From a4f5a0134e308ffad318ab6920fe1ed0264a93cb Mon Sep 17 00:00:00 2001
From: Jan Hrastnik
Date: Mon, 14 Jun 2021 15:09:54 +0200
Subject: trying out line ending helper functions in commands.rs

---
 helix-term/src/commands.rs  | 44 ++++++++++++++++++++++++++++++++++----------
 helix-term/src/ui/editor.rs |  4 ++--
 2 files changed, 36 insertions(+), 12 deletions(-)

(limited to 'helix-term')

diff --git a/helix-term/src/commands.rs b/helix-term/src/commands.rs
index c80716d4..144e1f3c 100644
--- a/helix-term/src/commands.rs
+++ b/helix-term/src/commands.rs
@@ -4,9 +4,14 @@ use helix_core::{
     movement::{self, Direction},
     object, pos_at_coords,
     regex::{self, Regex},
+<<<<<<< HEAD
     register::{self, Register, Registers},
     search, selection, Change, ChangeSet, Position, Range, Rope, RopeSlice, Selection, SmallVec,
     Tendril, Transaction,
+=======
+    register, search, selection, Change, ChangeSet, LineEnding, Position, Range, Rope, RopeSlice,
+    Selection, SmallVec, Tendril, Transaction,
+>>>>>>> 856fd95 (trying out line ending helper functions in commands.rs)
 };
 
 use helix_view::{
@@ -184,8 +189,14 @@ pub fn move_line_end(cx: &mut Context) {
         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);
+        // subtract 3 if the line ending is \r\n, otherwise subtract 2 as I assume all others are just 1 char length
+        let pos =
+            text.line_to_char(line + 1)
+                .saturating_sub(if doc.line_ending == LineEnding::Crlf {
+                    3
+                } else {
+                    2
+                });
         Range::new(pos, pos)
     });
 
@@ -337,7 +348,7 @@ where
             KeyEvent {
                 code: KeyCode::Enter,
                 ..
-            } => '\n',
+            } => '\n', // TODO: we should be calling doc.line_ending() here
             KeyEvent {
                 code: KeyCode::Char(ch),
                 ..
@@ -465,7 +476,7 @@ pub fn replace(cx: &mut Context) {
             KeyEvent {
                 code: KeyCode::Enter,
                 ..
-            } => Some('\n'),
+            } => Some('\n'), // TODO: we should be calling doc.line_ending() here
             _ => None,
         };
 
@@ -606,8 +617,14 @@ pub fn extend_line_end(cx: &mut Context) {
         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);
+        // subtract 3 if the line ending is \r\n, otherwise subtract 2 as I assume all others are just 1 char length
+        let pos =
+            text.line_to_char(line + 1)
+                .saturating_sub(if doc.line_ending == LineEnding::Crlf {
+                    3
+                } else {
+                    2
+                });
         Range::new(range.anchor, pos)
     });
 
@@ -896,7 +913,7 @@ pub 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(Tendril::from_char('\n')))]), // TODO: change \n to doc.line_ending()
         );
         doc.apply(&transaction, view.id);
     }
@@ -1523,7 +1540,7 @@ fn open(cx: &mut Context, open: Open) {
             );
             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());
             text.push_str(&indent);
             let text = text.repeat(count);
 
@@ -2131,7 +2148,7 @@ 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());
             text.push_str(&indent);
 
             let head = pos + offs + text.chars().count();
@@ -2152,7 +2169,7 @@ 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());
                 text.push_str(&indent);
             }
 
@@ -2268,8 +2285,15 @@ fn paste_impl(
             .unwrap(),
     );
 
+<<<<<<< HEAD
     // 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 \n it's linewise paste
+        let linewise = values
+            .iter()
+            .any(|value| value.ends_with(doc.line_ending()));
+>>>>>>> 856fd95 (trying out line ending helper functions in commands.rs)
 
     let mut values = values.iter().cloned().map(Tendril::from).chain(repeat);
 
diff --git a/helix-term/src/ui/editor.rs b/helix-term/src/ui/editor.rs
index 0a646e93..d6010e6c 100644
--- a/helix-term/src/ui/editor.rs
+++ b/helix-term/src/ui/editor.rs
@@ -7,7 +7,7 @@ use crate::{
 };
 
 use helix_core::{
-    coords_at_pos,
+    coords_at_pos, rope_slice_to_line_ending,
     syntax::{self, HighlightEvent},
     Position, Range,
 };
@@ -179,7 +179,7 @@ impl EditorView {
 
                     // iterate over range char by char
                     for grapheme in RopeGraphemes::new(text) {
-                        if grapheme == "\n" || grapheme == "\r\n" {
+                        if rope_slice_to_line_ending(&grapheme).is_some() {
                             visual_x = 0;
                             line += 1;
 
-- 
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