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https://github.com/nestriness/cdc-file-transfer.git
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4326e972ac
The tools allow efficient and fast synchronization of large directory trees from a Windows workstation to a Linux target machine. cdc_rsync* support efficient copy of files by using content-defined chunking (CDC) to identify chunks within files that can be reused. asset_stream_manager + cdc_fuse_fs support efficient streaming of a local directory to a remote virtual file system based on FUSE. It also employs CDC to identify and reuse unchanged data chunks.
55 lines
1.5 KiB
C++
55 lines
1.5 KiB
C++
// Copyright 2022 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "common/status.h"
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#include "absl/strings/numbers.h"
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namespace cdc_ft {
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namespace {
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constexpr char kTagKey[] = "tag";
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absl::Cord TagToCord(Tag tag) {
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return absl::Cord(std::to_string(static_cast<int>(tag)));
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}
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absl::optional<Tag> CordToTag(absl::optional<absl::Cord> cord) {
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if (!cord.has_value()) return {};
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int value;
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absl::numbers_internal::safe_strto32_base(std::string(cord.value()), &value,
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10);
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return value >= 0 && value < static_cast<int>(Tag::kCount)
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? static_cast<Tag>(value)
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: absl::optional<Tag>();
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}
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} // namespace
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absl::Status SetTag(absl::Status status, Tag tag) {
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status.SetPayload(kTagKey, TagToCord(tag));
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return status;
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}
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bool HasTag(const absl::Status& status, Tag tag) {
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return status.GetPayload(kTagKey) == TagToCord(tag);
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}
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absl::optional<Tag> GetTag(const absl::Status& status) {
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return CordToTag(status.GetPayload(kTagKey));
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}
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} // namespace cdc_ft
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