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-rw-r--r--helix-view/src/document.rs84
-rw-r--r--helix-view/src/editor.rs3
-rw-r--r--helix-view/src/info.rs57
-rw-r--r--helix-view/src/input.rs165
-rw-r--r--helix-view/src/lib.rs1
5 files changed, 249 insertions, 61 deletions
diff --git a/helix-view/src/document.rs b/helix-view/src/document.rs
index 86f3dfb8..b917b902 100644
--- a/helix-view/src/document.rs
+++ b/helix-view/src/document.rs
@@ -70,7 +70,6 @@ pub enum IndentStyle {
}
pub struct Document {
- // rope + selection
pub(crate) id: DocumentId,
text: Rope,
pub(crate) selections: HashMap<ViewId, Selection>,
@@ -307,6 +306,19 @@ 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)
@@ -395,12 +407,13 @@ pub fn normalize_path(path: &Path) -> PathBuf {
/// This function is used instead of `std::fs::canonicalize` because we don't want to verify
/// here if the path exists, just normalize it's components.
pub fn canonicalize_path(path: &Path) -> std::io::Result<PathBuf> {
- let normalized = normalize_path(path);
- if normalized.is_absolute() {
- Ok(normalized)
+ let path = if path.is_relative() {
+ std::env::current_dir().map(|current_dir| current_dir.join(path))?
} else {
- std::env::current_dir().map(|current_dir| current_dir.join(normalized))
- }
+ path.to_path_buf()
+ };
+
+ Ok(normalize_path(&path))
}
use helix_lsp::lsp;
@@ -448,7 +461,8 @@ impl Document {
}
let mut file = std::fs::File::open(&path).context(format!("unable to open {:?}", path))?;
- let (rope, encoding) = from_reader(&mut file, encoding)?;
+ let (mut rope, encoding) = from_reader(&mut file, encoding)?;
+ let line_ending = with_line_ending(&mut rope);
let mut doc = Self::from(rope, Some(encoding));
@@ -458,9 +472,9 @@ impl Document {
doc.detect_language(theme, loader);
}
- // Detect indentation style and line ending.
+ // Detect indentation style and set line ending.
doc.detect_indent_style();
- doc.line_ending = auto_detect_line_ending(&doc.text).unwrap_or(DEFAULT_LINE_ENDING);
+ doc.line_ending = line_ending;
Ok(doc)
}
@@ -578,6 +592,45 @@ impl Document {
}
}
+ /// Reload the document from its path.
+ pub fn reload(&mut self, view_id: ViewId) -> Result<(), Error> {
+ let encoding = &self.encoding;
+ let path = self.path().filter(|path| path.exists());
+
+ // If there is no path or the path no longer exists.
+ if path.is_none() {
+ return Err(anyhow!("can't find file to reload from"));
+ }
+
+ 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 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.
+ self.detect_indent_style();
+ self.line_ending = line_ending;
+
+ Ok(())
+ }
+
+ /// Sets the [`Document`]'s encoding with the encoding correspondent to `label`.
+ pub fn set_encoding(&mut self, label: &str) -> Result<(), Error> {
+ match encoding_rs::Encoding::for_label(label.as_bytes()) {
+ Some(encoding) => self.encoding = encoding,
+ None => return Err(anyhow::anyhow!("unknown encoding")),
+ }
+ Ok(())
+ }
+
+ /// Returns the [`Document`]'s current encoding.
+ pub fn encoding(&self) -> &'static encoding_rs::Encoding {
+ self.encoding
+ }
+
fn detect_indent_style(&mut self) {
// Build a histogram of the indentation *increases* between
// subsequent lines, ignoring lines that are all whitespace.
