From 47d1e6211e1a59e14c61ed8ef61fba7c4548c238 Mon Sep 17 00:00:00 2001
From: Uko Kokņevičs
Date: Thu, 22 Feb 2024 00:10:00 +0200
Subject: Add C-<home> and C-<end>

---
 TODO.md           |  1 -
 src/Buffer.zig    | 10 ++++++++++
 src/KeyMap.zig    |  4 ++++
 src/KeyReader.zig |  1 +
 4 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/TODO.md b/TODO.md
index c684760..8ef84ae 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,4 +1,3 @@
-+ C-<home>, C-<end>
 + Copying
 + Undo
 + Nicer key-binding setup
diff --git a/src/Buffer.zig b/src/Buffer.zig
index 8cf7dc0..555ad1d 100644
--- a/src/Buffer.zig
+++ b/src/Buffer.zig
@@ -134,6 +134,11 @@ pub fn backwardWord(self: *Buffer) void {
     }
 }
 
+pub fn beginningOfBuffer(self: *Buffer) void {
+    self.cx = 0;
+    self.cy = 0;
+}
+
 pub fn cleanWhiteSpace(self: *Buffer) !void {
     for (self.rows.items) |*row| {
         try row.cleanWhiteSpace(self);
@@ -310,6 +315,11 @@ pub fn drawStatusBar(self: Buffer, writer: anytype, screencols: usize) !void {
     try writer.writeAll("\x1b[m\r\n");
 }
 
+pub fn endOfBuffer(self: *Buffer) void {
+    self.cx = 0;
+    self.cy = self.rows.items.len;
+}
+
 pub fn findBackwardWordStart(self: Buffer) usize {
     if (self.cy == self.rows.items.len) {
         return 0;
diff --git a/src/KeyMap.zig b/src/KeyMap.zig
index 15f5711..110bc0b 100644
--- a/src/KeyMap.zig
+++ b/src/KeyMap.zig
@@ -115,6 +115,8 @@ pub fn defaultMap(allocator: Allocator) !KeyMap {
     try map.bind(&.{Key.meta(Key.backspace)}, Buffer.backwardDeleteWord);
     try map.bind(&.{Key.meta(Key.delete)}, Buffer.deleteWord);
     try map.bind(&.{Key.meta(Key.down)}, Buffer.forwardParagraph);
+    try map.bind(&.{Key.meta(Key.end)}, Buffer.endOfBuffer);
+    try map.bind(&.{Key.meta(Key.home)}, Buffer.beginningOfBuffer);
     try map.bind(&.{Key.meta(Key.left)}, Buffer.backwardWord);
     try map.bind(&.{Key.meta(Key.right)}, Buffer.forwardWord);
     try map.bind(&.{Key.meta(Key.up)}, Buffer.backwardParagraph);
@@ -131,6 +133,8 @@ pub fn defaultMap(allocator: Allocator) !KeyMap {
     try map.bind(&.{Key.ctrl(Key.backspace)}, Buffer.backwardDeleteWord);
     try map.bind(&.{Key.ctrl(Key.delete)}, Buffer.deleteWord);
     try map.bind(&.{Key.ctrl(Key.down)}, Buffer.forwardParagraph);
+    try map.bind(&.{Key.ctrl(Key.end)}, Buffer.endOfBuffer);
+    try map.bind(&.{Key.ctrl(Key.home)}, Buffer.beginningOfBuffer);
     try map.bind(&.{Key.ctrl(Key.left)}, Buffer.backwardWord);
     try map.bind(&.{Key.ctrl(Key.right)}, Buffer.forwardWord);
     try map.bind(&.{Key.ctrl(Key.up)}, Buffer.backwardParagraph);
diff --git a/src/KeyReader.zig b/src/KeyReader.zig
index 5ddef82..64536d1 100644
--- a/src/KeyReader.zig
+++ b/src/KeyReader.zig
@@ -75,6 +75,7 @@ fn modKey(key: Key, num: usize) ?Key {
         6 => Key.shift(Key.ctrl(key)),
         7 => Key.meta(Key.ctrl(key)),
         8 => Key.shift(Key.meta(Key.ctrl(key))),
+        9 => Key.meta(key),
         else => null,
     };
 }
-- 
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