ex_delete.c revision 1.1 
1/*-
2 * Copyright (c) 1992, 1993, 1994
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35static char sccsid[] = "@(#)ex_delete.c	8.14 (Berkeley) 8/17/94";
36#endif /* not lint */
37
38#include <sys/types.h>
39#include <sys/queue.h>
40#include <sys/time.h>
41
42#include <bitstring.h>
43#include <limits.h>
44#include <signal.h>
45#include <stdio.h>
46#include <termios.h>
47
48#include "compat.h"
49#include <db.h>
50#include <regex.h>
51
52#include "vi.h"
53#include "excmd.h"
54
55/*
56 * ex_delete: [line [,line]] d[elete] [buffer] [count] [flags]
57 *
58 *	Delete lines from the file.
59 */
60int
61ex_delete(sp, ep, cmdp)
62	SCR *sp;
63	EXF *ep;
64	EXCMDARG *cmdp;
65{
66	recno_t lno;
67
68	/*
69	 * !!!
70	 * Historically, lines deleted in ex were not placed in the numeric
71	 * buffers.  We follow historic practice so that we don't overwrite
72	 * vi buffers accidentally.
73	 */
74	if (cut(sp, ep,
75	    F_ISSET(cmdp, E_BUFFER) ? &cmdp->buffer : NULL,
76	    &cmdp->addr1, &cmdp->addr2, CUT_LINEMODE))
77		return (1);
78
79	/* Delete the lines. */
80	if (delete(sp, ep, &cmdp->addr1, &cmdp->addr2, 1))
81		return (1);
82
83	/* Set the cursor to the line after the last line deleted. */
84	sp->lno = cmdp->addr1.lno;
85
86	/* Or the last line in the file if deleted to the end of the file. */
87	if (file_lline(sp, ep, &lno))
88		return (1);
89	if (sp->lno > lno)
90		sp->lno = lno;
91	return (0);
92}
93