1 files changed, 106 insertions, 0 deletions

diff --git a/apps/core_keymap.c b/apps/core_keymap.c
new file mode 100644
index 0000000000..0a7241a9e0
--- /dev/null
+++ b/apps/core_keymap.c
@@ -0,0 +1,106 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2020 by William Wilgus
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "action.h"
+#include "core_alloc.h"
+#include "core_keymap.h"
+
+#if !defined(__PCTOOL__) || defined(CHECKWPS)
+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);
+    }
+    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)
+        {
+            count = -30;
+            break;
+        }
+        buf = core_get_data(keymap_handle);
+        if (read(fd, buf, fsize) == (ssize_t) fsize)
+        {
+            count = action_set_keymap((struct button_mapping *) buf, count);
+        }
+        else
+            count = -40;
+        break;
+    }
+    close(fd);
+    return count;
+}
+
+int open_key_remap(const char *filename, int *fd, size_t *fsize)
+{
+    int count = 0;
+
+    while (filename && fd && fsize)
+    {
+        *fsize = 0;
+        *fd = open(filename, O_RDONLY);
+        if (*fd)
+        {
+            *fsize = filesize(*fd);
+
+            count = *fsize / sizeof(struct button_mapping);
+
+            if (count * sizeof(struct button_mapping) != *fsize)
+            {
+                count = -10;
+                break;
+            }
+
+            if (count > 1)
+            {
+                struct button_mapping header = {0};
+                read(*fd, &header, sizeof(struct button_mapping));
+                if (KEYREMAP_VERSION == header.action_code &&
+                    KEYREMAP_HEADERID == header.button_code &&
+                    header.pre_button_code == count)
+                {
+                    count--;
+                    *fsize -= sizeof(struct button_mapping);
+                }
+                else /* Header mismatch */
+                {
+                    count = -20;
+                    break;
+                }
+            }
+        }
+        break;
+    }
+    return count;
+}
+
+#endif /* !defined(__PCTOOL__) */