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 #include <sys/types.h>
13 #include <sys/queue.h>
14 #include <sys/time.h>
15
16 #include <bitstring.h>
17 #include <limits.h>
18 #include <stdio.h>
19
20 #include "../common/common.h"
21
22 /*
23 * ex_delete: [line [,line]] d[elete] [buffer] [count] [flags]
24 *
25 * Delete lines from the file.
26 *
27 * PUBLIC: int ex_delete(SCR *, EXCMD *);
28 */
29 int
ex_delete(SCR * sp,EXCMD * cmdp)30 ex_delete(SCR *sp, EXCMD *cmdp)
31 {
32 recno_t lno;
33
34 NEEDFILE(sp, cmdp);
35
36 /*
37 * !!!
38 * Historically, lines deleted in ex were not placed in the numeric
39 * buffers. We follow historic practice so that we don't overwrite
40 * vi buffers accidentally.
41 */
42 if (cut(sp,
43 FL_ISSET(cmdp->iflags, E_C_BUFFER) ? &cmdp->buffer : NULL,
44 &cmdp->addr1, &cmdp->addr2, CUT_LINEMODE))
45 return (1);
46
47 /* Delete the lines. */
48 if (del(sp, &cmdp->addr1, &cmdp->addr2, 1))
49 return (1);
50
51 /* Set the cursor to the line after the last line deleted. */
52 sp->lno = cmdp->addr1.lno;
53
54 /* Or the last line in the file if deleted to the end of the file. */
55 if (db_last(sp, &lno))
56 return (1);
57 if (sp->lno > lno)
58 sp->lno = lno;
59 return (0);
60 }
61