input: add kitty keymap data

src/input.zig

@@ -5,6 +5,7 @@ pub usingnamespace @import("input/mouse.zig");
 pub usingnamespace @import("input/key.zig");
 pub const function_keys = @import("input/function_keys.zig");
 pub const keycodes = @import("input/keycodes.zig");
+pub const kitty = @import("input/kitty.zig");
 pub const Binding = @import("input/Binding.zig");
 pub const KeyEncoder = @import("input/KeyEncoder.zig");
 pub const SplitDirection = Binding.Action.SplitDirection;

src/input/kitty.zig

@@ -0,0 +1,117 @@
+const std = @import("std");
+const key = @import("key.zig");
+
+/// A single entry in the kitty keymap data. There are only ~100 entries
+/// so the recommendation is to just use a linear search to find the entry
+/// for a given key.
+pub const Entry = struct {
+    key: key.Key,
+    code: u16,
+    final: u8,
+    modifier: bool,
+};
+
+/// The full list of entries for the current platform.
+pub const entries: []const Entry = entries: {
+    var result: [raw_entries.len]Entry = undefined;
+    for (raw_entries, 0..) |raw, i| {
+        result[i] = .{
+            .key = raw[0],
+            .code = raw[1],
+            .final = raw[2],
+            .modifier = raw[3],
+        };
+    }
+    break :entries &result;
+};
+
+/// Raw entry is the tuple form of an entry for easy human management.
+/// This should never be used in a real program so it is not pub. For
+/// real programs, use `entries` which has properly typed, structured data.
+const RawEntry = struct { key.Key, u16, u8, bool };
+
+/// The raw data for how to map keys to Kitty data. Based on the information:
+/// https://sw.kovidgoyal.net/kitty/keyboard-protocol/#functional-key-definitions
+/// And the exact table is ported from Foot:
+/// https://codeberg.org/dnkl/foot/src/branch/master/kitty-keymap.h
+///
+/// Note that we currently don't support all the same keysyms as Kitty,
+/// but we can add them as we add support.
+const raw_entries: []const RawEntry = &.{
+    .{ .backspace, 127, 'u', false },
+    .{ .tab, 9, 'u', false },
+    .{ .enter, 13, 'u', false },
+    .{ .pause, 57362, 'u', false },
+    .{ .scroll_lock, 57359, 'u', false },
+    .{ .escape, 27, 'u', false },
+    .{ .home, 1, 'H', false },
+    .{ .left, 1, 'D', false },
+    .{ .up, 1, 'A', false },
+    .{ .right, 1, 'C', false },
+    .{ .down, 1, 'B', false },
+    .{ .end, 1, 'F', false },
+    .{ .print_screen, 57361, 'u', false },
+    .{ .insert, 2, '~', false },
+    .{ .num_lock, 57360, 'u', true },
+
+    .{ .kp_enter, 57414, 'u', false },
+    .{ .kp_multiply, 57411, 'u', false },
+    .{ .kp_add, 57413, 'u', false },
+    .{ .kp_subtract, 57412, 'u', false },
+    .{ .kp_decimal, 57409, 'u', false },
+    .{ .kp_divide, 57410, 'u', false },
+    .{ .kp_0, 57399, 'u', false },
+    .{ .kp_1, 57400, 'u', false },
+    .{ .kp_2, 57401, 'u', false },
+    .{ .kp_3, 57402, 'u', false },
+    .{ .kp_4, 57403, 'u', false },
+    .{ .kp_5, 57404, 'u', false },
+    .{ .kp_6, 57405, 'u', false },
+    .{ .kp_7, 57406, 'u', false },
+    .{ .kp_8, 57407, 'u', false },
+    .{ .kp_9, 57408, 'u', false },
+    .{ .kp_equal, 57415, 'u', false },
+
+    .{ .f1, 1, 'P', false },
+    .{ .f2, 1, 'Q', false },
+    .{ .f3, 13, '~', false },
+    .{ .f4, 1, 'S', false },
+    .{ .f5, 15, '~', false },
+    .{ .f6, 17, '~', false },
+    .{ .f7, 18, '~', false },
+    .{ .f8, 19, '~', false },
+    .{ .f9, 20, '~', false },
+    .{ .f10, 21, '~', false },
+    .{ .f11, 23, '~', false },
+    .{ .f12, 24, '~', false },
+    .{ .f13, 57376, 'u', false },
+    .{ .f14, 57377, 'u', false },
+    .{ .f15, 57378, 'u', false },
+    .{ .f16, 57379, 'u', false },
+    .{ .f17, 57380, 'u', false },
+    .{ .f18, 57381, 'u', false },
+    .{ .f19, 57382, 'u', false },
+    .{ .f20, 57383, 'u', false },
+    .{ .f21, 57384, 'u', false },
+    .{ .f22, 57385, 'u', false },
+    .{ .f23, 57386, 'u', false },
+    .{ .f24, 57387, 'u', false },
+    .{ .f25, 57388, 'u', false },
+
+    .{ .left_shift, 57441, 'u', true },
+    .{ .right_shift, 57447, 'u', true },
+    .{ .left_control, 57442, 'u', true },
+    .{ .right_control, 57448, 'u', true },
+    .{ .caps_lock, 57358, 'u', true },
+    .{ .left_super, 57444, 'u', true },
+    .{ .right_super, 57450, 'u', true },
+    .{ .left_alt, 57443, 'u', true },
+    .{ .right_alt, 57449, 'u', true },
+
+    .{ .delete, 3, '~', false },
+};
+
+test {
+    // To force comptime to test it
+    _ = entries;
+}