".to_string(),
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UntaggedValue::string(cmd.extra_usage().to_string()).into_value(&tag),
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);
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cmd_vec_deque
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.push_back(UntaggedValue::Row(Dictionary::from(indexmap)).into_value(&tag));
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}
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Ok(cmd_vec_deque.into_iter().into_output_stream())
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}
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fn examples(&self) -> Vec<Example> {
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vec![Example {
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description: "Query command information from Nushell",
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example: "lang",
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result: None,
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}]
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}
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}
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fn get_signature(sig: &mut Signature, tag: Tag) -> Vec<Value> {
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sig.remove_named("help");
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let p = &sig.positional;
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let r = &sig.rest_positional;
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let n = &sig.named;
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let name = &sig.name;
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let mut sig_vec: Vec<Value> = Vec::new();
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for item in p {
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let mut indexmap = IndexMap::new();
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let (parameter, syntax_shape) = item.0.get_type_description();
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let description = &item.1;
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// let output = format!(
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// "Positional|{}|{}|{}|{}\n",
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// name, parameter, syntax_shape, description
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// );
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// eprintln!("{}", output);
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indexmap.insert(
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"cmd_name".to_string(),
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UntaggedValue::string(name).into_value(&tag),
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);
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indexmap.insert(
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"parameter_name".to_string(),
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UntaggedValue::string(parameter).into_value(&tag),
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);
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indexmap.insert(
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"parameter_type".to_string(),
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UntaggedValue::string("positional".to_string()).into_value(&tag),
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);
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indexmap.insert(
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"syntax_shape".to_string(),
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UntaggedValue::string(syntax_shape).into_value(&tag),
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);
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indexmap.insert(
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"description".to_string(),
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UntaggedValue::string(description).into_value(&tag),
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);
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indexmap.insert(
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"flag_name".to_string(),
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UntaggedValue::string("".to_string()).into_value(&tag),
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);
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indexmap.insert(
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"flag_type".to_string(),
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UntaggedValue::string("".to_string()).into_value(&tag),
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);
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sig_vec.push(UntaggedValue::Row(Dictionary::from(indexmap)).into_value(&tag));
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}
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match r {
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Some((shape, desc)) => {
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let mut indexmap = IndexMap::new();
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// let output = format!("Rest|{}|{}|{}\n", name, shape.syntax_shape_name(), desc);
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// eprintln!("{}", output);
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indexmap.insert(
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"cmd_name".to_string(),
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UntaggedValue::string(name).into_value(&tag),
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);
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indexmap.insert(
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"parameter_name".to_string(),
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UntaggedValue::string("".to_string()).into_value(&tag),
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);
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indexmap.insert(
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"parameter_type".to_string(),
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UntaggedValue::string("rest".to_string()).into_value(&tag),
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);
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indexmap.insert(
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"syntax_shape".to_string(),
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UntaggedValue::string(shape.syntax_shape_name()).into_value(&tag),
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);
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indexmap.insert(
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"description".to_string(),
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UntaggedValue::string(desc).into_value(&tag),
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);
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indexmap.insert(
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"flag_name".to_string(),
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UntaggedValue::string("".to_string()).into_value(&tag),
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);
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indexmap.insert(
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"flag_type".to_string(),
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UntaggedValue::string("".to_string()).into_value(&tag),
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);
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sig_vec.push(UntaggedValue::Row(Dictionary::from(indexmap)).into_value(&tag));
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}
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None => {}
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}
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for (parameter, (b, description)) in n {
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let mut indexmap = IndexMap::new();
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let (named_type, flag_name, shape) = b.get_type_description();
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// let output = format!(
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// "Named|{}|{}|{}|{}|{}|{}\n",
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// name, parameter, named_type, flag_name, shape, description
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// );
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// eprint!("{}", output);
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indexmap.insert(
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"cmd_name".to_string(),
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UntaggedValue::string(name).into_value(&tag),
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);
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indexmap.insert(
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"parameter_name".to_string(),
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UntaggedValue::string(parameter).into_value(&tag),
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);
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indexmap.insert(
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"parameter_type".to_string(),
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UntaggedValue::string("named".to_string()).into_value(&tag),
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);
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indexmap.insert(
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"syntax_shape".to_string(),
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UntaggedValue::string(shape).into_value(&tag),
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);
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indexmap.insert(
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"description".to_string(),
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UntaggedValue::string(description).into_value(&tag),
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);
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indexmap.insert(
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"flag_name".to_string(),
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UntaggedValue::string(flag_name).into_value(&tag),
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);
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indexmap.insert(
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"flag_type".to_string(),
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UntaggedValue::string(named_type).into_value(&tag),
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);
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sig_vec.push(UntaggedValue::Row(Dictionary::from(indexmap)).into_value(&tag));
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}
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sig_vec
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}
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