Move storage-related files from webkit/ to new top-level directory storage/

webkit/common/data_element.h

-// Copyright 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef WEBKIT_COMMON_DATA_ELEMENT_H_
-#define WEBKIT_COMMON_DATA_ELEMENT_H_
-
-#include <string>
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/files/file_path.h"
-#include "base/logging.h"
-#include "base/time/time.h"
-#include "url/gurl.h"
-#include "webkit/common/webkit_common_export.h"
-
-namespace webkit_common {
-
-// Represents a base Web data element. This could be either one of
-// bytes, file or blob data.
-class WEBKIT_COMMON_EXPORT DataElement {
- public:
-  enum Type {
-    TYPE_UNKNOWN = -1,
-    TYPE_BYTES,
-    TYPE_FILE,
-    TYPE_BLOB,
-    TYPE_FILE_FILESYSTEM,
-  };
-
-  DataElement();
-  ~DataElement();
-
-  Type type() const { return type_; }
-  const char* bytes() const { return bytes_ ? bytes_ : &buf_[0]; }
-  const base::FilePath& path() const { return path_; }
-  const GURL& filesystem_url() const { return filesystem_url_; }
-  const std::string& blob_uuid() const { return blob_uuid_; }
-  uint64 offset() const { return offset_; }
-  uint64 length() const { return length_; }
-  const base::Time& expected_modification_time() const {
-    return expected_modification_time_;
-  }
-
-  // Sets TYPE_BYTES data. This copies the given data into the element.
-  void SetToBytes(const char* bytes, int bytes_len) {
-    type_ = TYPE_BYTES;
-    buf_.assign(bytes, bytes + bytes_len);
-    length_ = buf_.size();
-  }
-
-  // Sets TYPE_BYTES data. This does NOT copy the given data and the caller
-  // should make sure the data is alive when this element is accessed.
-  void SetToSharedBytes(const char* bytes, int bytes_len) {
-    type_ = TYPE_BYTES;
-    bytes_ = bytes;
-    length_ = bytes_len;
-  }
-
-  // Sets TYPE_FILE data.
-  void SetToFilePath(const base::FilePath& path) {
-    SetToFilePathRange(path, 0, kuint64max, base::Time());
-  }
-
-  // Sets TYPE_BLOB data.
-  void SetToBlob(const std::string& uuid) {
-    SetToBlobRange(uuid, 0, kuint64max);
-  }
-
-  // Sets TYPE_FILE data with range.
-  void SetToFilePathRange(const base::FilePath& path,
-                          uint64 offset, uint64 length,
-                          const base::Time& expected_modification_time);
-
-  // Sets TYPE_BLOB data with range.
-  void SetToBlobRange(const std::string& blob_uuid,
-                      uint64 offset, uint64 length);
-
-  // Sets TYPE_FILE_FILESYSTEM with range.
-  void SetToFileSystemUrlRange(const GURL& filesystem_url,
-                               uint64 offset, uint64 length,
-                               const base::Time& expected_modification_time);
-
- private:
-  Type type_;
-  std::vector<char> buf_;  // For TYPE_BYTES.
-  const char* bytes_;  // For TYPE_BYTES.
-  base::FilePath path_;  // For TYPE_FILE.
-  GURL filesystem_url_;  // For TYPE_FILE_FILESYSTEM.
-  std::string blob_uuid_;
-  uint64 offset_;
-  uint64 length_;
-  base::Time expected_modification_time_;
-};
-
-#if defined(UNIT_TEST)
-inline bool operator==(const DataElement& a, const DataElement& b) {
-  if (a.type() != b.type() ||
-      a.offset() != b.offset() ||
-      a.length() != b.length())
-    return false;
-  switch (a.type()) {
-    case DataElement::TYPE_BYTES:
-      return memcmp(a.bytes(), b.bytes(), b.length()) == 0;
-    case DataElement::TYPE_FILE:
-      return a.path() == b.path() &&
-             a.expected_modification_time() == b.expected_modification_time();
-    case DataElement::TYPE_BLOB:
-      return a.blob_uuid() == b.blob_uuid();
-    case DataElement::TYPE_FILE_FILESYSTEM:
-      return a.filesystem_url() == b.filesystem_url();
-    case DataElement::TYPE_UNKNOWN:
-      NOTREACHED();
-      return false;
-  }
-  return false;
-}
-
-inline bool operator!=(const DataElement& a, const DataElement& b) {
-  return !(a == b);
-}
-#endif  // defined(UNIT_TEST)
-
-}  // namespace webkit_common
-
-#endif  // WEBKIT_COMMON_DATA_ELEMENT_H_