add filesystem driver

Signed-off-by: Arnav Bhatt <arnav@ghativega.in>

Makefile

@@ -41,7 +41,7 @@ loadso_OBJS = src/loadso/dummy/SDL_sysloadso.o
 
 power_OBJS = src/power/SDL_power.o
 
-filesystem_OBJS = src/filesystem/dummy/SDL_sysfilesystem.o
+filesystem_OBJS = src/filesystem/kolibri/SDL_sysfilesystem.o
 
 locale_OBJS = src/locale/SDL_locale.o src/locale/dummy/SDL_syslocale.o
 

include/SDL_config_kolibri.h

@@ -116,7 +116,7 @@
 /* Enable the stub shared object loader (src/loadso/dummy/\*.c) */
 #define SDL_LOADSO_DISABLED 1
 
-/* Enable the dummy filesystem driver (src/filesystem/dummy/\*.c) */
+/* Enable the Kolibri filesystem driver (src/filesystem/kolibri/\*.c) */
-#define SDL_FILESYSTEM_DUMMY 1
+#define SDL_FILESYSTEM_KOLIBRI 1
 
 #endif /* SDL_config_kolibri_h_ */

src/filesystem/kolibri/SDL_sysfilesystem.c

@@ -0,0 +1,55 @@
+
+#include "../../SDL_internal.h"
+
+#ifdef SDL_FILESYSTEM_KOLIBRI
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+/* System dependent filesystem routines                                */
+
+#include <sys/ksys.h>
+
+#include "SDL_error.h"
+#include "SDL_filesystem.h"
+
+char *SDL_GetBasePath(void)
+{
+    char *retval = NULL;
+    size_t len;
+    char cwd[FILENAME_MAX];
+
+    _ksys_getcwd(cwd, sizeof(cwd));
+    len = SDL_strlen(cwd) + 2;
+    retval = (char *)SDL_malloc(len);
+    SDL_snprintf(retval, len, "%s/", cwd);
+
+    return retval;
+}
+
+char *SDL_GetPrefPath(const char *org, const char *app)
+{
+    char *retval = NULL;
+    size_t len;
+    char *base = SDL_GetBasePath();
+    if (!app) {
+        SDL_InvalidParamError("app");
+        return NULL;
+    }
+    if (!org) {
+        org = "";
+    }
+
+    len = SDL_strlen(base) + SDL_strlen(org) + SDL_strlen(app) + 4;
+    retval = (char *)SDL_malloc(len);
+
+    if (*org) {
+        SDL_snprintf(retval, len, "%s%s/%s/", base, org, app);
+    } else {
+        SDL_snprintf(retval, len, "%s%s/", base, app);
+    }
+    free(base);
+
+    _ksys_mkdir(retval);
+    return retval;
+}
+
+#endif