wsfe.c

<B>Digital的Unix操作系统VAX 4.2源码</B>

#ifndef lint
static char	*sccsid = " @(#)wsfe.c	4.1	(ULTRIX)	7/17/90";
#endif lint

/************************************************************************
 *									*
 *			Copyright (c) 1986 by				*
 *		Digital Equipment Corporation, Maynard, MA		*
 *			All rights reserved.				*
 *									*
 *   This software is furnished under a license and may be used and	*
 *   copied  only  in accordance with the terms of such license and	*
 *   with the  inclusion  of  the  above  copyright  notice.   This	*
 *   software  or  any  other copies thereof may not be provided or	*
 *   otherwise made available to any other person.  No title to and	*
 *   ownership of the software is hereby transferred.			*
 *									*
 *   This software is  derived  from  software  received  from  the	*
 *   University    of   California,   Berkeley,   and   from   Bell	*
 *   Laboratories.  Use, duplication, or disclosure is  subject  to	*
 *   restrictions  under  license  agreements  with  University  of	*
 *   California and with AT&T.						*
 *									*
 *   The information in this software is subject to change  without	*
 *   notice  and should not be construed as a commitment by Digital	*
 *   Equipment Corporation.						*
 *									*
 *   Digital assumes no responsibility for the use  or  reliability	*
 *   of its software on equipment which is not supplied by Digital.	*
 *									*
 ************************************************************************/

/************************************************************************
*
*			Modification History
*
*	David Metsky		10-Jan-86
*
* 001	Replaced old version with BSD 4.3 version as part of upgrade.
*
*	Based on:	wsfe.c		5.2		7/30/85
*
*************************************************************************/

/*
 * write sequential formatted external
 */

#include "fio.h"

LOCAL char wsfe[] = "write sfe";

extern int w_ed(),w_ned();
int x_putc(),pr_put(),x_wend(),x_wnew(),x_tab();
LOCAL ioflag new;

s_wsfe(a) cilist *a;	/*start*/
{	int n;
	reading = NO;
	sequential = YES;
	if(n=c_sfe(a,WRITE,SEQ,wsfe)) return(n);
	if(curunit->url) err(errflag,F_ERNOSIO,wsfe)
	if(!curunit->uwrt && ! nowwriting(curunit)) err(errflag, errno, wsfe)
	curunit->uend = NO;
	if (curunit->uprnt) putn = pr_put;
	else putn = x_putc;
	new = YES;
	doed= w_ed;
	doned= w_ned;
	doend = x_wend;
	dorevert = donewrec = x_wnew;
	dotab = x_tab;
	if(pars_f()) err(errflag,F_ERFMT,wsfe)
	fmt_bg();
	return(OK);
}

LOCAL
x_putc(c)
{
	if(c=='\n') recpos = reclen = cursor = 0;
	else recpos++;
	if (c) putc(c,cf);
	return(OK);
}

LOCAL
pr_put(c)
{
	if(c=='\n')
	{	new = YES;
		recpos = reclen = cursor = 0;
	}
	else if(new)
	{	new = NO;
		if(c=='0') c = '\n';
		else if(c=='1') c = '\f';
		else return(OK);
	}
	else recpos++;
	if (c) putc(c,cf);
	return(OK);
}

LOCAL
x_wnew()
{
	if(reclen>recpos) fseek(cf,(long)(reclen-recpos),1);
	return((*putn)('\n'));
}

LOCAL
x_wend(last) char last;
{
	if(reclen>recpos) fseek(cf,(long)(reclen-recpos),1);
	return((*putn)(last));
}

e_wsfe()
{	int n;
	n=en_fio();
	fmtbuf=NULL;
	return(n);
}