sandboxed-api/contrib/zopfli/example/main.cc
Christian Blichmann 4c87556901 Use Abseil's log/flags instead of glog/gflags
Follow-up changes might be required to fully fix up the contrib sandboxes.

PiperOrigin-RevId: 482475998
Change-Id: Iff631eb838a024b2f047a1be61bb27e35a8ff2f4
2022-10-20 06:48:51 -07:00

105 lines
3.2 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
//
// https://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 <fcntl.h>
#include <unistd.h>
#include <fstream>
#include <iostream>
#include <string>
#include "absl/flags/flag.h"
#include "absl/flags/parse.h"
#include "absl/log/globals.h"
#include "absl/log/initialize.h"
#include "contrib/zopfli/sandboxed.h"
#include "contrib/zopfli/utils/utils_zopfli.h"
ABSL_FLAG(bool, stream, false, "stream memory to sandbox");
ABSL_FLAG(bool, zlib, false, "zlib compression");
ABSL_FLAG(bool, gzip, false, "gzip compression");
absl::Status CompressMain(ZopfliApi& api, std::string& infile_s,
std::string& outfile_s, ZopfliFormat format) {
std::ifstream infile(infile_s, std::ios::binary);
if (!infile.is_open()) {
return absl::UnavailableError(absl::StrCat("Unable to open ", infile_s));
}
std::ofstream outfile(outfile_s, std::ios::binary);
if (!outfile.is_open()) {
return absl::UnavailableError(absl::StrCat("Unable to open ", outfile_s));
}
return Compress(api, infile, outfile, format);
}
absl::Status CompressMainFD(ZopfliApi& api, std::string& infile_s,
std::string& outfile_s, ZopfliFormat format) {
sapi::v::Fd infd(open(infile_s.c_str(), O_RDONLY));
if (infd.GetValue() < 0) {
return absl::UnavailableError(absl::StrCat("Unable to open ", infile_s));
}
sapi::v::Fd outfd(open(outfile_s.c_str(), O_WRONLY | O_CREAT));
if (outfd.GetValue() < 0) {
return absl::UnavailableError(absl::StrCat("Unable to open ", outfile_s));
}
return (CompressFD(api, infd, outfd, format));
}
int main(int argc, char* argv[]) {
std::string prog_name(argv[0]);
absl::SetStderrThreshold(absl::LogSeverityAtLeast::kInfo);
std::vector<char*> args = absl::ParseCommandLine(argc, argv);
absl::InitializeLog();
if (args.size() != 3) {
std::cerr << "Usage:\n " << prog_name << " INPUT OUTPUT\n";
return EXIT_FAILURE;
}
ZopfliSapiSandbox sandbox;
if (!sandbox.Init().ok()) {
std::cerr << "Unable to start sandbox\n";
return EXIT_FAILURE;
}
std::string infile_s(args[1]);
std::string outfile_s(args[2]);
ZopfliApi api(&sandbox);
ZopfliFormat format = ZOPFLI_FORMAT_DEFLATE;
if (absl::GetFlag(FLAGS_zlib)) {
format = ZOPFLI_FORMAT_ZLIB;
} else if (absl::GetFlag(FLAGS_gzip)) {
format = ZOPFLI_FORMAT_GZIP;
}
absl::Status status;
if (absl::GetFlag(FLAGS_stream)) {
status = CompressMain(api, infile_s, outfile_s, format);
} else {
status = CompressMainFD(api, infile_s, outfile_s, format);
}
if (!status.ok()) {
std::cerr << "Unable to compress file.\n";
std::cerr << status << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}