| 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-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #ifndef LLVM_LIBC_SRC_STRING_ALLOCATING_STRING_UTILS_H |
| 10 | #define LLVM_LIBC_SRC_STRING_ALLOCATING_STRING_UTILS_H |
| 11 | |
| 12 | #include "src/__support/CPP/new.h" |
| 13 | #include "src/__support/CPP/optional.h" |
| 14 | #include "src/__support/macros/config.h" |
| 15 | #include "src/string/memory_utils/inline_memcpy.h" |
| 16 | #include "src/string/string_utils.h" |
| 17 | |
| 18 | #include <stddef.h> // For size_t |
| 19 | |
| 20 | namespace LIBC_NAMESPACE { |
| 21 | namespace internal { |
| 22 | |
| 23 | LIBC_INLINE cpp::optional<char *> strdup(const char *src) { |
| 24 | if (src == nullptr) |
| 25 | return cpp::nullopt; |
| 26 | size_t len = string_length(src) + 1; |
| 27 | AllocChecker ac; |
| 28 | char *newstr = new (ac) char[len]; |
| 29 | if (!ac) |
| 30 | return cpp::nullopt; |
| 31 | inline_memcpy(dst: newstr, src, count: len); |
| 32 | return newstr; |
| 33 | } |
| 34 | |
| 35 | } // namespace internal |
| 36 | } // namespace LIBC_NAMESPACE |
| 37 | |
| 38 | #endif // LLVM_LIBC_SRC_STRING_ALLOCATING_STRING_UTILS_H |
| 39 |