incubator-nuttx/libs/libc/string/lib_strcpy.c

56 lines
2.0 KiB
C

/****************************************************************************
* libs/libc/string/lib_strcpy.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <string.h>
#include "libc.h"
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: strcpy
*
* Description:
* Copies the string pointed to by 'src' (including the terminating NUL
* character) into the array pointed to by 'des'.
*
* Returned Value:
* The strcpy() function returns the 'dest' pointer
*
****************************************************************************/
#if !defined(CONFIG_LIBC_ARCH_STRCPY) && defined(LIBC_BUILD_STRCPY)
#undef strcpy /* See mm/README.txt */
FAR char *strcpy(FAR char *dest, FAR const char *src)
{
FAR char *tmp = dest;
while ((*dest++ = *src++) != '\0');
return tmp;
}
#endif