ex_delete.c revision 281373 
1/*-
2 * Copyright (c) 1992, 1993, 1994
3 *	The Regents of the University of California.  All rights reserved.
4 * Copyright (c) 1992, 1993, 1994, 1995, 1996
5 *	Keith Bostic.  All rights reserved.
6 *
7 * See the LICENSE file for redistribution information.
8 */
9
10#include "config.h"
11
12#ifndef lint
13static const char sccsid[] = "$Id: ex_delete.c,v 10.11 2001/06/25 15:19:15 skimo Exp $";
14#endif /* not lint */
15
16#include <sys/types.h>
17#include <sys/queue.h>
18#include <sys/time.h>
19
20#include <bitstring.h>
21#include <limits.h>
22#include <stdio.h>
23
24#include "../common/common.h"
25
26/*
27 * ex_delete: [line [,line]] d[elete] [buffer] [count] [flags]
28 *
29 *	Delete lines from the file.
30 *
31 * PUBLIC: int ex_delete(SCR *, EXCMD *);
32 */
33int
34ex_delete(SCR *sp, EXCMD *cmdp)
35{
36	recno_t lno;
37
38	NEEDFILE(sp, cmdp);
39
40	/*
41	 * !!!
42	 * Historically, lines deleted in ex were not placed in the numeric
43	 * buffers.  We follow historic practice so that we don't overwrite
44	 * vi buffers accidentally.
45	 */
46	if (cut(sp,
47	    FL_ISSET(cmdp->iflags, E_C_BUFFER) ? &cmdp->buffer : NULL,
48	    &cmdp->addr1, &cmdp->addr2, CUT_LINEMODE))
49		return (1);
50
51	/* Delete the lines. */
52	if (del(sp, &cmdp->addr1, &cmdp->addr2, 1))
53		return (1);
54
55	/* Set the cursor to the line after the last line deleted. */
56	sp->lno = cmdp->addr1.lno;
57
58	/* Or the last line in the file if deleted to the end of the file. */
59	if (db_last(sp, &lno))
60		return (1);
61	if (sp->lno > lno)
62		sp->lno = lno;
63	return (0);
64}
65