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1//===-- Allocating string utils ---------------------------------*- C++ -*-===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef LLVM_LIBC_SRC_STRING_ALLOCATING_STRING_UTILS_H10#define LLVM_LIBC_SRC_STRING_ALLOCATING_STRING_UTILS_H11 12#include "src/__support/CPP/new.h"13#include "src/__support/CPP/optional.h"14#include "src/__support/macros/config.h" // LIBC_NAMESPACE_DECL15#include "src/string/memory_utils/inline_memcpy.h"16#include "src/string/string_utils.h"17 18#include <stddef.h> // For size_t19 20namespace LIBC_NAMESPACE_DECL {21namespace internal {22 23template <typename T> LIBC_INLINE cpp::optional<T *> strdup(const T *src) {24 if (src == nullptr)25 return cpp::nullopt;26 size_t len = string_length(src) + 1;27 AllocChecker ac;28 T *newstr = new (ac) T[len];29 if (!ac)30 return cpp::nullopt;31 inline_memcpy(newstr, src, len * sizeof(T));32 return newstr;33}34 35} // namespace internal36} // namespace LIBC_NAMESPACE_DECL37 38#endif // LLVM_LIBC_SRC_STRING_ALLOCATING_STRING_UTILS_H39