81 lines
2.8 KiB
C
81 lines
2.8 KiB
C
/* $NetBSD: twiddle.c,v 1.2 1999/02/22 07:53:52 simonb Exp $ */
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/*-
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* Copyright (c) 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)printf.c 8.1 (Berkeley) 6/11/93
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*/
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/*
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* Scaled down version of printf(3).
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*
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* One additional format:
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*
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* The format %b is supported to decode error registers.
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* Its usage is:
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*
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* printf("reg=%b\n", regval, "<base><arg>*");
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*
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* where <base> is the output base expressed as a control character, e.g.
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* \10 gives octal; \20 gives hex. Each arg is a sequence of characters,
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* the first of which gives the bit number to be inspected (origin 1), and
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* the next characters (up to a control character, i.e. a character <= 32),
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* give the name of the register. Thus:
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*
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* printf("reg=%b\n", 3, "\10\2BITTWO\1BITONE\n");
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*
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* would produce output:
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*
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* reg=3<BITTWO,BITONE>
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*/
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#include "stand.h"
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#define TWIDDLE_CHARS "|/-\\"
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void
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twiddle()
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{
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static int pos;
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#ifdef SA_NOPUTCHAR
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printf("%c\b", TWIDDLE_CHARS[pos++ & 3]);
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#else
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putchar(TWIDDLE_CHARS[pos++ & 3]);
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putchar('\b');
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#endif
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}
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