sandboxed-api/oss-internship-2020/gdal/raster_to_gtiff/utils.h

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// 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
//
// 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.
#ifndef RASTER_TO_GTIFF_UTILS_H_
#define RASTER_TO_GTIFF_UTILS_H_
#include <optional>
#include <string>
#include "absl/strings/string_view.h"
namespace gdal::sandbox::utils {
// RAII wrapper that creates temporary file and automatically unlinks it
class TempFile {
public:
explicit TempFile(absl::string_view prefix);
TempFile(const TempFile&) = delete;
TempFile& operator=(const TempFile&) = delete;
TempFile(TempFile&&) = delete;
TempFile& operator=(TempFile&&) = delete;
~TempFile();
bool HasValue() const;
int GetFd() const;
std::string GetPath() const;
private:
std::optional<std::pair<std::string, int>> file_data_ = std::nullopt;
};
// Helper function to retrieve potential proj.db path from environment variable
std::optional<std::string> FindProjDbPath();
// Tries to get test folder path from the TEST_SRCDIR environment variable and
// uses CWD path otherwise to join it with the testdata_path
std::string GetTestDataPath(absl::string_view testdata_path);
} // namespace gdal::sandbox::utils
#endif // RASTER_TO_GTIFF_UTILS_H_