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https://github.com/nushell/nushell.git
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Have from-ssv not fail for header-only inputs (#1334)
This commit is contained in:
Jason Gedge
GitHub
parent
427bde83f7
commit
fa910b95b7
@ -197,15 +197,17 @@ fn string_to_table(
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headerless: bool,
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aligned_columns: bool,
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split_at: usize,
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) -> Option<Vec<Vec<(String, String)>>> {
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) -> Vec<Vec<(String, String)>> {
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let mut lines = s.lines().filter(|l| !l.trim().is_empty());
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let separator = " ".repeat(std::cmp::max(split_at, 1));
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let (ls, header_options) = if headerless {
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(lines, HeaderOptions::WithoutHeaders)
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} else {
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let headers = lines.next()?;
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(lines, HeaderOptions::WithHeaders(headers))
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match lines.next() {
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Some(header) => (lines, HeaderOptions::WithHeaders(header)),
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None => return vec![],
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}
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};
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let f = if aligned_columns {
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@ -214,11 +216,7 @@ fn string_to_table(
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parse_separated_columns
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};
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let parsed = f(ls, header_options, &separator);
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match parsed.len() {
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0 => None,
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_ => Some(parsed),
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}
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f(ls, header_options, &separator)
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}
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fn from_ssv_string_to_value(
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@ -229,7 +227,7 @@ fn from_ssv_string_to_value(
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tag: impl Into<Tag>,
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) -> Option<Value> {
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let tag = tag.into();
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let rows = string_to_table(s, headerless, aligned_columns, split_at)?
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let rows = string_to_table(s, headerless, aligned_columns, split_at)
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.iter()
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.map(|row| {
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let mut tagged_dict = TaggedDictBuilder::new(&tag);
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@ -323,10 +321,10 @@ mod tests {
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let result = string_to_table(input, false, true, 1);
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assert_eq!(
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result,
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Some(vec![
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vec![
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vec![owned("a", "1"), owned("b", "2")],
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vec![owned("a", "3"), owned("b", "4")]
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])
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]
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);
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}
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@ -338,10 +336,7 @@ mod tests {
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2
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"#;
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let result = string_to_table(input, false, true, 1);
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assert_eq!(
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result,
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Some(vec![vec![owned("a", "1")], vec![owned("a", "2")]])
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);
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assert_eq!(result, vec![vec![owned("a", "1")], vec![owned("a", "2")]]);
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}
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#[test]
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@ -354,21 +349,14 @@ mod tests {
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let result = string_to_table(input, true, true, 1);
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assert_eq!(
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result,
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Some(vec![
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vec![
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vec![owned("Column1", "a"), owned("Column2", "b")],
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vec![owned("Column1", "1"), owned("Column2", "2")],
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vec![owned("Column1", "3"), owned("Column2", "4")]
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])
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]
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);
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}
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#[test]
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fn it_returns_none_given_an_empty_string() {
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let input = "";
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let result = string_to_table(input, true, true, 1);
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assert!(result.is_none());
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}
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#[test]
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fn it_allows_a_predefined_number_of_spaces() {
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let input = r#"
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@ -380,18 +368,18 @@ mod tests {
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let result = string_to_table(input, false, true, 3);
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assert_eq!(
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result,
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Some(vec![
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vec![
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vec![
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owned("column a", "entry 1"),
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owned("column b", "entry number 2")
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],
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vec![owned("column a", "3"), owned("column b", "four")]
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])
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]
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);
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}
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#[test]
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fn it_trims_remaining_separator_space() -> Result<(), ShellError> {
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fn it_trims_remaining_separator_space() {
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let input = r#"
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colA colB colC
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val1 val2 val3
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@ -399,17 +387,14 @@ mod tests {
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let trimmed = |s: &str| s.trim() == s;
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let result = string_to_table(input, false, true, 2)
