From 4efd6713c5b30b33c497a1f85b77a7b0a7fd17e0 Mon Sep 17 00:00:00 2001
From: Nathan Vegdahl
Date: Sun, 20 Jun 2021 15:09:10 -0700
Subject: Work on moving code over to LineEnding instead of assuming '\n'.

Also some general cleanup and some minor fixes along the way.
---
 helix-view/src/document.rs | 24 +++++++++++++-----------
 helix-view/src/editor.rs   |  4 ++--
 2 files changed, 15 insertions(+), 13 deletions(-)

(limited to 'helix-view')

diff --git a/helix-view/src/document.rs b/helix-view/src/document.rs
index 80be1ed2..3e38c24d 100644
--- a/helix-view/src/document.rs
+++ b/helix-view/src/document.rs
@@ -10,7 +10,7 @@ use std::sync::Arc;
 
 use helix_core::{
     auto_detect_line_ending,
-    chars::{char_is_linebreak, char_is_whitespace},
+    chars::{char_is_line_ending, char_is_whitespace},
     history::History,
     syntax::{LanguageConfiguration, LOADER},
     ChangeSet, Diagnostic, LineEnding, Rope, Selection, State, Syntax, Transaction,
@@ -81,6 +81,9 @@ pub struct Document {
     /// Current indent style.
     pub indent_style: IndentStyle,
 
+    /// The document's default line ending.
+    pub line_ending: LineEnding,
+
     syntax: Option<Syntax>,
     // /// Corresponding language scope name. Usually `source.<lang>`.
     pub(crate) language: Option<Arc<LanguageConfiguration>>,
@@ -99,7 +102,6 @@ pub struct Document {
 
     diagnostics: Vec<Diagnostic>,
     language_server: Option<Arc<helix_lsp::Client>>,
-    line_ending: LineEnding,
 }
 
 use std::fmt;
@@ -254,21 +256,21 @@ impl Document {
     pub fn load(path: PathBuf) -> Result<Self, Error> {
         use std::{fs::File, io::BufReader};
 
-        let doc = if !path.exists() {
+        let mut doc = if !path.exists() {
             Rope::from(DEFAULT_LINE_ENDING.as_str())
         } else {
             let file = File::open(&path).context(format!("unable to open {:?}", path))?;
-            let mut doc = Rope::from_reader(BufReader::new(file))?;
-            // add missing newline at the end of file
-            if doc.len_bytes() == 0 || doc.byte(doc.len_bytes() - 1) != b'\n' {
-                doc.insert_char(doc.len_chars(), '\n');
-            }
-            doc
+            Rope::from_reader(BufReader::new(file))?
         };
 
         // search for line endings
         let line_ending = auto_detect_line_ending(&doc).unwrap_or(DEFAULT_LINE_ENDING);
 
+        // add missing newline at the end of file
+        if doc.len_bytes() == 0 || char_is_line_ending(doc.char(doc.len_chars() - 1)) {
+            doc.insert(doc.len_chars(), line_ending.as_str());
+        }
+
         let mut doc = Self::new(doc);
         // set the path and try detecting the language
         doc.set_path(&path)?;
@@ -379,7 +381,7 @@ impl Document {
                     Some(' ') => false,
 
                     // Ignore blank lines.
-                    Some(c) if char_is_linebreak(c) => continue,
+                    Some(c) if char_is_line_ending(c) => continue,
 
                     _ => {
                         prev_line_is_tabs = false;
@@ -403,7 +405,7 @@ impl Document {
                         c if char_is_whitespace(c) => count_is_done = true,
 
                         // Ignore blank lines.
-                        c if char_is_linebreak(c) => continue 'outer,
+                        c if char_is_line_ending(c) => continue 'outer,
 
                         _ => break,
                     }
diff --git a/helix-view/src/editor.rs b/helix-view/src/editor.rs
index db8ae87a..fb2eb36d 100644
--- a/helix-view/src/editor.rs
+++ b/helix-view/src/editor.rs
@@ -12,7 +12,7 @@ use anyhow::Error;
 
 pub use helix_core::diagnostic::Severity;
 pub use helix_core::register::Registers;
-use helix_core::Position;
+use helix_core::{Position, DEFAULT_LINE_ENDING};
 
 #[derive(Debug)]
 pub struct Editor {
@@ -150,7 +150,7 @@ impl Editor {
 
     pub fn new_file(&mut self, action: Action) -> DocumentId {
         use helix_core::Rope;
-        let doc = Document::new(Rope::from("\n"));
+        let doc = Document::new(Rope::from(DEFAULT_LINE_ENDING.as_str()));
         let id = self.documents.insert(doc);
         self.documents[id].id = id;
         self.switch(id, action);
-- 
cgit v1.2.3-70-g09d2