mirror of
https://github.com/nushell/nushell.git
synced 2024-10-17 15:52:50 +02:00
350 lines
13 KiB
Rust
350 lines
13 KiB
Rust
use crate::commands::UnevaluatedCallInfo;
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use crate::commands::WholeStreamCommand;
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use crate::data::value::format_leaf;
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use crate::prelude::*;
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use nu_errors::ShellError;
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use nu_protocol::hir::{self, Expression, ExternalRedirection, Literal, SpannedExpression};
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use nu_protocol::{Primitive, Scope, Signature, UntaggedValue, Value};
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use parking_lot::Mutex;
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use std::sync::atomic::AtomicBool;
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pub struct Autoview;
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#[async_trait]
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impl WholeStreamCommand for Autoview {
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fn name(&self) -> &str {
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"autoview"
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}
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fn signature(&self) -> Signature {
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Signature::build("autoview")
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}
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fn usage(&self) -> &str {
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"View the contents of the pipeline as a table or list."
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}
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async fn run(
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&self,
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args: CommandArgs,
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registry: &CommandRegistry,
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) -> Result<OutputStream, ShellError> {
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autoview(RunnableContext {
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input: args.input,
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registry: registry.clone(),
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shell_manager: args.shell_manager,
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host: args.host,
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ctrl_c: args.ctrl_c,
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current_errors: args.current_errors,
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name: args.call_info.name_tag,
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raw_input: args.raw_input,
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})
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.await
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}
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fn examples(&self) -> Vec<Example> {
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vec![
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Example {
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description: "Automatically view the results",
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example: "ls | autoview",
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result: None,
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},
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Example {
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description: "Autoview is also implied. The above can be written as",
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example: "ls",
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result: None,
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},
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]
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}
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}
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pub struct RunnableContextWithoutInput {
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pub shell_manager: ShellManager,
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pub host: Arc<parking_lot::Mutex<Box<dyn Host>>>,
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pub current_errors: Arc<Mutex<Vec<ShellError>>>,
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pub ctrl_c: Arc<AtomicBool>,
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pub registry: CommandRegistry,
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pub name: Tag,
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}
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impl RunnableContextWithoutInput {
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pub fn convert(context: RunnableContext) -> (InputStream, RunnableContextWithoutInput) {
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let new_context = RunnableContextWithoutInput {
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shell_manager: context.shell_manager,
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host: context.host,
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ctrl_c: context.ctrl_c,
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current_errors: context.current_errors,
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registry: context.registry,
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name: context.name,
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};
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(context.input, new_context)
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}
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}
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pub async fn autoview(context: RunnableContext) -> Result<OutputStream, ShellError> {
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let binary = context.get_command("binaryview");
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let text = context.get_command("textview");
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let table = context.get_command("table");
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#[derive(PartialEq)]
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enum AutoPivotMode {
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Auto,
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Always,
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Never,
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}
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let pivot_mode = crate::data::config::config(Tag::unknown());
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let pivot_mode = if let Some(v) = pivot_mode?.get("pivot_mode") {
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match v.as_string() {
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Ok(m) if m.to_lowercase() == "auto" => AutoPivotMode::Auto,
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Ok(m) if m.to_lowercase() == "always" => AutoPivotMode::Always,
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Ok(m) if m.to_lowercase() == "never" => AutoPivotMode::Never,
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_ => AutoPivotMode::Always,
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}
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} else {
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AutoPivotMode::Always
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};
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let (mut input_stream, context) = RunnableContextWithoutInput::convert(context);
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let term_width = context.host.lock().width();
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if let Some(x) = input_stream.next().await {
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match input_stream.next().await {
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Some(y) => {
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let ctrl_c = context.ctrl_c.clone();
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let xy = vec![x, y];
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let xy_stream = futures::stream::iter(xy)
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.chain(input_stream)
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.interruptible(ctrl_c);
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let stream = InputStream::from_stream(xy_stream);
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if let Some(table) = table {
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let command_args = create_default_command_args(&context).with_input(stream);
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let result = table.run(command_args, &context.registry).await?;
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result.collect::<Vec<_>>().await;
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}
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}
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_ => {
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match x {
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Value {
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value: UntaggedValue::Primitive(Primitive::String(ref s)),
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tag: Tag { anchor, span },
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} if anchor.is_some() => {
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if let Some(text) = text {
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let mut stream = VecDeque::new();
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stream.push_back(
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UntaggedValue::string(s).into_value(Tag { anchor, span }),
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);
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let command_args =
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create_default_command_args(&context).with_input(stream);
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let result = text.run(command_args, &context.registry).await?;
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result.collect::<Vec<_>>().await;
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} else {
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out!("{}", s);
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}
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}
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Value {
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value: UntaggedValue::Primitive(Primitive::String(s)),
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..
