/* * The authors of this software are Rob Pike and Ken Thompson. *              Copyright (c) 2002 by Lucent Technologies. * Permission to use, copy, modify, and distribute this software for any * purpose without fee is hereby granted, provided that this entire notice * is included in all copies of any software which is or includes a copy * or modification of this software and in all copies of the supporting * documentation for such software. * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE ANY * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE. */#include "lib9.h"#include "fmtdef.h" /* * generic routine for flushing a formatting buffer * to a file descriptor */int_fmtFdFlush(Fmt *f){	int n; 	n = (char*)f->to - (char*)f->start;	if(n && write((int)f->farg, f->start, n) != n)		return 0;	f->to = f->start;	return 1;} intvfprint(int fd, char *fmt, va_list args){	Fmt f;	char buf[256];	int n; 	fmtfdinit(&f, fd, buf, sizeof(buf));	va_copy(f.args, args);	n = dofmt(&f, fmt);	va_end(f.args);	if(n > 0 && _fmtFdFlush(&f) == 0)		return -1;	return n;}