794 lines
34 KiB
Rust
794 lines
34 KiB
Rust
use alloc::string::String;
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use core::cmp;
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use modit::{Event, Motion, Parser, TextObject, WordIter};
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use unicode_segmentation::UnicodeSegmentation;
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use crate::{
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Action, AttrsList, BorrowedWithFontSystem, Buffer, Color, Cursor, Edit, FontSystem,
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SyntaxEditor, SyntaxTheme,
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};
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pub use modit::{ViMode, ViParser};
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#[derive(Debug)]
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pub struct ViEditor<'a> {
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editor: SyntaxEditor<'a>,
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parser: ViParser,
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passthrough: bool,
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search_opt: Option<(String, bool)>,
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}
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impl<'a> ViEditor<'a> {
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pub fn new(editor: SyntaxEditor<'a>) -> Self {
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Self {
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editor,
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parser: ViParser::new(),
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passthrough: false,
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search_opt: None,
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}
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}
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/// Modifies the theme of the [`SyntaxEditor`], returning false if the theme is missing
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pub fn update_theme(&mut self, theme_name: &str) -> bool {
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self.editor.update_theme(theme_name)
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}
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/// Load text from a file, and also set syntax to the best option
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#[cfg(feature = "std")]
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pub fn load_text<P: AsRef<std::path::Path>>(
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&mut self,
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font_system: &mut FontSystem,
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path: P,
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attrs: crate::Attrs,
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) -> std::io::Result<()> {
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self.editor.load_text(font_system, path, attrs)
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}
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/// Get the default background color
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pub fn background_color(&self) -> Color {
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self.editor.background_color()
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}
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/// Get the default foreground (text) color
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pub fn foreground_color(&self) -> Color {
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self.editor.foreground_color()
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}
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/// Get the current syntect theme
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pub fn theme(&self) -> &SyntaxTheme {
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self.editor.theme()
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}
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/// Set passthrough mode (true will turn off vi features)
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pub fn set_passthrough(&mut self, passthrough: bool) {
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if passthrough != self.passthrough {
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self.passthrough = passthrough;
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self.buffer_mut().set_redraw(true);
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}
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}
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/// Get current vi parser
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pub fn parser(&self) -> &ViParser {
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&self.parser
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}
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fn search(&mut self, inverted: bool) {
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let (search, mut forwards) = match &self.search_opt {
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Some(some) => some,
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None => return,
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};
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if inverted {
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forwards = !forwards;
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}
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let mut cursor = self.cursor();
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let start_line = cursor.line;
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if forwards {
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while cursor.line < self.buffer().lines.len() {
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if let Some(index) = self.buffer().lines[cursor.line]
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.text()
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.match_indices(search.as_str())
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.filter_map(|(i, _)| {
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if cursor.line != start_line || i > cursor.index {
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Some(i)
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} else {
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None
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}
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})
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.next()
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{
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cursor.index = index;
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self.set_cursor(cursor);
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return;
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}
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cursor.line += 1;
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}
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} else {
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cursor.line += 1;
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while cursor.line > 0 {
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cursor.line -= 1;
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if let Some(index) = self.buffer().lines[cursor.line]
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.text()
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.rmatch_indices(search.as_str())