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} => {
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out!("{}", s);
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}
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Value {
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value: UntaggedValue::Primitive(Primitive::Line(ref s)),
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tag: Tag { anchor, span },
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} if anchor.is_some() => {
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if let Some(text) = text {
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let mut stream = VecDeque::new();
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stream.push_back(
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UntaggedValue::string(s).into_value(Tag { anchor, span }),
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);
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let command_args =
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create_default_command_args(&context).with_input(stream);
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let result = text.run(command_args, &context.registry).await?;
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result.collect::<Vec<_>>().await;
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} else {
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out!("{}\n", s);
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}
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}
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Value {
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value: UntaggedValue::Primitive(Primitive::Line(s)),
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..
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} => {
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out!("{}\n", s);
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}
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Value {
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value: UntaggedValue::Primitive(Primitive::Path(s)),
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..
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} => {
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out!("{}", s.display());
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}
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Value {
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value: UntaggedValue::Primitive(Primitive::Int(n)),
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..
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} => {
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out!("{}", n);
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}
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Value {
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value: UntaggedValue::Primitive(Primitive::Decimal(n)),
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..
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} => {
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// TODO: normalize decimal to remove trailing zeros.
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// normalization will be available in next release of bigdecimal crate
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let mut output = n.to_string();
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if output.contains('.') {
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output = output.trim_end_matches('0').to_owned();
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}
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if output.ends_with('.') {
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output.push('0');
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}
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out!("{}", output);
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}
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Value {
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value: UntaggedValue::Primitive(Primitive::Boolean(b)),
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..
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} => {
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out!("{}", b);
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}
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Value {
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value: UntaggedValue::Primitive(Primitive::Duration(_)),
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..
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} => {
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let output = format_leaf(&x).plain_string(100_000);
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out!("{}", output);
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}
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Value {
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value: UntaggedValue::Primitive(Primitive::Date(d)),
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..
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} => {
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out!("{}", d);
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}
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Value {
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value: UntaggedValue::Primitive(Primitive::Range(_)),
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..
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} => {
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let output = format_leaf(&x).plain_string(100_000);
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out!("{}", output);
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}
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Value {
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value: UntaggedValue::Primitive(Primitive::Binary(ref b)),
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..
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} => {
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if let Some(binary) = binary {
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let mut stream = VecDeque::new();
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stream.push_back(x);
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let command_args =
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create_default_command_args(&context).with_input(stream);
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let result = binary.run(command_args, &context.registry).await?;
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result.collect::<Vec<_>>().await;
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} else {
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use pretty_hex::*;
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out!("{:?}", b.hex_dump());
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}
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}
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Value {
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value: UntaggedValue::Error(e),
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..
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} => {
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return Err(e);
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}
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Value {
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value: UntaggedValue::Row(row),
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..
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} if pivot_mode == AutoPivotMode::Always
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|| (pivot_mode == AutoPivotMode::Auto
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&& (row
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.entries
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.iter()
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.map(|(_, v)| v.convert_to_string())
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.collect::<Vec<_>>()
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.iter()
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.fold(0usize, |acc, len| acc + len.len())
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+ row.entries.iter().count() * 2)
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> term_width) =>
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{
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let mut entries = vec![];
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for (key, value) in row.entries.iter() {
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entries.push(vec![
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nu_table::StyledString::new(
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key.to_string(),
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nu_table::TextStyle {
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alignment: nu_table::Alignment::Left,
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color: Some(ansi_term::Color::Green),
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is_bold: true,
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},
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),
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nu_table::StyledString::new(
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format_leaf(value).plain_string(100_000),
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nu_table::TextStyle::basic(),
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),
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]);
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}
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let table =
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nu_table::Table::new(vec![], entries, nu_table::Theme::compact());
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nu_table::draw_table(&table, term_width);
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}
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Value {
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value: ref item, ..
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} => {
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if let Some(table) = table {
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let mut stream = VecDeque::new();
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stream.push_back(x);
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let command_args =
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create_default_command_args(&context).with_input(stream);
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let result = table.run(command_args, &context.registry).await?;
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result.collect::<Vec<_>>().await;
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} else {
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out!("{:?}", item);
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}
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}
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}
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}
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}
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}
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Ok(OutputStream::empty())
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}
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fn create_default_command_args(context: &RunnableContextWithoutInput) -> RawCommandArgs {
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let span = context.name.span;
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RawCommandArgs {
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host: context.host.clone(),
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ctrl_c: context.ctrl_c.clone(),
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current_errors: context.current_errors.clone(),
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shell_manager: context.shell_manager.clone(),
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call_info: UnevaluatedCallInfo {
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args: hir::Call {
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head: Box::new(SpannedExpression::new(
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Expression::Literal(Literal::String(String::new())),
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span,
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)),
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positional: None,
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named: None,
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span,
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external_redirection: ExternalRedirection::Stdout,
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},
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name_tag: context.name.clone(),
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scope: Scope::new(),
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},
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}
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}
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#[cfg(test)]
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mod tests {
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use super::Autoview;
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#[test]
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fn examples_work_as_expected() {
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use crate::examples::test as test_examples;
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test_examples(Autoview {})
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}
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}
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