+
−/* xmemdup0.c -- copy a block of arbitrary bytes, plus a trailing NUL
+
−
+
−   Copyright (C) 2008-2015 Free Software Foundation, Inc.
+
−
+
−   This program is free software: you can redistribute it and/or modify
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−   it under the terms of the GNU General Public License as published by
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−   the Free Software Foundation; either version 3 of the License, or
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−   (at your option) any later version.
+
−
+
−   This program 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
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−   GNU General Public License for more details.
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−
+
−   You should have received a copy of the GNU General Public License
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−   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
−
+
−#include <config.h>
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−
+
−#include "xmemdup0.h"
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−#include "xalloc.h"
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−
+
−#include <string.h>
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−
+
−/* Clone an arbitrary block of bytes P of size S, with error checking,
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−   and include a terminating NUL byte.  P is of type 'void const *',
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−   to make it easier to use this with other mem* functions that return
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−   'void *', but since appending a NUL byte only makes sense on bytes,
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−   the return type is 'char *'.
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−
+
−   The terminating NUL makes it safe to use strlen or rawmemchr to
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−   check for embedded NUL; it also speeds up algorithms such as escape
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−   sequence processing on arbitrary memory, by making it always safe
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−   to read the byte after the escape character rather than having to
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−   check if each escape character is the last byte in the object.  */
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−
+
−char *
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−xmemdup0 (void const *p, size_t s)
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−{
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−  char *result = xcharalloc (s + 1);
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−  memcpy (result, p, s);
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−  result[s] = 0;
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−  return result;
+
−}