From d75b7c00232834cea1b7a756c9e62db1b5d422a0 Mon Sep 17 00:00:00 2001
From: Lior Halphon <LIJI32@gmail.com>
Date: Sat, 28 Mar 2020 22:56:19 +0300
Subject: [PATCH] Feature request; allow loading prefs.bin relatively

---
 SDL/main.c            | 10 +++++++---
 Windows/stdio.h       |  6 +++++-
 Windows/utf8_compat.c | 12 +++++++++++-
 3 files changed, 23 insertions(+), 5 deletions(-)

diff --git a/SDL/main.c b/SDL/main.c
index 35c9a75..4b6afea 100644
--- a/SDL/main.c
+++ b/SDL/main.c
@@ -11,6 +11,7 @@
 
 #ifndef _WIN32
 #define AUDIO_FREQUENCY 96000
+#include <unistd.h>
 #else
 #include <Windows.h>
 /* Windows (well, at least my VM) can't handle 96KHz sound well :( */
@@ -686,9 +687,12 @@ int main(int argc, char **argv)
 
     SDL_EventState(SDL_DROPFILE, SDL_ENABLE);
     
-    char *prefs_dir = SDL_GetPrefPath("", "SameBoy");
-    snprintf(prefs_path, sizeof(prefs_path) - 1, "%sprefs.bin", prefs_dir);
-    SDL_free(prefs_dir);
+    strcpy(prefs_path, resource_path("prefs.bin"));
+    if (access(prefs_path, R_OK | W_OK) != 0) {
+        char *prefs_dir = SDL_GetPrefPath("", "SameBoy");
+        snprintf(prefs_path, sizeof(prefs_path) - 1, "%sprefs.bin", prefs_dir);
+        SDL_free(prefs_dir);
+    }
     
     FILE *prefs_file = fopen(prefs_path, "rb");
     if (prefs_file) {
diff --git a/Windows/stdio.h b/Windows/stdio.h
index d68c956..0595b01 100755
--- a/Windows/stdio.h
+++ b/Windows/stdio.h
@@ -2,6 +2,10 @@
 #include_next <stdio.h>
 #include <stdlib.h>
 
+int access(const char *filename, int mode);
+#define R_OK 2
+#define W_OK 4
+
 #ifndef __MINGW32__
 #ifndef __LIBRETRO__
 static inline int vasprintf(char **str, const char *fmt, va_list args)
@@ -72,4 +76,4 @@ static inline size_t getline(char **lineptr, size_t *n, FILE *stream) {
     return p - bufptr - 1;
 }
 
-#define snprintf _snprintf
\ No newline at end of file
+#define snprintf _snprintf
diff --git a/Windows/utf8_compat.c b/Windows/utf8_compat.c
index 1005f22..0347211 100755
--- a/Windows/utf8_compat.c
+++ b/Windows/utf8_compat.c
@@ -1,6 +1,7 @@
 #include <windows.h>
 #include <stdio.h>
 #include <winnls.h>
+#include <io.h>
 
 FILE *fopen(const char *filename, const char *mode)
 {
@@ -11,4 +12,13 @@ FILE *fopen(const char *filename, const char *mode)
     MultiByteToWideChar(CP_UTF8, 0, mode, -1, w_mode, sizeof(w_mode) / sizeof(w_mode[0]));
     
     return _wfopen(w_filename, w_mode);
-}
\ No newline at end of file
+}
+
+int access(const char *filename, int mode)
+{
+    wchar_t w_filename[MAX_PATH] = {0,};
+    MultiByteToWideChar(CP_UTF8, 0, filename, -1, w_filename, sizeof(w_filename) / sizeof(w_filename[0]));
+    
+    return _waccess(w_filename, mode);
+}
+