From 295ec3790d191c41006d04b41db878dc1091b117 Mon Sep 17 00:00:00 2001
From: William Wilgus <wilgus.william@gmail.com>
Date: Wed, 23 Feb 2022 21:26:37 -0500
Subject: Core Keyremap Allow setting keymap from plugin

Allow setting and removing keyremap on the fly

It was pretty annoying trying to work out a keyremap with a restart
required to set the remap and was quite annoying when I was no
longer able to navigate to the plugin or filebrowser due to setting
the wrong remap

now you can try out a keymap and if it doesn't work a restart will
sort things out

Change-Id: I848fb3bd759f9684ac2497324a371f92b7464f7b
---
 apps/core_keymap.c | 49 ++++++++++++++++++++++++++++++++++++++++---------
 1 file changed, 40 insertions(+), 9 deletions(-)

(limited to 'apps/core_keymap.c')

diff --git a/apps/core_keymap.c b/apps/core_keymap.c
index 0a7241a9e0..131c48f45d 100644
--- a/apps/core_keymap.c
+++ b/apps/core_keymap.c
@@ -24,25 +24,56 @@
 #include "core_keymap.h"
 
 #if !defined(__PCTOOL__) || defined(CHECKWPS)
+static int keymap_handle = -1;
+
+static int core_alloc_keymap(size_t bufsz)
+{
+    keymap_handle = core_alloc_ex("key remap", bufsz, &buflib_ops_locked);
+    return keymap_handle;
+}
+
+static void core_free_keymap(void)
+{
+    action_set_keymap(NULL, -1);
+    if (keymap_handle > 0) /* free old buffer */
+    {
+        keymap_handle = core_free(keymap_handle);
+    }
+}
+
+/* Allocates buffer from core and copies keymap into it */
+int core_set_keyremap(struct button_mapping* core_keymap, int count)
+{
+
+    core_free_keymap();
+    if (count > 0)
+    {
+        size_t bufsize = count * sizeof(struct button_mapping);
+        if (core_keymap != NULL && core_alloc_keymap(bufsize) > 0)
+        {
+            char *buf = core_get_data(keymap_handle);
+            memcpy(buf, core_keymap, bufsize);
+            count = action_set_keymap((struct button_mapping *) buf, count);
+        }
+        else
+            count = -1;
+    }
+    return count;
+}
+
 int core_load_key_remap(const char *filename)
 {
-    static int keymap_handle = -1;
     char *buf;
     int fd = -1;
     int count = 0;
     size_t fsize = 0;
-    if (keymap_handle > 0) /* free old buffer */
-    {
-        action_set_keymap(NULL, -1);
-        keymap_handle = core_free(keymap_handle);
-    }
+    core_free_keymap();
+
     if (filename != NULL)
         count = open_key_remap(filename, &fd, &fsize);
     while (count > 0)
     {
-
-        keymap_handle = core_alloc_ex("key remap", fsize, &buflib_ops_locked);
-        if (keymap_handle <= 0)
+        if (core_alloc_keymap(fsize) <= 0)
         {
             count = -30;
             break;
-- 
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