forked from extern/nushell
97 lines
2.6 KiB
Rust
97 lines
2.6 KiB
Rust
use crate::commands::WholeStreamCommand;
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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, TaggedDictBuilder, UntaggedValue, Value};
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use std::collections::HashMap;
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pub struct FromINI;
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impl WholeStreamCommand for FromINI {
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fn name(&self) -> &str {
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"from ini"
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}
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fn signature(&self) -> Signature {
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Signature::build("from ini")
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}
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fn usage(&self) -> &str {
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"Parse text as .ini and create 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_ini(args, registry)
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}
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}
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fn convert_ini_second_to_nu_value(v: &HashMap<String, String>, tag: impl Into<Tag>) -> Value {
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let mut second = TaggedDictBuilder::new(tag);
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for (key, value) in v.iter() {
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second.insert_untagged(key.clone(), Primitive::String(value.clone()));
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}
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second.into_value()
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}
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fn convert_ini_top_to_nu_value(
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v: &HashMap<String, HashMap<String, String>>,
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tag: impl Into<Tag>,
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) -> Value {
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let tag = tag.into();
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let mut top_level = TaggedDictBuilder::new(tag.clone());
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for (key, value) in v.iter() {
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top_level.insert_value(
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key.clone(),
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convert_ini_second_to_nu_value(value, tag.clone()),
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);
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}
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top_level.into_value()
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}
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pub fn from_ini_string_to_value(
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s: String,
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tag: impl Into<Tag>,
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) -> Result<Value, serde_ini::de::Error> {
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let v: HashMap<String, HashMap<String, String>> = serde_ini::from_str(&s)?;
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Ok(convert_ini_top_to_nu_value(&v, tag))
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}
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fn from_ini(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 input = args.input;
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let stream = async_stream! {
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let concat_string = input.collect_string(tag.clone()).await?;
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match from_ini_string_to_value(concat_string.item, tag.clone()) {
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Ok(x) => match x {
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Value { value: UntaggedValue::Table(list), .. } => {
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for l in list {
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yield ReturnSuccess::value(l);
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}
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}
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x => yield ReturnSuccess::value(x),
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},
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Err(_) => {
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yield Err(ShellError::labeled_error_with_secondary(
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"Could not parse as INI",
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"input cannot be parsed as INI",
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&tag,
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"value originates from here",
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concat_string.tag,
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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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