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 #include <sys/types.h> 13 #include <sys/queue.h> 14 #include <sys/time.h> 15 16 #include <bitstring.h> 17 #include <limits.h> 18 #include <stdio.h> 19 20 #include "../common/common.h" 21 #include "vi.h" 22 23 /* 24 * v_xchar -- [buffer] [count]x 25 * Deletes the character(s) on which the cursor sits. 26 * 27 * PUBLIC: int v_xchar(SCR *, VICMD *); 28 */ 29 int 30 v_xchar(SCR *sp, VICMD *vp) 31 { 32 size_t len; 33 int isempty; 34 35 if (db_eget(sp, vp->m_start.lno, NULL, &len, &isempty)) { 36 if (isempty) 37 goto nodel; 38 return (1); 39 } 40 if (len == 0) { 41 nodel: msgq(sp, M_BERR, "206|No characters to delete"); 42 return (1); 43 } 44 45 /* 46 * Delete from the cursor toward the end of line, w/o moving the 47 * cursor. 48 * 49 * !!! 50 * Note, "2x" at EOL isn't the same as "xx" because the left movement 51 * of the cursor as part of the 'x' command isn't taken into account. 52 * Historically correct. 53 */ 54 if (F_ISSET(vp, VC_C1SET)) 55 vp->m_stop.cno += vp->count - 1; 56 if (vp->m_stop.cno >= len - 1) { 57 vp->m_stop.cno = len - 1; 58 vp->m_final.cno = vp->m_start.cno ? vp->m_start.cno - 1 : 0; 59 } else 60 vp->m_final.cno = vp->m_start.cno; 61 62 if (cut(sp, 63 F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL, 64 &vp->m_start, &vp->m_stop, 0)) 65 return (1); 66 return (del(sp, &vp->m_start, &vp->m_stop, 0)); 67 } 68 69 /* 70 * v_Xchar -- [buffer] [count]X 71 * Deletes the character(s) immediately before the current cursor 72 * position. 73 * 74 * PUBLIC: int v_Xchar(SCR *, VICMD *); 75 */ 76 int 77 v_Xchar(SCR *sp, VICMD *vp) 78 { 79 u_long cnt; 80 81 if (vp->m_start.cno == 0) { 82 v_sol(sp); 83 return (1); 84 } 85 86 cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1; 87 if (cnt >= vp->m_start.cno) 88 vp->m_start.cno = 0; 89 else 90 vp->m_start.cno -= cnt; 91 --vp->m_stop.cno; 92 vp->m_final.cno = vp->m_start.cno; 93 94 if (cut(sp, 95 F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL, 96 &vp->m_start, &vp->m_stop, 0)) 97 return (1); 98 return (del(sp, &vp->m_start, &vp->m_stop, 0)); 99 } 100