diff options
Diffstat (limited to 'stdio/getdelim.c')
| -rw-r--r-- | stdio/getdelim.c | 177 |
1 files changed, 0 insertions, 177 deletions
diff --git a/stdio/getdelim.c b/stdio/getdelim.c deleted file mode 100644 index b8c9e74..0000000 --- a/stdio/getdelim.c +++ /dev/null @@ -1,177 +0,0 @@ -/* Copyright (C) 1991, 1992, 1995, 1996, 1997 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include <stddef.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <limits.h> -#include <errno.h> - -/* Read up to (and including) a TERMINATOR from STREAM into *LINEPTR - (and null-terminate it). *LINEPTR is a pointer returned from malloc (or - NULL), pointing to *N characters of space. It is realloc'd as - necessary. Returns the number of characters read (not including the - null terminator), or -1 on error or EOF. */ - -ssize_t -__getdelim (lineptr, n, terminator, stream) - char **lineptr; - size_t *n; - int terminator; - FILE *stream; -{ - char *line, *p; - size_t size, copy; - - if (!__validfp (stream) || lineptr == NULL || n == NULL) - { - __set_errno (EINVAL); - return -1; - } - - if (ferror (stream)) - return -1; - - /* Make sure we have a line buffer to start with. */ - if (*lineptr == NULL || *n < 2) /* !seen and no buf yet need 2 chars. */ - { -#ifndef MAX_CANON -#define MAX_CANON 256 -#endif - line = realloc (*lineptr, MAX_CANON); - if (line == NULL) - return -1; - *lineptr = line; - *n = MAX_CANON; - } - - line = *lineptr; - size = *n; - - copy = size; - p = line; - - if (stream->__buffer == NULL && stream->__userbuf) - { - /* Unbuffered stream. Not much optimization to do. */ - - while (1) - { - size_t len; - - while (--copy > 0) - { - register int c = getc (stream); - if (c == EOF) - goto lose; - else if ((*p++ = c) == terminator) - goto win; - } - - /* Need to enlarge the line buffer. */ - len = p - line; - size *= 2; - line = realloc (line, size); - if (line == NULL) - goto lose; - *lineptr = line; - *n = size; - p = line + len; - copy = size - len; - } - } - else - { - /* Leave space for the terminating null. */ - --copy; - - if (!stream->__seen || stream->__buffer == NULL || stream->__pushed_back) - { - /* Do one with getc to allocate a buffer. */ - int c = getc (stream); - if (c == EOF) - goto lose; - *p++ = c; - if (c == terminator) - goto win; - --copy; - } - - while (1) - { - size_t i; - char *found; - - i = stream->__get_limit - stream->__bufp; - if (i == 0) - { - /* Refill the buffer. */ - int c = __fillbf (stream); - if (c == EOF) - goto lose; - *p++ = c; - if (c == terminator) - goto win; - --copy; - i = stream->__get_limit - stream->__bufp; - } - - if (i > copy) - i = copy; - - found = (char *) __memccpy ((void *) p, stream->__bufp, - terminator, i); - if (found != NULL) - { - stream->__bufp += found - p; - p = found; - goto win; - } - - stream->__bufp += i; - p += i; - copy -= i; - if (copy == 0) - { - /* Need to enlarge the line buffer. */ - size_t len = p - line; - size *= 2; - line = realloc (line, size); - if (line == NULL) - goto lose; - *lineptr = line; - *n = size; - p = line + len; - copy = size - len; - /* Leave space for the terminating null. */ - --copy; - } - } - } - - lose: - if (p == *lineptr) - return -1; - /* Return a partial line since we got an error in the middle. */ - win: - *p = '\0'; - return p - *lineptr; -} - -weak_alias (__getdelim, getdelim) |