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// Copyright 2017 The Bazel Authors. All rights reserved.
//
// 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 BAZEL_SRC_TEST_CPP_UTIL_TEST_UTIL_H_
#define BAZEL_SRC_TEST_CPP_UTIL_TEST_UTIL_H_
#include <stdio.h>
#if !defined(COMPILER_MSVC) && !defined(__CYGWIN__)
#include <unistd.h>
#endif // not COMPILER_MSVC and not __CYGWIN__
namespace blaze_util {
template <typename handle_type, handle_type null_value,
int (*close_func)(handle_type)>
struct AutoFileHandle {
AutoFileHandle(handle_type _fd = null_value) : fd(_fd) {}
~AutoFileHandle() { Close(); }
int Close() {
int result = 0;
if (fd != null_value) {
result = close_func(fd);
fd = null_value;
}
return result;
}
bool IsOpen() { return fd != null_value; }
operator handle_type() const { return fd; }
AutoFileHandle& operator=(const handle_type& rhs) {
Close();
fd = rhs;
return *this;
}
handle_type fd;
};
#if !defined(COMPILER_MSVC) && !defined(__CYGWIN__)
typedef struct AutoFileHandle<int, -1, close> AutoFd;
#endif // not COMPILER_MSVC and not __CYGWIN__
typedef struct AutoFileHandle<FILE*, nullptr, fclose> AutoFileStream;
} // namespace blaze_util
#endif // BAZEL_SRC_TEST_CPP_UTIL_TEST_UTIL_H_
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