From 722cfedb382abf2a4e48ac45bdfd9b3c5de50a58 Mon Sep 17 00:00:00 2001
From: Cor Peters <luctius@users.noreply.github.com>
Date: Fri, 16 Jul 2021 18:12:59 +0200
Subject: [PATCH] Added change_case command (#441)
* Added change_case command
* Added switch_to_uppercase and switch_to_lowercase
Renamed change_case to switch_case.
* Updated the Keymap section of the Book
* Use flat_map instead of map + flatten
* Fix switch_to_uppercase using to_lowercase
* Switched 'Alt-`' to uppercase and '`' to lowercase
Co-authored-by: Cor <prive@corpeters.nl>
---
book/src/keymap.md | 43 ++++++++++++++++--------------
helix-term/src/commands.rs | 54 ++++++++++++++++++++++++++++++++++++++
helix-term/src/keymap.rs | 4 +++
3 files changed, 81 insertions(+), 20 deletions(-)
diff --git a/book/src/keymap.md b/book/src/keymap.md
index c0c455d3..5d6e5795 100644
--- a/book/src/keymap.md
+++ b/book/src/keymap.md
@@ -41,26 +41,29 @@
### Changes
-| Key | Description |
-| ----- | ----------- |
-| `r` | Replace with a character |
-| `R` | Replace with yanked text |
-| `i` | Insert before selection |
-| `a` | Insert after selection (append) |
-| `I` | Insert at the start of the line |
-| `A` | Insert at the end of the line |
-| `o` | Open new line below selection |
-| `o` | Open new line above selection |
-| `u` | Undo change |
-| `U` | Redo change |
-| `y` | Yank selection |
-| `p` | Paste after selection |
-| `P` | Paste before selection |
-| `>` | Indent selection |
-| `<` | Unindent selection |
-| `=` | Format selection |
-| `d` | Delete selection |
-| `c` | Change selection (delete and enter insert mode) |
+| Key | Description |
+| ----- | ----------- |
+| `r` | Replace with a character |
+| `R` | Replace with yanked text |
+| `~` | Switch case of the selected text |
+| `\`` | Set the selected text to upper case |
+| `Alt-\`` | Set the selected text to lower case |
+| `i` | Insert before selection |
+| `a` | Insert after selection (append) |
+| `I` | Insert at the start of the line |
+| `A` | Insert at the end of the line |
+| `o` | Open new line below selection |
+| `o` | Open new line above selection |
+| `u` | Undo change |
+| `U` | Redo change |
+| `y` | Yank selection |
+| `p` | Paste after selection |
+| `P` | Paste before selection |
+| `>` | Indent selection |
+| `<` | Unindent selection |
+| `=` | Format selection |
+| `d` | Delete selection |
+| `c` | Change selection (delete and enter insert mode) |
### Selection manipulation
diff --git a/helix-term/src/commands.rs b/helix-term/src/commands.rs
index 3b208ca8..7e769f4e 100644
--- a/helix-term/src/commands.rs
+++ b/helix-term/src/commands.rs
@@ -186,6 +186,9 @@ impl Command {
extend_till_prev_char,
extend_prev_char,
replace,
+ switch_case,
+ switch_to_uppercase,
+ switch_to_lowercase,
page_up,
page_down,
half_page_up,
@@ -780,6 +783,57 @@ fn replace(cx: &mut Context) {
})
}
+fn switch_case(cx: &mut Context) {
+ let (view, doc) = current!(cx.editor);
+ let transaction =
+ Transaction::change_by_selection(doc.text(), doc.selection(view.id), |range| {
+ let text: Tendril = range
+ .fragment(doc.text().slice(..))
+ .chars()
+ .flat_map(|ch| {
+ if ch.is_lowercase() {
+ ch.to_uppercase().collect()
+ } else if ch.is_uppercase() {
+ ch.to_lowercase().collect()
+ } else {
+ vec![ch]
+ }
+ })
+ .collect();
+
+ (range.from(), range.to() + 1, Some(text))
+ });
+
+ doc.apply(&transaction, view.id);
+ doc.append_changes_to_history(view.id);
+}
+
+fn switch_to_uppercase(cx: &mut Context) {
+ let (view, doc) = current!(cx.editor);
+ let transaction =
+ Transaction::change_by_selection(doc.text(), doc.selection(view.id), |range| {
+ let text: Tendril = range.fragment(doc.text().slice(..)).to_uppercase().into();
+
+ (range.from(), range.to() + 1, Some(text))
+ });
+
+ doc.apply(&transaction, view.id);
+ doc.append_changes_to_history(view.id);
+}
+
+fn switch_to_lowercase(cx: &mut Context) {
+ let (view, doc) = current!(cx.editor);
+ let transaction =
+ Transaction::change_by_selection(doc.text(), doc.selection(view.id), |range| {
+ let text: Tendril = range.fragment(doc.text().slice(..)).to_lowercase().into();
+
+ (range.from(), range.to() + 1, Some(text))
+ });
+
+ doc.apply(&transaction, view.id);
+ doc.append_changes_to_history(view.id);
+}
+
fn scroll(cx: &mut Context, offset: usize, direction: Direction) {
use Direction::*;
let (view, doc) = current!(cx.editor);
diff --git a/helix-term/src/keymap.rs b/helix-term/src/keymap.rs
index fe32e49f..32994c37 100644
--- a/helix-term/src/keymap.rs
+++ b/helix-term/src/keymap.rs
@@ -82,6 +82,10 @@ impl Default for Keymaps {
key!('r') => Command::replace,
key!('R') => Command::replace_with_yanked,
+ key!('~') => Command::switch_case,
+ alt!('`') => Command::switch_to_uppercase,
+ key!('`') => Command::switch_to_lowercase,
+
key!(Home) => Command::goto_line_start,
key!(End) => Command::goto_line_end,