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.filter_map(|(i, _)| {
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if cursor.line != start_line || i < cursor.index {
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Some(i)
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} else {
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None
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}
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})
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.next()
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{
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cursor.index = index;
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self.set_cursor(cursor);
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return;
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}
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}
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}
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}
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}
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impl<'a> Edit for ViEditor<'a> {
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fn buffer(&self) -> &Buffer {
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self.editor.buffer()
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}
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fn buffer_mut(&mut self) -> &mut Buffer {
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self.editor.buffer_mut()
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}
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fn cursor(&self) -> Cursor {
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self.editor.cursor()
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}
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fn set_cursor(&mut self, cursor: Cursor) {
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self.editor.set_cursor(cursor);
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}
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fn select_opt(&self) -> Option<Cursor> {
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self.editor.select_opt()
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}
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fn set_select_opt(&mut self, select_opt: Option<Cursor>) {
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self.editor.set_select_opt(select_opt);
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}
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fn tab_width(&self) -> usize {
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self.editor.tab_width()
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}
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fn set_tab_width(&mut self, tab_width: usize) {
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self.editor.set_tab_width(tab_width);
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}
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fn shape_as_needed(&mut self, font_system: &mut FontSystem) {
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self.editor.shape_as_needed(font_system);
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}
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fn copy_selection(&self) -> Option<String> {
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self.editor.copy_selection()
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}
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fn delete_selection(&mut self) -> bool {
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self.editor.delete_selection()
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}
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fn insert_string(&mut self, data: &str, attrs_list: Option<AttrsList>) {
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self.editor.insert_string(data, attrs_list);
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}
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fn action(&mut self, font_system: &mut FontSystem, action: Action) {
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let editor = &mut self.editor;
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log::info!("Action {:?}", action);
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let c = match action {
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Action::Escape => modit::ESCAPE,
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Action::Insert(c) => c,
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Action::Enter => modit::ENTER,
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Action::Backspace => modit::BACKSPACE,
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Action::Delete => modit::DELETE,
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_ => return editor.action(font_system, action),
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};
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self.parser.parse(c, false, |event| {
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log::info!(" Event {:?}", event);
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let action = match event {
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Event::AutoIndent => {
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log::info!("TODO");
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return;
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}
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Event::Backspace => Action::Backspace,
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Event::Copy => {
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log::info!("TODO");
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return;
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}
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Event::Delete => Action::Delete,
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Event::Escape => Action::Escape,
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Event::Insert(c) => Action::Insert(c),
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Event::NewLine => Action::Enter,
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Event::Paste => {
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log::info!("TODO");
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return;
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}
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Event::Redraw => {
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editor.buffer_mut().set_redraw(true);
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return;
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}
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Event::SelectClear => {
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editor.set_select_opt(None);
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return;
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}
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Event::SelectStart => {
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let cursor = editor.cursor();
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editor.set_select_opt(Some(cursor));
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return;
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}
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Event::SelectTextObject(text_object, include) => {
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fn select_in(
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editor: &mut SyntaxEditor,
