diff options
Diffstat (limited to 'helix-term/src/commands.rs')
| -rw-r--r-- | helix-term/src/commands.rs | 141 |
1 files changed, 111 insertions, 30 deletions
diff --git a/helix-term/src/commands.rs b/helix-term/src/commands.rs index f87a440d..8866b79b 100644 --- a/helix-term/src/commands.rs +++ b/helix-term/src/commands.rs @@ -1,12 +1,15 @@ use helix_core::{ comment, coords_at_pos, find_first_non_whitespace_char, find_root, graphemes, indent, + line_ending::{ + get_line_ending, get_line_ending_of_str, line_end_char_index, str_is_line_ending, + }, match_brackets, movement::{self, Direction}, object, pos_at_coords, regex::{self, Regex}, register::{self, Register, Registers}, - search, selection, Change, ChangeSet, Position, Range, Rope, RopeSlice, Selection, SmallVec, - Tendril, Transaction, + search, selection, Change, ChangeSet, LineEnding, Position, Range, Rope, RopeGraphemes, + RopeSlice, Selection, SmallVec, Tendril, Transaction, DEFAULT_LINE_ENDING, }; use helix_view::{ @@ -303,9 +306,8 @@ fn move_line_end(cx: &mut Context) { let text = doc.text(); let line = text.char_to_line(range.head); - // Line end is pos at the start of next line - 1 - // subtract another 1 because the line ends with \n - let pos = text.line_to_char(line + 1).saturating_sub(2); + let pos = line_end_char_index(&text.slice(..), line); + Range::new(pos, pos) }); @@ -452,12 +454,28 @@ where let count = cx.count(); // need to wait for next key + // TODO: should this be done by grapheme rather than char? For example, + // we can't properly handle the line-ending CRLF case here in terms of char. cx.on_next_key(move |cx, event| { let ch = match event { KeyEvent { code: KeyCode::Enter, .. - } => '\n', + } => + // TODO: this isn't quite correct when CRLF is involved. + // This hack will work in most cases, since documents don't + // usually mix line endings. But we should fix it eventually + // anyway. + { + current!(cx.editor) + .1 + .line_ending + .as_str() + .chars() + .next() + .unwrap() + } + KeyEvent { code: KeyCode::Char(ch), .. @@ -575,32 +593,37 @@ fn extend_first_nonwhitespace(cx: &mut Context) { } fn replace(cx: &mut Context) { + let mut buf = [0u8; 4]; // To hold utf8 encoded char. + // need to wait for next key cx.on_next_key(move |cx, event| { + let (view, doc) = current!(cx.editor); let ch = match event { KeyEvent { code: KeyCode::Char(ch), .. - } => Some(ch), + } => Some(&ch.encode_utf8(&mut buf[..])[..]), KeyEvent { code: KeyCode::Enter, .. - } => Some('\n'), + } => Some(doc.line_ending.as_str()), _ => None, }; if let Some(ch) = ch { - let (view, doc) = current!(cx.editor); - let transaction = Transaction::change_by_selection(doc.text(), doc.selection(view.id), |range| { let max_to = doc.text().len_chars().saturating_sub(1); let to = std::cmp::min(max_to, range.to() + 1); - let text: String = doc - .text() - .slice(range.from()..to) - .chars() - .map(|c| if c == '\n' { '\n' } else { ch }) + let text: String = RopeGraphemes::new(doc.text().slice(range.from()..to)) + .map(|g| { + let cow: Cow<str> = g.into(); + if str_is_line_ending(&cow) { + cow + } else { + ch.into() + } + }) .collect(); (range.from(), to, Some(text.into())) @@ -725,9 +748,8 @@ fn extend_line_end(cx: &mut Context) { let text = doc.text(); let line = text.char_to_line(range.head); - // Line end is pos at the start of next line - 1 - // subtract another 1 because the line ends with \n - let pos = text.line_to_char(line + 1).saturating_sub(2); + let pos = line_end_char_index(&text.slice(..), line); + Range::new(range.anchor, pos) }); @@ -783,7 +805,8 @@ fn split_selection_on_newline(cx: &mut Context) { let text = doc.text().slice(..); // only compile the regex once #[allow(clippy::trivial_regex)] - static REGEX: Lazy<Regex> = Lazy::new(|| Regex::new(r"\n").unwrap()); + static REGEX: Lazy<Regex> = + Lazy::new(|| Regex::new(r"\r\n|[\n\r\u{000B}\u{000C}\u{0085}\u{2028}\u{2029}]").unwrap()); let selection = selection::split_on_matches(text, doc.selection(view.id), ®EX); doc.set_selection(view.id, selection); } @@ -922,7 +945,13 @@ fn delete_selection_impl(reg: &mut Register, doc: &mut Document, view_id: ViewId // then delete let transaction = Transaction::change_by_selection(doc.text(), doc.selection(view_id), |range| { - let max_to = doc.text().len_chars().saturating_sub(1); + let alltext = doc.text(); + let line = alltext.char_to_line(range.head); + let max_to = doc.text().len_chars().saturating_sub( + get_line_ending(&alltext.line(line)) + .map(|le| le.len_chars()) + .unwrap_or(0), + ); let to = std::cmp::min(max_to, range.to() + 1); (range.from(), to, None) }); @@ -1003,7 +1032,7 @@ fn append_mode(cx: &mut Context) { if selection.iter().any(|range| range.head == end) { let transaction = Transaction::change( doc.text(), - std::array::IntoIter::new([(end, end, Some(Tendril::from_char('\n')))]), + std::array::IntoIter::new([(end, end, Some(doc.line_ending.as_str().into()))]), ); doc.apply(&transaction, view.id); } @@ -1131,6 +1160,45 @@ mod cmd { } } + /// Sets or reports the current document's line ending setting. + fn set_line_ending(editor: &mut Editor, args: &[&str], event: PromptEvent) { + use LineEnding::*; + + // If no argument, report current line ending setting. + if args.is_empty() { + let line_ending = current!