diff options
Diffstat (limited to 'stdio/fgets.c')
-rw-r--r-- | stdio/fgets.c | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/stdio/fgets.c b/stdio/fgets.c deleted file mode 100644 index fbf5973a71..0000000000 --- a/stdio/fgets.c +++ /dev/null @@ -1,125 +0,0 @@ -/* Copyright (C) 1991, 92, 95, 96, 97, 98 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 <errno.h> -#include <stdio.h> -#include <string.h> - -/* Reads characters from STREAM into S, until either a newline character - is read, N - 1 characters have been read, or EOF is seen. Returns - the newline, unlike gets. Finishes by appending a null character and - returning S. If EOF is seen before any characters have been written - to S, the function returns NULL without appending the null character. - If there is a file error, always return NULL. */ -char * -fgets (s, n, stream) - char *s; - int n; - FILE *stream; -{ - register char *p = s; - - if (!__validfp (stream) || s == NULL || n <= 0) - { - __set_errno (EINVAL); - return NULL; - } - - if (ferror (stream)) - return NULL; - - if (stream->__buffer == NULL && stream->__userbuf) - { - /* Unbuffered stream. Not much optimization to do. */ - register int c = 0; - while (--n > 0 && (c = getc (stream)) != EOF) - if ((*p++ = c) == '\n') - break; - if (c == EOF && (p == s || ferror (stream))) - return NULL; - *p = '\0'; - return s; - } - - /* Leave space for the null. */ - --n; - - if (n > 0 && - (!stream->__seen || stream->__buffer == NULL || stream->__pushed_back)) - { - /* Do one with getc to allocate a buffer. */ - int c = getc (stream); - if (c == EOF) - return NULL; - *p++ = c; - if (c == '\n') - { - *p = '\0'; - return s; - } - else - --n; - } - - while (n > 0) - { - size_t i; - char *found; - - i = stream->__get_limit - stream->__bufp; - if (i == 0) - { - /* Refill the buffer. */ - int c = __fillbf (stream); - if (c == EOF) - break; - *p++ = c; - --n; - if (c == '\n') - { - *p = '\0'; - return s; - } - i = stream->__get_limit - stream->__bufp; - } - - if (i > (size_t) n) - i = n; - - found = (char *) __memccpy ((void *) p, stream->__bufp, '\n', i); - - if (found != NULL) - { - stream->__bufp += found - p; - p = found; - break; - } - - stream->__bufp += i; - n -= i; - p += i; - } - - if (p == s) - return NULL; - - *p = '\0'; - return ferror (stream) ? NULL : s; -} - -weak_alias (fgets, fgets_unlocked) |