/* getndelim2 - Read a line from a stream, stopping at one of 2 delimiters,
with bounded memory allocation.
- Copyright (C) 1993, 1996, 1997, 1998, 2000, 2003, 2004, 2006 Free
+ Copyright (C) 1993, 1996, 1997, 1998, 2000, 2003, 2004, 2006, 2008 Free
Software Foundation, Inc.
- This program is free software; you can redistribute it and/or modify
+ 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 2, or (at your option)
- any later version.
+ 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
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, write to the Free Software Foundation,
- Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* Originally written by Jan Brittenson, bson@gnu.ai.mit.edu. */
#if USE_UNLOCKED_IO
# include "unlocked-io.h"
#endif
+#if !HAVE_FLOCKFILE
+# undef flockfile
+# define flockfile(x) ((void) 0)
+#endif
+#if !HAVE_FUNLOCKFILE
+# undef funlockfile
+# define funlockfile(x) ((void) 0)
+#endif
#include <limits.h>
#include <stdint.h>
-/* Mingw doesn't have SSIZE_MAX. */
#ifndef SSIZE_MAX
-# define SSIZE_MAX ((((ssize_t)1 << (sizeof (ssize_t) * CHAR_BIT - 2)) - 1) * 2 + 1)
+# define SSIZE_MAX ((ssize_t) (SIZE_MAX / 2))
#endif
/* The maximum value that getndelim2 can return without suffering from
if (nbytes_avail == 0 && nmax <= size)
goto done;
+ flockfile (stream);
+
for (;;)
{
/* Here always ptr + size == read_pos + nbytes_avail. */
{
size_t newsizemax = offset + GETNDELIM2_MAXIMUM + 1;
if (size == newsizemax)
- goto done;
+ goto unlock_done;
newsize = newsizemax;
}
nbytes_avail = newsize - (read_pos - ptr);
newptr = realloc (ptr, newsize);
if (!newptr)
- goto done;
+ goto unlock_done;
ptr = newptr;
size = newsize;
read_pos = size - nbytes_avail + ptr;
{
/* Return partial line, if any. */
if (read_pos == ptr)
- goto done;
+ goto unlock_done;
else
break;
}
bytes_stored = read_pos - (ptr + offset);
+ unlock_done:
+ funlockfile (stream);
+
done:
*lineptr = ptr;
*linesize = size;
- return bytes_stored;
+ return bytes_stored ? bytes_stored : -1;
}