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

Progress on #294.

src/xenia/base/filesystem.h

@@ -0,0 +1,78 @@
+/**
+ ******************************************************************************
+ * 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 XENIA_BASE_FILESYSTEM_H_
+#define XENIA_BASE_FILESYSTEM_H_
+
+#include <iterator>
+#include <string>
+#include <vector>
+
+#include "xenia/base/string.h"
+
+namespace xe {
+namespace filesystem {
+
+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);
+
+std::string CanonicalizePath(const std::string& original_path);
+
+class WildcardFlags {
+ public:
+  bool FromStart : 1, ToEnd : 1;
+
+  WildcardFlags();
+  WildcardFlags(bool start, bool end);
+
+  static WildcardFlags FIRST;
+  static WildcardFlags LAST;
+};
+
+class WildcardRule {
+ public:
+  WildcardRule(const std::string& str_match, const WildcardFlags& flags);
+  bool Check(const std::string& str_lower,
+             std::string::size_type& offset) const;
+
+ private:
+  std::string match;
+  WildcardFlags rules;
+};
+
+class WildcardEngine {
+ public:
+  void SetRule(const std::string& pattern);
+
+  // Always ignoring case
+  bool Match(const std::string& str) const;
+
+ private:
+  std::vector<WildcardRule> rules;
+  void PreparePattern(const std::string& pattern);
+};
+
+}  // namespace filesystem
+}  // namespace xe
+
+#endif  // XENIA_BASE_FILESYSTEM_H_