vi/v_yank.c

   1 /*-
   2  * Copyright (c) 1992, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * %sccs.include.redist.c%
   6  */
   7
   8 #ifndef lint
   9 static char sccsid[] = "$Id: v_yank.c,v 8.11 1994/01/09 14:21:17 bostic Exp $ (Berkeley) $Date: 1994/01/09 14:21:17 $";
  10 #endif /* not lint */
  11
  12 #include <sys/types.h>
  13
  14 #include "vi.h"
  15 #include "vcmd.h"
  16
  17 /*
  18  * v_Yank --    [buffer][count]Y
  19  *      Yank lines of text into a cut buffer.
  20  */
  21 int
  22 v_Yank(sp, ep, vp, fm, tm, rp)
  23         SCR *sp;
  24         EXF *ep;
  25         VICMDARG *vp;
  26         MARK *fm, *tm, *rp;
  27 {
  28         if (file_gline(sp, ep, tm->lno, NULL) == NULL) {
  29                 v_eof(sp, ep, fm);
  30                 return (1);
  31         }
  32         if (cut(sp, ep, NULL, F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL,
  33             fm, tm, CUT_LINEMODE))
  34                 return (1);
  35
  36         sp->rptlines[L_YANKED] += (tm->lno - fm->lno) + 1;
  37         return (0);
  38 }
  39
  40 /*
  41  * v_yank --    [buffer][count]y[count][motion]
  42  *      Yank text (or lines of text) into a cut buffer.
  43  */
  44 int
  45 v_yank(sp, ep, vp, fm, tm, rp)
  46         SCR *sp;
  47         EXF *ep;
  48         VICMDARG *vp;
  49         MARK *fm, *tm, *rp;
  50 {
  51         if (F_ISSET(vp, VC_LMODE)) {
  52                 if (file_gline(sp, ep, tm->lno, NULL) == NULL) {
  53                         v_eof(sp, ep, fm);
  54                         return (1);
  55                 }
  56                 if (cut(sp, ep,
  57                     NULL, F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL,
  58                     fm, tm, CUT_LINEMODE))
  59                         return (1);
  60         } else if (cut(sp, ep,
  61             NULL, F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL, fm, tm, 0))
  62                 return (1);
  63
  64         /*
  65          * !!!
  66          * Historic vi moved the cursor to the from MARK if it was before the
  67          * current cursor.  This makes no sense.  For example, "yj" moves the
  68          * cursor but "yk" does not.  Unfortunately, it's too late to change
  69          * this now.  Matching the historic semantics isn't easy.  The line
  70          * number was always changed and column movement was usually relative.
  71          * However, "y'a" moved the cursor to the first non-blank of the line
  72          * marked by a, while "y`a" moved the cursor to the line and column
  73          * marked by a.
  74          */
  75         if (F_ISSET(vp, VC_REVMOVE)) {
  76                 rp->lno = fm->lno;
  77                 if (vp->mkp == &vikeys['\'']) {
  78                         rp->cno = 0;
  79                         (void)nonblank(sp, ep, rp->lno, &rp->cno);
  80                 } else if (vp->mkp == &vikeys['`'])
  81                         rp->cno = fm->cno;
  82                 else
  83                         rp->cno = sp->s_relative(sp, ep, rp->lno);
  84         }
  85
  86         sp->rptlines[L_YANKED] += (tm->lno - fm->lno) + 1;
  87         return (0);
  88 }