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Lines no longer treats a text buffer as a line (#3153)

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This commit is contained in:
Jonathan Turner
2021-03-11 11:35:15 +13:00
committed by GitHub
parent ee5bd2b4b3
commit 0d305d7c3e
5 changed files with 84 additions and 46 deletions
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99
crates/nu-command/src/commands/lines.rs
View File

@ -56,59 +56,70 @@ async fn lines(args: CommandArgs) -> Result<OutputStream, ShellError> {
Ok(args
.input
.chain(eos)
.map(move |item| {
.filter_map(move |item| {
let leftover_string = leftover_string.clone();
async move {
match item {
Value {
value: UntaggedValue::Primitive(Primitive::String(st)),
..
} => {
let mut leftover_string = leftover_string.lock();
match item {
Value {
value: UntaggedValue::Primitive(Primitive::String(st)),
..
} => {
let mut leftover_string = leftover_string.lock();
let mut buffer = leftover_string.clone();
buffer.push_str(&st);
let lo_lines = (&*leftover_string).lines().map(|x| x.to_string());
let st_lines = st.lines().map(|x| x.to_string());
let mut lines: Vec<String> = lo_lines.chain(st_lines).collect();
let mut lines: Vec<String> =
buffer.lines().map(|x| x.to_string()).collect();
leftover_string.clear();
leftover_string.clear();
if !ends_with_line_ending(&st) {
if let Some(last) = lines.pop() {
leftover_string.push_str(&last);
if !ends_with_line_ending(&st) {
if let Some(last) = lines.pop() {
leftover_string.push_str(&last);
}
}
if !lines.is_empty() {
let success_lines: Vec<_> = lines
.iter()
.map(|x| {
ReturnSuccess::value(
UntaggedValue::string(x).into_untagged_value(),
)
})
.collect();
Some(futures::stream::iter(success_lines))
} else {
None
}
}
let success_lines: Vec<_> = lines
.iter()
.map(|x| {
ReturnSuccess::value(UntaggedValue::string(x).into_untagged_value())
})
.collect();
futures::stream::iter(success_lines)
}
Value {
value: UntaggedValue::Primitive(Primitive::EndOfStream),
..
} => {
let st = (&*leftover_string).lock().clone();
if !st.is_empty() {
futures::stream::iter(vec![ReturnSuccess::value(
UntaggedValue::string(st).into_untagged_value(),
)])
} else {
futures::stream::iter(vec![])
Value {
value: UntaggedValue::Primitive(Primitive::EndOfStream),
..
} => {
let st = (&*leftover_string).lock().clone();
if !st.is_empty() {
Some(futures::stream::iter(vec![ReturnSuccess::value(
UntaggedValue::string(st).into_untagged_value(),
)]))
} else {
None
}
}
Value {
tag: value_span, ..
} => Some(futures::stream::iter(vec![Err(
ShellError::labeled_error_with_secondary(
"Expected a string from pipeline",
"requires string input",
name_span,
"value originates from here",
value_span,
),
)])),
}
Value {
tag: value_span, ..
} => futures::stream::iter(vec![Err(ShellError::labeled_error_with_secondary(
"Expected a string from pipeline",
"requires string input",
name_span,
"value originates from here",
value_span,
))]),
}
})
.flatten()

15
crates/nu-command/src/utils/test_bins.rs
View File

@ -17,6 +17,21 @@ pub fn nonu() {
args().iter().skip(1).for_each(|arg| print!("{}", arg));
}
pub fn repeater() {
let mut stdout = io::stdout();
let args = args();
let mut args = args.iter().skip(1);
let letter = args.next().expect("needs a character to iterate");
let count = args.next().expect("need the number of times to iterate");
let count: u64 = count.parse().expect("can't convert count to number");
for _ in 0..count {
let _ = write!(stdout, "{}", letter);
}
let _ = stdout.flush();
}
pub fn iecho() {
// println! panics if stdout gets closed, whereas writeln gives us an error
let mut stdout = io::stdout();