@@ -996,14 +1049,11 @@ impl Document {
let cwdir = std::env::current_dir().expect("couldn't determine current directory");
self.path.as_ref().map(|path| {
- let path = fold_home_dir(path);
- if path.is_relative() {
- path
- } else {
- path.strip_prefix(cwdir)
- .map(|p| p.to_path_buf())
- .unwrap_or(path)
- }
+ let mut path = path.as_path();
+ if path.is_absolute() {
+ path = path.strip_prefix(cwdir).unwrap_or(path)
+ };
+ fold_home_dir(path)
})
}
diff --git a/helix-view/src/editor.rs b/helix-view/src/editor.rs
index a16cc50f..4f01cce4 100644
--- a/helix-view/src/editor.rs
+++ b/helix-view/src/editor.rs
@@ -1,6 +1,7 @@
use crate::{
clipboard::{get_clipboard_provider, ClipboardProvider},
graphics::{CursorKind, Rect},
+ info::Info,
theme::{self, Theme},
tree::Tree,
Document, DocumentId, RegisterSelection, View, ViewId,
@@ -32,6 +33,7 @@ pub struct Editor {
pub syn_loader: Arc<syntax::Loader>,
pub theme_loader: Arc<theme::Loader>,
+ pub autoinfo: Option<&'static Info>,
pub status_msg: Option<(String, Severity)>,
}
@@ -64,6 +66,7 @@ impl Editor {
theme_loader: themes,
registers: Registers::default(),
clipboard_provider: get_clipboard_provider(),
+ autoinfo: None,
status_msg: None,
}
}
diff --git a/helix-view/src/info.rs b/helix-view/src/info.rs
new file mode 100644
index 00000000..f3df50fe
--- /dev/null
+++ b/helix-view/src/info.rs
@@ -0,0 +1,57 @@
+use crate::input::KeyEvent;
+use helix_core::unicode::width::UnicodeWidthStr;
+use std::fmt::Write;
+
+#[derive(Debug)]
+/// Info box used in editor. Rendering logic will be in other crate.
+pub struct Info {
+ /// Title kept as static str for now.
+ pub title: &'static str,
+ /// Text body, should contains newline.
+ pub text: String,
+ /// Body width.
+ pub width: u16,
+ /// Body height.
+ pub height: u16,
+}
+
+impl Info {
+ pub fn key(title: &'static str, body: Vec<(&[KeyEvent], &'static str)>) -> Info {
+ let (lpad, mpad, rpad) = (1, 2, 1);
+ let keymaps_width: u16 = body
+ .iter()
+ .map(|r| r.0.iter().map(|e| e.width() as u16 + 2).sum::<u16>() - 2)
+ .max()
+ .unwrap();
+ let mut text = String::new();
+ let mut width = 0;
+ let height = body.len() as u16;
+ for (keyevents, desc) in body {
+ let keyevent = keyevents[0];
+ let mut left = keymaps_width - keyevent.width() as u16;
+ for _ in 0..lpad {
+ text.push(' ');
+ }
+ write!(text, "{}", keyevent).ok();
+ for keyevent in &keyevents[1..] {
+ write!(text, ", {}", keyevent).ok();
+ left -= 2 + keyevent.width() as u16;
+ }
+ for _ in 0..left + mpad {
+ text.push(' ');
+ }
+ let desc = desc.trim();
+ let w = lpad + keymaps_width + mpad + (desc.width() as u16) + rpad;
+ if w > width {
+ width = w;
+ }
+ writeln!(text, "{}", desc).ok();
+ }
+ Info {
+ title,
+ text,
+ width,
+ height,
+ }
+ }
+}
diff --git a/helix-view/src/input.rs b/helix-view/src/input.rs
index 5f61ce14..2847bb69 100644
--- a/helix-view/src/input.rs
+++ b/helix-view/src/input.rs
@@ -1,5 +1,6 @@
//! Input event handling, currently backed by crossterm.
use anyhow::{anyhow, Error};
+use helix_core::unicode::width::UnicodeWidthStr;
use serde::de::{self, Deserialize, Deserializer};
use std::fmt;
@@ -13,6 +14,32 @@ pub struct KeyEvent {
pub modifiers: KeyModifiers,
}
+pub(crate) mod keys {
+ pub(crate) const BACKSPACE: &str = "backspace";
+ pub(crate) const ENTER: &str = "ret";
+ pub(crate) const LEFT: &str = "left";
+ pub(crate) const RIGHT: &str = "right";
+ pub(crate) const UP: &str = "up";
+ pub(crate) const DOWN: &str = "down";
