/libs/libc/wchar/lib_wcslcpy.c
C | 93 lines | 31 code | 12 blank | 50 comment | 13 complexity | 842fae0f36cfae50e2d76fe99f5f92c5 MD5 | raw file
Possible License(s): 0BSD
- /****************************************************************************
- * libs/libc/wchar/lib_wcslcpy.c
- *
- * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
- * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
- /****************************************************************************
- * Included Files
- ****************************************************************************/
- #include <nuttx/config.h>
- #include <string.h>
- #include <wchar.h>
- #ifdef CONFIG_LIBC_WCHAR
- /****************************************************************************
- * Pre-processor Definitions
- ****************************************************************************/
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: wcslen
- *
- * Description:
- * Copy src to string dst of size siz. At most siz-1 characters
- * will be copied. Always NUL terminates (unless siz == 0).
- * Returns wcslen(src); if retval >= siz, truncation occurred.
- *
- ****************************************************************************/
- size_t wcslcpy(FAR wchar_t *dst, FAR const wchar_t *src, size_t siz)
- {
- FAR wchar_t *d = dst;
- FAR const wchar_t *s = src;
- size_t n = siz;
- /* Copy as many bytes as will fit */
- if (n != 0 && --n != 0)
- {
- do
- {
- if ((*d++ = *s++) == 0)
- {
- break;
- }
- }
- while (--n != 0);
- }
- /* Not enough room in dst, add NUL and traverse rest of src */
- if (n == 0)
- {
- if (siz != 0)
- {
- *d = '\0'; /* NUL-terminate dst */
- }
- while (*s++);
- }
- return (s - src - 1); /* count does not include NUL */
- }
- #endif