forked from extern/nushell
f70c6d5d48
This commit extracts Tag, Span, Text, as well as source-related debug facilities into a new crate called nu_source. This change is much bigger than one might have expected because the previous code relied heavily on implementing inherent methods on `Tagged<T>` and `Spanned<T>`, which is no longer possible. As a result, this change creates more concrete types instead of using `Tagged<T>`. One notable example: Tagged<Value> became Value, and Value became UntaggedValue. This change clarifies the intent of the code in many places, but it does make it a big change.
87 lines
2.5 KiB
Rust
87 lines
2.5 KiB
Rust
use crate::commands::WholeStreamCommand;
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use crate::data::{Primitive, TaggedDictBuilder, Value};
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use crate::prelude::*;
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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, UntaggedValue::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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