forked from extern/nushell
e4226def16
This commit extracts five new crates:
- nu-source, which contains the core source-code handling logic in Nu,
including Text, Span, and also the pretty.rs-based debug logic
- nu-parser, which is the parser and expander logic
- nu-protocol, which is the bulk of the types and basic conveniences
used by plugins
- nu-errors, which contains ShellError, ParseError and error handling
conveniences
- nu-textview, which is the textview plugin extracted into a crate
One of the major consequences of this refactor is that it's no longer
possible to `impl X for Spanned<Y>` outside of the `nu-source` crate, so
a lot of types became more concrete (Value became a concrete type
instead of Spanned<Value>, for example).
This also turned a number of inherent methods in the main nu crate into
plain functions (impl Value {} became a bunch of functions in the
`value` namespace in `crate::data::value`).
90 lines
2.6 KiB
Rust
90 lines
2.6 KiB
Rust
use crate::commands::WholeStreamCommand;
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use crate::data::value;
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use crate::data::TaggedDictBuilder;
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use crate::prelude::*;
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use nu_errors::ShellError;
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use nu_protocol::{Primitive, ReturnSuccess, Signature, UntaggedValue, Value};
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pub struct FromURL;
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impl WholeStreamCommand for FromURL {
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fn name(&self) -> &str {
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"from-url"
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}
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fn signature(&self) -> Signature {
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Signature::build("from-url")
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}
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fn usage(&self) -> &str {
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"Parse url-encoded string as a table."
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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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from_url(args, registry)
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}
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}
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fn from_url(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
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let args = args.evaluate_once(registry)?;
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let tag = args.name_tag();
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let name_span = tag.span;
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let input = args.input;
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let stream = async_stream! {
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let values: Vec<Value> = input.values.collect().await;
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let mut concat_string = String::new();
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let mut latest_tag: Option<Tag> = None;
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for value in values {
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latest_tag = Some(value.tag.clone());
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let value_span = value.tag.span;
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match value.value {
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UntaggedValue::Primitive(Primitive::String(s)) => {
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concat_string.push_str(&s);
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}
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_ => yield Err(ShellError::labeled_error_with_secondary(
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"Expected a string from pipeline",
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"requires string input",
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name_span,
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"value originates from here",
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value_span,
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)),
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}
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}
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let result = serde_urlencoded::from_str::<Vec<(String, String)>>(&concat_string);
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match result {
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Ok(result) => {
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let mut row = TaggedDictBuilder::new(tag);
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for (k,v) in result {
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row.insert_untagged(k, value::string(v));
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}
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yield ReturnSuccess::value(row.into_value());
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}
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_ => {
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if let Some(last_tag) = latest_tag {
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yield Err(ShellError::labeled_error_with_secondary(
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"String not compatible with url-encoding",
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"input not url-encoded",
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tag,
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"value originates from here",
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last_tag,
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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(stream.to_output_stream())
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}
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