File: fmtfdflush.c

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/* Copyright (c) 2002-2006 Lucent Technologies; see LICENSE */
#include <stdarg.h>
#include <unistd.h>
#include "plan9.h"
#include "fmt.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((uintptr)f->farg, f->start, n) != n)
		return 0;
	f->to = f->start;
	return 1;
}