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_delete -- [buffer][count]d[count]motion 25 * [buffer][count]D 26 * Delete a range of text. 27 * 28 * PUBLIC: int v_delete(SCR *, VICMD *); 29 */ 30 int 31 v_delete(SCR *sp, VICMD *vp) 32 { 33 recno_t nlines; 34 size_t len; 35 int lmode; 36 37 lmode = F_ISSET(vp, VM_LMODE) ? CUT_LINEMODE : 0; 38 39 /* Yank the lines. */ 40 if (cut(sp, F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL, 41 &vp->m_start, &vp->m_stop, 42 lmode | (F_ISSET(vp, VM_CUTREQ) ? CUT_NUMREQ : CUT_NUMOPT))) 43 return (1); 44 45 /* Delete the lines. */ 46 if (del(sp, &vp->m_start, &vp->m_stop, lmode)) 47 return (1); 48 49 /* 50 * Check for deletion of the entire file. Try to check a close 51 * by line so we don't go to the end of the file unnecessarily. 52 */ 53 if (!db_exist(sp, vp->m_final.lno + 1)) { 54 if (db_last(sp, &nlines)) 55 return (1); 56 if (nlines == 0) { 57 vp->m_final.lno = 1; 58 vp->m_final.cno = 0; 59 return (0); 60 } 61 } 62 63 /* 64 * One special correction, in case we've deleted the current line or 65 * character. We check it here instead of checking in every command 66 * that can be a motion component. 67 */ 68 if (db_get(sp, vp->m_final.lno, 0, NULL, &len)) { 69 if (db_get(sp, nlines, DBG_FATAL, NULL, &len)) 70 return (1); 71 vp->m_final.lno = nlines; 72 } 73 74 /* 75 * !!! 76 * Cursor movements, other than those caused by a line mode command 77 * moving to another line, historically reset the relative position. 78 * 79 * This currently matches the check made in v_yank(), I'm hoping that 80 * they should be consistent... 81 */ 82 if (!F_ISSET(vp, VM_LMODE)) { 83 F_CLR(vp, VM_RCM_MASK); 84 F_SET(vp, VM_RCM_SET); 85 86 /* Make sure the set cursor position exists. */ 87 if (vp->m_final.cno >= len) 88 vp->m_final.cno = len ? len - 1 : 0; 89 } 90 91 /* 92 * !!! 93 * The "dd" command moved to the first non-blank; "d<motion>" 94 * didn't. 95 */ 96 if (F_ISSET(vp, VM_LDOUBLE)) { 97 F_CLR(vp, VM_RCM_MASK); 98 F_SET(vp, VM_RCM_SETFNB); 99 } 100 return (0); 101 } 102