(editor).1.line_ending; + editor.set_status(match line_ending { + Crlf => "crlf".into(), + LF => "line feed".into(), + FF => "form feed".into(), + CR => "carriage return".into(), + Nel => "next line".into(), + + // These should never be a document's default line ending. + VT | LS | PS => "error".into(), + }); + return; + } + + // Attempt to parse argument as a line ending. + let line_ending = match args.get(0) { + // We check for CR first because it shares a common prefix with CRLF. + Some(arg) if "cr".starts_with(&arg.to_lowercase()) => Some(CR), + Some(arg) if "crlf".starts_with(&arg.to_lowercase()) => Some(Crlf), + Some(arg) if "lf".starts_with(&arg.to_lowercase()) => Some(LF), + Some(arg) if "ff".starts_with(&arg.to_lowercase()) => Some(FF), + Some(arg) if "nel".starts_with(&arg.to_lowercase()) => Some(Nel), + _ => None, + }; + + if let Some(le) = line_ending { + doc_mut!(editor).line_ending = le; + } else { + // Invalid argument. + editor.set_error(format!("invalid line ending '{}'", args[0],)); + } + } + fn earlier(editor: &mut Editor, args: &[&str], event: PromptEvent) { let uk = match args.join(" ").parse::<helix_core::history::UndoKind>() { Ok(uk) => uk, @@ -1274,7 +1342,11 @@ mod cmd { } fn yank_joined_to_clipboard(editor: &mut Editor, args: &[&str], _: PromptEvent) { - let separator = args.first().copied().unwrap_or("\n"); + let (_, doc) = current!(editor); + let separator = args + .first() + .copied() + .unwrap_or_else(|| doc.line_ending.as_str()); yank_joined_to_clipboard_impl(editor, separator); } @@ -1360,6 +1432,13 @@ mod cmd { completer: None, }, TypableCommand { + name: "line-ending", + alias: None, + doc: "Set the document's default line ending. Options: crlf, lf, cr, ff, nel.", + fun: set_line_ending, + completer: None, + }, + TypableCommand { name: "earlier", alias: Some("ear"), doc: "Jump back to an earlier point in edit history. Accepts a number of steps or a time span.", @@ -1683,8 +1762,7 @@ fn append_to_line(cx: &mut Context) { let selection = doc.selection(view.id).transform(|range| { let text = doc.text(); let line = text.char_to_line(range.head); - // we can't use line_to_char(line + 1) - 2 because the last line might not contain \n - let pos = (text.line_to_char(line) + text.line(line).len_chars()).saturating_sub(1); + let pos = line_end_char_index(&text.slice(..), line); Range::new(pos, pos) }); doc.set_selection(view.id, selection); @@ -1731,7 +1809,7 @@ fn open(cx: &mut Context, open: Open) { let indent = doc.indent_unit().repeat(indent_level); let indent_len = indent.len(); let mut text = String::with_capacity(1 + indent_len); - text.push('\n'); + text.push_str(doc.line_ending.as_str()); text.push_str(&indent); let text = text.repeat(count); @@ -2344,7 +2422,7 @@ pub mod insert { ); let indent = doc.indent_unit().repeat(indent_level); let mut text = String::with_capacity(1 + indent.len()); - text.push('\n'); + text.push_str(doc.line_ending.as_str()); text.push_str(&indent); let head = pos + offs + text.chars().count(); @@ -2365,7 +2443,7 @@ pub mod insert { if helix_core::auto_pairs::PAIRS.contains(&(prev, curr)) { // another newline, indent the end bracket one level less let indent = doc.indent_unit().repeat(indent_level.saturating_sub(1)); - text.push('\n'); + text.push_str(doc.line_ending.as_str()); text.push_str(&indent); } @@ -2488,7 +2566,8 @@ fn yank_joined_to_clipboard_impl(editor: &mut Editor, separator: &str) { } fn yank_joined_to_clipboard(cx: &mut Context) { - yank_joined_to_clipboard_impl(&mut cx.editor, "\n"); + let line_ending = current!(cx.editor).1.line_ending; + yank_joined_to_clipboard_impl(&mut cx.editor, line_ending.as_str()); } fn yank_main_selection_to_clipboard_impl(editor: &mut Editor) { @@ -2529,8 +2608,10 @@ fn paste_impl( .unwrap(), ); - // if any of values ends \n it's linewise paste - let linewise = values.iter().any(|value| value.ends_with('\n')); + // if any of values ends with a line ending, it's linewise paste + let linewise = values + .iter() + .any(|value| get_line_ending_of_str(value).is_some()); let mut values = values.iter().cloned().map(Tendril::from).chain(repeat); |