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[from|to]json additions/refactoring.

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This commit is contained in:
Andrés N. Robalino 2019-08-27 06:05:51 -05:00
parent 1dc1b0d071
commit b502954558
2 changed files with 133 additions and 37 deletions
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91
src/commands/from_json.rs
View File

@ -5,21 +5,26 @@ use crate::prelude::*;
pub struct FromJSON;
impl WholeStreamCommand for FromJSON {
fn run(
&self,
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
from_json(args, registry)
}
#[derive(Deserialize)]
pub struct FromJSONArgs {
objects: bool,
}
impl WholeStreamCommand for FromJSON {
fn name(&self) -> &str {
"from-json"
}
fn signature(&self) -> Signature {
Signature::build("from-json")
Signature::build("from-json").switch("objects")
}
fn run(
&self,
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
args.process(registry, from_json)?.run()
}
}
@ -64,10 +69,11 @@ pub fn from_json_string_to_value(
Ok(convert_json_value_to_nu_value(&v, tag))
}
fn from_json(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
let args = args.evaluate_once(registry)?;
let span = args.name_span();
let input = args.input;
fn from_json(
FromJSONArgs { objects }: FromJSONArgs,
RunnableContext { input, name, .. }: RunnableContext,
) -> Result<OutputStream, ShellError> {
let name_span = name;
let stream = async_stream_block! {
let values: Vec<Tagged<Value>> = input.values.collect().await;
@ -86,7 +92,7 @@ fn from_json(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStre
_ => yield Err(ShellError::labeled_error_with_secondary(
"Expected a string from pipeline",
"requires string input",
span,
name_span,
"value originates from here",
value_tag.span,
)),
@ -94,25 +100,50 @@ fn from_json(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStre
}
}
match from_json_string_to_value(concat_string, span) {
Ok(x) =>
match x {
Tagged { item: Value::List(list), .. } => {
for l in list {
yield ReturnSuccess::value(l);
if objects {
for json_str in concat_string.lines() {
if json_str.is_empty() {
continue;
}
match from_json_string_to_value(json_str.to_string(), name_span) {
Ok(x) =>
yield ReturnSuccess::value(x),
Err(_) => {
if let Some(last_tag) = latest_tag {
yield Err(ShellError::labeled_error_with_secondary(
"Could nnot parse as JSON",
"input cannot be parsed as JSON",
name_span,
"value originates from here",
last_tag.span))
}
}
x => yield ReturnSuccess::value(x),
}
Err(_) => if let Some(last_tag) = latest_tag {
yield Err(ShellError::labeled_error_with_secondary(
"Could not parse as JSON",
"input cannot be parsed as JSON",
span,
"value originates from here",
last_tag.span,
))
} ,
}
} else {
match from_json_string_to_value(concat_string, name_span) {
Ok(x) =>
match x {
Tagged { item: Value::List(list), .. } => {
for l in list {
yield ReturnSuccess::value(l);
}
}
x => yield ReturnSuccess::value(x),
}
Err(_) => {
if let Some(last_tag) = latest_tag {
yield Err(ShellError::labeled_error_with_secondary(
"Could not parse as JSON",
"input cannot be parsed as JSON",
name_span,
"value originates from here",
last_tag.span))
}
}
}
}
};