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start_c: char,
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end_c: char,
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include: bool,
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) {
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// Find the largest encompasing object, or if there is none, find the next one.
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let cursor = editor.cursor();
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let buffer = editor.buffer();
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// Search forwards for isolated end character, counting start and end characters found
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let mut end = cursor;
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let mut starts = 0;
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let mut ends = 0;
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'find_end: loop {
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let line = &buffer.lines[end.line];
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let text = line.text();
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for (i, c) in text[end.index..].char_indices() {
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if c == end_c {
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ends += 1;
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} else if c == start_c {
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starts += 1;
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}
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if ends > starts {
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end.index += if include { i + c.len_utf8() } else { i };
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break 'find_end;
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}
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}
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if end.line + 1 < buffer.lines.len() {
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end.line += 1;
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end.index = 0;
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} else {
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break 'find_end;
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}
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}
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// Search backwards to resolve starts and ends
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let mut start = cursor;
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'find_start: loop {
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let line = &buffer.lines[start.line];
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let text = line.text();
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for (i, c) in text[..start.index].char_indices().rev() {
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if c == start_c {
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starts += 1;
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} else if c == end_c {
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ends += 1;
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}
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if starts >= ends {
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start.index = if include { i } else { i + c.len_utf8() };
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break 'find_start;
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}
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}
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if start.line > 0 {
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start.line -= 1;
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start.index = buffer.lines[start.line].text().len();
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} else {
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break 'find_start;
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}
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}
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editor.set_select_opt(Some(start));
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editor.set_cursor(end);
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}
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match text_object {
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TextObject::AngleBrackets => select_in(editor, '<', '>', include),
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TextObject::CurlyBrackets => select_in(editor, '{', '}', include),
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TextObject::DoubleQuotes => select_in(editor, '"', '"', include),
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TextObject::Parentheses => select_in(editor, '(', ')', include),
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TextObject::SingleQuotes => select_in(editor, '\'', '\'', include),
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TextObject::SquareBrackets => select_in(editor, '[', ']', include),
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TextObject::Ticks => select_in(editor, '`', '`', include),
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TextObject::Word(word) => {
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let mut cursor = editor.cursor();
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let mut select_opt = editor.select_opt();
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let buffer = editor.buffer();
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let text = buffer.lines[cursor.line].text();
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match WordIter::new(text, word)
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.find(|&(i, w)| i <= cursor.index && i + w.len() > cursor.index)
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{
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Some((i, w)) => {
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cursor.index = i;
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select_opt = Some(cursor);
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cursor.index += w.len();
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}
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None => {
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//TODO
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}
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}
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editor.set_select_opt(select_opt);
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editor.set_cursor(cursor);
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}
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_ => {
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log::info!("TODO: {:?}", text_object);
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}
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}
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return;
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}
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Event::ShiftLeft => Action::Unindent,
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Event::ShiftRight => Action::Indent,
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Event::SwapCase => {
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log::info!("TODO");
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return;
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}
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Event::Undo => {
