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fix inconsistency with vim in moving by words

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This commit is contained in:
Francis Chua 2023-11-12 00:40:27 +00:00
parent 7a6bda4787
commit 14e1494a72
3 changed files with 32 additions and 18 deletions
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2
yazi-core/src/input/commands/backward.rs
View file

@ -16,7 +16,7 @@ impl Input {
let snap = self.snap();
let idx = snap.idx(snap.cursor).unwrap_or(snap.len());
let step = Self::find_word_boundary(snap.value[..idx].chars().rev(), false);
let step = Self::find_word_boundary(snap.value[..idx].chars().rev(), false, true);
self.move_(-(step as isize))
}
}

2
yazi-core/src/input/commands/forward.rs
View file

@ -20,7 +20,7 @@ impl Input {
let snap = self.snap();
let idx = snap.idx(snap.cursor).unwrap_or(snap.len());
let step = Self::find_word_boundary(snap.value[idx..].chars(), opt.end_of_word);
let step = Self::find_word_boundary(snap.value[idx..].chars(), opt.end_of_word, opt.end_of_word);
self.move_(step as isize)
}
}

30
yazi-core/src/input/input.rs
View file

@ -48,8 +48,10 @@ impl Input {
/// Searches for a word boundary and returns the movement in the cursor
/// position.
///
/// A word boundary is where the [`CharKind`] changes. However, we also skip
/// initial whitespace.
/// A word boundary is where the [`CharKind`] changes.
///
/// If `skip_whitespace_first` is true, we skip initial whitespace.
/// Otherwise, we skip whitespace after reaching a word boundary.
///
/// If `stop_before_boundary` is true, returns how many characters the cursor
/// needs to move to be at the character *BEFORE* the word boundary, or until
@ -60,25 +62,37 @@ impl Input {
pub(super) fn find_word_boundary(
input: impl Iterator<Item = char> + Clone,
stop_before_boundary: bool,
skip_whitespace_first: bool,
) -> usize {
// If we want the *NEXT* end of word, then we want to skip the current
// character.
let input = input.skip(stop_before_boundary.into());
fn count_spaces(input: impl Iterator<Item = char>) -> usize {
// Move until we don't see any more whitespace.
let spaces_count = input.clone().take_while(|c| CharKind::new(*c) == CharKind::Space).count();
let mut input = input.skip(spaces_count).peekable();
input.take_while(|c| CharKind::new(*c) == CharKind::Space).count()
}
fn count_characters(mut input: std::iter::Peekable<impl Iterator<Item = char>>) -> usize {
// Determine the current character class.
let prev = input.peek().cloned();
let Some(prev) = prev else {
return spaces_count;
return 0;
};
// Move until we see a different character class or the end of the iterator.
let character_count = input.take_while(|c| CharKind::new(*c) == CharKind::new(prev)).count();
input.take_while(|c| CharKind::new(*c) == CharKind::new(prev)).count()
}
if skip_whitespace_first {
let spaces_count = count_spaces(input.clone());
let character_count = count_characters(input.skip(spaces_count).peekable());
spaces_count + character_count
} else {
let character_count = count_characters(input.clone().peekable());
let spaces_count = count_spaces(input.skip(character_count));
spaces_count + character_count
}
}
fn delete_range(&mut self, range: impl RangeBounds<usize>) {
@ -132,14 +146,14 @@ impl Input {
| Key { code: Backspace, shift: false, ctrl: false, alt: true } => {
let snap = self.snap_mut();
let end = snap.idx(snap.cursor).unwrap_or(snap.len());
let start = end - Self::find_word_boundary(snap.value[..end].chars().rev(), false);
let start = end - Self::find_word_boundary(snap.value[..end].chars().rev(), false, false);
self.delete_range(start..end);
true
}
Key { code: C('d'), shift: false, ctrl: false, alt: true } => {
let snap = self.snap_mut();
let start = snap.idx(snap.cursor).unwrap_or(snap.len());
let end = start + Self::find_word_boundary(snap.value[start..].chars(), false);
let end = start + Self::find_word_boundary(snap.value[start..].chars(), false, true);
self.delete_range(start..end);
true
}