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glibc  2.9
test-stpncpy.c
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00001 /* Test and measure stpncpy functions.
00002    Copyright (C) 1999, 2002 Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004    Written by Jakub Jelinek <jakub@redhat.com>, 1999.
00005 
00006    The GNU C Library is free software; you can redistribute it and/or
00007    modify it under the terms of the GNU Lesser General Public
00008    License as published by the Free Software Foundation; either
00009    version 2.1 of the License, or (at your option) any later version.
00010 
00011    The GNU C Library is distributed in the hope that it will be useful,
00012    but WITHOUT ANY WARRANTY; without even the implied warranty of
00013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014    Lesser General Public License for more details.
00015 
00016    You should have received a copy of the GNU Lesser General Public
00017    License along with the GNU C Library; if not, write to the Free
00018    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00019    02111-1307 USA.  */
00020 
00021 #define STRNCPY_RESULT(dst, len, n) ((dst) + ((len) > (n) ? (n) : (len)))
00022 #define TEST_MAIN
00023 #include "test-string.h"
00024 
00025 char *simple_stpncpy (char *, const char *, size_t);
00026 char *stupid_stpncpy (char *, const char *, size_t);
00027 
00028 IMPL (stupid_stpncpy, 0)
00029 IMPL (simple_stpncpy, 0)
00030 IMPL (stpncpy, 1)
00031 
00032 char *
00033 simple_stpncpy (char *dst, const char *src, size_t n)
00034 {
00035   while (n--)
00036     if ((*dst++ = *src++) == '\0')
00037       {
00038        size_t i;
00039 
00040        for (i = 0; i < n; ++i)
00041          dst[i] = '\0';
00042        return dst - 1;
00043       }
00044   return dst;
00045 }
00046 
00047 char *
00048 stupid_stpncpy (char *dst, const char *src, size_t n)
00049 {
00050   size_t nc = strnlen (src, n);
00051   size_t i;
00052 
00053   for (i = 0; i < nc; ++i)
00054     dst[i] = src[i];
00055   for (; i < n; ++i)
00056     dst[i] = '\0';
00057   return dst + nc;
00058 }
00059 
00060 #include "test-strncpy.c"