sandboxed-api/oss-internship-2020/libpng/examples/example1.cc
Christian Blichmann 6cbde854d6 #Cleanup: Consistently use char* argv[] instead of char**
PiperOrigin-RevId: 444782296
Change-Id: If8e7647be28f794392675ae001abbe9b809da0ac
2022-04-27 00:43:51 -07:00

82 lines
2.6 KiB
C++

// Copyright 2020 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 <string>
#include "../sandboxed.h" // NOLINT(build/include)
#include "../tests/libpng.h" // NOLINT(build/include)
#include "sandboxed_api/vars.h"
absl::Status LibPNGMain(const std::string& infile, const std::string& outfile) {
LibPNGSapiSandbox sandbox;
sandbox.AddFile(infile);
sandbox.AddFile(outfile);
SAPI_RETURN_IF_ERROR(sandbox.Init());
LibPNGApi api(&sandbox);
sapi::v::Struct<png_image> image;
sapi::v::ConstCStr infile_var(infile.c_str());
sapi::v::ConstCStr outfile_var(outfile.c_str());
image.mutable_data()->version = PNG_IMAGE_VERSION;
SAPI_ASSIGN_OR_RETURN(
int result, api.png_image_begin_read_from_file(image.PtrBoth(),
infile_var.PtrBefore()));
if (!result) {
return absl::InternalError(
absl::StrCat("begin read error: ", image.mutable_data()->message));
}
image.mutable_data()->format = PNG_FORMAT_RGBA;
sapi::v::Array<uint8_t> buffer(PNG_IMAGE_SIZE(*image.mutable_data()));
sapi::v::NullPtr null = sapi::v::NullPtr();
SAPI_ASSIGN_OR_RETURN(result,
api.png_image_finish_read(image.PtrBoth(), &null,
buffer.PtrBoth(), 0, &null));
if (!result) {
return absl::InternalError(
absl::StrCat("finish read error: ", image.mutable_data()->message));
}
SAPI_ASSIGN_OR_RETURN(result, api.png_image_write_to_file(
image.PtrBoth(), outfile_var.PtrBefore(), 0,
buffer.PtrBoth(), 0, &null));
if (!result) {
return absl::InternalError(
absl::StrCat("write error: ", image.mutable_data()->message));
}
return absl::OkStatus();
}
int main(int argc, char* argv[]) {
if (argc != 3) {
LOG(ERROR) << "usage: example input-file output-file";
return EXIT_FAILURE;
}
auto status = LibPNGMain(argv[1], argv[2]);
if (!status.ok()) {
LOG(ERROR) << "LibPNGMain failed with error:\n"
<< status.ToString() << '\n';
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}