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