2019-08-19 07:16:39 +02:00
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use crate::commands::WholeStreamCommand;
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2019-09-05 18:23:42 +02:00
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use crate::data::{Primitive, Value};
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2019-05-28 06:00:00 +02:00
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use crate::prelude::*;
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2019-08-19 07:16:39 +02:00
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pub struct ToJSON;
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impl WholeStreamCommand for ToJSON {
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fn name(&self) -> &str {
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"to-json"
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}
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fn signature(&self) -> Signature {
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Signature::build("to-json")
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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 .json 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_json(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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2019-09-01 18:20:31 +02:00
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pub fn value_to_json_value(v: &Tagged<Value>) -> Result<serde_json::Value, ShellError> {
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Ok(match v.item() {
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2019-06-30 08:46:49 +02:00
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Value::Primitive(Primitive::Boolean(b)) => serde_json::Value::Bool(*b),
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2019-08-30 19:29:04 +02:00
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Value::Primitive(Primitive::Bytes(b)) => serde_json::Value::Number(
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serde_json::Number::from(b.to_u64().expect("What about really big numbers")),
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),
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2019-06-30 08:46:49 +02:00
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Value::Primitive(Primitive::Date(d)) => serde_json::Value::String(d.to_string()),
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Value::Primitive(Primitive::EndOfStream) => serde_json::Value::Null,
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2019-07-27 09:45:00 +02:00
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Value::Primitive(Primitive::BeginningOfStream) => serde_json::Value::Null,
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2019-08-30 19:29:04 +02:00
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Value::Primitive(Primitive::Decimal(f)) => serde_json::Value::Number(
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serde_json::Number::from_f64(
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f.to_f64().expect("TODO: What about really big decimals?"),
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)
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.unwrap(),
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),
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2019-09-01 18:20:31 +02:00
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Value::Primitive(Primitive::Int(i)) => serde_json::Value::Number(serde_json::Number::from(
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2019-10-13 06:12:43 +02:00
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CoerceInto::<i64>::coerce_into(i.tagged(&v.tag), "converting to JSON number")?,
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2019-09-01 18:20:31 +02:00
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)),
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2019-06-30 08:46:49 +02:00
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Value::Primitive(Primitive::Nothing) => serde_json::Value::Null,
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2019-09-10 17:31:21 +02:00
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Value::Primitive(Primitive::Pattern(s)) => serde_json::Value::String(s.clone()),
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2019-06-30 08:46:49 +02:00
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Value::Primitive(Primitive::String(s)) => serde_json::Value::String(s.clone()),
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2019-07-15 23:16:27 +02:00
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Value::Primitive(Primitive::Path(s)) => serde_json::Value::String(s.display().to_string()),
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2019-06-30 08:46:49 +02:00
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2019-09-05 18:23:42 +02:00
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Value::Table(l) => serde_json::Value::Array(json_list(l)?),
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2019-10-13 06:12:43 +02:00
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Value::Error(e) => return Err(e.clone()),
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2019-06-30 08:46:49 +02:00
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Value::Block(_) => serde_json::Value::Null,
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2019-09-12 20:29:16 +02:00
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Value::Primitive(Primitive::Binary(b)) => serde_json::Value::Array(
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2019-07-04 07:11:56 +02:00
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b.iter()
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.map(|x| {
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serde_json::Value::Number(serde_json::Number::from_f64(*x as f64).unwrap())
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})
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.collect(),
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),
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2019-09-05 18:23:42 +02:00
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Value::Row(o) => {
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2019-06-30 08:46:49 +02:00
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let mut m = serde_json::Map::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(k.clone(), value_to_json_value(v)?);
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2019-06-30 08:46:49 +02:00
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}
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serde_json::Value::Object(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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}
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fn json_list(input: &Vec<Tagged<Value>>) -> Result<Vec<serde_json::Value>, ShellError> {
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let mut out = vec![];
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for value in input {
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out.push(value_to_json_value(value)?);
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2019-06-30 08:46:49 +02:00
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}
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2019-09-01 18:20:31 +02:00
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Ok(out)
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2019-06-30 08:46:49 +02:00
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}
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2019-08-19 07:16:39 +02:00
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fn to_json(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
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2019-07-24 00:22:11 +02:00
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let args = args.evaluate_once(registry)?;
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2019-09-14 18:30:24 +02:00
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let name_tag = args.name_tag();
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2019-09-26 02:22:17 +02:00
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let stream = async_stream! {
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2019-09-04 08:48:40 +02:00
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let input: Vec<Tagged<Value>> = args.input.values.collect().await;
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2019-07-24 00:22:11 +02:00
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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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2019-09-05 18:23:42 +02:00
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vec![Tagged { item: Value::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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match value_to_json_value(&value) {
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Ok(json_value) => {
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match serde_json::to_string(&json_value) {
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Ok(x) => yield ReturnSuccess::value(
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2019-10-13 06:12:43 +02:00
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Value::Primitive(Primitive::String(x)).tagged(&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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2019-09-14 18:30:24 +02:00
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"Expected a table with JSON-compatible structure.tag() from pipeline",
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2019-09-04 08:48:40 +02:00
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"requires JSON-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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"originates from here".to_string(),
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2019-09-14 18:30:24 +02:00
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value.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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_ => 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 JSON-compatible structure from pipeline",
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2019-08-06 05:03:13 +02:00
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"requires JSON-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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2019-05-28 06:00:00 +02:00
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}
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