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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.
62 lines
1.6 KiB
C++
62 lines
1.6 KiB
C++
/*
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* 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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*/
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#ifndef ABSL_HELPER_JEDEC_SIZE_FLAG_H_
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#define ABSL_HELPER_JEDEC_SIZE_FLAG_H_
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#include <string>
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#include "absl/flags/flag.h"
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#include "absl/flags/marshalling.h"
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#include "absl/strings/string_view.h"
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namespace cdc_ft {
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// Supported JEDEC unit suffixes.
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enum class JedecUnit : char {
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Unkown = 0,
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Byte = 'B', // optional
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Kilo = 'K',
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Mega = 'M',
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Giga = 'G',
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Tera = 'T',
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Peta = 'P',
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};
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// This class parses flag arguments that represent human readable data sizes,
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// such as 1024, 2K, 3M, 4G, or 5T.
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//
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// See https://en.wikipedia.org/wiki/JEDEC_memory_standards.
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class JedecSize {
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public:
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explicit JedecSize(uint64_t size = 0) : size_(size) {}
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uint64_t Size() const { return size_; }
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void SetSize(uint64_t size) { size_ = size; }
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private:
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uint64_t size_;
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};
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// Abseil flags parser for JedecSize.
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bool AbslParseFlag(absl::string_view text, JedecSize* flag, std::string* err);
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// Abseil flags unparser for JedecSize.
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std::string AbslUnparseFlag(const JedecSize& size);
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}; // namespace cdc_ft
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#endif // ABSL_HELPER_JEDEC_SIZE_FLAG_H_
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