AU: Gut code for old updater. New protobuf for v2 updater.

src/platform/update_engine/delta_diff_generator.h

 // Copyright (c) 2009 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 CHROMEOS_PLATFORM_UPDATE_ENGINE_DELTA_DIFF_GENERATOR_H__
 #define CHROMEOS_PLATFORM_UPDATE_ENGINE_DELTA_DIFF_GENERATOR_H__
 
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <set>
-#include <string>
-#include <vector>
 #include "base/basictypes.h"
-#include "update_engine/file_writer.h"
-#include "update_engine/update_metadata.pb.h"
 
 namespace chromeos_update_engine {
 
 class DeltaDiffGenerator {
- public:
-  // Encodes the metadata at new_path recursively into a DeltaArchiveManifest
-  // protobuf object. This will only read the filesystem. Children will
-  // be recorded recursively iff they are on the same device as their
-  // parent.
-  // This will set all fields in the DeltaArchiveManifest except for
-  // DeltaArchiveManifest_File_data_* as those are set only when writing
-  // the actual delta file to disk.
-  // Caller is responsible for freeing the returned value.
-  // Returns NULL on failure.
-  static DeltaArchiveManifest* EncodeMetadataToProtoBuffer(
-      const char* new_path);
-
-  // Takes a DeltaArchiveManifest as given from EncodeMetadataToProtoBuffer(),
-  // fill in the missing fields (DeltaArchiveManifest_File_data_*), and
-  // write the full delta out to the output file.
-  // Any paths in nondiff_paths will be included in full, rather than
-  // as a diff. This is useful for files that change during postinstall, since
-  // future updates can't depend on them having remaining unchanged.
-  // Returns true on success.
-  // If non-empty, the device at force_compress_dev_path will be compressed.
-  static bool EncodeDataToDeltaFile(
-      DeltaArchiveManifest* archive,
-      const std::string& old_path,
-      const std::string& new_path,
-      const std::string& out_file,
-      const std::set<std::string>& nondiff_paths,
-      const std::string& force_compress_dev_path);
-                                    
  private:
-  // These functions encode all the data about a file that's not already
-  // stored in the DeltaArchiveManifest message into the vector 'out'.
-  // They all return true on success.
-
-  // EncodeLink stores the path the symlink points to.
-  static bool EncodeLink(const std::string& path, std::vector<char>* out);
-  // EncodeDev stores the major and minor device numbers.
-  // Specifically it writes a LinuxDevice message.
-  static bool EncodeDev(
-      const struct stat& stbuf, std::vector<char>* out,
-      DeltaArchiveManifest_File_DataFormat* format,
-      bool force_compression);
-  // EncodeFile stores the full data, gzipped data, or a binary diff from
-  // the old data. out_data_format will be set to the method used.
-  static bool EncodeFile(const std::string& old_dir,
-                         const std::string& new_dir,
-                         const std::string& file_name,
-                         const bool avoid_diff,
-                         DeltaArchiveManifest_File_DataFormat* out_data_format,
-                         std::vector<char>* out,
-                         bool* no_change);
-
-  // nondiff_paths is passed in to EncodeDataToDeltaFile() with
-  // paths relative to the installed system (e.g. /etc/fstab), but
-  // WriteFileDiffsToDeltaFile requires always_full_target_paths to be
-  // the entire path of the new file.
-  // If non-empty, the device at force_compress_dev_path will be compressed.
-  static bool WriteFileDiffsToDeltaFile(
-      DeltaArchiveManifest* archive,
-      DeltaArchiveManifest_File* file,
-      const std::string& file_name,
-      const std::string& old_path,
-      const std::string& new_path,
-      FileWriter* out_file_writer,
-      int* out_file_length,
-      std::set<std::string> always_full_target_paths,
-      const std::string& force_compress_dev_path);
-
   // This should never be constructed
   DISALLOW_IMPLICIT_CONSTRUCTORS(DeltaDiffGenerator);
 };
 
 };  // namespace chromeos_update_engine
 
 #endif  // CHROMEOS_PLATFORM_UPDATE_ENGINE_DELTA_DIFF_GENERATOR_H__