diff options
Diffstat (limited to 'libc/stdio/wbuf.c')
| -rw-r--r-- | libc/stdio/wbuf.c | 84 |
1 files changed, 0 insertions, 84 deletions
diff --git a/libc/stdio/wbuf.c b/libc/stdio/wbuf.c deleted file mode 100644 index c757799..0000000 --- a/libc/stdio/wbuf.c +++ /dev/null @@ -1,84 +0,0 @@ -/* $OpenBSD: wbuf.c,v 1.9 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 <errno.h> -#include "local.h" - -/* - * Write the given character into the (probably full) buffer for - * the given file. Flush the buffer out if it is or becomes full, - * or if c=='\n' and the file is line buffered. - */ -int -__swbuf(int c, FILE *fp) -{ - int n; - - _SET_ORIENTATION(fp, -1); - /* - * In case we cannot write, or longjmp takes us out early, - * make sure _w is 0 (if fully- or un-buffered) or -_bf._size - * (if line buffered) so that we will get called again. - * If we did not do this, a sufficient number of putc() - * calls might wrap _w from negative to positive. - */ - fp->_w = fp->_lbfsize; - if (cantwrite(fp)) { - errno = EBADF; - return (EOF); - } - c = (unsigned char)c; - - /* - * If it is completely full, flush it out. Then, in any case, - * stuff c into the buffer. If this causes the buffer to fill - * completely, or if c is '\n' and the file is line buffered, - * flush it (perhaps a second time). The second flush will always - * happen on unbuffered streams, where _bf._size==1; fflush() - * guarantees that putc() will always call wbuf() by setting _w - * to 0, so we need not do anything else. - */ - n = fp->_p - fp->_bf._base; - if (n >= fp->_bf._size) { - if (fflush(fp)) - return (EOF); - n = 0; - } - fp->_w--; - *fp->_p++ = c; - if (++n == fp->_bf._size || (fp->_flags & __SLBF && c == '\n')) - if (fflush(fp)) - return (EOF); - return (c); -} |