mirror of
https://github.com/facebook/sapling.git
synced 2024-10-09 08:18:15 +03:00
ae684f3993
Summary: This is fairly mechanical diff that finalizes split of Hash into ObjectId and Hash20. More specifically this diff does two things: * Replaces `Hash` with `Hash20` * Removes alias `using Hash = Hash20` Reviewed By: chadaustin Differential Revision: D31324202 fbshipit-source-id: 780b6d2a422ddf6d0f3cfc91e3e70ad10ebaa8b4
67 lines
1.7 KiB
C++
67 lines
1.7 KiB
C++
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This software may be used and distributed according to the terms of the
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* GNU General Public License version 2.
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*/
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#include "SerializedBlobMetadata.h"
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#include <folly/Format.h>
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#include <folly/Range.h>
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#include <folly/lang/Bits.h>
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#include <eden/fs/model/Hash.h>
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#include <eden/fs/store/BlobMetadata.h>
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namespace facebook::eden {
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SerializedBlobMetadata::SerializedBlobMetadata(const BlobMetadata& metadata) {
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serialize(metadata.sha1, metadata.size);
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}
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SerializedBlobMetadata::SerializedBlobMetadata(
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const Hash20& contentsHash,
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uint64_t blobSize) {
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serialize(contentsHash, blobSize);
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}
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folly::ByteRange SerializedBlobMetadata::slice() const {
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return folly::ByteRange{data_};
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}
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BlobMetadata SerializedBlobMetadata::parse(
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ObjectId blobID,
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const StoreResult& result) {
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auto bytes = result.bytes();
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if (bytes.size() != SIZE) {
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throw std::invalid_argument(fmt::format(
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"Blob metadata for {} had unexpected size {}. Could not deserialize.",
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blobID.toString(),
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bytes.size()));
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}
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return unslice(bytes);
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}
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BlobMetadata SerializedBlobMetadata::unslice(folly::ByteRange bytes) {
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uint64_t blobSizeBE;
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memcpy(&blobSizeBE, bytes.data(), sizeof(uint64_t));
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bytes.advance(sizeof(uint64_t));
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auto contentsHash = Hash20{bytes};
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return BlobMetadata{contentsHash, folly::Endian::big(blobSizeBE)};
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}
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void SerializedBlobMetadata::serialize(
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const Hash20& contentsHash,
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uint64_t blobSize) {
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uint64_t blobSizeBE = folly::Endian::big(blobSize);
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memcpy(data_.data(), &blobSizeBE, sizeof(uint64_t));
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memcpy(
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data_.data() + sizeof(uint64_t),
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contentsHash.getBytes().data(),
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Hash20::RAW_SIZE);
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}
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} // namespace facebook::eden
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