mirror of
https://https.git.savannah.gnu.org/git/findutils.git
synced 2026-01-26 15:39:06 +00:00
d5234fe96a
* find/exec.c (initialise_wd_for_exec): rename to initialize_wd_for_exec, since "initialize" is the preferred form even in UK spelling (the OED says "initialise" is a variant). Update callers (it's a static function). Update spelling in comments. * find/find.c (main): Fix missing "to" in error message and update "initialise" to "initialize". Update comment too. * find/ftsfind.c (main): Update spelling in error message. * lib/listfile.c (print_name_with_quoting): spelling change in comment. * find/tree.c (init_pred_perf): Likewise. * lib/extendbuf.c (extendbuf): Likewise. * lib/splitstring.h: Likewise. * find/print.c (format_date): Likewise. * doc/find-maint.texi (Tools): Update spelling.
123 lines
2.6 KiB
C
123 lines
2.6 KiB
C
/* extendbuf.c -- manage a dynamically-allocated buffer
|
|
|
|
Copyright 2004, 2010, 2011 Free Software Foundation, Inc.
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program 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 General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
/* Written by James Yougnman <jay@gnu.org>. */
|
|
|
|
/* config.h must be included first. */
|
|
#include <config.h>
|
|
|
|
/* system headers. */
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
|
|
/* gnulib headers. */
|
|
#include "xalloc.h"
|
|
|
|
/* find headers. */
|
|
#include "extendbuf.h"
|
|
|
|
|
|
/* We initially use a small default size to ensure that this code
|
|
* gets exercised.
|
|
*/
|
|
#ifndef SIZE_DEFAULT
|
|
# define SIZE_DEFAULT 16
|
|
#endif
|
|
|
|
static size_t
|
|
decide_size (size_t current, size_t wanted)
|
|
{
|
|
size_t newsize;
|
|
|
|
if (0 == current)
|
|
newsize = SIZE_DEFAULT;
|
|
else
|
|
newsize = current;
|
|
|
|
while (newsize < wanted)
|
|
{
|
|
if (2 * newsize < newsize)
|
|
return wanted;
|
|
newsize *= 2;
|
|
}
|
|
return newsize;
|
|
}
|
|
|
|
|
|
void *
|
|
extendbuf (void* existing, size_t wanted, size_t *allocated)
|
|
{
|
|
int saved_errno;
|
|
size_t newsize;
|
|
void *result; /* leave uninitialized to allow static code checkers to identify bugs */
|
|
|
|
saved_errno = errno;
|
|
|
|
assert (wanted > 0u);
|
|
newsize = decide_size (*allocated, wanted);
|
|
|
|
if ( (*allocated) == 0 )
|
|
{
|
|
/* Sanity check: If there is no existing allocation size, there
|
|
* must be no existing allocated buffer.
|
|
*/
|
|
assert (NULL == existing);
|
|
|
|
(*allocated) = newsize;
|
|
result = malloc (newsize);
|
|
}
|
|
else
|
|
{
|
|
if (newsize != (*allocated) )
|
|
{
|
|
(*allocated) = newsize;
|
|
result = realloc (existing, newsize);
|
|
if (NULL == result)
|
|
{
|
|
saved_errno = errno;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
result = existing;
|
|
}
|
|
}
|
|
|
|
if (result)
|
|
{
|
|
/* malloc () or realloc () may have changed errno, but in the
|
|
success case we want to preserve the previous value.
|
|
*/
|
|
errno = saved_errno;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
void *
|
|
xextendbuf (void* existing, size_t wanted, size_t *allocated)
|
|
{
|
|
void *p = extendbuf (existing, wanted, allocated);
|
|
if (NULL == p)
|
|
{
|
|
free (existing);
|
|
xalloc_die ();
|
|
}
|
|
return p;
|
|
}
|