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[] = "@(#)v_xchar.c 10.9 (Berkeley) 10/23/96"; 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 __P((SCR *, VICMD *)); 32 */ 33 int 34 v_xchar(sp, vp) 35 SCR *sp; 36 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 nodel; 44 return (1); 45 } 46 if (len == 0) { 47 nodel: msgq(sp, M_BERR, "206|No characters to delete"); 48 return (1); 49 } 50 51 /* 52 * Delete from the cursor toward the end of line, w/o moving the 53 * cursor. 54 * 55 * !!! 56 * Note, "2x" at EOL isn't the same as "xx" because the left movement 57 * of the cursor as part of the 'x' command isn't taken into account. 58 * Historically correct. 59 */ 60 if (F_ISSET(vp, VC_C1SET)) 61 vp->m_stop.cno += vp->count - 1; 62 if (vp->m_stop.cno >= len - 1) { 63 vp->m_stop.cno = len - 1; 64 vp->m_final.cno = vp->m_start.cno ? vp->m_start.cno - 1 : 0; 65 } else 66 vp->m_final.cno = vp->m_start.cno; 67 68 if (cut(sp, 69 F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL, 70 &vp->m_start, &vp->m_stop, 0)) 71 return (1); 72 return (del(sp, &vp->m_start, &vp->m_stop, 0)); 73 } 74 75 /* 76 * v_Xchar -- [buffer] [count]X 77 * Deletes the character(s) immediately before the current cursor 78 * position. 79 * 80 * PUBLIC: int v_Xchar __P((SCR *, VICMD *)); 81 */ 82 int 83 v_Xchar(sp, vp) 84 SCR *sp; 85 VICMD *vp; 86 { 87 u_long cnt; 88 89 if (vp->m_start.cno == 0) { 90 v_sol(sp); 91 return (1); 92 } 93 94 cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1; 95 if (cnt >= vp->m_start.cno) 96 vp->m_start.cno = 0; 97 else 98 vp->m_start.cno -= cnt; 99 --vp->m_stop.cno; 100 vp->m_final.cno = vp->m_start.cno; 101 102 if (cut(sp, 103 F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL, 104 &vp->m_start, &vp->m_stop, 0)) 105 return (1); 106 return (del(sp, &vp->m_start, &vp->m_stop, 0)); 107 } 108