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
13 static 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 __P((SCR *, EXCMD *));
32 */
33 int
ex_delete(SCR * sp,EXCMD * cmdp)34 ex_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