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af0cfd5a57
TEST=util_test strnlen.strnlen R=rsesek@chromium.org Review URL: https://codereview.chromium.org/514253002
50 lines
1.6 KiB
C++
50 lines
1.6 KiB
C++
// Copyright 2014 The Crashpad Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef CRASHPAD_UTIL_STDLIB_STRNLEN_H_
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#define CRASHPAD_UTIL_STDLIB_STRNLEN_H_
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#include <string.h>
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#include "build/build_config.h"
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#if defined(OS_MACOSX)
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#include <AvailabilityMacros.h>
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#endif
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namespace crashpad {
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//! \brief Returns the length of a string, not to exceed a maximum.
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//!
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//! \param[in] string The string whose length is to be calculated.
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//! \param[in] max_length The maximum length to return.
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//!
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//! \return The length of \a string, determined as the index of the first `NUL`
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//! byte found, not exceeding \a max_length.
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//!
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//! \note This function is provided because it was introduced in POSIX.1-2008,
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//! and not all systems’ standard libraries provide an implementation.
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size_t strnlen(const char* string, size_t max_length);
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#if !defined(OS_MACOSX) || \
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MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_7
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inline size_t strnlen(const char* string, size_t max_length) {
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return ::strnlen(string, max_length);
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}
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#endif
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} // namespace crashpad
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#endif // CRASHPAD_UTIL_STDLIB_STRNLEN_H_
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