Renaming xe::fs to xe::filesystem and xe::kernel::fs to xe::vfs.

Progress on #294.

src/xenia/base/filesystem_win.cc

@@ -0,0 +1,77 @@
+/**
+ ******************************************************************************
+ * 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. *
+ ******************************************************************************
+ */
+
+#include "xenia/base/filesystem.h"
+
+#include <shellapi.h>
+
+#include <string>
+
+#include "xenia/base/platform.h"
+
+namespace xe {
+namespace filesystem {
+
+bool PathExists(const std::wstring& path) {
+  DWORD attrib = GetFileAttributes(path.c_str());
+  return attrib != INVALID_FILE_ATTRIBUTES;
+}
+
+bool CreateFolder(const std::wstring& path) {
+  wchar_t folder[MAX_PATH] = {0};
+  auto end = std::wcschr(path.c_str(), L'\\');
+  while (end) {
+    wcsncpy(folder, path.c_str(), end - path.c_str() + 1);
+    CreateDirectory(folder, NULL);
+    end = wcschr(++end, L'\\');
+  }
+  return PathExists(path);
+}
+
+bool DeleteFolder(const std::wstring& path) {
+  auto double_null_path = path + L"\0";
+  SHFILEOPSTRUCT op = {0};
+  op.wFunc = FO_DELETE;
+  op.pFrom = double_null_path.c_str();
+  op.fFlags = FOF_NO_UI;
+  return SHFileOperation(&op) == 0;
+}
+
+std::vector<FileInfo> ListFiles(const std::wstring& path) {
+  std::vector<FileInfo> result;
+
+  WIN32_FIND_DATA ffd;
+  HANDLE handle = FindFirstFile((path + L"\\*").c_str(), &ffd);
+  if (handle == INVALID_HANDLE_VALUE) {
+    return result;
+  }
+  do {
+    if (std::wcscmp(ffd.cFileName, L".") == 0 ||
+        std::wcscmp(ffd.cFileName, L"..") == 0) {
+      continue;
+    }
+    FileInfo info;
+    if (ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
+      info.type = FileInfo::Type::kDirectory;
+      info.total_size = 0;
+    } else {
+      info.type = FileInfo::Type::kFile;
+      info.total_size =
+          (ffd.nFileSizeHigh * (size_t(MAXDWORD) + 1)) + ffd.nFileSizeLow;
+    }
+    info.name = ffd.cFileName;
+    result.push_back(info);
+  } while (FindNextFile(handle, &ffd) != 0);
+  FindClose(handle);
+
+  return result;
+}
+
+}  // namespace filesystem
+}  // namespace xe