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_xchar.c,v 10.10 2001/06/25 15:19:36 skimo Exp $"; 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 /* 28 * v_xchar -- [buffer] [count]x 29 * Deletes the character(s) on which the cursor sits. 30 * 31 * PUBLIC: int v_xchar(SCR *, VICMD *); 32 */ 33 int 34 v_xchar(SCR *sp, VICMD *vp) 35 { 36 size_t len; 37 int isempty; 38 39 if (db_eget(sp, vp->m_start.lno, NULL, &len, &isempty)) { 40 if (isempty) 41 goto nodel; 42 return (1); 43 } 44 if (len == 0) { 45 nodel: msgq(sp, M_BERR, "206|No characters to delete"); 46 return (1); 47 } 48 49 /* 50 * Delete from the cursor toward the end of line, w/o moving the 51 * cursor. 52 * 53 * !!! 54 * Note, "2x" at EOL isn't the same as "xx" because the left movement 55 * of the cursor as part of the 'x' command isn't taken into account. 56 * Historically correct. 57 */ 58 if (F_ISSET(vp, VC_C1SET)) 59 vp->m_stop.cno += vp->count - 1; 60 if (vp->m_stop.cno >= len - 1) { 61 vp->m_stop.cno = len - 1; 62 vp->m_final.cno = vp->m_start.cno ? vp->m_start.cno - 1 : 0; 63 } else 64 vp->m_final.cno = vp->m_start.cno; 65 66 if (cut(sp, 67 F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL, 68 &vp->m_start, &vp->m_stop, 0)) 69 return (1); 70 return (del(sp, &vp->m_start, &vp->m_stop, 0)); 71 } 72 73 /* 74 * v_Xchar -- [buffer] [count]X 75 * Deletes the character(s) immediately before the current cursor 76 * position. 77 * 78 * PUBLIC: int v_Xchar(SCR *, VICMD *); 79 */ 80 int 81 v_Xchar(SCR *sp, VICMD *vp) 82 { 83 u_long cnt; 84 85 if (vp->m_start.cno == 0) { 86 v_sol(sp); 87 return (1); 88 } 89 90 cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1; 91 if (cnt >= vp->m_start.cno) 92 vp->m_start.cno = 0; 93 else 94 vp->m_start.cno -= cnt; 95 --vp->m_stop.cno; 96 vp->m_final.cno = vp->m_start.cno; 97 98 if (cut(sp, 99 F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL, 100 &vp->m_start, &vp->m_stop, 0)) 101 return (1); 102 return (del(sp, &vp->m_start, &vp->m_stop, 0)); 103 } 104