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49 lines
1.5 KiB
C
49 lines
1.5 KiB
C
/* Implement the stpncpy function.
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Copyright (C) 2003-2017 Free Software Foundation, Inc.
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Written by Kaveh R. Ghazi <ghazi@caip.rutgers.edu>.
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This file is part of the libiberty library.
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Libiberty is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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Libiberty is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with libiberty; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
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Boston, MA 02110-1301, USA. */
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/*
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@deftypefn Supplemental char* stpncpy (char *@var{dst}, const char *@var{src}, @
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size_t @var{len})
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Copies the string @var{src} into @var{dst}, copying exactly @var{len}
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and padding with zeros if necessary. If @var{len} < strlen(@var{src})
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then return @var{dst} + @var{len}, otherwise returns @var{dst} +
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strlen(@var{src}).
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@end deftypefn
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*/
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#include <ansidecl.h>
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#include <stddef.h>
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extern size_t strlen (const char *);
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extern char *strncpy (char *, const char *, size_t);
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char *
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stpncpy (char *dst, const char *src, size_t len)
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{
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size_t n = strlen (src);
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if (n > len)
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n = len;
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return strncpy (dst, src, len) + n;
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}
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