mirror of
https://github.com/nestriness/cdc-file-transfer.git
synced 2026-01-30 14:35:37 +02:00
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.
60 lines
2.2 KiB
C++
60 lines
2.2 KiB
C++
// Copyright 2022 Google LLC
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#include "manifest/manifest_printer.h"
|
|
|
|
#include "manifest/content_id.h"
|
|
#include "manifest/manifest_proto_defs.h"
|
|
|
|
namespace cdc_ft {
|
|
|
|
// A special text proto printer that prints all ContentId protos using a
|
|
// hexadecimal representation instead of octal-escaped string values.
|
|
class ContentIdPrinter : public google::protobuf::TextFormat::MessagePrinter {
|
|
public:
|
|
ContentIdPrinter() = default;
|
|
virtual ~ContentIdPrinter() = default;
|
|
void Print(const google::protobuf::Message& message, bool single_line_mode,
|
|
google::protobuf::TextFormat::BaseTextGenerator* generator)
|
|
const override {
|
|
const ContentIdProto* content_id =
|
|
dynamic_cast<const ContentIdProto*>(&message);
|
|
if (content_id) {
|
|
generator->PrintLiteral("blake3_sum_160: \"");
|
|
generator->PrintString(ContentId::ToHexString(*content_id));
|
|
generator->PrintLiteral("\"");
|
|
} else {
|
|
// Technically, we should just call the inherited Print() function, but
|
|
// this results in a linker error for unknown reasons. But since we are
|
|
// never supposed to be called for any other message type, let's not
|
|
// bother.
|
|
generator->PrintLiteral("(given message is no ContentId proto)");
|
|
}
|
|
if (!single_line_mode) generator->PrintLiteral("\n");
|
|
}
|
|
};
|
|
|
|
ManifestPrinter::ManifestPrinter() {
|
|
ContentIdPrinter* printer = new ContentIdPrinter;
|
|
// If registration of a printer is successful, the callee takes ownership of
|
|
// the object.
|
|
if (!RegisterMessagePrinter(ContentIdProto::default_instance().descriptor(),
|
|
printer)) {
|
|
// Registration unsuccessful, delete the object.
|
|
delete printer;
|
|
}
|
|
}
|
|
|
|
} // namespace cdc_ft
|