ex_delete.c revision 1.7 
1/*	$OpenBSD: ex_delete.c,v 1.7 2014/11/12 04:28:41 bentley Exp $	*/
2
3/*-
4 * Copyright (c) 1992, 1993, 1994
5 *	The Regents of the University of California.  All rights reserved.
6 * Copyright (c) 1992, 1993, 1994, 1995, 1996
7 *	Keith Bostic.  All rights reserved.
8 *
9 * See the LICENSE file for redistribution information.
10 */
11
12#include "config.h"
13
14#include <sys/types.h>
15#include <sys/queue.h>
16
17#include <bitstring.h>
18#include <limits.h>
19#include <stdio.h>
20
21#include "../common/common.h"
22
23/*
24 * ex_delete: [line [,line]] d[elete] [buffer] [count] [flags]
25 *
26 *	Delete lines from the file.
27 *
28 * PUBLIC: int ex_delete(SCR *, EXCMD *);
29 */
30int
31ex_delete(SCR *sp, EXCMD *cmdp)
32{
33	recno_t lno;
34
35	NEEDFILE(sp, cmdp);
36
37	/*
38	 * !!!
39	 * Historically, lines deleted in ex were not placed in the numeric
40	 * buffers.  We follow historic practice so that we don't overwrite
41	 * vi buffers accidentally.
42	 */
43	if (cut(sp,
44	    FL_ISSET(cmdp->iflags, E_C_BUFFER) ? &cmdp->buffer : NULL,
45	    &cmdp->addr1, &cmdp->addr2, CUT_LINEMODE))
46		return (1);
47
48	/* Delete the lines. */
49	if (del(sp, &cmdp->addr1, &cmdp->addr2, 1))
50		return (1);
51
52	/* Set the cursor to the line after the last line deleted. */
53	sp->lno = cmdp->addr1.lno;
54
55	/* Or the last line in the file if deleted to the end of the file. */
56	if (db_last(sp, &lno))
57		return (1);
58	if (sp->lno > lno)
59		sp->lno = lno;
60	return (0);
61}
62