1 // Copyright 2017 The Chromium OS Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef SRC_INCLUDE_PUFFIN_PUFFDIFF_H_ 6 #define SRC_INCLUDE_PUFFIN_PUFFDIFF_H_ 7 8 #include <string> 9 #include <vector> 10 11 #include "puffin/common.h" 12 #include "puffin/stream.h" 13 14 namespace puffin { 15 16 // Performs a diff operation between input deflate streams and creates a patch 17 // that is used in the client to recreate the |dst| from |src|. 18 // |src| IN Source deflate stream. 19 // |dst| IN Destination deflate stream. 20 // |src_deflates| IN Deflate locations in |src|. 21 // |dst_deflates| IN Deflate locations in |dst|. 22 // |tmp_filepath| IN A path to a temporary file. The caller has the 23 // responsibility of unlinking the file after the call to 24 // |PuffDiff| finishes. 25 // |puffin_patch| OUT The patch that later can be used in |PuffPatch|. 26 bool PuffDiff(UniqueStreamPtr src, 27 UniqueStreamPtr dst, 28 const std::vector<BitExtent>& src_deflates, 29 const std::vector<BitExtent>& dst_deflates, 30 const std::string& tmp_filepath, 31 Buffer* patch); 32 33 // Similar to the function above, except that it accepts raw buffer rather than 34 // stream. 35 PUFFIN_EXPORT 36 bool PuffDiff(const Buffer& src, 37 const Buffer& dst, 38 const std::vector<BitExtent>& src_deflates, 39 const std::vector<BitExtent>& dst_deflates, 40 const std::string& tmp_filepath, 41 Buffer* patch); 42 43 } // namespace puffin 44 45 #endif // SRC_INCLUDE_PUFFIN_PUFFDIFF_H_ 46
