79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
/****************************************************************************
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* libs/libc/string/lib_strlcpy.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <string.h>
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#include "libc.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: strlcpy
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*
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* Description:
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* Copy src to string dst of size dsize. At most dsize-1 characters
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* will be copied. Always NUL terminates (unless dsize == 0).
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*
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* Returned Value:
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* Returns strlen(src); if retval >= dsize, truncation occurred.
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*
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****************************************************************************/
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#if !defined(CONFIG_LIBC_ARCH_STRLCPY) && defined(LIBC_BUILD_STRING)
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#undef strlcpy /* See mm/README.txt */
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size_t strlcpy(FAR char *dst, FAR const char *src, size_t dsize)
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{
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FAR const char *osrc = src;
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size_t nleft = dsize;
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if (nleft != 0)
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{
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while (--nleft != 0)
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{
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if ((*dst++ = *src++) == '\0')
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{
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break;
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}
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}
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}
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if (nleft == 0)
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{
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if (dsize != 0)
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{
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*dst = '\0';
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}
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while (*src++ != '\0');
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}
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return src - osrc - 1;
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}
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#endif
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