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#include <stdlib.h>
20#include <string.h>
21
22#include "../common/common.h"
23
24/*
25 * ex_copy -- :[line [,line]] co[py] line [flags]
26 *	Copy selected lines.
27 *
28 * PUBLIC: int ex_copy(SCR *, EXCMD *);
29 */
30int
31ex_copy(SCR *sp, EXCMD *cmdp)
32{
33	CB cb = {{ 0 }};
34	MARK fm1, fm2, m, tm;
35	recno_t cnt;
36	int rval;
37
38	rval = 0;
39
40	NEEDFILE(sp, cmdp);
41
42	/*
43	 * It's possible to copy things into the area that's being
44	 * copied, e.g. "2,5copy3" is legitimate.  Save the text to
45	 * a cut buffer.
46	 */
47	fm1 = cmdp->addr1;
48	fm2 = cmdp->addr2;
49	TAILQ_INIT(cb.textq);
50	for (cnt = fm1.lno; cnt <= fm2.lno; ++cnt)
51		if (cut_line(sp, cnt, 0, ENTIRE_LINE, &cb)) {
52			rval = 1;
53			goto err;
54		}
55	cb.flags |= CB_LMODE;
56
57	/* Put the text into place. */
58	tm.lno = cmdp->lineno;
59	tm.cno = 0;
60	if (put(sp, &cb, NULL, &tm, &m, 1))
61		rval = 1;
62	else {
63		/*
64		 * Copy puts the cursor on the last line copied.  The cursor
65		 * returned by the put routine is the first line put, not the
66		 * last, because that's the historic semantic of vi.
67		 */
68		cnt = (fm2.lno - fm1.lno) + 1;
69		sp->lno = m.lno + (cnt - 1);
70		sp->cno = 0;
71	}
72err:	text_lfree(cb.textq);
73	return (rval);
74}
75
76/*
77 * ex_move -- :[line [,line]] mo[ve] line
78 *	Move selected lines.
79 *
80 * PUBLIC: int ex_move(SCR *, EXCMD *);
81 */
82int
83ex_move(SCR *sp, EXCMD *cmdp)
84{
85	LMARK *lmp;
86	MARK fm1, fm2;
87	recno_t cnt, diff, fl, tl, mfl, mtl;
88	size_t blen, len;
89	int mark_reset;
90	CHAR_T *bp;
91	CHAR_T *p;
92
93	NEEDFILE(sp, cmdp);
94
95	/*
96	 * It's not possible to move things into the area that's being
97	 * moved.
98	 */
99	fm1 = cmdp->addr1;
100	fm2 = cmdp->addr2;
101	if (cmdp->lineno >= fm1.lno && cmdp->lineno <= fm2.lno) {
102		msgq(sp, M_ERR, "139|Destination line is inside move range");
103		return (1);
104	}
105
106	/*
107	 * Log the positions of any marks in the to-be-deleted lines.  This
108	 * has to work with the logging code.  What happens is that we log
109	 * the old mark positions, make the changes, then log the new mark
110	 * positions.  Then the marks end up in the right positions no matter
111	 * which way the log is traversed.
112	 *
113	 * XXX
114	 * Reset the MARK_USERSET flag so that the log can undo the mark.
115	 * This isn't very clean, and should probably be fixed.
116	 */
117	fl = fm1.lno;
118	tl = cmdp->lineno;
119
120	/* Log the old positions of the marks. */
121	mark_reset = 0;
122	SLIST_FOREACH(lmp, sp->ep->marks, q)
123		if (lmp->name != ABSMARK1 &&
124		    lmp->lno >= fl && lmp->lno <= tl) {
125			mark_reset = 1;
126			F_CLR(lmp, MARK_USERSET);
127			(void)log_mark(sp, lmp);
128		}
129
130	/* Get memory for the copy. */
131	GET_SPACE_RETW(sp, bp, blen, 256);
132
133	/* Move the lines. */
134	diff = (fm2.lno - fm1.lno) + 1;
135	if (tl > fl) {				/* Destination > source. */
136		mfl = tl - diff;
137		mtl = tl;
138		for (cnt = diff; cnt--;) {
139			if (db_get(sp, fl, DBG_FATAL, &p, &len))
140				return (1);
141			BINC_RETW(sp, bp, blen, len);
142			MEMCPY(bp, p, len);
143			if (db_append(sp, 1, tl, bp, len))
144				return (1);
145			if (mark_reset)
146				SLIST_FOREACH(lmp, sp->ep->marks, q)
147					if (lmp->name != ABSMARK1 &&
148					    lmp->lno == fl)
149						lmp->lno = tl + 1;
150			if (db_delete(sp, fl))
151				return (1);
152		}
153	} else {				/* Destination < source. */
154		mfl = tl;
155		mtl = tl + diff;
156		for (cnt = diff; cnt--;) {
157			if (db_get(sp, fl, DBG_FATAL, &p, &len))
158				return (1);
159			BINC_RETW(sp, bp, blen, len);
160			MEMCPY(bp, p, len);
161			if (db_append(sp, 1, tl++, bp, len))
162				return (1);
163			if (mark_reset)
164				SLIST_FOREACH(lmp, sp->ep->marks, q)
165					if (lmp->name != ABSMARK1 &&
166					    lmp->lno == fl)
167						lmp->lno = tl;
168			++fl;
169			if (db_delete(sp, fl))
170				return (1);
171		}
172	}
173	FREE_SPACEW(sp, bp, blen);
174
175	sp->lno = tl;				/* Last line moved. */
176	sp->cno = 0;
177
178	/* Log the new positions of the marks. */
179	if (mark_reset)
180		SLIST_FOREACH(lmp, sp->ep->marks, q)
181			if (lmp->name != ABSMARK1 &&
182			    lmp->lno >= mfl && lmp->lno <= mtl)
183				(void)log_mark(sp, lmp);
184
185
186	sp->rptlines[L_MOVED] += diff;
187	return (0);
188}
189