522a828687
* Refactor InputStream and affected commands. First, making `values` private and leaning on the `Stream` implementation makes consumes of `InputStream` less likely to have to change in the future, if we change what an `InputStream` is internally. Second, we're dropping `Option<InputStream>` as the input to pipelines, internals, and externals. Instead, `InputStream.is_empty` can be used to check for "emptiness". Empty streams are typically only ever used as the first input to a pipeline. * Add run_external internal command. We want to push external commands closer to internal commands, eventually eliminating the concept of "external" completely. This means we can consolidate a couple of things: - Variable evaluation (for example, `$it`, `$nu`, alias vars) - Behaviour of whole stream vs per-item external execution It should also make it easier for us to start introducing argument signatures for external commands, * Update run_external.rs * Update run_external.rs * Update run_external.rs * Update run_external.rs Co-authored-by: Jonathan Turner <jonathandturner@users.noreply.github.com>
107 lines
3.2 KiB
Rust
107 lines
3.2 KiB
Rust
#[cfg(feature = "clipboard")]
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pub mod clipboard {
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use crate::commands::WholeStreamCommand;
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use crate::context::CommandRegistry;
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use crate::prelude::*;
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use futures::stream::StreamExt;
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use nu_errors::ShellError;
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use nu_protocol::{ReturnValue, Signature, Value};
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use clipboard::{ClipboardContext, ClipboardProvider};
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pub struct Clip;
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#[derive(Deserialize)]
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pub struct ClipArgs {}
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impl WholeStreamCommand for Clip {
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fn name(&self) -> &str {
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"clip"
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}
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fn signature(&self) -> Signature {
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Signature::build("clip")
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}
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fn usage(&self) -> &str {
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"Copy the contents of the pipeline to the copy/paste buffer"
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}
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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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args.process(registry, clip)?.run()
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}
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}
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pub fn clip(
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ClipArgs {}: ClipArgs,
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RunnableContext { input, name, .. }: RunnableContext,
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) -> Result<OutputStream, ShellError> {
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let stream = async_stream! {
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let values: Vec<Value> = input.collect().await;
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let mut clip_stream = inner_clip(values, name).await;
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while let Some(value) = clip_stream.next().await {
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yield value;
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}
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};
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let stream: BoxStream<'static, ReturnValue> = stream.boxed();
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Ok(OutputStream::from(stream))
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}
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async fn inner_clip(input: Vec<Value>, name: Tag) -> OutputStream {
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if let Ok(clip_context) = ClipboardProvider::new() {
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let mut clip_context: ClipboardContext = clip_context;
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let mut new_copy_data = String::new();
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if !input.is_empty() {
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let mut first = true;
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for i in input.iter() {
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if !first {
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new_copy_data.push_str("\n");
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} else {
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first = false;
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}
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let string: String = match i.as_string() {
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Ok(string) => string.to_string(),
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Err(_) => {
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return OutputStream::one(Err(ShellError::labeled_error(
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"Given non-string data",
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"expected strings from pipeline",
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name,
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)))
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}
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};
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new_copy_data.push_str(&string);
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}
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}
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match clip_context.set_contents(new_copy_data) {
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Ok(_) => {}
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Err(_) => {
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return OutputStream::one(Err(ShellError::labeled_error(
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"Could not set contents of clipboard",
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"could not set contents of clipboard",
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name,
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)));
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}
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}
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OutputStream::empty()
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} else {
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OutputStream::one(Err(ShellError::labeled_error(
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"Could not open clipboard",
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"could not open clipboard",
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name,
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)))
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}
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}
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}
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