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 */
30 int
ex_delete(SCR * sp,EXCMD * cmdp)31 ex_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