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use crate::call_info::UnevaluatedCallInfo;
use crate::command_args::RawCommandArgs;
use crate::evaluation_context::EvaluationContext;
use crate::filesystem::filesystem_shell::FilesystemShell;
use crate::shell::help_shell::HelpShell;
use crate::shell::value_shell::ValueShell;
use futures::StreamExt;
use log::{log_enabled, trace};
use nu_errors::ShellError;
use nu_protocol::hir::{ExternalRedirection, InternalCommand};
use nu_protocol::{CommandAction, Primitive, ReturnSuccess, UntaggedValue, Value};
use nu_source::{PrettyDebug, Span, Tag};
use nu_stream::{trace_stream, InputStream, ToInputStream};
use std::sync::atomic::Ordering;
use std::sync::Arc;
pub(crate) async fn run_internal_command(
command: InternalCommand,
context: &EvaluationContext,
input: InputStream,
) -> Result<InputStream, ShellError> {
if log_enabled!(log::Level::Trace) {
trace!(target: "nu::run::internal", "->");
trace!(target: "nu::run::internal", "{}", command.name);
}
let objects: InputStream = trace_stream!(target: "nu::trace_stream::internal", "input" = input);
let internal_command = context.scope.expect_command(&command.name);
if command.name == "autoenv untrust" {
context
.user_recently_used_autoenv_untrust
.store(true, Ordering::SeqCst);
}
let result = {
context
.run_command(
internal_command?,
Tag::unknown_anchor(command.name_span),
command.args.clone(),
objects,
)
.await?
};
let head = Arc::new(command.args.head.clone());
let context = context.clone();
let command = Arc::new(command);
Ok(InputStream::from_stream(
result
.then(move |item| {
let head = head.clone();
let command = command.clone();
let context = context.clone();
async move {
match item {
Ok(ReturnSuccess::Action(action)) => match action {
CommandAction::ChangePath(path) => {
context.shell_manager.set_path(path);
InputStream::empty()
}
CommandAction::Exit => std::process::exit(0), // TODO: save history.txt
CommandAction::Error(err) => {
context.error(err);
InputStream::empty()
}
CommandAction::AutoConvert(tagged_contents, extension) => {
let contents_tag = tagged_contents.tag.clone();
let command_name = format!("from {}", extension);
let command = command.clone();
if let Some(converter) = context.scope.get_command(&command_name) {
let new_args = RawCommandArgs {
host: context.host.clone(),
ctrl_c: context.ctrl_c.clone(),
current_errors: context.current_errors.clone(),
shell_manager: context.shell_manager.clone(),
call_info: UnevaluatedCallInfo {
args: nu_protocol::hir::Call {
head: (&*head).clone(),
positional: None,
named: None,
span: Span::unknown(),
external_redirection: ExternalRedirection::Stdout,
},
name_tag: Tag::unknown_anchor(command.name_span),
},
scope: context.scope.clone(),
};
let result = converter
.run(new_args.with_input(vec![tagged_contents]))
.await;
match result {
Ok(mut result) => {
let result_vec: Vec<Result<ReturnSuccess, ShellError>> =
result.drain_vec().await;
let mut output = vec![];
for res in result_vec {
match res {
Ok(ReturnSuccess::Value(Value {
value: UntaggedValue::Table(list),
..
})) => {
for l in list {
output.push(Ok(l));
}
}
Ok(ReturnSuccess::Value(Value {
value,
..
})) => {
output
.push(Ok(value
.into_value(contents_tag.clone())));
}
Err(e) => output.push(Err(e)),
_ => {}
}
}
futures::stream::iter(output).to_input_stream()
}
Err(err) => {
context.error(err);
InputStream::empty()
}
}
} else {
InputStream::one(tagged_contents)
}
}
CommandAction::EnterHelpShell(value) => match value {
Value {
value: UntaggedValue::Primitive(Primitive::String(cmd)),
tag,
} => {
context.shell_manager.insert_at_current(Box::new(
match HelpShell::for_command(
UntaggedValue::string(cmd).into_value(tag),
&context.scope,
) {
Ok(v) => v,
Err(err) => {
context.error(err);
return InputStream::empty();
}
},
));
InputStream::from_stream(futures::stream::iter(vec![]))
}
_ => {
context.shell_manager.insert_at_current(Box::new(
match HelpShell::index(&context.scope) {
Ok(v) => v,
Err(err) => {
context.error(err);
return InputStream::empty();
}
},
));
InputStream::from_stream(futures::stream::iter(vec![]))
}
},
CommandAction::EnterValueShell(value) => {
context
.shell_manager
.insert_at_current(Box::new(ValueShell::new(value)));
InputStream::from_stream(futures::stream::iter(vec![]))
}
CommandAction::EnterShell(location) => {
context.shell_manager.insert_at_current(Box::new(
match FilesystemShell::with_location(location) {
Ok(v) => v,
Err(err) => {
context.error(err.into());
return InputStream::empty();
}
},
));
InputStream::from_stream(futures::stream::iter(vec![]))
}
CommandAction::AddPlugins(path) => {
match crate::plugin::build_plugin::scan(vec![
std::path::PathBuf::from(path),
]) {
Ok(plugins) => {
context.add_commands(
plugins
.into_iter()
.filter(|p| {
!context.is_command_registered(p.name())
})
.collect(),
);
InputStream::empty()
}
Err(reason) => {
context.error(reason);
InputStream::empty()
}
}
}
CommandAction::PreviousShell => {
context.shell_manager.prev();
InputStream::empty()
}
CommandAction::NextShell => {
context.shell_manager.next();
InputStream::empty()
}
CommandAction::LeaveShell => {
context.shell_manager.remove_at_current();
if context.shell_manager.is_empty() {
std::process::exit(0); // TODO: save history.txt
}
InputStream::empty()
}
},
Ok(ReturnSuccess::Value(Value {
value: UntaggedValue::Error(err),
..
})) => {
context.error(err);
InputStream::empty()
}
Ok(ReturnSuccess::Value(v)) => InputStream::one(v),
Ok(ReturnSuccess::DebugValue(v)) => {
let doc = PrettyDebug::pretty_doc(&v);
let mut buffer = termcolor::Buffer::ansi();
let _ = doc.render_raw(
context.with_host(|host| host.width() - 5),
&mut nu_source::TermColored::new(&mut buffer),
);
let value = String::from_utf8_lossy(buffer.as_slice());
InputStream::one(UntaggedValue::string(value).into_untagged_value())
}
Err(err) => {
context.error(err);
InputStream::empty()
}
}
}
})
.flatten()
.take_while(|x| futures::future::ready(!x.is_error())),
))
}