forked from extern/nushell
118 lines
3.3 KiB
Rust
118 lines
3.3 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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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(
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v: &HashMap<String, String>,
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tag: impl Into<Tag>,
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) -> Tagged<Value> {
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let mut second = TaggedDictBuilder::new(tag);
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for (key, value) in v.into_iter() {
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second.insert(key.clone(), Primitive::String(value.clone()));
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}
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second.into_tagged_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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) -> Tagged<Value> {
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let tag = tag.into();
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let mut top_level = TaggedDictBuilder::new(tag);
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for (key, value) in v.iter() {
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top_level.insert_tagged(key.clone(), convert_ini_second_to_nu_value(value, tag));
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}
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top_level.into_tagged_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<Tagged<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_block! {
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let values: Vec<Tagged<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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let value_tag = value.tag();
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latest_tag = Some(value_tag);
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match value.item {
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Value::Primitive(Primitive::String(s)) => {
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concat_string.push_str(&s);
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concat_string.push_str("\n");
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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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tag,
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"value originates from here",
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value_tag,
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)),
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}
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}
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match from_ini_string_to_value(concat_string, tag) {
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Ok(x) => match x {
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Tagged { item: Value::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(_) => if let Some(last_tag) = latest_tag {
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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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last_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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