Libc-262.tar.gz

[apple/libc.git] / stdio.subproj / fgets.c

diff --git a/stdio.subproj/fgets.c b/stdio.subproj/fgets.c
deleted file mode 100644 (file)
index 45da44e..0000000
--- a/stdio.subproj/fgets.c
+++ /dev/null
@@ -1,122 +0,0 @@
-/*
- * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- * 
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- * 
- * @APPLE_LICENSE_HEADER_END@
- */
-/*
- * Copyright (c) 1990, 1993
- *     The Regents of the University of California.  All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Chris Torek.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *     This product includes software developed by the University of
- *     California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-
-#include <stdio.h>
-#include <string.h>
-
-/*
- * Read at most n-1 characters from the given file.
- * Stop when a newline has been read, or the count runs out.
- * Return first argument, or NULL if no characters were read.
- */
-char *
-fgets(buf, n, fp)
-       char *buf;
-       register size_t n;
-       register FILE *fp;
-{
-       register size_t len;
-       register char *s;
-       register unsigned char *p, *t;
-
-       if (n == 0)             /* sanity check */
-               return (NULL);
-
-       s = buf;
-       n--;                    /* leave space for NUL */
-       while (n != 0) {
-               /*
-                * If the buffer is empty, refill it.
-                */
-               if ((len = fp->_r) <= 0) {
-                       if (__srefill(fp)) {
-                               /* EOF/error: stop with partial or no line */
-                               if (s == buf)
-                                       return (NULL);
-                               break;
-                       }
-                       len = fp->_r;
-               }
-               p = fp->_p;
-
-               /*
-                * Scan through at most n bytes of the current buffer,
-                * looking for '\n'.  If found, copy up to and including
-                * newline, and stop.  Otherwise, copy entire chunk
-                * and loop.
-                */
-               if (len > n)
-                       len = n;
-               t = memchr((void *)p, '\n', len);
-               if (t != NULL) {
-                       len = ++t - p;
-                       fp->_r -= len;
-                       fp->_p = t;
-                       (void)memcpy((void *)s, (void *)p, len);
-                       s[len] = 0;
-                       return (buf);
-               }
-               fp->_r -= len;
-               fp->_p += len;
-               (void)memcpy((void *)s, (void *)p, len);
-               s += len;
-               n -= len;
-       }
-       *s = 0;
-       return (buf);
-}