1/* $NetBSD: v_delete.c,v 1.3 2014/01/26 21:43:45 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_delete.c,v 10.11 2001/06/25 15:19:31 skimo Exp (Berkeley) Date: 2001/06/25 15:19:31 "; 17#endif /* not lint */ 18#else 19__RCSID("$NetBSD: v_delete.c,v 1.3 2014/01/26 21:43:45 christos Exp $"); 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_delete -- [buffer][count]d[count]motion 35 * [buffer][count]D 36 * Delete a range of text. 37 * 38 * PUBLIC: int v_delete __P((SCR *, VICMD *)); 39 */ 40int 41v_delete(SCR *sp, VICMD *vp) 42{ 43 db_recno_t nlines; 44 size_t len; 45 int lmode; 46 47 lmode = F_ISSET(vp, VM_LMODE) ? CUT_LINEMODE : 0; 48 49 /* Yank the lines. */ 50 if (cut(sp, F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL, 51 &vp->m_start, &vp->m_stop, 52 lmode | (F_ISSET(vp, VM_CUTREQ) ? CUT_NUMREQ : CUT_NUMOPT))) 53 return (1); 54 55 /* Delete the lines. */ 56 if (del(sp, &vp->m_start, &vp->m_stop, lmode)) 57 return (1); 58 59 /* 60 * Check for deletion of the entire file. Try to check a close 61 * by line so we don't go to the end of the file unnecessarily. 62 */ 63 if (!db_exist(sp, vp->m_final.lno + 1)) { 64 if (db_last(sp, &nlines)) 65 return (1); 66 if (nlines == 0) { 67 vp->m_final.lno = 1; 68 vp->m_final.cno = 0; 69 return (0); 70 } 71 } 72 73 /* 74 * One special correction, in case we've deleted the current line or 75 * character. We check it here instead of checking in every command 76 * that can be a motion component. 77 */ 78 if (db_get(sp, vp->m_final.lno, 0, NULL, &len)) { 79 if (db_get(sp, nlines, DBG_FATAL, NULL, &len)) 80 return (1); 81 vp->m_final.lno = nlines; 82 } 83 84 /* 85 * !!! 86 * Cursor movements, other than those caused by a line mode command 87 * moving to another line, historically reset the relative position. 88 * 89 * This currently matches the check made in v_yank(), I'm hoping that 90 * they should be consistent... 91 */ 92 if (!F_ISSET(vp, VM_LMODE)) { 93 F_CLR(vp, VM_RCM_MASK); 94 F_SET(vp, VM_RCM_SET); 95 96 /* Make sure the set cursor position exists. */ 97 if (vp->m_final.cno >= len) 98 vp->m_final.cno = len ? len - 1 : 0; 99 } 100 101 /* 102 * !!! 103 * The "dd" command moved to the first non-blank; "d<motion>" 104 * didn't. 105 */ 106 if (F_ISSET(vp, VM_LDOUBLE)) { 107 F_CLR(vp, VM_RCM_MASK); 108 F_SET(vp, VM_RCM_SETFNB); 109 } 110 return (0); 111} 112