79
tests/filters_test.rs
View File

@ -16,7 +16,7 @@ fn can_convert_table_to_csv_text_and_from_csv_text_back_into_table() {
#[test]
fn converts_structured_table_to_csv_text() {
Playground::setup_for("filter_to_csv_test_1").with_files(vec![FileWithContentToBeTrimmed(
"sample.csv",
"sample.txt",
r#"
importer,shipper,tariff_item,name,origin
Plasticos Rival,Reverte,2509000000,Calcium carbonate,Spain
@ -27,7 +27,7 @@ fn converts_structured_table_to_csv_text() {
nu!(
output,
cwd("tests/fixtures/nuplayground/filter_to_csv_test_1"),
"open sample.csv --raw | lines | split-column \",\" a b c d origin | last 1 | to-csv | lines | nth 1 | echo \"$it\""
r#"open sample.txt | lines | split-column ",s" a b c d origin | last 1 | to-csv | lines | nth 1 | echo "$it""#
);
assert!(output.contains("Tigre Ecuador,OMYA Andina,3824909999,Calcium carbonate,Colombia"));
@ -36,7 +36,7 @@ fn converts_structured_table_to_csv_text() {
#[test]
fn converts_structured_table_to_csv_text_skipping_headers_after_conversion() {
Playground::setup_for("filter_to_csv_test_2").with_files(vec![FileWithContentToBeTrimmed(
"sample.csv",
"sample.txt",
r#"
importer,shipper,tariff_item,name,origin
Plasticos Rival,Reverte,2509000000,Calcium carbonate,Spain
@ -47,7 +47,7 @@ fn converts_structured_table_to_csv_text_skipping_headers_after_conversion() {
nu!(
output,
cwd("tests/fixtures/nuplayground/filter_to_csv_test_2"),
"open sample.csv --raw | lines | split-column \",\" a b c d origin | last 1 | to-csv --headerless | echo \"$it\""
r#"open sample.txt | lines | split-column "," a b c d origin | last 1 | to-csv --headerless | echo "$it""#
);
assert!(output.contains("Tigre Ecuador,OMYA Andina,3824909999,Calcium carbonate,Colombia"));
@ -106,6 +106,71 @@ fn can_convert_table_to_json_text_and_from_json_text_back_into_table() {
assert_eq!(output, "markup");
}
#[test]
fn converts_from_json_text_to_structured_table() {
Playground::setup_for("filter_from_json_test_1").with_files(vec![FileWithContentToBeTrimmed(
"katz.txt",
r#"
{
"katz": [
{"name": "Yehuda", "rusty_luck": 1},
{"name": "Jonathan", "rusty_luck": 1},
{"name": "Andres", "rusty_luck": 1},
{"name":"GorbyPuff", "rusty_luck": 1}
]
}
"#,
)]);
nu!(
output,
cwd("tests/fixtures/nuplayground/filter_from_json_test_1"),
"open katz.txt | from-json | get katz | get rusty_luck | sum | echo $it"
);
assert_eq!(output, "4");
}
#[test]
fn converts_from_json_text_recognizing_objects_independendtly_to_structured_table() {
Playground::setup_for("filter_from_json_test_2").with_files(vec![FileWithContentToBeTrimmed(
"katz.txt",
r#"
{"name": "Yehuda", "rusty_luck": 1}
{"name": "Jonathan", "rusty_luck": 1}
{"name": "Andres", "rusty_luck": 1}
{"name":"GorbyPuff", "rusty_luck": 3}
"#,
)]);
nu!(
output,
cwd("tests/fixtures/nuplayground/filter_from_json_test_2"),
r#"open katz.txt | from-json --objects | where name == "GorbyPuff" | get rusty_luck | echo $it"#
);
assert_eq!(output, "3");
}
#[test]
fn converts_structured_table_to_json_text() {
Playground::setup_for("filter_to_json_test_1").with_files(vec![FileWithContentToBeTrimmed(
"sample.txt",
r#"
JonAndrehudaTZ,3
GorbyPuff,100
"#,
)]);
nu!(
output,
cwd("tests/fixtures/nuplayground/filter_to_json_test_1"),
r#"open sample.txt | lines | split-column "," name luck | pick name | to-json | nth 0 | from-json | get name | echo $it"#
);
assert_eq!(output, "JonAndrehudaTZ");
}
#[test]
fn can_convert_json_text_to_bson_and_back_into_table() {
nu!(
@ -144,7 +209,7 @@ fn can_sort_by_column() {
nu!(
output,
cwd("tests/fixtures/formats"),
"open cargo_sample.toml --raw | lines | skip 1 | first 4 | split-column \"=\" | sort-by Column1 | skip 1 | first 1 | get Column1 | trim | echo $it"
r#"open cargo_sample.toml --raw | lines | skip 1 | first 4 | split-column "=" | sort-by Column1 | skip 1 | first 1 | get Column1 | trim | echo $it"#
);
assert_eq!(output, "description");
@ -155,7 +220,7 @@ fn can_sort_by_column_reverse() {
nu!(
output,
cwd("tests/fixtures/formats"),
"open cargo_sample.toml --raw | lines | skip 1 | first 4 | split-column \"=\" | sort-by Column1 --reverse | skip 1 | first 1 | get Column1 | trim | echo $it"
r#"open cargo_sample.toml --raw | lines | skip 1 | first 4 | split-column "=" | sort-by Column1 --reverse | skip 1 | first 1 | get Column1 | trim | echo $it"#
);
assert_eq!(output, "name");
@ -166,7 +231,7 @@ fn can_split_by_column() {
nu!(
output,
cwd("tests/fixtures/formats"),
"open cargo_sample.toml --raw | lines | skip 1 | first 1 | split-column \"=\" | get Column1 | trim | echo $it"
r#"open cargo_sample.toml --raw | lines | skip 1 | first 1 | split-column "=" | get Column1 | trim | echo $it"#
);
assert_eq!(output, "name");