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log::info!("TODO");
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return;
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}
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Event::Motion(motion, count) => {
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for _ in 0..count {
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let action = match motion {
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Motion::Down => Action::Down,
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Motion::End => Action::End,
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Motion::GotoLine(line) => Action::GotoLine(line.saturating_sub(1)),
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Motion::GotoEof => {
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Action::GotoLine(editor.buffer().lines.len().saturating_sub(1))
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}
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Motion::Home => Action::Home,
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Motion::Left => Action::Left,
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Motion::NextChar(find_c) => {
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let mut cursor = editor.cursor();
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let buffer = editor.buffer();
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let text = buffer.lines[cursor.line].text();
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if cursor.index < text.len() {
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match text[cursor.index..]
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.char_indices()
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.filter(|&(i, c)| i > 0 && c == find_c)
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.next()
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{
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Some((i, _)) => {
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cursor.index += i;
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editor.set_cursor(cursor);
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}
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None => {}
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}
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}
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continue;
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}
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Motion::NextCharTill(find_c) => {
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let mut cursor = editor.cursor();
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let buffer = editor.buffer();
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let text = buffer.lines[cursor.line].text();
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if cursor.index < text.len() {
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let mut last_i = 0;
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for (i, c) in text[cursor.index..].char_indices() {
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if last_i > 0 && c == find_c {
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cursor.index += last_i;
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editor.set_cursor(cursor);
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break;
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} else {
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last_i = i;
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}
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}
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}
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continue;
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}
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Motion::NextWordEnd(word) => {
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let mut cursor = editor.cursor();
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let buffer = editor.buffer();
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loop {
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let text = buffer.lines[cursor.line].text();
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if cursor.index < text.len() {
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cursor.index = WordIter::new(text, word)
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.map(|(i, w)| {
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i + w
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.char_indices()
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.last()
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.map(|(i, _)| i)
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.unwrap_or(0)
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})
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.find(|&i| i > cursor.index)
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.unwrap_or(text.len());
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if cursor.index == text.len() {
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// Try again, searching next line
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continue;
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}
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} else if cursor.line + 1 < buffer.lines.len() {
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// Go to next line and rerun loop
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cursor.line += 1;
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cursor.index = 0;
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continue;
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}
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break;
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}
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editor.set_cursor(cursor);
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continue;
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}
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Motion::NextWordStart(word) => {
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let mut cursor = editor.cursor();
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let buffer = editor.buffer();
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loop {
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let text = buffer.lines[cursor.line].text();
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if cursor.index < text.len() {
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cursor.index = WordIter::new(text, word)
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.map(|(i, _)| i)
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.find(|&i| i > cursor.index)
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.unwrap_or(text.len());
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if cursor.index == text.len() {
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// Try again, searching next line
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continue;
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}
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} else if cursor.line + 1 < buffer.lines.len() {
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// Go to next line and rerun loop
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cursor.line += 1;
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cursor.index = 0;
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continue;
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}
