mirror of
https://git.notmuchmail.org/git/notmuch
synced 2024-11-25 12:28:09 +01:00
8099050c71
This is the result of running
$ uncrustify --replace --config ../devel/uncrustify.cfg *.c *.h
in the compat directory
125 lines
3.2 KiB
C
125 lines
3.2 KiB
C
/* getdelim.c --- Implementation of replacement getdelim function.
|
|
* Copyright (C) 1994, 1996, 1997, 1998, 2001, 2003, 2005, 2006, 2007,
|
|
* 2008, 2009 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, 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, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
|
* 02110-1301, USA. */
|
|
|
|
/* Ported from glibc by Simon Josefsson. */
|
|
|
|
#include "compat.h"
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <limits.h>
|
|
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
#include <errno.h>
|
|
|
|
#ifndef SSIZE_MAX
|
|
# define SSIZE_MAX ((ssize_t) (SIZE_MAX / 2))
|
|
#endif
|
|
|
|
#if USE_UNLOCKED_IO
|
|
# include "unlocked-io.h"
|
|
# define getc_maybe_unlocked(fp) getc (fp)
|
|
#elif ! HAVE_FLOCKFILE || ! HAVE_FUNLOCKFILE || ! HAVE_DECL_GETC_UNLOCKED
|
|
# undef flockfile
|
|
# undef funlockfile
|
|
# define flockfile(x) ((void) 0)
|
|
# define funlockfile(x) ((void) 0)
|
|
# define getc_maybe_unlocked(fp) getc (fp)
|
|
#else
|
|
# define getc_maybe_unlocked(fp) getc_unlocked (fp)
|
|
#endif
|
|
|
|
/* Read up to (and including) a DELIMITER from FP into *LINEPTR (and
|
|
* NUL-terminate it). *LINEPTR is a pointer returned from malloc (or
|
|
* NULL), pointing to *N characters of space. It is realloc'ed as
|
|
* necessary. Returns the number of characters read (not including
|
|
* the null terminator), or -1 on error or EOF. */
|
|
|
|
ssize_t
|
|
getdelim (char **lineptr, size_t *n, int delimiter, FILE *fp)
|
|
{
|
|
ssize_t result = -1;
|
|
size_t cur_len = 0;
|
|
|
|
if (lineptr == NULL || n == NULL || fp == NULL) {
|
|
errno = EINVAL;
|
|
return -1;
|
|
}
|
|
|
|
flockfile (fp);
|
|
|
|
if (*lineptr == NULL || *n == 0) {
|
|
char *new_lineptr;
|
|
*n = 120;
|
|
new_lineptr = (char *) realloc (*lineptr, *n);
|
|
if (new_lineptr == NULL) {
|
|
result = -1;
|
|
goto unlock_return;
|
|
}
|
|
*lineptr = new_lineptr;
|
|
}
|
|
|
|
for (;;) {
|
|
int i;
|
|
|
|
i = getc_maybe_unlocked (fp);
|
|
if (i == EOF) {
|
|
result = -1;
|
|
break;
|
|
}
|
|
|
|
/* Make enough space for len+1 (for final NUL) bytes. */
|
|
if (cur_len + 1 >= *n) {
|
|
size_t needed_max =
|
|
SSIZE_MAX < SIZE_MAX ? (size_t) SSIZE_MAX + 1 : SIZE_MAX;
|
|
size_t needed = 2 * *n + 1; /* Be generous. */
|
|
char *new_lineptr;
|
|
|
|
if (needed_max < needed)
|
|
needed = needed_max;
|
|
if (cur_len + 1 >= needed) {
|
|
result = -1;
|
|
errno = EOVERFLOW;
|
|
goto unlock_return;
|
|
}
|
|
|
|
new_lineptr = (char *) realloc (*lineptr, needed);
|
|
if (new_lineptr == NULL) {
|
|
result = -1;
|
|
goto unlock_return;
|
|
}
|
|
|
|
*lineptr = new_lineptr;
|
|
*n = needed;
|
|
}
|
|
|
|
(*lineptr)[cur_len] = i;
|
|
cur_len++;
|
|
|
|
if (i == delimiter)
|
|
break;
|
|
}
|
|
(*lineptr)[cur_len] = '\0';
|
|
result = cur_len ? (ssize_t) cur_len : result;
|
|
|
|
unlock_return:
|
|
funlockfile (fp); /* doesn't set errno */
|
|
|
|
return result;
|
|
}
|