nushell/src/commands/from_toml.rs

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use crate::object::base::OF64;
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use crate::object::{Primitive, TaggedDictBuilder, Value};
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use crate::prelude::*;
fn convert_toml_value_to_nu_value(v: &toml::Value, tag: impl Into<Tag>) -> Tagged<Value> {
let tag = tag.into();
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match v {
toml::Value::Boolean(b) => Value::Primitive(Primitive::Boolean(*b)).tagged(tag),
toml::Value::Integer(n) => Value::Primitive(Primitive::Int(*n)).tagged(tag),
toml::Value::Float(n) => Value::Primitive(Primitive::Float(OF64::from(*n))).tagged(tag),
toml::Value::String(s) => Value::Primitive(Primitive::String(String::from(s))).tagged(tag),
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toml::Value::Array(a) => Value::List(
a.iter()
.map(|x| convert_toml_value_to_nu_value(x, tag))
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.collect(),
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)
.tagged(tag),
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toml::Value::Datetime(dt) => {
Value::Primitive(Primitive::String(dt.to_string())).tagged(tag)
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}
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toml::Value::Table(t) => {
let mut collected = TaggedDictBuilder::new(tag);
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for (k, v) in t.iter() {
collected.insert_tagged(k.clone(), convert_toml_value_to_nu_value(v, tag));
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}
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collected.into_tagged_value()
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}
}
}
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pub fn from_toml_string_to_value(
s: String,
tag: impl Into<Tag>,
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) -> Result<Tagged<Value>, Box<dyn std::error::Error>> {
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let v: toml::Value = s.parse::<toml::Value>()?;
Ok(convert_toml_value_to_nu_value(&v, tag))
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}
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pub fn from_toml(args: CommandArgs) -> Result<OutputStream, ShellError> {
let out = args.input;
let span = args.call_info.name_span;
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Ok(out
.values
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.map(move |a| {
let value_tag = a.tag();
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match a.item {
Value::Primitive(Primitive::String(s)) => {
match from_toml_string_to_value(s, value_tag) {
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Ok(x) => ReturnSuccess::value(x),
Err(_) => Err(ShellError::labeled_error_with_secondary(
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"Could not parse as TOML",
"input cannot be parsed as TOML",
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span,
"value originates from here",
value_tag.span,
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)),
}
}
_ => Err(ShellError::labeled_error_with_secondary(
"Expected a string from pipeline",
"requires string input",
span,
"value originates from here",
a.span(),
)),
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}
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})
.to_output_stream())
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}