1/* $NetBSD$ */ 2 3/*- 4 * Copyright (c) 1992, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * Copyright (c) 1992, 1993, 1994, 1995, 1996 7 * Keith Bostic. All rights reserved. 8 * 9 * See the LICENSE file for redistribution information. 10 */ 11 12#include "config.h" 13 14#ifndef lint 15static const char sccsid[] = "Id: v_right.c,v 10.8 2001/06/25 15:19:34 skimo Exp (Berkeley) Date: 2001/06/25 15:19:34"; 16#endif /* not lint */ 17 18#include <sys/types.h> 19#include <sys/queue.h> 20#include <sys/time.h> 21 22#include <bitstring.h> 23#include <limits.h> 24#include <stdio.h> 25 26#include "../common/common.h" 27#include "vi.h" 28 29/* 30 * v_right -- [count]' ', [count]l 31 * Move right by columns. 32 * 33 * PUBLIC: int v_right __P((SCR *, VICMD *)); 34 */ 35int 36v_right(SCR *sp, VICMD *vp) 37{ 38 size_t len; 39 int isempty; 40 41 if (db_eget(sp, vp->m_start.lno, NULL, &len, &isempty)) { 42 if (isempty) 43 goto eol; 44 return (1); 45 } 46 47 /* It's always illegal to move right on empty lines. */ 48 if (len == 0) { 49eol: v_eol(sp, NULL); 50 return (1); 51 } 52 53 /* 54 * Non-motion commands move to the end of the range. Delete and 55 * yank stay at the start. Ignore others. Adjust the end of the 56 * range for motion commands. 57 * 58 * !!! 59 * Historically, "[cdsy]l" worked at the end of a line. Also, 60 * EOL is a count sink. 61 */ 62 vp->m_stop.cno = vp->m_start.cno + 63 (F_ISSET(vp, VC_C1SET) ? vp->count : 1); 64 if (vp->m_start.cno == len - 1 && !ISMOTION(vp)) { 65 v_eol(sp, NULL); 66 return (1); 67 } 68 if (vp->m_stop.cno >= len) { 69 vp->m_stop.cno = len - 1; 70 vp->m_final = ISMOTION(vp) ? vp->m_start : vp->m_stop; 71 } else if (ISMOTION(vp)) { 72 --vp->m_stop.cno; 73 vp->m_final = vp->m_start; 74 } else 75 vp->m_final = vp->m_stop; 76 return (0); 77} 78 79/* 80 * v_dollar -- [count]$ 81 * Move to the last column. 82 * 83 * PUBLIC: int v_dollar __P((SCR *, VICMD *)); 84 */ 85int 86v_dollar(SCR *sp, VICMD *vp) 87{ 88 size_t len; 89 int isempty; 90 91 /* 92 * !!! 93 * A count moves down count - 1 rows, so, "3$" is the same as "2j$". 94 */ 95 if ((F_ISSET(vp, VC_C1SET) ? vp->count : 1) != 1) { 96 /* 97 * !!! 98 * Historically, if the $ is a motion, and deleting from 99 * at or before the first non-blank of the line, it's a 100 * line motion, and the line motion flag is set. 101 */ 102 vp->m_stop.cno = 0; 103 if (nonblank(sp, vp->m_start.lno, &vp->m_stop.cno)) 104 return (1); 105 if (ISMOTION(vp) && vp->m_start.cno <= vp->m_stop.cno) 106 F_SET(vp, VM_LMODE); 107 108 --vp->count; 109 if (v_down(sp, vp)) 110 return (1); 111 } 112 113 /* 114 * !!! 115 * Historically, it was illegal to use $ as a motion command on 116 * an empty line. Unfortunately, even though C was historically 117 * aliased to c$, it (and not c$) was special cased to work on 118 * empty lines. Since we alias C to c$ too, we have a problem. 119 * To fix it, we let c$ go through, on the assumption that it's 120 * not a problem for it to work. 121 */ 122 if (db_eget(sp, vp->m_stop.lno, NULL, &len, &isempty)) { 123 if (!isempty) 124 return (1); 125 len = 0; 126 } 127 128 if (len == 0) { 129 if (ISMOTION(vp) && !ISCMD(vp->rkp, 'c')) { 130 v_eol(sp, NULL); 131 return (1); 132 } 133 return (0); 134 } 135 136 /* 137 * Non-motion commands move to the end of the range. Delete 138 * and yank stay at the start. Ignore others. 139 */ 140 vp->m_stop.cno = len ? len - 1 : 0; 141 vp->m_final = ISMOTION(vp) ? vp->m_start : vp->m_stop; 142 return (0); 143} 144