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