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b8ba871bd9
files, curses, db, regex etc that we already have). The other glue will follow shortly. Obtained from: Keith Bostic <bostic@bostic.com>
199 lines
4.4 KiB
C
199 lines
4.4 KiB
C
/*-
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* Copyright (c) 1992, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 1992, 1993, 1994, 1995, 1996
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* Keith Bostic. All rights reserved.
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*
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* See the LICENSE file for redistribution information.
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*/
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#include "config.h"
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#ifndef lint
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static const char sccsid[] = "@(#)ex_move.c 10.10 (Berkeley) 9/15/96";
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/queue.h>
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#include <bitstring.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "../common/common.h"
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/*
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* ex_copy -- :[line [,line]] co[py] line [flags]
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* Copy selected lines.
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*
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* PUBLIC: int ex_copy __P((SCR *, EXCMD *));
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*/
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int
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ex_copy(sp, cmdp)
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SCR *sp;
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EXCMD *cmdp;
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{
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CB cb;
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MARK fm1, fm2, m, tm;
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recno_t cnt;
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int rval;
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rval = 0;
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NEEDFILE(sp, cmdp);
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/*
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* It's possible to copy things into the area that's being
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* copied, e.g. "2,5copy3" is legitimate. Save the text to
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* a cut buffer.
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*/
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fm1 = cmdp->addr1;
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fm2 = cmdp->addr2;
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memset(&cb, 0, sizeof(cb));
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CIRCLEQ_INIT(&cb.textq);
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for (cnt = fm1.lno; cnt <= fm2.lno; ++cnt)
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if (cut_line(sp, cnt, 0, 0, &cb)) {
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rval = 1;
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goto err;
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}
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cb.flags |= CB_LMODE;
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/* Put the text into place. */
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tm.lno = cmdp->lineno;
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tm.cno = 0;
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if (put(sp, &cb, NULL, &tm, &m, 1))
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rval = 1;
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else {
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/*
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* Copy puts the cursor on the last line copied. The cursor
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* returned by the put routine is the first line put, not the
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* last, because that's the historic semantic of vi.
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*/
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cnt = (fm2.lno - fm1.lno) + 1;
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sp->lno = m.lno + (cnt - 1);
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sp->cno = 0;
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}
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err: text_lfree(&cb.textq);
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return (rval);
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}
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/*
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* ex_move -- :[line [,line]] mo[ve] line
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* Move selected lines.
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*
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* PUBLIC: int ex_move __P((SCR *, EXCMD *));
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*/
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int
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ex_move(sp, cmdp)
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SCR *sp;
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EXCMD *cmdp;
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{
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LMARK *lmp;
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MARK fm1, fm2;
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recno_t cnt, diff, fl, tl, mfl, mtl;
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size_t blen, len;
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int mark_reset;
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char *bp, *p;
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NEEDFILE(sp, cmdp);
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/*
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* It's not possible to move things into the area that's being
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* moved.
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*/
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fm1 = cmdp->addr1;
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fm2 = cmdp->addr2;
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if (cmdp->lineno >= fm1.lno && cmdp->lineno <= fm2.lno) {
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msgq(sp, M_ERR, "139|Destination line is inside move range");
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return (1);
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}
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/*
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* Log the positions of any marks in the to-be-deleted lines. This
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* has to work with the logging code. What happens is that we log
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* the old mark positions, make the changes, then log the new mark
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* positions. Then the marks end up in the right positions no matter
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* which way the log is traversed.
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*
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* XXX
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* Reset the MARK_USERSET flag so that the log can undo the mark.
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* This isn't very clean, and should probably be fixed.
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*/
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fl = fm1.lno;
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tl = cmdp->lineno;
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/* Log the old positions of the marks. */
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mark_reset = 0;
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for (lmp = sp->ep->marks.lh_first; lmp != NULL; lmp = lmp->q.le_next)
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if (lmp->name != ABSMARK1 &&
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lmp->lno >= fl && lmp->lno <= tl) {
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mark_reset = 1;
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F_CLR(lmp, MARK_USERSET);
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(void)log_mark(sp, lmp);
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}
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/* Get memory for the copy. */
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GET_SPACE_RET(sp, bp, blen, 256);
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/* Move the lines. */
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diff = (fm2.lno - fm1.lno) + 1;
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if (tl > fl) { /* Destination > source. */
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mfl = tl - diff;
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mtl = tl;
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for (cnt = diff; cnt--;) {
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if (db_get(sp, fl, DBG_FATAL, &p, &len))
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return (1);
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BINC_RET(sp, bp, blen, len);
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memcpy(bp, p, len);
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if (db_append(sp, 1, tl, bp, len))
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return (1);
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if (mark_reset)
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for (lmp = sp->ep->marks.lh_first;
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lmp != NULL; lmp = lmp->q.le_next)
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if (lmp->name != ABSMARK1 &&
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lmp->lno == fl)
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lmp->lno = tl + 1;
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if (db_delete(sp, fl))
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return (1);
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}
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} else { /* Destination < source. */
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mfl = tl;
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mtl = tl + diff;
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for (cnt = diff; cnt--;) {
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if (db_get(sp, fl, DBG_FATAL, &p, &len))
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return (1);
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BINC_RET(sp, bp, blen, len);
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memcpy(bp, p, len);
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if (db_append(sp, 1, tl++, bp, len))
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return (1);
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if (mark_reset)
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for (lmp = sp->ep->marks.lh_first;
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lmp != NULL; lmp = lmp->q.le_next)
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if (lmp->name != ABSMARK1 &&
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lmp->lno == fl)
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lmp->lno = tl;
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++fl;
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if (db_delete(sp, fl))
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return (1);
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}
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}
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FREE_SPACE(sp, bp, blen);
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sp->lno = tl; /* Last line moved. */
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sp->cno = 0;
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/* Log the new positions of the marks. */
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if (mark_reset)
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for (lmp = sp->ep->marks.lh_first;
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lmp != NULL; lmp = lmp->q.le_next)
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if (lmp->name != ABSMARK1 &&
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lmp->lno >= mfl && lmp->lno <= mtl)
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(void)log_mark(sp, lmp);
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sp->rptlines[L_MOVED] += diff;
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return (0);
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}
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