// Copyright 2017 The Chromium OS Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef _BSDIFF_PATCH_WRITER_FACTORY_H_
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#define _BSDIFF_PATCH_WRITER_FACTORY_H_
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#include <memory>
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#include <string>
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#include <vector>
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#include "bsdiff/common.h"
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#include "bsdiff/constants.h"
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#include "bsdiff/patch_writer_interface.h"
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namespace bsdiff {
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// Create a patch writer compatible with upstream's "BSDIFF40" patch format
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// using bz2 as a compressor.
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BSDIFF_EXPORT
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std::unique_ptr<PatchWriterInterface> CreateBsdiffPatchWriter(
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const std::string& patch_filename);
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// Create a patch writer using the "BSDF2" patch format. It uses the compressor
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// specified in |type|. And the brotli compressor will have the compression
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// quality |brotli_quality|.
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BSDIFF_EXPORT
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std::unique_ptr<PatchWriterInterface> CreateBSDF2PatchWriter(
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const std::string& patch_filename,
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CompressorType type,
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int brotli_quality);
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// Create a patch writer using the "BSDF2" patch format. It also tries all the
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// compressors in |types| to generate the smallest patch.
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BSDIFF_EXPORT
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std::unique_ptr<PatchWriterInterface> CreateBSDF2PatchWriter(
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const std::string& patch_filename,
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const std::vector<CompressorType>& types,
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int brotli_quality);
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// Create a patch writer compatible with Android Play Store bsdiff patches.
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// The data will be written to the passed |patch| vector, which must be valid
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// until Close() is called or this patch is destroyed. The data will be
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// compressed using the compressor type |type|. To get an uncompressed patch,
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// pass CompressortType::kNoCompression.
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BSDIFF_EXPORT
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std::unique_ptr<PatchWriterInterface> CreateEndsleyPatchWriter(
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std::vector<uint8_t>* patch,
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CompressorType type,
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int brotli_quality);
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// Helper function to create an Endsley patch writer with no compression.
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BSDIFF_EXPORT
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std::unique_ptr<PatchWriterInterface> CreateEndsleyPatchWriter(
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std::vector<uint8_t>* patch);
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} // namespace bsdiff
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#endif // _BSDIFF_PATCH_WRITER_FACTORY_H_
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