aboutsummaryrefslogtreecommitdiff
path: root/stdio/fgets.c
diff options
context:
space:
mode:
Diffstat (limited to 'stdio/fgets.c')
-rw-r--r--stdio/fgets.c125
1 files changed, 0 insertions, 125 deletions
diff --git a/stdio/fgets.c b/stdio/fgets.c
deleted file mode 100644
index fbf5973..0000000
--- 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)