diff options
Diffstat (limited to 'lib/getdelim.c')
-rw-r--r-- | lib/getdelim.c | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/lib/getdelim.c b/lib/getdelim.c deleted file mode 100644 index a131b0c63..000000000 --- a/lib/getdelim.c +++ /dev/null @@ -1,128 +0,0 @@ -/* getdelim.c --- Implementation of replacement getdelim function. - Copyright (C) 1994, 1996, 1997, 1998, 2001, 2003, 2005 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 2, 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. */ - -#ifdef HAVE_CONFIG_H -# include <config.h> -#endif - -#include "getdelim.h" - -#include <limits.h> -#include <stdlib.h> -#include <errno.h> - -#ifndef SIZE_MAX -# define SIZE_MAX ((size_t) -1) -#endif -#ifndef SSIZE_MAX -# define SSIZE_MAX ((ssize_t) (SIZE_MAX / 2)) -#endif -#if !HAVE_FLOCKFILE -# undef flockfile -# define flockfile(x) ((void) 0) -#endif -#if !HAVE_FUNLOCKFILE -# undef funlockfile -# define funlockfile(x) ((void) 0) -#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) - { - *n = 120; - *lineptr = (char *) malloc (*n); - if (*lineptr == NULL) - { - result = -1; - goto unlock_return; - } - } - - for (;;) - { - int i; - - i = getc (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; - 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 ? cur_len : result; - - unlock_return: - funlockfile (fp); - return result; -} |