Keep only base/extractor.[cc|h].

base/file_reader.h

-// Copyright 2003-2009 Google Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-// ========================================================================
-
-#ifndef OMAHA_COMMON_FILE_READER_H_
-#define OMAHA_COMMON_FILE_READER_H_
-
-#include <windows.h>
-#include <tchar.h>
-#include "base/basictypes.h"
-#include "base/scoped_ptr.h"
-#include "omaha/base/file.h"
-
-namespace omaha {
-
-// Allows one to read files quickly and easily line by line.
-class FileReader {
- public:
-  FileReader();
-  ~FileReader();
-
-  // Specifies the underlying file name and the size of internal read buffer.
-  HRESULT Init(const TCHAR* file_name, size_t buffer_size);
-
-  // Reads one line of text from the file, taking advantage of the internal
-  // file buffer to optimize I/O reads. It reads at most max_len - 1 characters
-  // and it always terminates the line.
-  HRESULT ReadLineAnsi(size_t max_len, char* line);
-  HRESULT ReadLineString(CString* line);
-
- private:
-  HRESULT GetNextChar(bool peek, CString* next_char);
-  size_t file_buffer_size() const { return file_buffer_size_; }
-
-  File file_;
-  bool file_is_open_;
-  size_t buffered_byte_count_;          // How many bytes are in the buffer.
-  size_t current_position_;             // An index into the buffer.
-  scoped_array<byte> file_buffer_;      // A buffer (cache) of the file.
-  size_t file_buffer_size_;             // How much of the file to slurp
-                                        // in on each read.
-  bool is_unicode_;
-
-  DISALLOW_EVIL_CONSTRUCTORS(FileReader);
-};
-
-}  // namespace omaha
-
-#endif  // OMAHA_COMMON_FILE_READER_H_