+ pub(crate) const HOME: &str = "home";
+ pub(crate) const END: &str = "end";
+ pub(crate) const PAGEUP: &str = "pageup";
+ pub(crate) const PAGEDOWN: &str = "pagedown";
+ pub(crate) const TAB: &str = "tab";
+ pub(crate) const BACKTAB: &str = "backtab";
+ pub(crate) const DELETE: &str = "del";
+ pub(crate) const INSERT: &str = "ins";
+ pub(crate) const NULL: &str = "null";
+ pub(crate) const ESC: &str = "esc";
+ pub(crate) const SPACE: &str = "space";
+ pub(crate) const LESS_THAN: &str = "lt";
+ pub(crate) const GREATER_THAN: &str = "gt";
+ pub(crate) const PLUS: &str = "plus";
+ pub(crate) const MINUS: &str = "minus";
+ pub(crate) const SEMICOLON: &str = "semicolon";
+ pub(crate) const PERCENT: &str = "percent";
+}
+
impl fmt::Display for KeyEvent {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> std::fmt::Result {
f.write_fmt(format_args!(
@@ -34,28 +61,29 @@ impl fmt::Display for KeyEvent {
},
))?;
match self.code {
- KeyCode::Backspace => f.write_str("backspace")?,
- KeyCode::Enter => f.write_str("ret")?,
- KeyCode::Left => f.write_str("left")?,
- KeyCode::Right => f.write_str("right")?,
- KeyCode::Up => f.write_str("up")?,
- KeyCode::Down => f.write_str("down")?,
- KeyCode::Home => f.write_str("home")?,
- KeyCode::End => f.write_str("end")?,
- KeyCode::PageUp => f.write_str("pageup")?,
- KeyCode::PageDown => f.write_str("pagedown")?,
- KeyCode::Tab => f.write_str("tab")?,
- KeyCode::BackTab => f.write_str("backtab")?,
- KeyCode::Delete => f.write_str("del")?,
- KeyCode::Insert => f.write_str("ins")?,
- KeyCode::Null => f.write_str("null")?,
- KeyCode::Esc => f.write_str("esc")?,
- KeyCode::Char('<') => f.write_str("lt")?,
- KeyCode::Char('>') => f.write_str("gt")?,
- KeyCode::Char('+') => f.write_str("plus")?,
- KeyCode::Char('-') => f.write_str("minus")?,
- KeyCode::Char(';') => f.write_str("semicolon")?,
- KeyCode::Char('%') => f.write_str("percent")?,
+ KeyCode::Backspace => f.write_str(keys::BACKSPACE)?,
+ KeyCode::Enter => f.write_str(keys::ENTER)?,
+ KeyCode::Left => f.write_str(keys::LEFT)?,
+ KeyCode::Right => f.write_str(keys::RIGHT)?,
+ KeyCode::Up => f.write_str(keys::UP)?,
+ KeyCode::Down => f.write_str(keys::DOWN)?,
+ KeyCode::Home => f.write_str(keys::HOME)?,
+ KeyCode::End => f.write_str(keys::END)?,
+ KeyCode::PageUp => f.write_str(keys::PAGEUP)?,
+ KeyCode::PageDown => f.write_str(keys::PAGEDOWN)?,
+ KeyCode::Tab => f.write_str(keys::TAB)?,
+ KeyCode::BackTab => f.write_str(keys::BACKTAB)?,
+ KeyCode::Delete => f.write_str(keys::DELETE)?,
+ KeyCode::Insert => f.write_str(keys::INSERT)?,
+ KeyCode::Null => f.write_str(keys::NULL)?,
+ KeyCode::Esc => f.write_str(keys::ESC)?,
+ KeyCode::Char(' ') => f.write_str(keys::SPACE)?,
+ KeyCode::Char('<') => f.write_str(keys::LESS_THAN)?,
+ KeyCode::Char('>') => f.write_str(keys::GREATER_THAN)?,
+ KeyCode::Char('+') => f.write_str(keys::PLUS)?,
+ KeyCode::Char('-') => f.write_str(keys::MINUS)?,
+ KeyCode::Char(';') => f.write_str(keys::SEMICOLON)?,
+ KeyCode::Char('%') => f.write_str(keys::PERCENT)?,
KeyCode::F(i) => f.write_fmt(format_args!("F{}", i))?,
KeyCode::Char(c) => f.write_fmt(format_args!("{}", c))?,
};
@@ -63,34 +91,83 @@ impl fmt::Display for KeyEvent {
}
}
+impl UnicodeWidthStr for KeyEvent {
+ fn width(&self) -> usize {
+ use helix_core::unicode::width::UnicodeWidthChar;
+ let mut width = match self.code {
+ KeyCode::Backspace => keys::BACKSPACE.len(),
+ KeyCode::Enter => keys::ENTER.len(),
+ KeyCode::Left => keys::LEFT.len(),
