diff options
Diffstat (limited to 'libc/stdio/fgets.c')
-rw-r--r-- | libc/stdio/fgets.c | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/libc/stdio/fgets.c b/libc/stdio/fgets.c deleted file mode 100644 index 99bdac9..0000000 --- a/libc/stdio/fgets.c +++ /dev/null @@ -1,97 +0,0 @@ -/* $OpenBSD: fgets.c,v 1.10 2005/08/08 08:05:36 espie Exp $ */ -/*- - * 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. 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> -#include "local.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. - * Do not return NULL if n == 1. - */ -char * -fgets(char *buf, int n, FILE *fp) -{ - size_t len; - char *s; - unsigned char *p, *t; - - if (n <= 0) /* sanity check */ - return (NULL); - - _SET_ORIENTATION(fp, -1); - s = buf; - n--; /* leave space for NUL */ - while (n != 0) { - /* - * If the buffer is empty, refill it. - */ - if (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 ((int)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); -} |