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/*
* Copyright (c) 1994-1999 The University of Utah and the Flux Group.
* All rights reserved.
*
* This file is part of the Flux OSKit. The OSKit is free software, also known
* as "open source;" you can redistribute it and/or modify it under the terms
* of the GNU General Public License (GPL), version 2, as published by the Free
* Software Foundation (FSF). To explore alternate licensing terms, contact
* the University of Utah at csl-dist@cs.utah.edu or +1-801-585-3271.
*
* The OSKit 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 GPL for more details. You should have
* received a copy of the GPL along with the OSKit; see the file COPYING. If
* not, write to the FSF, 59 Temple Place #330, Boston, MA 02111-1307, USA.
*/
/*
* Mach Operating System
* Copyright (c) 1993,1991,1990,1989 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
#include <stdio.h>
#include <stdarg.h>
#include <oskit/com/stream.h>
#include "doprnt.h"
/*
* This version of printf prints to a COM stream object.
*/
#define PRINTF_BUFMAX 128
struct printf_state {
oskit_stream_t *stream;
char buf[PRINTF_BUFMAX];
unsigned int index;
};
static void
flush(struct printf_state *state)
{
oskit_size_t n;
oskit_stream_write(state->stream, state->buf, state->index, &n);
state->index = 0;
}
static void
printf_char(arg, c)
char *arg;
int c;
{
struct printf_state *state = (struct printf_state *) arg;
state->buf[state->index++] = (unsigned char) c;
if (c == 0 || c == '\n' || state->index == PRINTF_BUFMAX)
flush(state);
}
int com_vprintf(oskit_stream_t *stream, const char *fmt, va_list args)
{
struct printf_state state;
state.stream = stream;
state.index = 0;
_doprnt(fmt, args, 0, (void (*)())printf_char, (char *) &state);
if (state.index != 0)
flush(&state);
/* _doprnt currently doesn't pass back error codes,
so just assume nothing bad happened. */
return 0;
}
int
com_printf(oskit_stream_t *stream, const char *fmt, ...)
{
va_list args;
int err;
va_start(args, fmt);
err = com_vprintf(stream, fmt, args);
va_end(args);
return err;
}
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