mirror of https://github.com/acidanthera/audk.git
81 lines
3.0 KiB
C
81 lines
3.0 KiB
C
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/** @file
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Copying Functions for <wchar.h>.
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Unless explicitly stated otherwise, if the execution of a function declared
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in this file causes copying to take place between objects that overlap, the
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behavior is undefined.
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Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials are licensed and made available under
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the terms and conditions of the BSD License that accompanies this distribution.
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The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <Uefi.h>
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#include <Library/BaseLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <LibConfig.h>
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#include <wchar.h>
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/** The wcscpy function copies the wide string pointed to by s2 (including the
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terminating null wide character) into the array pointed to by s1.
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@return The wcscpy function returns the value of s1.
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**/
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wchar_t *wcscpy(wchar_t * __restrict s1, const wchar_t * __restrict s2)
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{
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return (wchar_t *)StrCpy( (CHAR16 *)s1, (CONST CHAR16 *)s2);
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}
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/** The wcsncpy function copies not more than n wide characters (those that
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follow a null wide character are not copied) from the array pointed to by
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s2 to the array pointed to by s1.
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If the array pointed to by s2 is a wide string that is shorter than n wide
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characters, null wide characters are appended to the copy in the array
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pointed to by s1, until n wide characters in all have been written.
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@return The wcsncpy function returns the value of s1.
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**/
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wchar_t *wcsncpy(wchar_t * __restrict s1, const wchar_t * __restrict s2, size_t n)
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{
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return (wchar_t *)StrnCpy( (CHAR16 *)s1, (CONST CHAR16 *)s2, (UINTN)n);
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}
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/** The wmemcpy function copies n wide characters from the object pointed to by
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s2 to the object pointed to by s1.
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Use this function if you know that s1 and s2 DO NOT Overlap. Otherwise,
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use wmemmove.
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@return The wmemcpy function returns the value of s1.
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**/
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wchar_t *wmemcpy(wchar_t * __restrict s1, const wchar_t * __restrict s2, size_t n)
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{
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return (wchar_t *)CopyMem( s1, s2, (UINTN)(n * sizeof(wchar_t)));
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}
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/** The wmemmove function copies n wide characters from the object pointed to by
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s2 to the object pointed to by s1. The objects pointed to by s1 and s2 are
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allowed to overlap.
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Because the UEFI BaseMemoryLib function CopyMem explicitly handles
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overlapping source and destination objects, this function and wmemcpy are
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implemented identically.
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For programming clarity, it is recommended that you use wmemcpy if you know
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that s1 and s2 DO NOT Overlap. If s1 and s2 might possibly overlap, then
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use wmemmove.
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@return The wmemmove function returns the value of s1.
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**/
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wchar_t *wmemmove(wchar_t *s1, const wchar_t *s2, size_t n)
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{
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return (wchar_t *)CopyMem( s1, s2, (UINTN)(n * sizeof(wchar_t)));
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}
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