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- // Copyright (c) 2010 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.
- // Implementation of the byte-level differential compression used internally by
- // Courgette.
- #include "courgette/simple_delta.h"
- #include "base/logging.h"
- #include "courgette/third_party/bsdiff/bsdiff.h"
- namespace courgette {
- namespace {
- Status BSDiffStatusToStatus(bsdiff::BSDiffStatus status) {
- switch (status) {
- case bsdiff::OK: return C_OK;
- case bsdiff::CRC_ERROR: return C_BINARY_DIFF_CRC_ERROR;
- default: return C_GENERAL_ERROR;
- }
- }
- }
- Status ApplySimpleDelta(SourceStream* old, SourceStream* delta,
- SinkStream* target) {
- return BSDiffStatusToStatus(bsdiff::ApplyBinaryPatch(old, delta, target));
- }
- Status GenerateSimpleDelta(SourceStream* old, SourceStream* target,
- SinkStream* delta) {
- VLOG(1) << "GenerateSimpleDelta " << old->Remaining()
- << " " << target->Remaining();
- return BSDiffStatusToStatus(bsdiff::CreateBinaryPatch(old, target, delta));
- }
- } // namespace courgette
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