Move Media Galleries FileAPI code out of webkit.

webkit/fileapi/media/picasa/pmp_column_reader.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_FILEAPI_MEDIA_PICASA_PMP_COLUMN_READER_H_
-#define WEBKIT_FILEAPI_MEDIA_PICASA_PMP_COLUMN_READER_H_
-
-#include <string>
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/memory/scoped_ptr.h"
-#include "webkit/fileapi/media/picasa/pmp_constants.h"
-#include "webkit/storage/webkit_storage_export.h"
-
-namespace base {
-class FilePath;
-}
-
-namespace picasaimport {
-
-// Reads a single PMP column from a file.
-class WEBKIT_STORAGE_EXPORT_PRIVATE PmpColumnReader {
- public:
-  PmpColumnReader();
-  virtual ~PmpColumnReader();
-
-  // Returns true if read successfully.
-  // |rows_read| is undefined if returns false.
-  bool Init(const base::FilePath& filepath, uint32* rows_read);
-
-  // These functions read the value of that |row| into |result|.
-  // Functions return false if the column is of the wrong type or the row
-  // is out of range.
-  bool ReadString(const uint32 row, std::string* result) const;
-  bool ReadUInt32(const uint32 row, uint32* result) const;
-  bool ReadDouble64(const uint32 row, double* result) const;
-  bool ReadUInt8(const uint32 row, uint8* result) const;
-  bool ReadUInt64(const uint32 row, uint64* result) const;
-
-  // Returns the native encoding of field_type.
-  PmpFieldType field_type() const {
-    return field_type_;
-  }
-
- private:
-  bool ParseData(uint32* rows_read);
-  // Returns the number of bytes parsed in the body, or, -1 on failure.
-  long IndexStrings();
-
-  // Source data
-  scoped_ptr<uint8[]> data_;
-  size_t length_;
-
-  // Header data
-  PmpFieldType field_type_;
-  uint32 rows_;
-
-  // Index of string start locations if fields are strings. Empty otherwise.
-  std::vector<const char*> strings_;
-
-  DISALLOW_COPY_AND_ASSIGN(PmpColumnReader);
-};
-
-}  // namespace picasaimport
-
-#endif  // WEBKIT_FILEAPI_MEDIA_PICASA_PMP_COLUMN_READER_H_