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 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 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