RetroArch/frontend/frontend_salamander.c

174 lines
5.0 KiB
C

/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2015 - Daniel De Matteis
*
* RetroArch 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 Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdint.h>
#include <boolean.h>
#include <stddef.h>
#include <string.h>
#include <file/config_file.h>
#include "../general.h"
#include "../file_ext.h"
#include <file/file_path.h>
#include <file/dir_list.h>
#include "frontend_driver.h"
struct defaults g_defaults;
/*We need to set libretro to the first entry in the cores
* directory so that it will be saved to the config file
*/
static void find_first_libretro_core(char *first_file,
size_t size_of_first_file, const char *dir,
const char * ext)
{
struct string_list *list;
size_t i;
bool ret = false;
RARCH_LOG("Searching for valid libretro implementation in: \"%s\".\n",
dir);
list = (struct string_list*)dir_list_new(dir, ext, false);
if (!list)
{
RARCH_ERR("Couldn't read directory. Cannot infer default libretro core.\n");
return;
}
for (i = 0; i < list->size && !ret; i++)
{
char fname[PATH_MAX_LENGTH];
const char *libretro_elem = (const char*)list->elems[i].data;
RARCH_LOG("Checking library: \"%s\".\n", libretro_elem);
if (!libretro_elem)
continue;
fill_pathname_base(fname, libretro_elem, sizeof(fname));
if (strncmp(fname, SALAMANDER_FILE, sizeof(fname)) == 0)
{
if ((i + 1) == list->size)
{
RARCH_WARN("Entry is RetroArch Salamander itself, but is last entry. No choice but to set it.\n");
strlcpy(first_file, fname, size_of_first_file);
}
continue;
}
strlcpy(first_file, fname, size_of_first_file);
RARCH_LOG("First found libretro core is: \"%s\".\n", first_file);
ret = true;
}
dir_list_free(list);
}
static void find_and_set_first_file(char *path, size_t sizeof_path,
const char *ext)
{
/* Last fallback - we'll need to start the first executable file
* we can find in the RetroArch cores directory.
*/
char first_file[PATH_MAX_LENGTH] = {0};
find_first_libretro_core(first_file, sizeof(first_file),
g_defaults.core_dir, ext);
if (first_file[0] != '\0')
{
fill_pathname_join(path, g_defaults.core_dir, first_file, sizeof_path);
RARCH_LOG("libretro_path now set to: %s.\n", path);
}
else
RARCH_ERR("Failed last fallback - RetroArch Salamander will exit.\n");
}
static void salamander_init(char *libretro_path, size_t sizeof_libretro_path)
{
/* normal executable loading path */
bool config_file_exists = false;
if (path_file_exists(g_defaults.config_path))
config_file_exists = true;
if (config_file_exists)
{
char tmp_str[PATH_MAX_LENGTH];
config_file_t * conf = (config_file_t*)config_file_new(g_defaults.config_path);
if (conf)
{
config_get_array(conf, "libretro_path", tmp_str, sizeof(tmp_str));
config_file_free(conf);
strlcpy(libretro_path, tmp_str, sizeof_libretro_path);
}
#ifdef GEKKO
else /* stupid libfat bug or something; sometimes it says the file is there when it doesn't */
config_file_exists = false;
#endif
}
if (!config_file_exists || !strcmp(libretro_path, ""))
find_and_set_first_file(libretro_path, sizeof_libretro_path, EXT_EXECUTABLES);
else
RARCH_LOG("Start [%s] found in retroarch.cfg.\n", libretro_path);
if (!config_file_exists)
{
config_file_t *conf = (config_file_t*)config_file_new(NULL);
if (conf)
{
config_set_string(conf, "libretro_path", libretro_path);
config_file_write(conf, g_defaults.config_path);
config_file_free(conf);
}
}
}
int main(int argc, char *argv[])
{
char libretro_path[PATH_MAX_LENGTH];
void *args = NULL;
struct rarch_main_wrap *wrap_args = NULL;
frontend_ctx_driver_t *frontend_ctx = NULL;
frontend_ctx = (frontend_ctx_driver_t*)frontend_ctx_init_first();
if (!frontend_ctx)
return 0;
if (frontend_ctx && frontend_ctx->init)
frontend_ctx->init(args);
if (frontend_ctx && frontend_ctx->environment_get)
frontend_ctx->environment_get(&argc, argv, args, wrap_args);
salamander_init(libretro_path, sizeof(libretro_path));
if (frontend_ctx && frontend_ctx->deinit)
frontend_ctx->deinit(args);
if (frontend_ctx && frontend_ctx->exitspawn)
frontend_ctx->exitspawn(libretro_path, sizeof(libretro_path));
return 1;
}