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Don't insert a final line ending on file load/reload.

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This commit is contained in:
Nathan Vegdahl 2021-07-20 18:40:41 -07:00
parent c848ed7abc
commit 198fe40951
1 changed files with 6 additions and 21 deletions
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27
helix-view/src/document.rs
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@ -306,19 +306,6 @@ pub async fn to_writer<'a, W: tokio::io::AsyncWriteExt + Unpin + ?Sized>(
Ok(())
}
/// Inserts the final line ending into `rope` if it's missing. [Why?](https://stackoverflow.com/questions/729692/why-should-text-files-end-with-a-newline)
pub fn with_line_ending(rope: &mut Rope) -> LineEnding {
// search for line endings
let line_ending = auto_detect_line_ending(rope).unwrap_or(DEFAULT_LINE_ENDING);
// add missing newline at the end of file
if rope.len_bytes() == 0 || !char_is_line_ending(rope.char(rope.len_chars() - 1)) {
rope.insert(rope.len_chars(), line_ending.as_str());
}
line_ending
}
/// Like std::mem::replace() except it allows the replacement value to be mapped from the
/// original value.
fn take_with<T, F>(mut_ref: &mut T, closure: F)
@ -456,7 +443,7 @@ pub fn open(
theme: Option<&Theme>,
config_loader: Option<&syntax::Loader>,
) -> Result<Self, Error> {
let (mut rope, encoding) = if path.exists() {
let (rope, encoding) = if path.exists() {
let mut file =
std::fs::File::open(&path).context(format!("unable to open {:?}", path))?;
from_reader(&mut file, encoding)?
@ -465,7 +452,6 @@ pub fn open(
(Rope::from(DEFAULT_LINE_ENDING.as_str()), encoding)
};
let line_ending = with_line_ending(&mut rope);
let mut doc = Self::from(rope, Some(encoding));
// set the path and try detecting the language
@ -474,9 +460,9 @@ pub fn open(
doc.detect_language(theme, loader);
}
// Detect indentation style and set line ending.
// Detect indentation style and line ending.
doc.detect_indent_style();
doc.line_ending = line_ending;
doc.line_ending = auto_detect_line_ending(&doc.text).unwrap_or(DEFAULT_LINE_ENDING);
Ok(doc)
}
@ -605,16 +591,15 @@ pub fn reload(&mut self, view_id: ViewId) -> Result<(), Error> {
}
let mut file = std::fs::File::open(path.unwrap())?;
let (mut rope, ..) = from_reader(&mut file, Some(encoding))?;
let line_ending = with_line_ending(&mut rope);
let (rope, ..) = from_reader(&mut file, Some(encoding))?;
let transaction = helix_core::diff::compare_ropes(self.text(), &rope);
self.apply(&transaction, view_id);
self.append_changes_to_history(view_id);
// Detect indentation style and set line ending.
// Detect indentation style and line ending.
self.detect_indent_style();
self.line_ending = line_ending;
self.line_ending = auto_detect_line_ending(&self.text).unwrap_or(DEFAULT_LINE_ENDING);
Ok(())
}