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.ok_or_else(|| ShellError::unexpected("table couldn't be parsed"))?;
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let result = string_to_table(input, false, true, 2);
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assert!(result
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.iter()
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.all(|row| row.iter().all(|(a, b)| trimmed(a) && trimmed(b))));
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Ok(())
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}
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#[test]
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fn it_keeps_empty_columns() -> Result<(), ShellError> {
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fn it_keeps_empty_columns() {
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let input = r#"
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colA col B col C
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val2 val3
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@ -417,8 +402,7 @@ mod tests {
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val7 val8
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"#;
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let result = string_to_table(input, false, true, 2)
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.ok_or_else(|| ShellError::unexpected("table couldn't be parsed"))?;
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let result = string_to_table(input, false, true, 2);
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assert_eq!(
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result,
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vec![
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@ -439,38 +423,43 @@ mod tests {
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],
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]
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);
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Ok(())
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}
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#[test]
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fn it_uses_the_full_final_column() -> Result<(), ShellError> {
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fn it_can_produce_an_empty_stream_for_header_only_input() {
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let input = "colA col B";
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let result = string_to_table(input, false, true, 2);
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let expected: Vec<Vec<(String, String)>> = vec![];
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assert_eq!(expected, result);
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}
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#[test]
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fn it_uses_the_full_final_column() {
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let input = r#"
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colA col B
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val1 val2 trailing value that should be included
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"#;
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let result = string_to_table(input, false, true, 2)
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.ok_or_else(|| ShellError::unexpected("table couldn't be parsed"))?;
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let result = string_to_table(input, false, true, 2);
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assert_eq!(
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result,
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vec![vec![
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owned("colA", "val1"),
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owned("col B", "val2 trailing value that should be included"),
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],]
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]]
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);
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Ok(())
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}
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#[test]
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fn it_handles_empty_values_when_headerless_and_aligned_columns() -> Result<(), ShellError> {
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fn it_handles_empty_values_when_headerless_and_aligned_columns() {
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let input = r#"
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a multi-word value b d
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1 3-3 4
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last
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"#;
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let result = string_to_table(input, true, true, 2)
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.ok_or_else(|| ShellError::unexpected("table couldn't be parsed"))?;
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let result = string_to_table(input, true, true, 2);
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assert_eq!(
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result,
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vec![
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@ -497,27 +486,21 @@ mod tests {
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],
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]
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);
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Ok(())
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}
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#[test]
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fn input_is_parsed_correctly_if_either_option_works() -> Result<(), ShellError> {
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fn input_is_parsed_correctly_if_either_option_works() {
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let input = r#"
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docker-registry docker-registry=default docker-registry=default 172.30.78.158 5000/TCP
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kubernetes component=apiserver,provider=kubernetes <none> 172.30.0.2 443/TCP
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kubernetes-ro component=apiserver,provider=kubernetes <none> 172.30.0.1 80/TCP
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"#;
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let aligned_columns_headerless = string_to_table(input, true, true, 2)
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.ok_or_else(|| ShellError::unexpected("table couldn't be parsed"))?;
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let separator_headerless = string_to_table(input, true, false, 2)
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.ok_or_else(|| ShellError::unexpected("table couldn't be parsed"))?;
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let aligned_columns_with_headers = string_to_table(input, false, true, 2)
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.ok_or_else(|| ShellError::unexpected("table couldn't be parsed"))?;
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let separator_with_headers = string_to_table(input, false, false, 2)
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.ok_or_else(|| ShellError::unexpected("table couldn't be parsed"))?;
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let aligned_columns_headerless = string_to_table(input, true, true, 2);
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let separator_headerless = string_to_table(input, true, false, 2);
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let aligned_columns_with_headers = string_to_table(input, false, true, 2);
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let separator_with_headers = string_to_table(input, false, false, 2);
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assert_eq!(aligned_columns_headerless, separator_headerless);
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assert_eq!(aligned_columns_with_headers, separator_with_headers);
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Ok(())
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}
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}
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