Create save and sram dirs when needed

src/compat.c

@@ -1,4 +1,6 @@
-#include "compat.h"
+#include <stdio.h>
+
+#include "compat_impl.h"
 
 
 #if !defined (__unix__) && !(defined (__APPLE__) && defined (__MACH__))

src/compat.h

@@ -15,4 +15,12 @@ ssize_t getline(char **restrict lineptr, size_t *restrict n,
 
 #endif
 
+
+int mkdir_impl(const char*);
+
+static inline int mkdir(const char* dir) {
+    return mkdir_impl(dir);
+}
+
+
 #endif // NESE_COMPAT_H_

src/compat_impl.h

@@ -0,0 +1,24 @@
+#ifndef NESE_COMPAT_IMPL_H_
+#define NESE_COMPAT_IMPL_H_
+
+
+#ifdef _WIN32
+
+#include <direct.h>
+
+int mkdir_impl(const char* dir) {
+    return _mkdir(dir);
+}
+
+#else // !_WIN32
+
+#include <sys/stat.h>
+
+int mkdir_impl(const char* dir) {
+    return mkdir(dir, 0777);
+}
+
+#endif // _WIN32
+
+
+#endif // NESE_COMPAT_IMPL_H_

src/save.c

@@ -5,6 +5,7 @@
 #include "file.h"
 #include "mapper.h"
 #include "filemap.h"
+#include "compat.h"
 
 
 /* SRAM */
@@ -44,6 +45,7 @@ int save_sram(const nes_cart* cart, const char* cart_filename) {
                 cart->mapper->sram(cart->map_data) : NULL;
 
         if (sram_size > 0 && NULL != sram) {
+            mkdir("sram");
             char sram_filename[FILENAME_MAX] = {0};
             make_sram_filename(sram_filename, FILENAME_MAX - 1,
                                cart_filename);
@@ -91,6 +93,8 @@ int load_state(nes* sys, const char* cart_filename) {
 int save_state(const nes* sys, const char* cart_filename) {
     int size = -1;
 
+    mkdir("save");
+
     char state_filename[FILENAME_MAX] = {0};
     make_state_filename(state_filename, FILENAME_MAX - 1,
                         cart_filename);