vi/v_put.c

   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 #ifndef lint
  13 static const char sccsid[] = "$Id: v_put.c,v 10.6 2001/06/25 15:19:34 skimo Exp $ (Berkeley) $Date: 2001/06/25 15:19:34 $";
  14 #endif /* not lint */
  15
  16 #include <sys/types.h>
  17 #include <sys/queue.h>
  18 #include <sys/time.h>
  19
  20 #include <bitstring.h>
  21 #include <limits.h>
  22 #include <stdio.h>
  23
  24 #include "../common/common.h"
  25 #include "vi.h"
  26
  27 static void     inc_buf __P((SCR *, VICMD *));
  28
  29 /*
  30  * v_Put -- [buffer]P
  31  *      Insert the contents of the buffer before the cursor.
  32  *
  33  * PUBLIC: int v_Put __P((SCR *, VICMD *));
  34  */
  35 int
  36 v_Put(SCR *sp, VICMD *vp)
  37 {
  38         u_long cnt;
  39
  40         if (F_ISSET(vp, VC_ISDOT))
  41                 inc_buf(sp, vp);
  42
  43         /*
  44          * !!!
  45          * Historic vi did not support a count with the 'p' and 'P'
  46          * commands.  It's useful, so we do.
  47          */
  48         for (cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1; cnt--;) {
  49                 if (put(sp, NULL,
  50                     F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL,
  51                     &vp->m_start, &vp->m_final, 0))
  52                         return (1);
  53                 vp->m_start = vp->m_final;
  54                 if (INTERRUPTED(sp))
  55                         return (1);
  56         }
  57         return (0);
  58 }
  59
  60 /*
  61  * v_put -- [buffer]p
  62  *      Insert the contents of the buffer after the cursor.
  63  *
  64  * PUBLIC: int v_put __P((SCR *, VICMD *));
  65  */
  66 int
  67 v_put(SCR *sp, VICMD *vp)
  68 {
  69         u_long cnt;
  70
  71         if (F_ISSET(vp, VC_ISDOT))
  72                 inc_buf(sp, vp);
  73
  74         /*
  75          * !!!
  76          * Historic vi did not support a count with the 'p' and 'P'
  77          * commands.  It's useful, so we do.
  78          */
  79         for (cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1; cnt--;) {
  80                 if (put(sp, NULL,
  81                     F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL,
  82                     &vp->m_start, &vp->m_final, 1))
  83                         return (1);
  84                 vp->m_start = vp->m_final;
  85                 if (INTERRUPTED(sp))
  86                         return (1);
  87         }
  88         return (0);
  89 }
  90
  91 /*
  92  * !!!
  93  * Historical whackadoo.  The dot command `puts' the numbered buffer
  94  * after the last one put.  For example, `"4p.' would put buffer #4
  95  * and buffer #5.  If the user continued to enter '.', the #9 buffer
  96  * would be repeatedly output.  This was not documented, and is a bit
  97  * tricky to reconstruct.  Historical versions of vi also dropped the
  98  * contents of the default buffer after each put, so after `"4p' the
  99  * default buffer would be empty.  This makes no sense to me, so we
 100  * don't bother.  Don't assume sequential order of numeric characters.
 101  *
 102  * And, if that weren't exciting enough, failed commands don't normally
 103  * set the dot command.  Well, boys and girls, an exception is that
 104  * the buffer increment gets done regardless of the success of the put.
 105  */
 106 static void
 107 inc_buf(SCR *sp, VICMD *vp)
 108 {
 109         CHAR_T v;
 110
 111         switch (vp->buffer) {
 112         case '1':
 113                 v = '2';
 114                 break;
 115         case '2':
 116                 v = '3';
 117                 break;
 118         case '3':
 119                 v = '4';
 120                 break;
 121         case '4':
 122                 v = '5';
 123                 break;
 124         case '5':
 125                 v = '6';
 126                 break;
 127         case '6':
 128                 v = '7';
 129                 break;
 130         case '7':
 131                 v = '8';
 132                 break;
 133         case '8':
 134                 v = '9';
 135                 break;
 136         default:
 137                 return;
 138         }
 139         VIP(sp)->sdot.buffer = vp->buffer = v;
 140 }