_wfopen -> xe::filesystem::OpenFile.

Progress on #305.

src/xenia/base/filesystem.cc

@@ -15,7 +15,7 @@ namespace xe {
 namespace filesystem {
 
 std::string CanonicalizePath(const std::string& original_path) {
-  char path_sep('\\');
+  char path_sep(xe::path_separator);
   std::string path(xe::fix_path_separators(original_path, path_sep));
 
   std::vector<std::string::size_type> path_breaks;

src/xenia/base/filesystem.h

@@ -19,12 +19,16 @@
 namespace xe {
 namespace filesystem {
 
+std::string CanonicalizePath(const std::string& original_path);
+
 bool PathExists(const std::wstring& path);
 
 bool CreateFolder(const std::wstring& path);
 bool DeleteFolder(const std::wstring& path);
 bool IsFolder(const std::wstring& path);
 
+FILE* OpenFile(const std::wstring& path, const char* mode);
+
 struct FileInfo {
   enum class Type {
     kFile,
@@ -39,8 +43,6 @@ struct FileInfo {
 };
 std::vector<FileInfo> ListFiles(const std::wstring& path);
 
-std::string CanonicalizePath(const std::string& original_path);
-
 class WildcardFlags {
  public:
   bool FromStart : 1, ToEnd : 1;

src/xenia/base/filesystem_win.cc

@@ -25,11 +25,11 @@ bool PathExists(const std::wstring& path) {
 
 bool CreateFolder(const std::wstring& path) {
   wchar_t folder[MAX_PATH] = {0};
-  auto end = std::wcschr(path.c_str(), L'\\');
+  auto end = std::wcschr(path.c_str(), xe::wpath_separator);
   while (end) {
     wcsncpy(folder, path.c_str(), end - path.c_str() + 1);
     CreateDirectory(folder, NULL);
-    end = wcschr(++end, L'\\');
+    end = wcschr(++end, xe::wpath_separator);
   }
   return PathExists(path);
 }
@@ -49,6 +49,11 @@ bool IsFolder(const std::wstring& path) {
          (attrib & FILE_ATTRIBUTE_DIRECTORY) == FILE_ATTRIBUTE_DIRECTORY;
 }
 
+FILE* OpenFile(const std::wstring& path, const char* mode) {
+  auto fixed_path = xe::fix_path_separators(path);
+  return _wfopen(fixed_path.c_str(), xe::to_wstring(mode).c_str());
+}
+
 #define COMBINE_TIME(t) (((uint64_t)t.dwHighDateTime << 32) | t.dwLowDateTime)
 
 std::vector<FileInfo> ListFiles(const std::wstring& path) {

src/xenia/base/platform.h

@@ -65,9 +65,11 @@ namespace xe {
 
 #if XE_PLATFORM_WIN32
 const char path_separator = '\\';
+const wchar_t wpath_separator = L'\\';
 const size_t max_path = _MAX_PATH;
 #else
 const char path_separator = '/';
+const wchar_t wpath_separator = L'/';
 const size_t max_path = 1024;  // PATH_MAX
 #endif  // XE_PLATFORM_WIN32