2019-08-19 07:16:39 +02:00
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use crate::commands::WholeStreamCommand;
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2019-07-16 06:05:38 +02:00
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use crate::prelude::*;
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2019-11-30 01:21:05 +01:00
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use nu_errors::{CoerceInto, ShellError};
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use nu_protocol::{Primitive, ReturnSuccess, Signature, UnspannedPathMember, UntaggedValue, Value};
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2019-07-16 06:05:38 +02:00
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2019-08-19 07:16:39 +02:00
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pub struct ToYAML;
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impl WholeStreamCommand for ToYAML {
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fn name(&self) -> &str {
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2020-05-04 10:44:33 +02:00
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"to yaml"
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2019-08-19 07:16:39 +02:00
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}
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fn signature(&self) -> Signature {
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2020-05-04 10:44:33 +02:00
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Signature::build("to yaml")
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2019-08-19 07:16:39 +02:00
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}
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2019-08-30 00:52:32 +02:00
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fn usage(&self) -> &str {
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"Convert table into .yaml/.yml text"
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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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to_yaml(args, registry)
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}
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2019-08-19 07:16:39 +02:00
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}
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2019-11-21 15:33:14 +01:00
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pub fn value_to_yaml_value(v: &Value) -> Result<serde_yaml::Value, ShellError> {
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Ok(match &v.value {
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UntaggedValue::Primitive(Primitive::Boolean(b)) => serde_yaml::Value::Bool(*b),
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UntaggedValue::Primitive(Primitive::Bytes(b)) => {
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2020-01-04 07:44:17 +01:00
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serde_yaml::Value::Number(serde_yaml::Number::from(b.to_f64().ok_or_else(|| {
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ShellError::labeled_error(
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"Could not convert to bytes",
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"could not convert to bytes",
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&v.tag,
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)
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})?))
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2019-11-17 06:48:48 +01:00
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}
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2020-01-04 07:44:17 +01:00
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UntaggedValue::Primitive(Primitive::Duration(secs)) => serde_yaml::Value::Number(
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serde_yaml::Number::from(secs.to_f64().ok_or_else(|| {
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ShellError::labeled_error(
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"Could not convert to duration",
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"could not convert to duration",
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&v.tag,
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)
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})?),
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),
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2019-11-21 15:33:14 +01:00
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UntaggedValue::Primitive(Primitive::Date(d)) => serde_yaml::Value::String(d.to_string()),
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UntaggedValue::Primitive(Primitive::EndOfStream) => serde_yaml::Value::Null,
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UntaggedValue::Primitive(Primitive::BeginningOfStream) => serde_yaml::Value::Null,
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UntaggedValue::Primitive(Primitive::Decimal(f)) => {
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2020-01-04 07:44:17 +01:00
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serde_yaml::Value::Number(serde_yaml::Number::from(f.to_f64().ok_or_else(|| {
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ShellError::labeled_error(
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"Could not convert to decimal",
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"could not convert to decimal",
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&v.tag,
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)
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})?))
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2019-07-16 06:05:38 +02:00
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}
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2019-11-21 15:33:14 +01:00
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UntaggedValue::Primitive(Primitive::Int(i)) => {
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serde_yaml::Value::Number(serde_yaml::Number::from(CoerceInto::<i64>::coerce_into(
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i.tagged(&v.tag),
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"converting to YAML number",
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)?))
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}
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UntaggedValue::Primitive(Primitive::Nothing) => serde_yaml::Value::Null,
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UntaggedValue::Primitive(Primitive::Pattern(s)) => serde_yaml::Value::String(s.clone()),
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UntaggedValue::Primitive(Primitive::String(s)) => serde_yaml::Value::String(s.clone()),
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2019-12-03 07:44:59 +01:00
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UntaggedValue::Primitive(Primitive::Line(s)) => serde_yaml::Value::String(s.clone()),
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2019-11-21 15:33:14 +01:00
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UntaggedValue::Primitive(Primitive::ColumnPath(path)) => {
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2019-11-04 16:47:03 +01:00
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let mut out = vec![];
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for member in path.iter() {
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2019-11-21 15:33:14 +01:00
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match &member.unspanned {
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UnspannedPathMember::String(string) => {
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2019-11-04 16:47:03 +01:00
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out.push(serde_yaml::Value::String(string.clone()))
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}
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2019-11-21 15:33:14 +01:00
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UnspannedPathMember::Int(int) => out.push(serde_yaml::Value::Number(
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2019-11-04 16:47:03 +01:00
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serde_yaml::Number::from(CoerceInto::<i64>::coerce_into(
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int.tagged(&member.span),
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"converting to YAML number",
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)?),
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)),
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}
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}
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serde_yaml::Value::Sequence(out)
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}
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2019-11-21 15:33:14 +01:00
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UntaggedValue::Primitive(Primitive::Path(s)) => {
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serde_yaml::Value::String(s.display().to_string())
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}
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2019-07-16 06:05:38 +02:00
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2019-11-21 15:33:14 +01:00
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UntaggedValue::Table(l) => {
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2019-09-01 18:20:31 +02:00
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let mut out = vec![];
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for value in l {
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out.push(value_to_yaml_value(value)?);
