From 25335e94a639cb020c5e077692ffdc855253acef Mon Sep 17 00:00:00 2001
From: KikooDX <kikoodx@paranoici.org>
Date: Thu, 25 Feb 2021 23:31:23 +0100
Subject: [PATCH] Allow user to configure keybindings.

---
 README.md    |  8 ++++++
 src/conf.zig | 21 ++++++++++++++++
 src/main.zig | 71 +++++++++++++++++++++++++++++-----------------------
 3 files changed, 69 insertions(+), 31 deletions(-)

diff --git a/README.md b/README.md
index d681c3c..d3f9c72 100644
--- a/README.md
+++ b/README.md
@@ -40,6 +40,14 @@ $ kble sample.kble
 $ kble $HOME/projects/kble/sample.kble
 ```
 
+# Configuration.
+In `src/conf.zig`, edit values from `BEGIN USER CONFIG`.
+The configuration is applied at compile time. You have the possibility to:
+* Disable mouse support.
+* Swap mouse buttons.
+* Change and add colors.
+* Edit keybindings.
+
 # Default keybindings
 Repetition/parameter:
 * `0` → `9`: behavior similar to Vi.
diff --git a/src/conf.zig b/src/conf.zig
index 96a1652..6fb12b3 100644
--- a/src/conf.zig
+++ b/src/conf.zig
@@ -41,4 +41,25 @@ pub fn cell_color(cell: cell_type) ray.Color {
         else => ray.PURPLE, // undefined
     };
 }
+
+/// Used to set keybindings.
+/// Only bind to default keybindings, use 0 to unbind a key.
+pub fn bind_key(key: u8) u8 {
+    return switch (key) {
+        // // jkl; movement.
+        // 'j' => 'h',
+        // 'k' => 'j',
+        // 'l' => 'k',
+        // ';' => 'l',
+        // // Backward movement with HJKL.
+        // 'H' => 'l',
+        // 'J' => 'k',
+        // 'K' => 'j',
+        // 'L' => 'h',
+        // // Use x instead of return for normal mode.
+        // '\n' => 0,
+        // 'x' => '\n',
+        else => key
+    };
+}
 // END USER CONFIG
diff --git a/src/main.zig b/src/main.zig
index 1a8d39b..7701285 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -76,39 +76,48 @@ pub fn main() void {
 
     // Create binding "table".
     var bindings = [_]*const actions.Action{&actions.ActionsDef.none} ** char_range;
-    // Set default bindings.
-    // Parameters/repetition.
-    {
-        var i: u8 = 0;
-        while (i < 10) : (i += 1) {
-            bindings['0' + i] = &ActionsDef.parameter;
+    comptime {
+        // Set default bindings.
+        var default_bindings = [_]*const actions.Action{&actions.ActionsDef.none} ** char_range;
+        comptime {
+            var i: u8 = 0;
+            while (i < 10) : (i += 1) {
+                default_bindings['0' + i] = &ActionsDef.parameter;
+            }
+        }
+        // Movement.
+        default_bindings['h'] = &ActionsDef.move_left;
+        default_bindings['j'] = &ActionsDef.move_down;
+        default_bindings['k'] = &ActionsDef.move_up;
+        default_bindings['l'] = &ActionsDef.move_right;
+        default_bindings['y'] = &ActionsDef.move_up_left;
+        default_bindings['u'] = &ActionsDef.move_up_right;
+        default_bindings['b'] = &ActionsDef.move_down_left;
+        default_bindings['n'] = &ActionsDef.move_down_right;
+        // Verbs.
+        default_bindings[' '] = &ActionsDef.verb_clear_selection;
+        default_bindings['d'] = &ActionsDef.verb_delete;
+        default_bindings['r'] = &ActionsDef.verb_replace;
+        // Scale.
+        default_bindings['='] = &ActionsDef.scale_reset;
+        default_bindings['+'] = &ActionsDef.scale_up;
+        default_bindings['-'] = &ActionsDef.scale_down;
+        // File.
+        default_bindings['e'] = &ActionsDef.file_read;
+        default_bindings['w'] = &ActionsDef.file_write;
+        // Mode.
+        default_bindings['\n'] = &ActionsDef.mode_normal;
+        default_bindings['i'] = &ActionsDef.mode_select;
+        default_bindings['v'] = &ActionsDef.mode_rectangle;
+        default_bindings['c'] = &ActionsDef.mode_camera;
+        // Map user bindings.
+        comptime {
+            var i: u8 = 0;
+            while (i < char_range) : (i += 1) {
+                bindings[i] = default_bindings[conf.bind_key(i)];
+            }
         }
     }
-    // Movement.
-    bindings['h'] = &ActionsDef.move_left;
-    bindings['j'] = &ActionsDef.move_down;
-    bindings['k'] = &ActionsDef.move_up;
-    bindings['l'] = &ActionsDef.move_right;
-    bindings['y'] = &ActionsDef.move_up_left;
-    bindings['u'] = &ActionsDef.move_up_right;
-    bindings['b'] = &ActionsDef.move_down_left;
-    bindings['n'] = &ActionsDef.move_down_right;
-    // Verbs.
-    bindings[' '] = &ActionsDef.verb_clear_selection;
-    bindings['d'] = &ActionsDef.verb_delete;
-    bindings['r'] = &ActionsDef.verb_replace;
-    // Scale.
-    bindings['='] = &ActionsDef.scale_reset;
-    bindings['+'] = &ActionsDef.scale_up;
-    bindings['-'] = &ActionsDef.scale_down;
-    // File.
-    bindings['e'] = &ActionsDef.file_read;
-    bindings['w'] = &ActionsDef.file_write;
-    // Mode.
-    bindings['\n'] = &ActionsDef.mode_normal;
-    bindings['i'] = &ActionsDef.mode_select;
-    bindings['v'] = &ActionsDef.mode_rectangle;
-    bindings['c'] = &ActionsDef.mode_camera;
 
     // Create input buffer.
     const input_buffer_len = 255;