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_delete.c,v 10.11 2001/06/25 15:19:31 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_delete -- [buffer][count]d[count]motion 29 * [buffer][count]D 30 * Delete a range of text. 31 * 32 * PUBLIC: int v_delete __P((SCR *, VICMD *)); 33 */ 34 int 35 v_delete(SCR *sp, VICMD *vp) 36 { 37 recno_t nlines; 38 size_t len; 39 int lmode; 40 41 lmode = F_ISSET(vp, VM_LMODE) ? CUT_LINEMODE : 0; 42 43 /* Yank the lines. */ 44 if (cut(sp, F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL, 45 &vp->m_start, &vp->m_stop, 46 lmode | (F_ISSET(vp, VM_CUTREQ) ? CUT_NUMREQ : CUT_NUMOPT))) 47 return (1); 48 49 /* Delete the lines. */ 50 if (del(sp, &vp->m_start, &vp->m_stop, lmode)) 51 return (1); 52 53 /* 54 * Check for deletion of the entire file. Try to check a close 55 * by line so we don't go to the end of the file unnecessarily. 56 */ 57 if (!db_exist(sp, vp->m_final.lno + 1)) { 58 if (db_last(sp, &nlines)) 59 return (1); 60 if (nlines == 0) { 61 vp->m_final.lno = 1; 62 vp->m_final.cno = 0; 63 return (0); 64 } 65 } 66 67 /* 68 * One special correction, in case we've deleted the current line or 69 * character. We check it here instead of checking in every command 70 * that can be a motion component. 71 */ 72 if (db_get(sp, vp->m_final.lno, 0, NULL, &len)) { 73 if (db_get(sp, nlines, DBG_FATAL, NULL, &len)) 74 return (1); 75 vp->m_final.lno = nlines; 76 } 77 78 /* 79 * !!! 80 * Cursor movements, other than those caused by a line mode command 81 * moving to another line, historically reset the relative position. 82 * 83 * This currently matches the check made in v_yank(), I'm hoping that 84 * they should be consistent... 85 */ 86 if (!F_ISSET(vp, VM_LMODE)) { 87 F_CLR(vp, VM_RCM_MASK); 88 F_SET(vp, VM_RCM_SET); 89 90 /* Make sure the set cursor position exists. */ 91 if (vp->m_final.cno >= len) 92 vp->m_final.cno = len ? len - 1 : 0; 93 } 94 95 /* 96 * !!! 97 * The "dd" command moved to the first non-blank; "d<motion>" 98 * didn't. 99 */ 100 if (F_ISSET(vp, VM_LDOUBLE)) { 101 F_CLR(vp, VM_RCM_MASK); 102 F_SET(vp, VM_RCM_SETFNB); 103 } 104 return (0); 105 } 106