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 */
30 int
ex_copy(SCR * sp,EXCMD * cmdp)31 ex_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 }
72 err: 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 */
82 int
ex_move(SCR * sp,EXCMD * cmdp)83 ex_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