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Diffstat (limited to 'libiberty/xstrndup.c')
-rw-r--r-- | libiberty/xstrndup.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/libiberty/xstrndup.c b/libiberty/xstrndup.c new file mode 100644 index 0000000..b481e4a --- /dev/null +++ b/libiberty/xstrndup.c @@ -0,0 +1,62 @@ +/* Implement the xstrndup function. + Copyright (C) 2005 Free Software Foundation, Inc. + Written by Kaveh R. Ghazi <ghazi@caip.rutgers.edu>. + +This file is part of the libiberty library. +Libiberty is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public +License as published by the Free Software Foundation; either +version 2 of the License, or (at your option) any later version. + +Libiberty 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with libiberty; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ + +/* + +@deftypefn Replacement char* xstrndup (const char *@var{s}, size_t @var{n}) + +Returns a pointer to a copy of @var{s} with at most @var{n} characters +without fail, using @code{xmalloc} to obtain memory. The result is +always NUL terminated. + +@end deftypefn + +*/ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif +#include <sys/types.h> +#ifdef HAVE_STRING_H +#include <string.h> +#else +# ifdef HAVE_STRINGS_H +# include <strings.h> +# endif +#endif +#include "ansidecl.h" +#include "libiberty.h" + +char * +xstrndup (s, n) + const char *s; + size_t n; +{ + char *result; + size_t len = strlen (s); + + if (n < len) + len = n; + + result = xmalloc (len + 1); + + result[len] = '\0'; + return memcpy (result, s, len); +} |