60 lines
1.3 KiB
C
60 lines
1.3 KiB
C
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/*-
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* Copyright (c) 1992, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 1992, 1993, 1994, 1995, 1996
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* Keith Bostic. All rights reserved.
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*
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* See the LICENSE file for redistribution information.
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*/
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#include "config.h"
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#ifndef lint
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static const char sccsid[] = "@(#)ex_equal.c 10.10 (Berkeley) 3/6/96";
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/queue.h>
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#include <bitstring.h>
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#include <limits.h>
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#include <stdio.h>
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#include "../common/common.h"
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/*
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* ex_equal -- :address =
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*
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* PUBLIC: int ex_equal __P((SCR *, EXCMD *));
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*/
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int
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ex_equal(sp, cmdp)
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SCR *sp;
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EXCMD *cmdp;
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{
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recno_t lno;
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NEEDFILE(sp, cmdp);
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/*
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* Print out the line number matching the specified address,
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* or the number of the last line in the file if no address
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* specified.
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*
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* !!!
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* Historically, ":0=" displayed 0, and ":=" or ":1=" in an
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* empty file displayed 1. Until somebody complains loudly,
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* we're going to do it right. The tables in excmd.c permit
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* lno to get away with any address from 0 to the end of the
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* file, which, in an empty file, is 0.
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*/
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if (F_ISSET(cmdp, E_ADDR_DEF)) {
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if (db_last(sp, &lno))
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return (1);
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} else
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lno = cmdp->addr1.lno;
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(void)ex_printf(sp, "%ld\n", lno);
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return (0);
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}
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