1 /* $OpenBSD: v_xchar.c,v 1.7 2014/11/12 04:28:41 bentley Exp $ */ 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 #include <sys/types.h> 15 #include <sys/queue.h> 16 #include <sys/time.h> 17 18 #include <bitstring.h> 19 #include <limits.h> 20 #include <stdio.h> 21 22 #include "../common/common.h" 23 #include "vi.h" 24 25 /* 26 * v_xchar -- [buffer] [count]x 27 * Deletes the character(s) on which the cursor sits. 28 * 29 * PUBLIC: int v_xchar(SCR *, VICMD *); 30 */ 31 int 32 v_xchar(SCR *sp, VICMD *vp) 33 { 34 size_t len; 35 int isempty; 36 37 if (db_eget(sp, vp->m_start.lno, NULL, &len, &isempty)) { 38 if (isempty) 39 goto nodel; 40 return (1); 41 } 42 if (len == 0) { 43 nodel: msgq(sp, M_BERR, "206|No characters to delete"); 44 return (1); 45 } 46 47 /* 48 * Delete from the cursor toward the end of line, w/o moving the 49 * cursor. 50 * 51 * !!! 52 * Note, "2x" at EOL isn't the same as "xx" because the left movement 53 * of the cursor as part of the 'x' command isn't taken into account. 54 * Historically correct. 55 */ 56 if (F_ISSET(vp, VC_C1SET)) 57 vp->m_stop.cno += vp->count - 1; 58 if (vp->m_stop.cno >= len - 1) { 59 vp->m_stop.cno = len - 1; 60 vp->m_final.cno = vp->m_start.cno ? vp->m_start.cno - 1 : 0; 61 } else 62 vp->m_final.cno = vp->m_start.cno; 63 64 if (cut(sp, 65 F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL, 66 &vp->m_start, &vp->m_stop, 0)) 67 return (1); 68 return (del(sp, &vp->m_start, &vp->m_stop, 0)); 69 } 70 71 /* 72 * v_Xchar -- [buffer] [count]X 73 * Deletes the character(s) immediately before the current cursor 74 * position. 75 * 76 * PUBLIC: int v_Xchar(SCR *, VICMD *); 77 */ 78 int 79 v_Xchar(SCR *sp, VICMD *vp) 80 { 81 u_long cnt; 82 83 if (vp->m_start.cno == 0) { 84 v_sol(sp); 85 return (1); 86 } 87 88 cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1; 89 if (cnt >= vp->m_start.cno) 90 vp->m_start.cno = 0; 91 else 92 vp->m_start.cno -= cnt; 93 --vp->m_stop.cno; 94 vp->m_final.cno = vp->m_start.cno; 95 96 if (cut(sp, 97 F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL, 98 &vp->m_start, &vp->m_stop, 0)) 99 return (1); 100 return (del(sp, &vp->m_start, &vp->m_stop, 0)); 101 } 102