FreeRDP/libfreerdp/locale/keyboard_keymap.c
2012-09-22 14:27:30 -04:00

209 lines
5.0 KiB
C

/**
* FreeRDP: A Remote Desktop Protocol Implementation
* Keyboard Localization - loading of keymap files
*
* Copyright 2009-2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "keyboard_keymap.h"
#include <freerdp/utils/file.h>
#include <freerdp/utils/memory.h>
#include <freerdp/locale/vkcodes.h>
#include <freerdp/locale/keyboard.h>
#include "liblocale.h"
#include <stdlib.h>
extern const RDP_SCANCODE VIRTUAL_KEY_CODE_TO_DEFAULT_RDP_SCANCODE_TABLE[256];
int freerdp_keyboard_load_map(uint32 keycode_to_vkcode[256], char* name)
{
FILE* fp;
char* pch;
char* beg;
char* end;
uint32 vkcode;
int kbd_found = 0;
char* keymap_path;
uint32 keycode = 0;
char buffer[1024] = "";
char keymap_name[256] = "";
char keymap_include[256] = "";
char keymap_filename[256] = "";
char keycode_string[32] = "";
char vkcode_name[128] = "";
beg = name;
/* Extract file name and keymap name */
if ((end = strrchr(name, '(')) != NULL)
{
strncpy(keymap_filename, &name[beg - name], end - beg);
beg = end + 1;
if ((end = strrchr(name, ')')) != NULL)
{
strncpy(keymap_name, &name[beg - name], end - beg);
keymap_name[end - beg] = '\0';
}
}
else
{
/* The keyboard name is the same as the file name */
strcpy(keymap_filename, name);
strcpy(keymap_name, name);
}
keymap_path = freerdp_construct_path(FREERDP_KEYMAP_PATH, keymap_filename);
DEBUG_KBD("Loading keymap %s, first trying %s", name, keymap_path);
if ((fp = fopen(keymap_path, "r")) == NULL)
{
DEBUG_KBD("%s not found", keymap_path);
xfree(keymap_path);
return 0;
}
xfree(keymap_path);
while (fgets(buffer, sizeof(buffer), fp) != NULL)
{
if (buffer[0] == '#')
{
continue; /* Skip comments */
}
if (kbd_found)
{
/* Closing curly bracket and semicolon */
if ((pch = strstr(buffer, "};")) != NULL)
{
break;
}
else if ((pch = strstr(buffer, "VK_")) != NULL)
{
/* The end is delimited by the first white space */
end = strcspn(pch, " \t\n\0") + pch;
/* We copy the virtual key code name in a string */
beg = pch;
strncpy(vkcode_name, beg, end - beg);
vkcode_name[end - beg] = '\0';
/* Now we want to extract the virtual key code itself which is in between '<' and '>' */
if ((beg = strchr(pch + 3, '<')) == NULL)
break;
else
beg++;
if ((end = strchr(beg, '>')) == NULL)
break;
/* We copy the string representing the number in a string */
strncpy(keycode_string, beg, end - beg);
keycode_string[end - beg] = '\0';
/* Convert the string representing the code to an integer */
keycode = atoi(keycode_string);
/* Make sure it is a valid keycode */
if (keycode < 0 || keycode > 255)
break;
/* Load this key mapping in the keyboard mapping */
vkcode = freerdp_keyboard_get_virtual_key_code_from_name(vkcode_name);
keycode_to_vkcode[keycode] = vkcode;
}
else if ((pch = strstr(buffer, ": extends")) != NULL)
{
/*
* This map extends another keymap We extract its name
* and we recursively load the keymap we need to include.
*/
if ((beg = strchr(pch + sizeof(": extends"), '"')) == NULL)
break;
beg++;
if ((end = strchr(beg, '"')) == NULL)
break;
strncpy(keymap_include, beg, end - beg);
keymap_include[end - beg] = '\0';
freerdp_keyboard_load_map(keycode_to_vkcode, keymap_include); /* Load included keymap */
}
}
else if ((pch = strstr(buffer, "keyboard")) != NULL)
{
/* Keyboard map identifier */
if ((beg = strchr(pch + sizeof("keyboard"), '"')) == NULL)
break;
beg++;
if ((end = strchr(beg, '"')) == NULL)
break;
pch = beg;
buffer[end - beg] = '\0';
/* Does it match our keymap name? */
if (strncmp(keymap_name, pch, strlen(keymap_name)) == 0)
kbd_found = 1;
}
}
fclose(fp); /* Don't forget to close file */
return 1;
}
void freerdp_keyboard_load_maps(uint32 keycode_to_vkcode[256], char* names)
{
char* kbd;
char* names_end;
int keymap_loaded = 0;
memset(keycode_to_vkcode, 0, sizeof(keycode_to_vkcode));
kbd = names;
names_end = names + strlen(names);
do
{
/* multiple maps are separated by '+' */
int kbd_length = strcspn(kbd + 1, "+") + 1;
kbd[kbd_length] = '\0';
/* Load keyboard map */
keymap_loaded += freerdp_keyboard_load_map(keycode_to_vkcode, kbd);
kbd += kbd_length + 1;
}
while (kbd < names_end);
DEBUG_KBD("loaded %d keymaps", keymap_loaded);
if (keymap_loaded <= 0)
printf("error: no keyboard mapping available!\n");
}