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break;
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}
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editor.set_cursor(cursor);
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continue;
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}
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Motion::PreviousChar(find_c) => {
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let mut cursor = editor.cursor();
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let buffer = editor.buffer();
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let text = buffer.lines[cursor.line].text();
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if cursor.index > 0 {
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match text[..cursor.index]
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.char_indices()
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.filter(|&(_, c)| c == find_c)
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.last()
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{
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Some((i, _)) => {
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cursor.index = i;
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editor.set_cursor(cursor);
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}
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None => {}
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}
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}
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continue;
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}
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Motion::PreviousCharTill(find_c) => {
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let mut cursor = editor.cursor();
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let buffer = editor.buffer();
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let text = buffer.lines[cursor.line].text();
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if cursor.index > 0 {
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match text[..cursor.index]
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.char_indices()
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.filter_map(|(i, c)| {
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if c == find_c {
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let end = i + c.len_utf8();
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if end < cursor.index {
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return Some(end);
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}
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}
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None
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})
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.last()
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{
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Some(i) => {
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cursor.index = i;
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editor.set_cursor(cursor);
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}
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None => {}
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}
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}
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continue;
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}
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Motion::PreviousWordEnd(word) => {
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let mut cursor = editor.cursor();
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let buffer = editor.buffer();
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loop {
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let text = buffer.lines[cursor.line].text();
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if cursor.index > 0 {
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cursor.index = WordIter::new(text, word)
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.map(|(i, w)| {
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i + w
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.char_indices()
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.last()
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.map(|(i, _)| i)
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.unwrap_or(0)
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})
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.filter(|&i| i < cursor.index)
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.last()
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.unwrap_or(0);
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if cursor.index == 0 {
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// Try again, searching previous line
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continue;
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}
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} else if cursor.line > 0 {
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// Go to previous line and rerun loop
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cursor.line -= 1;
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cursor.index = buffer.lines[cursor.line].text().len();
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continue;
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}
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break;
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}
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editor.set_cursor(cursor);
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continue;
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}
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Motion::PreviousWordStart(word) => {
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let mut cursor = editor.cursor();
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let buffer = editor.buffer();
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loop {
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let text = buffer.lines[cursor.line].text();
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if cursor.index > 0 {
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cursor.index = WordIter::new(text, word)
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.map(|(i, _)| i)
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.filter(|&i| i < cursor.index)
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.last()
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.unwrap_or(0);
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if cursor.index == 0 {
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// Try again, searching previous line
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continue;
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}
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} else if cursor.line > 0 {
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// Go to previous line and rerun loop
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cursor.line -= 1;
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cursor.index = buffer.lines[cursor.line].text().len();
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continue;
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}
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break;
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}
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editor.set_cursor(cursor);
