1/* $NetBSD: v_right.c,v 1.2 2013/11/22 15:52:06 christos Exp $ */ 2/*- 3 * Copyright (c) 1992, 1993, 1994 4 * The Regents of the University of California. All rights reserved. 5 * Copyright (c) 1992, 1993, 1994, 1995, 1996 6 * Keith Bostic. All rights reserved. 7 * 8 * See the LICENSE file for redistribution information. 9 */ 10 11#include "config.h" 12 13#include <sys/cdefs.h> 14#if 0 15#ifndef lint 16static 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 "; 17#endif /* not lint */ 18#else 19__RCSID("$NetBSD$"); 20#endif 21 22#include <sys/types.h> 23#include <sys/queue.h> 24#include <sys/time.h> 25 26#include <bitstring.h> 27#include <limits.h> 28#include <stdio.h> 29 30#include "../common/common.h" 31#include "vi.h" 32 33/* 34 * v_right -- [count]' ', [count]l 35 * Move right by columns. 36 * 37 * PUBLIC: int v_right __P((SCR *, VICMD *)); 38 */ 39int 40v_right(SCR *sp, VICMD *vp) 41{ 42 size_t len; 43 int isempty; 44 45 if (db_eget(sp, vp->m_start.lno, NULL, &len, &isempty)) { 46 if (isempty) 47 goto eol; 48 return (1); 49 } 50 51 /* It's always illegal to move right on empty lines. */ 52 if (len == 0) { 53eol: v_eol(sp, NULL); 54 return (1); 55 } 56 57 /* 58 * Non-motion commands move to the end of the range. Delete and 59 * yank stay at the start. Ignore others. Adjust the end of the 60 * range for motion commands. 61 * 62 * !!! 63 * Historically, "[cdsy]l" worked at the end of a line. Also, 64 * EOL is a count sink. 65 */ 66 vp->m_stop.cno = vp->m_start.cno + 67 (F_ISSET(vp, VC_C1SET) ? vp->count : 1); 68 if (vp->m_start.cno == len - 1 && !ISMOTION(vp)) { 69 v_eol(sp, NULL); 70 return (1); 71 } 72 if (vp->m_stop.cno >= len) { 73 vp->m_stop.cno = len - 1; 74 vp->m_final = ISMOTION(vp) ? vp->m_start : vp->m_stop; 75 } else if (ISMOTION(vp)) { 76 --vp->m_stop.cno; 77 vp->m_final = vp->m_start; 78 } else 79 vp->m_final = vp->m_stop; 80 return (0); 81} 82 83/* 84 * v_dollar -- [count]$ 85 * Move to the last column. 86 * 87 * PUBLIC: int v_dollar __P((SCR *, VICMD *)); 88 */ 89int 90v_dollar(SCR *sp, VICMD *vp) 91{ 92 size_t len; 93 int isempty; 94 95 /* 96 * !!! 97 * A count moves down count - 1 rows, so, "3$" is the same as "2j$". 98 */ 99 if ((F_ISSET(vp, VC_C1SET) ? vp->count : 1) != 1) { 100 /* 101 * !!! 102 * Historically, if the $ is a motion, and deleting from 103 * at or before the first non-blank of the line, it's a 104 * line motion, and the line motion flag is set. 105 */ 106 vp->m_stop.cno = 0; 107 if (nonblank(sp, vp->m_start.lno, &vp->m_stop.cno)) 108 return (1); 109 if (ISMOTION(vp) && vp->m_start.cno <= vp->m_stop.cno) 110 F_SET(vp, VM_LMODE); 111 112 --vp->count; 113 if (v_down(sp, vp)) 114 return (1); 115 } 116 117 /* 118 * !!! 119 * Historically, it was illegal to use $ as a motion command on 120 * an empty line. Unfortunately, even though C was historically 121 * aliased to c$, it (and not c$) was special cased to work on 122 * empty lines. Since we alias C to c$ too, we have a problem. 123 * To fix it, we let c$ go through, on the assumption that it's 124 * not a problem for it to work. 125 */ 126 if (db_eget(sp, vp->m_stop.lno, NULL, &len, &isempty)) { 127 if (!isempty) 128 return (1); 129 len = 0; 130 } 131 132 if (len == 0) { 133 if (ISMOTION(vp) && !ISCMD(vp->rkp, 'c')) { 134 v_eol(sp, NULL); 135 return (1); 136 } 137 return (0); 138 } 139 140 /* 141 * Non-motion commands move to the end of the range. Delete 142 * and yank stay at the start. Ignore others. 143 */ 144 vp->m_stop.cno = len ? len - 1 : 0; 145 vp->m_final = ISMOTION(vp) ? vp->m_start : vp->m_stop; 146 return (0); 147} 148