From 2c6cfe6853a30deb4af842aacc924fa298d0521a Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Mon, 19 Dec 2005 12:11:38 +0000 Subject: Updated to fedora-glibc-20051219T1003 --- string/stpncpy.c | 100 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 100 insertions(+) create mode 100644 string/stpncpy.c (limited to 'string/stpncpy.c') diff --git a/string/stpncpy.c b/string/stpncpy.c new file mode 100644 index 0000000000..164d0f1747 --- /dev/null +++ b/string/stpncpy.c @@ -0,0 +1,100 @@ +/* Copyright (C) 1993, 1995, 1996, 1997, 2002 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +/* This is almost copied from strncpy.c, written by Torbjorn Granlund. */ + +#ifdef HAVE_CONFIG_H +# include +#endif + +#ifdef _LIBC +# include +#else +# include +#endif + +#ifndef weak_alias +# define __stpncpy stpncpy +#endif + +/* Copy no more than N characters of SRC to DEST, returning the address of + the terminating '\0' in DEST, if any, or else DEST + N. */ +char * +__stpncpy (dest, src, n) + char *dest; + const char *src; + size_t n; +{ + char c; + char *s = dest; + + if (n >= 4) + { + size_t n4 = n >> 2; + + for (;;) + { + c = *src++; + *dest++ = c; + if (c == '\0') + break; + c = *src++; + *dest++ = c; + if (c == '\0') + break; + c = *src++; + *dest++ = c; + if (c == '\0') + break; + c = *src++; + *dest++ = c; + if (c == '\0') + break; + if (--n4 == 0) + goto last_chars; + } + n -= dest - s; + goto zero_fill; + } + + last_chars: + n &= 3; + if (n == 0) + return dest; + + for (;;) + { + c = *src++; + --n; + *dest++ = c; + if (c == '\0') + break; + if (n == 0) + return dest; + } + + zero_fill: + while (n-- > 0) + dest[n] = '\0'; + + return dest - 1; +} +#ifdef weak_alias +libc_hidden_def (__stpncpy) +weak_alias (__stpncpy, stpncpy) +#endif -- cgit v1.2.3