Common/FileSystem: Add EnsureDirectoryExists()

common/FileSystem.cpp

@@ -565,6 +565,15 @@ bool FileSystem::WriteFileToString(const char* filename, const std::string_view&
 	return true;
 }
 
+bool FileSystem::EnsureDirectoryExists(const char* path, bool recursive)
+{
+	if (FileSystem::DirectoryExists(path))
+		return true;
+
+	// if it fails to create, we're not going to be able to use it anyway
+	return FileSystem::CreateDirectoryPath(path, recursive);
+}
+
 #ifdef _WIN32
 
 static u32 TranslateWin32Attributes(u32 Win32Attributes)

common/FileSystem.h

@@ -150,6 +150,10 @@ namespace FileSystem
 	/// if they do not exist.
 	bool CreateDirectoryPath(const char* path, bool recursive);
 
+	/// Creates a directory if it doesn't already exist.
+	/// Returns false if it does not exist and creation failed.
+	bool EnsureDirectoryExists(const char* path, bool recursive);
+
 	/// Returns the path to the current executable.
 	std::string GetProgramPath();