+ KeyCode::Right => keys::RIGHT.len(),
+ KeyCode::Up => keys::UP.len(),
+ KeyCode::Down => keys::DOWN.len(),
+ KeyCode::Home => keys::HOME.len(),
+ KeyCode::End => keys::END.len(),
+ KeyCode::PageUp => keys::PAGEUP.len(),
+ KeyCode::PageDown => keys::PAGEDOWN.len(),
+ KeyCode::Tab => keys::TAB.len(),
+ KeyCode::BackTab => keys::BACKTAB.len(),
+ KeyCode::Delete => keys::DELETE.len(),
+ KeyCode::Insert => keys::INSERT.len(),
+ KeyCode::Null => keys::NULL.len(),
+ KeyCode::Esc => keys::ESC.len(),
+ KeyCode::Char(' ') => keys::SPACE.len(),
+ KeyCode::Char('<') => keys::LESS_THAN.len(),
+ KeyCode::Char('>') => keys::GREATER_THAN.len(),
+ KeyCode::Char('+') => keys::PLUS.len(),
+ KeyCode::Char('-') => keys::MINUS.len(),
+ KeyCode::Char(';') => keys::SEMICOLON.len(),
+ KeyCode::Char('%') => keys::PERCENT.len(),
+ KeyCode::F(1..=9) => 2,
+ KeyCode::F(_) => 3,
+ KeyCode::Char(c) => c.width().unwrap_or(0),
+ };
+ if self.modifiers.contains(KeyModifiers::SHIFT) {
+ width += 2;
+ }
+ if self.modifiers.contains(KeyModifiers::ALT) {
+ width += 2;
+ }
+ if self.modifiers.contains(KeyModifiers::CONTROL) {
+ width += 2;
+ }
+ width
+ }
+
+ fn width_cjk(&self) -> usize {
+ self.width()
+ }
+}
+
impl std::str::FromStr for KeyEvent {
type Err = Error;
fn from_str(s: &str) -> Result<Self, Self::Err> {
let mut tokens: Vec<_> = s.split('-').collect();
let code = match tokens.pop().ok_or_else(|| anyhow!("Missing key code"))? {
- "backspace" => KeyCode::Backspace,
- "space" => KeyCode::Char(' '),
- "ret" => KeyCode::Enter,
- "lt" => KeyCode::Char('<'),
- "gt" => KeyCode::Char('>'),
- "plus" => KeyCode::Char('+'),
- "minus" => KeyCode::Char('-'),
- "semicolon" => KeyCode::Char(';'),
- "percent" => KeyCode::Char('%'),
- "left" => KeyCode::Left,
- "right" => KeyCode::Right,
- "up" => KeyCode::Down,
- "home" => KeyCode::Home,
- "end" => KeyCode::End,
- "pageup" => KeyCode::PageUp,
- "pagedown" => KeyCode::PageDown,
- "tab" => KeyCode::Tab,
- "backtab" => KeyCode::BackTab,
- "del" => KeyCode::Delete,
- "ins" => KeyCode::Insert,
- "null" => KeyCode::Null,
- "esc" => KeyCode::Esc,
+ keys::BACKSPACE => KeyCode::Backspace,
+ keys::ENTER => KeyCode::Enter,
+ keys::LEFT => KeyCode::Left,
+ keys::RIGHT => KeyCode::Right,
+ keys::UP => KeyCode::Up,
+ keys::DOWN => KeyCode::Down,
+ keys::HOME => KeyCode::Home,
+ keys::END => KeyCode::End,
+ keys::PAGEUP => KeyCode::PageUp,
+ keys::PAGEDOWN => KeyCode::PageDown,
+ keys::TAB => KeyCode::Tab,
+ keys::BACKTAB => KeyCode::BackTab,
+ keys::DELETE => KeyCode::Delete,
+ keys::INSERT => KeyCode::Insert,
+ keys::NULL => KeyCode::Null,
+ keys::ESC => KeyCode::Esc,
+ keys::SPACE => KeyCode::Char(' '),
+ keys::LESS_THAN => KeyCode::Char('<'),
+ keys::GREATER_THAN => KeyCode::Char('>'),
+ keys::PLUS => KeyCode::Char('+'),
+ keys::MINUS => KeyCode::Char('-'),
+ keys::SEMICOLON => KeyCode::Char(';'),
+ keys::PERCENT => KeyCode::Char('%'),
single if single.len() == 1 => KeyCode::Char(single.chars().next().unwrap()),
function if function.len() > 1 && function.starts_with('F') => {
let function: String = function.chars().skip(1).collect();
diff --git a/helix-view/src/lib.rs b/helix-view/src/lib.rs
index caed2952..9bcc0b7d 100644
--- a/helix-view/src/lib.rs
+++ b/helix-view/src/lib.rs
@@ -5,6 +5,7 @@ pub mod clipboard;
pub mod document;
pub mod editor;
pub mod graphics;
+pub mod info;
pub mod input;
pub mod keyboard;
pub mod register_selection;
generated by cgit v1.2.3-70-g09d2 (git 2.47.1) at 2024-12-27 06:07:11 +0000