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//===-- Implementation of strndup -----------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "src/string/strndup.h"
#include "src/__support/macros/config.h"
#include "src/string/memory_utils/inline_memcpy.h"
#include "src/string/string_utils.h"
#include "src/__support/CPP/new.h"
#include "src/__support/common.h"
#include <stddef.h>
namespace LIBC_NAMESPACE_DECL {
LLVM_LIBC_FUNCTION(char *, strndup, (const char *src, size_t size)) {
if (src == nullptr)
return nullptr;
size_t len = internal::string_length(src);
if (len > size)
len = size;
AllocChecker ac;
char *dest = new (ac) char[len + 1];
if (!ac)
return nullptr;
inline_memcpy(dest, src, len + 1);
dest[len] = '\0';
return dest;
}
} // namespace LIBC_NAMESPACE_DECL
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