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}
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serde_yaml::Value::Sequence(out)
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2019-07-16 06:05:38 +02:00
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}
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2019-11-21 15:33:14 +01:00
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UntaggedValue::Error(e) => return Err(e.clone()),
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2019-12-04 22:14:52 +01:00
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UntaggedValue::Block(_) | UntaggedValue::Primitive(Primitive::Range(_)) => {
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serde_yaml::Value::Null
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}
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2019-11-21 15:33:14 +01:00
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UntaggedValue::Primitive(Primitive::Binary(b)) => serde_yaml::Value::Sequence(
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2019-07-16 06:05:38 +02:00
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b.iter()
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.map(|x| serde_yaml::Value::Number(serde_yaml::Number::from(*x)))
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.collect(),
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),
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2019-11-21 15:33:14 +01:00
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UntaggedValue::Row(o) => {
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2019-07-16 06:05:38 +02:00
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let mut m = serde_yaml::Mapping::new();
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for (k, v) in o.entries.iter() {
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2019-09-01 18:20:31 +02:00
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m.insert(
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serde_yaml::Value::String(k.clone()),
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value_to_yaml_value(v)?,
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);
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2019-07-16 06:05:38 +02:00
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}
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serde_yaml::Value::Mapping(m)
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}
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2019-09-01 18:20:31 +02:00
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})
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2019-07-16 06:05:38 +02:00
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}
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2019-08-19 07:16:39 +02:00
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fn to_yaml(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
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2020-05-16 05:18:24 +02:00
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let registry = registry.clone();
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2019-09-26 02:22:17 +02:00
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let stream = async_stream! {
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2020-05-16 05:18:24 +02:00
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let args = args.evaluate_once(®istry).await?;
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let name_tag = args.name_tag();
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let name_span = name_tag.span;
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Move external closer to internal (#1611)
* Refactor InputStream and affected commands.
First, making `values` private and leaning on the `Stream` implementation makes
consumes of `InputStream` less likely to have to change in the future, if we
change what an `InputStream` is internally.
Second, we're dropping `Option<InputStream>` as the input to pipelines,
internals, and externals. Instead, `InputStream.is_empty` can be used to check
for "emptiness". Empty streams are typically only ever used as the first input
to a pipeline.
* Add run_external internal command.
We want to push external commands closer to internal commands, eventually
eliminating the concept of "external" completely. This means we can consolidate
a couple of things:
- Variable evaluation (for example, `$it`, `$nu`, alias vars)
- Behaviour of whole stream vs per-item external execution
It should also make it easier for us to start introducing argument signatures
for external commands,
* Update run_external.rs
* Update run_external.rs
* Update run_external.rs
* Update run_external.rs
Co-authored-by: Jonathan Turner <jonathandturner@users.noreply.github.com>
2020-04-20 05:30:44 +02:00
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let input: Vec<Value> = args.input.collect().await;
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2019-09-04 08:48:40 +02:00
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let to_process_input = if input.len() > 1 {
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2019-10-13 06:12:43 +02:00
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let tag = input[0].tag.clone();
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2019-11-21 15:33:14 +01:00
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vec![Value { value: UntaggedValue::Table(input), tag } ]
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2019-09-04 08:48:40 +02:00
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} else if input.len() == 1 {
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input
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} else {
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vec![]
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};
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for value in to_process_input {
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2019-11-21 15:33:14 +01:00
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let value_span = value.tag.span;
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2019-09-04 08:48:40 +02:00
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match value_to_yaml_value(&value) {
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Ok(yaml_value) => {
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match serde_yaml::to_string(&yaml_value) {
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Ok(x) => yield ReturnSuccess::value(
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2019-11-21 15:33:14 +01:00
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UntaggedValue::Primitive(Primitive::String(x)).into_value(&name_tag),
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2019-09-04 08:48:40 +02:00
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),
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_ => yield Err(ShellError::labeled_error_with_secondary(
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2020-01-08 12:12:59 +01:00
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"Expected a table with YAML-compatible structure from pipeline",
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2019-09-04 08:48:40 +02:00
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"requires YAML-compatible input",
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2019-11-21 15:33:14 +01:00
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name_span,
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2019-09-04 08:48:40 +02:00
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"originates from here".to_string(),
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2019-11-21 15:33:14 +01:00
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value_span,
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2019-09-04 08:48:40 +02:00
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)),
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}
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}
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_ => yield Err(ShellError::labeled_error(
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2019-09-04 18:29:49 +02:00
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"Expected a table with YAML-compatible structure from pipeline",
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2019-08-06 05:03:13 +02:00
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"requires YAML-compatible input",
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2019-10-13 06:12:43 +02:00
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&name_tag))
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2019-09-04 08:48:40 +02:00
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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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2019-07-16 06:05:38 +02:00
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}
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2020-05-18 14:56:01 +02:00
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#[cfg(test)]
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mod tests {
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use super::ToYAML;
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#[test]
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fn examples_work_as_expected() {
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use crate::examples::test as test_examples;
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test_examples(ToYAML {})
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}
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}
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