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continue;
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}
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Motion::Right => Action::Right,
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Motion::SoftHome => Action::SoftHome,
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Motion::Up => Action::Up,
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_ => {
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log::info!("TODO: {:?}", motion);
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break;
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}
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};
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editor.action(font_system, action);
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}
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return;
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}
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};
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editor.action(font_system, action);
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});
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}
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#[cfg(feature = "swash")]
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fn draw<F>(
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&self,
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font_system: &mut FontSystem,
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cache: &mut crate::SwashCache,
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color: Color,
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mut f: F,
|
|
) where
|
|
F: FnMut(i32, i32, u32, u32, Color),
|
|
{
|
|
let size = self.buffer().size();
|
|
f(0, 0, size.0 as u32, size.1 as u32, self.background_color());
|
|
|
|
let font_size = self.buffer().metrics().font_size;
|
|
let line_height = self.buffer().metrics().line_height;
|
|
|
|
for run in self.buffer().layout_runs() {
|
|
let line_i = run.line_i;
|
|
let line_y = run.line_y;
|
|
let line_top = run.line_top;
|
|
|
|
let cursor_glyph_opt = |cursor: &Cursor| -> Option<(usize, f32, f32)> {
|
|
//TODO: better calculation of width
|
|
let default_width = font_size / 2.0;
|
|
if cursor.line == line_i {
|
|
for (glyph_i, glyph) in run.glyphs.iter().enumerate() {
|
|
if cursor.index >= glyph.start && cursor.index < glyph.end {
|
|
// Guess x offset based on characters
|
|
let mut before = 0;
|
|
let mut total = 0;
|
|
|
|
let cluster = &run.text[glyph.start..glyph.end];
|
|
for (i, _) in cluster.grapheme_indices(true) {
|
|
if glyph.start + i < cursor.index {
|
|
before += 1;
|
|
}
|
|
total += 1;
|
|
}
|
|
|
|
let width = glyph.w / (total as f32);
|
|
let offset = (before as f32) * width;
|
|
return Some((glyph_i, offset, width));
|
|
}
|
|
}
|
|
match run.glyphs.last() {
|
|
Some(glyph) => {
|
|
if cursor.index == glyph.end {
|
|
return Some((run.glyphs.len(), 0.0, default_width));
|
|
}
|
|
}
|
|
None => {
|
|
return Some((0, 0.0, default_width));
|
|
}
|
|
}
|
|
}
|
|
None
|
|
};
|
|
|
|
// Highlight selection (TODO: HIGHLIGHT COLOR!)
|
|
if let Some(select) = self.select_opt() {
|
|
let (start, end) = match select.line.cmp(&self.cursor().line) {
|
|
cmp::Ordering::Greater => (self.cursor(), select),
|
|
cmp::Ordering::Less => (select, self.cursor()),
|
|
cmp::Ordering::Equal => {
|
|
/* select.line == self.cursor.line */
|
|
if select.index < self.cursor().index {
|
|
(select, self.cursor())
|
|
} else {
|
|
/* select.index >= self.cursor.index */
|
|
(self.cursor(), select)
|
|
}
|
|
}
|
|
};
|
|
|
|
if line_i >= start.line && line_i <= end.line {
|
|
let mut range_opt = None;
|
|
for glyph in run.glyphs.iter() {
|
|
// Guess x offset based on characters
|
|
let cluster = &run.text[glyph.start..glyph.end];
|
|
let total = cluster.grapheme_indices(true).count();
|
|
let mut c_x = glyph.x;
|
|
let c_w = glyph.w / total as f32;
|
|
for (i, c) in cluster.grapheme_indices(true) {
|
|
let c_start = glyph.start + i;
|
|
let c_end = glyph.start + i + c.len();
|
|
if (start.line != line_i || c_end > start.index)
|
|
&& (end.line != line_i || c_start < end.index)
|
|
{
|
|
range_opt = match range_opt.take() {
|
|
Some((min, max)) => Some((
|
|
cmp::min(min, c_x as i32),
|
|
cmp::max(max, (c_x + c_w) as i32),
|
|
)),
|
|
None => Some((c_x as i32, (c_x + c_w) as i32)),
|
|
};
|
|
} else if let Some((min, max)) = range_opt.take() {
|
|
f(
|
|
min,
|
|
line_top as i32,
|
|
cmp::max(0, max - min) as u32,
|
|
line_height as u32,
|
|
Color::rgba(color.r(), color.g(), color.b(), 0x33),
|
|
);
|
|
}
|
|
c_x += c_w;
|
|
}
|
|
}
|
|
|
|
if run.glyphs.is_empty() && end.line > line_i {
|
|
// Highlight all of internal empty lines
|
|
range_opt = Some((0, self.buffer().size().0 as i32));
|
|
}
|
|
|
|
if let Some((mut min, mut max)) = range_opt.take() {
|
|
if end.line > line_i {
|
|
// Draw to end of line
|
|
if run.rtl {
|
|
min = 0;
|
|
} else {
|
|
max = self.buffer().size().0 as i32;
|
|
}
|
|
}
|
|
f(
|
|
min,
|
|
line_top as i32,
|
|
cmp::max(0, max - min) as u32,
|
|
line_height as u32,
|
|
Color::rgba(color.r(), color.g(), color.b(), 0x33),
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Draw cursor
|
|
if let Some((cursor_glyph, cursor_glyph_offset, cursor_glyph_width)) =
|
|
cursor_glyph_opt(&self.cursor())
|
|
{
|
|
let block_cursor = if self.passthrough {
|
|
false
|
|
} else {
|
|
match self.parser.mode {
|
|
ViMode::Insert | ViMode::Replace => false,
|
|
_ => true, /*TODO: determine block cursor in other modes*/
|
|
}
|
|
};
|
|
|
|
let (start_x, end_x) = match run.glyphs.get(cursor_glyph) {
|
|
Some(glyph) => {
|
|
// Start of detected glyph
|
|
if glyph.level.is_rtl() {
|
|
(
|
|
(glyph.x + glyph.w - cursor_glyph_offset) as i32,
|
|
(glyph.x + glyph.w - cursor_glyph_offset - cursor_glyph_width)
|
|
as i32,
|
|
)
|
|
} else {
|
|
(
|
|
(glyph.x + cursor_glyph_offset) as i32,
|
|
(glyph.x + cursor_glyph_offset + cursor_glyph_width) as i32,
|
|
)
|
|
}
|
|
}
|
|
None => match run.glyphs.last() {
|
|
Some(glyph) => {
|
|
// End of last glyph
|
|
if glyph.level.is_rtl() {
|
|
(glyph.x as i32, (glyph.x - cursor_glyph_width) as i32)
|
|
} else {
|
|
(
|
|
(glyph.x + glyph.w) as i32,
|
|
(glyph.x + glyph.w + cursor_glyph_width) as i32,
|
|
)
|
|
}
|
|
}
|
|
None => {
|
|
// Start of empty line
|
|
(0, cursor_glyph_width as i32)
|
|
}
|
|
},
|
|
};
|
|
|
|
if block_cursor {
|
|
let left_x = cmp::min(start_x, end_x);
|
|
let right_x = cmp::max(start_x, end_x);
|
|
f(
|
|
left_x,
|
|
line_top as i32,
|
|
(right_x - left_x) as u32,
|
|
line_height as u32,
|
|
Color::rgba(color.r(), color.g(), color.b(), 0x33),
|
|
);
|
|
} else {
|
|
f(start_x, line_top as i32, 1, line_height as u32, color);
|
|
}
|
|
}
|
|
|
|
for glyph in run.glyphs.iter() {
|
|
let physical_glyph = glyph.physical((0., 0.), 1.0);
|
|
|
|
let glyph_color = match glyph.color_opt {
|
|
Some(some) => some,
|
|
None => color,
|
|
};
|
|
|
|
cache.with_pixels(
|
|
font_system,
|
|
physical_glyph.cache_key,
|
|
glyph_color,
|
|
|x, y, color| {
|
|
f(
|
|
physical_glyph.x + x,
|
|
line_y as i32 + physical_glyph.y + y,
|
|
1,
|
|
1,
|
|
color,
|
|
);
|
|
},
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<'a, 'b> BorrowedWithFontSystem<'b, ViEditor<'a>> {
|
|
/// Load text from a file, and also set syntax to the best option
|
|
#[cfg(feature = "std")]
|
|
pub fn load_text<P: AsRef<std::path::Path>>(
|
|
&mut self,
|
|
path: P,
|
|
attrs: crate::Attrs,
|
|
) -> std::io::Result<()> {
|
|
self.inner.load_text(self.font_system, path, attrs)
|
|
}
|
|
}
|