| // Copyright 2023 The PDFium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| |
| #ifndef CORE_FXCRT_FX_MEMCPY_WRAPPERS_H_ |
| #define CORE_FXCRT_FX_MEMCPY_WRAPPERS_H_ |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| #include <string.h> |
| #include <wchar.h> |
| |
| #include "core/fxcrt/compiler_specific.h" |
| |
| // Wrappers to avoid the zero-length w/NULL arg gotchas in C spec. Use these |
| // if there is a possibility of a NULL arg (or a bad arg) that is to be ignored |
| // when the length is zero, otherwise just call the C Run Time Library function |
| // itself. |
| UNSAFE_BUFFER_USAGE inline int FXSYS_memcmp(const void* ptr1, |
| const void* ptr2, |
| size_t len) { |
| return len ? memcmp(ptr1, ptr2, len) : 0; |
| } |
| |
| UNSAFE_BUFFER_USAGE inline int FXSYS_wmemcmp(const wchar_t* ptr1, |
| const wchar_t* ptr2, |
| size_t len) { |
| return len ? wmemcmp(ptr1, ptr2, len) : 0; |
| } |
| |
| UNSAFE_BUFFER_USAGE inline void* FXSYS_memcpy(void* ptr1, |
| const void* ptr2, |
| size_t len) { |
| return len ? memcpy(ptr1, ptr2, len) : ptr1; |
| } |
| |
| UNSAFE_BUFFER_USAGE inline wchar_t* FXSYS_wmemcpy(wchar_t* ptr1, |
| const wchar_t* ptr2, |
| size_t len) { |
| return len ? wmemcpy(ptr1, ptr2, len) : ptr1; |
| } |
| |
| UNSAFE_BUFFER_USAGE inline void* FXSYS_memmove(void* ptr1, |
| const void* ptr2, |
| size_t len) { |
| return len ? memmove(ptr1, ptr2, len) : ptr1; |
| } |
| |
| UNSAFE_BUFFER_USAGE inline wchar_t* FXSYS_wmemmove(wchar_t* ptr1, |
| const wchar_t* ptr2, |
| size_t len) { |
| return len ? wmemmove(ptr1, ptr2, len) : ptr1; |
| } |
| |
| UNSAFE_BUFFER_USAGE inline void* FXSYS_memset(void* ptr1, int val, size_t len) { |
| return len ? memset(ptr1, val, len) : ptr1; |
| } |
| |
| UNSAFE_BUFFER_USAGE inline wchar_t* FXSYS_wmemset(wchar_t* ptr1, |
| int val, |
| size_t len) { |
| return len ? wmemset(ptr1, val, len) : ptr1; |
| } |
| |
| UNSAFE_BUFFER_USAGE inline const void* FXSYS_memchr(const void* ptr1, |
| int val, |
| size_t len) { |
| return len ? memchr(ptr1, val, len) : nullptr; |
| } |
| |
| UNSAFE_BUFFER_USAGE inline const wchar_t* FXSYS_wmemchr(const wchar_t* ptr1, |
| wchar_t val, |
| size_t len) { |
| return len ? wmemchr(ptr1, val, len) : nullptr; |
| } |
| |
| #endif // CORE_FXCRT_FX_MEMCPY_WRAPPERS_H_ |