add ps_fopen to properly handle fopen on Windows

fixes #22

CMakeLists.txt

@@ -79,6 +79,7 @@ endif()
 
 set(ENGINE_SOURCES
 src/log.cpp
+src/fileutils.cpp
 
 extern/Nuked-OPN2/ym3438.c
 extern/opm/opm.c

src/engine/engine.cpp

@@ -3,6 +3,7 @@
 #include "instrument.h"
 #include "safeReader.h"
 #include "../ta-log.h"
+#include "../fileutils.h"
 #include "../audio/sdl.h"
 #include <cstddef>
 #include <stdexcept>
@@ -2260,7 +2261,7 @@ void DivEngine::notifyWaveChange(int wave) {
 
 bool DivEngine::saveConf() {
   configFile=configPath+String(CONFIG_FILE);
-  FILE* f=fopen(configFile.c_str(),"wb");
+  FILE* f=ps_fopen(configFile.c_str(),"wb");
   if (f==NULL) {
     logW("could not write config file! %s\n",strerror(errno));
     return false;
@@ -2280,7 +2281,7 @@ bool DivEngine::saveConf() {
 bool DivEngine::loadConf() {
   char line[4096];
   configFile=configPath+String(CONFIG_FILE);
-  FILE* f=fopen(configFile.c_str(),"rb");
+  FILE* f=ps_fopen(configFile.c_str(),"rb");
   if (f==NULL) {
     logI("creating default config.\n");
     return saveConf();

src/engine/instrument.cpp

@@ -1,6 +1,7 @@
 #include "engine.h"
 #include "instrument.h"
 #include "../ta-log.h"
+#include "../fileutils.h"
 
 void DivInstrument::putInsData(SafeWriter* w) {
   w->write("INST",4);
@@ -159,7 +160,7 @@ bool DivInstrument::save(const char* path) {
 
   putInsData(w);
 
-  FILE* outFile=fopen(path,"wb");
+  FILE* outFile=ps_fopen(path,"wb");
   if (outFile==NULL) {
     logE("could not save instrument: %s!\n",strerror(errno));
     w->finish();
@@ -171,4 +172,4 @@ bool DivInstrument::save(const char* path) {
   fclose(outFile);
   w->finish();
   return true;
-}
+}

src/engine/wavetable.cpp

@@ -1,6 +1,7 @@
 #include "engine.h"
 #include "wavetable.h"
 #include "../ta-log.h"
+#include "../fileutils.h"
 
 void DivWavetable::putWaveData(SafeWriter* w) {
   w->write("WAVE",4);
@@ -30,7 +31,7 @@ bool DivWavetable::save(const char* path) {
 
   putWaveData(w);
 
-  FILE* outFile=fopen(path,"wb");
+  FILE* outFile=ps_fopen(path,"wb");
   if (outFile==NULL) {
     logE("could not save wavetable: %s!\n",strerror(errno));
     w->finish();

src/fileutils.cpp

@@ -0,0 +1,12 @@
+#include "fileutils.h"
+#ifdef _WIN32
+#include "utfutils.h"
+#endif
+
+FILE* ps_fopen(const char* path, const char* mode) {
+#ifdef _WIN32
+  return _wfopen(utf8To16(path).c_str(),utf8To16(mode).c_str());
+#else
+  return fopen(path,mode);
+#endif
+}

src/fileutils.h

@@ -0,0 +1,7 @@
+#ifndef _FILEUTILS_H
+#define _FILEUTILS_H
+#include <stdio.h>
+
+FILE* ps_fopen(const char* path, const char* mode);
+
+#endif

src/gui/gui.cpp

@@ -8,6 +8,7 @@
 #include "fonts.h"
 #include "icon.h"
 #include "../ta-log.h"
+#include "../fileutils.h"
 #include "imgui.h"
 #include "imgui_impl_sdl.h"
 #include "imgui_impl_sdlrenderer.h"
@@ -251,7 +252,7 @@ DockSpace         ID=0x8B93E3BD Window=0xA787BDB4 Pos=0,24 Size=1280,800 Split=Y
 
 void FurnaceGUI::prepareLayout() {
   FILE* check;
-  check=fopen(finalLayoutPath,"r");
+  check=ps_fopen(finalLayoutPath,"r");
   if (check!=NULL) {
     fclose(check);
     return;
@@ -259,7 +260,7 @@ void FurnaceGUI::prepareLayout() {
 
   // copy initial layout
   logI("loading default layout.\n");
-  check=fopen(finalLayoutPath,"w");
+  check=ps_fopen(finalLayoutPath,"w");
   if (check==NULL) {
     logW("could not write default layout!\n");
     return;
@@ -3133,7 +3134,7 @@ int FurnaceGUI::save(String path) {
     lastError=e->getLastError();
     return 3;
   }
-  FILE* outFile=fopen(path.c_str(),"wb");
+  FILE* outFile=ps_fopen(path.c_str(),"wb");
   if (outFile==NULL) {
     lastError=strerror(errno);
     w->finish();
@@ -3217,7 +3218,7 @@ int FurnaceGUI::save(String path) {
 int FurnaceGUI::load(String path) {
   if (!path.empty()) {
     logI("loading module...\n");
-    FILE* f=fopen(path.c_str(),"rb");
+    FILE* f=ps_fopen(path.c_str(),"rb");
     if (f==NULL) {
       perror("error");
       lastError=strerror(errno);

src/main.cpp

@@ -3,6 +3,7 @@
 #include <stdint.h>
 #include <string>
 #include "ta-log.h"
+#include "fileutils.h"
 #include "engine/engine.h"
 
 #ifdef _WIN32
@@ -249,7 +250,7 @@ int main(int argc, char** argv) {
   logI("Furnace version " DIV_VERSION ".\n");
   if (!fileName.empty()) {
     logI("loading module...\n");
-    FILE* f=fopen(fileName.c_str(),"rb");
+    FILE* f=ps_fopen(fileName.c_str(),"rb");
     if (f==NULL) {
       perror("error");
       return 1;