1 files changed, 74 insertions, 0 deletions

diff --git a/quantum/keycode_config.c b/quantum/keycode_config.c
new file mode 100644
index 000000000..6d90781a1
--- /dev/null
+++ b/quantum/keycode_config.c
@@ -0,0 +1,74 @@
+#include "keycode_config.h"
+
+extern keymap_config_t keymap_config;
+
+uint16_t keycode_config(uint16_t keycode) {
+
+    switch (keycode) {
+        case KC_CAPSLOCK:
+        case KC_LOCKING_CAPS:
+            if (keymap_config.swap_control_capslock || keymap_config.capslock_to_control) {
+                return KC_LCTL;
+            }
+            return keycode;
+        case KC_LCTL:
+            if (keymap_config.swap_control_capslock) {
+                return KC_CAPSLOCK;
+            }
+            return KC_LCTL;
+        case KC_LALT:
+            if (keymap_config.swap_lalt_lgui) {
+                if (keymap_config.no_gui) {
+                    return KC_NO;
+                }
+                return KC_LGUI;
+            }
+            return KC_LALT;
+        case KC_LGUI:
+            if (keymap_config.swap_lalt_lgui) {
+                return KC_LALT;
+            }
+            if (keymap_config.no_gui) {
+                return KC_NO;
+            }
+            return KC_LGUI;
+        case KC_RALT:
+            if (keymap_config.swap_ralt_rgui) {
+                if (keymap_config.no_gui) {
+                    return KC_NO;
+                }
+                return KC_RGUI;
+            }
+            return KC_RALT;
+        case KC_RGUI:
+            if (keymap_config.swap_ralt_rgui) {
+                return KC_RALT;
+            }
+            if (keymap_config.no_gui) {
+                return KC_NO;
+            }
+            return KC_RGUI;
+        case KC_GRAVE:
+            if (keymap_config.swap_grave_esc) {
+                return KC_ESC;
+            }
+            return KC_GRAVE;
+        case KC_ESC:
+            if (keymap_config.swap_grave_esc) {
+                return KC_GRAVE;
+            }
+            return KC_ESC;
+        case KC_BSLASH:
+            if (keymap_config.swap_backslash_backspace) {
+                return KC_BSPACE;
+            }
+            return KC_BSLASH;
+        case KC_BSPACE:
+            if (keymap_config.swap_backslash_backspace) {
+                return KC_BSLASH;
+            }
+            return KC_BSPACE;
+        default:
+            return keycode;
+    }
+}
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