diff options
Diffstat (limited to 'src/gl/getdelim.c')
-rw-r--r-- | src/gl/getdelim.c | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/src/gl/getdelim.c b/src/gl/getdelim.c deleted file mode 100644 index 175d5c79c0..0000000000 --- a/src/gl/getdelim.c +++ /dev/null @@ -1,147 +0,0 @@ -/* getdelim.c --- Implementation of replacement getdelim function. - Copyright (C) 1994, 1996-1998, 2001, 2003, 2005-2016 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, see <http://www.gnu.org/licenses/>. */ - -/* Ported from glibc by Simon Josefsson. */ - -/* Don't use __attribute__ __nonnull__ in this compilation unit. Otherwise gcc - optimizes away the lineptr == NULL || n == NULL || fp == NULL tests below. */ -#define _GL_ARG_NONNULL(params) - -#include <config.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 - -static void -alloc_failed (void) -{ -#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__ - /* Avoid errno problem without using the realloc module; see: - http://lists.gnu.org/archive/html/bug-gnulib/2016-08/msg00025.html */ - errno = ENOMEM; -#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; - 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) - { - alloc_failed (); - 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) - { - alloc_failed (); - 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 ? cur_len : result; - - unlock_return: - funlockfile (fp); /* doesn't set errno */ - - return result; -} |