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/******************************************************************************
Curse of War -- Real Time Strategy Game for Linux.
Copyright (C) 2013 Alexey Nikolaev.
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 3 of the License, or
(at your option) any later version.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
******************************************************************************/
#include <stdlib.h>
#include <string.h>
#ifndef WIN32
# include <sys/stat.h>
#endif
/* allocates memory */
char *concat(char *a, char *b) {
char *res = (char*) malloc (sizeof(char) * (strlen(a) + strlen(b) + 1));
strcpy(res, a);
strcat(res, b);
return res;
}
/* allocates memory */
char *get_xdg_data_home() {
char *s;
if ((s = getenv("XDG_DATA_HOME")) != NULL) {
return strdup(s);
}
else if ((s = getenv("HOME")) != NULL) {
char *suffix = "/.local/share";
return concat (s, suffix);
}
else {
char *a = concat ("/home/", getenv("USER"));
char *b = concat (a, "/.local/share");
free(a);
return b;
}
}
/* Create an array of possible paths to the game data
Allocates memory!
1) "."
2) $XDG_DATA_HOME/curseofwar/
Defaults to ~/.local/share/curwseofwar/
3) ~/.curseofwar/
4) /usr/local/share/curseofwar/
5) /usr/share/curseofwar/
6) /usr/share/curseofwar-sdl/
7) /usr/share/curseofwar-common/
*/
char **get_search_paths() {
char *suffix = "/curseofwar/";
#ifndef WIN32
int dirs_num = 8;
char **path = (char**) malloc(sizeof(char*) * (dirs_num + 1));
path[0] = strdup("");
char *s;
s = get_xdg_data_home();
path[1] = concat(s, suffix);
free(s);
path[2] = concat(getenv("HOME"), "/.curseofwar/");
path[3] = strdup("/usr/local/share/curseofwar/");
path[4] = strdup("/usr/share/curseofwar/");
path[5] = strdup("/usr/share/curseofwar-sdl/");
path[6] = strdup("/usr/share/curseofwar-common/");
path[7] = strdup(INSTALL_DATA);
#else
int dirs_num = 1;
char **path = (char**) malloc(sizeof(char*) * (dirs_num + 1));
path[0] = strdup("");
#endif
path[dirs_num] = NULL;
return path;
}
void destroy_search_paths(char** path) {
int i=0;
while (path[i] != NULL) {
free(path[i]);
++i;
}
free(path);
}
/* allocates memory */
char *find_file(char** path, char* suffix) {
char *res;
#ifndef WIN32
struct stat sb;
int i = 0;
while (path[i] != NULL) {
res = concat(path[i], suffix);
if ( stat(res, &sb) == 0 && S_ISREG(sb.st_mode) )
return res;
else
free(res);
++i;
}
#else
/* in Windows, simply return the first path + suffix */
return concat(path[0], suffix);
#endif
return NULL;
}
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