Most of XamContent* methods, besides enumeration.

Progress on #152.

src/poly/fs.h

@@ -0,0 +1,41 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2015 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef POLY_FS_H_
+#define POLY_FS_H_
+
+#include <string>
+
+#include "poly/config.h"
+#include "poly/string.h"
+
+namespace poly {
+namespace fs {
+
+bool PathExists(const std::wstring& path);
+
+bool CreateFolder(const std::wstring& path);
+
+bool DeleteFolder(const std::wstring& path);
+
+struct FileInfo {
+  enum class Type {
+    kFile,
+    kDirectory,
+  };
+  Type type;
+  std::wstring name;
+  size_t total_size;
+};
+std::vector<FileInfo> ListFiles(const std::wstring& path);
+
+}  // namespace fs
+}  // namespace poly
+
+#endif  // POLY_FS_H_