| 1 | /*- |
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| 2 | * Copyright (c) 1992, 1993, 1994 |
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| 3 | * The Regents of the University of California. All rights reserved. |
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| 4 | * Copyright (c) 1992, 1993, 1994, 1995, 1996 |
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| 5 | * Keith Bostic. All rights reserved. |
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| 6 | * |
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| 7 | * See the LICENSE file for redistribution information. |
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| 8 | */ |
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| 9 | |
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| 10 | #include "config.h" |
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| 11 | |
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| 12 | #ifndef lint |
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| 13 | static const char sccsid[] = "@(#)v_delete.c 10.9 (Berkeley) 10/23/96"; |
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| 14 | #endif /* not lint */ |
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| 15 | |
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| 16 | #include <sys/types.h> |
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| 17 | #include <sys/queue.h> |
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| 18 | #include <sys/time.h> |
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| 19 | |
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| 20 | #include <bitstring.h> |
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| 21 | #include <limits.h> |
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| 22 | #include <stdio.h> |
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| 23 | |
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| 24 | #include "../common/common.h" |
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| 25 | #include "vi.h" |
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| 26 | |
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| 27 | /* |
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| 28 | * v_delete -- [buffer][count]d[count]motion |
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| 29 | * [buffer][count]D |
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| 30 | * Delete a range of text. |
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| 31 | * |
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| 32 | * PUBLIC: int v_delete __P((SCR *, VICMD *)); |
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| 33 | */ |
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| 34 | int |
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| 35 | v_delete(sp, vp) |
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| 36 | SCR *sp; |
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| 37 | VICMD *vp; |
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| 38 | { |
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| 39 | recno_t nlines; |
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| 40 | size_t len; |
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| 41 | int lmode; |
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| 42 | |
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| 43 | lmode = F_ISSET(vp, VM_LMODE) ? CUT_LINEMODE : 0; |
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| 44 | |
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| 45 | /* Yank the lines. */ |
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| 46 | if (cut(sp, F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL, |
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| 47 | &vp->m_start, &vp->m_stop, |
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| 48 | lmode | (F_ISSET(vp, VM_CUTREQ) ? CUT_NUMREQ : CUT_NUMOPT))) |
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| 49 | return (1); |
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| 50 | |
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| 51 | /* Delete the lines. */ |
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| 52 | if (del(sp, &vp->m_start, &vp->m_stop, lmode)) |
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| 53 | return (1); |
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| 54 | |
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| 55 | /* |
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| 56 | * Check for deletion of the entire file. Try to check a close |
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| 57 | * by line so we don't go to the end of the file unnecessarily. |
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| 58 | */ |
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| 59 | if (!db_exist(sp, vp->m_final.lno + 1)) { |
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| 60 | if (db_last(sp, &nlines)) |
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| 61 | return (1); |
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| 62 | if (nlines == 0) { |
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| 63 | vp->m_final.lno = 1; |
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| 64 | vp->m_final.cno = 0; |
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| 65 | return (0); |
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| 66 | } |
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| 67 | } |
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| 68 | |
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| 69 | /* |
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| 70 | * One special correction, in case we've deleted the current line or |
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| 71 | * character. We check it here instead of checking in every command |
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| 72 | * that can be a motion component. |
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| 73 | */ |
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| 74 | if (db_get(sp, vp->m_final.lno, 0, NULL, &len)) { |
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| 75 | if (db_get(sp, nlines, DBG_FATAL, NULL, &len)) |
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| 76 | return (1); |
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| 77 | vp->m_final.lno = nlines; |
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| 78 | } |
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| 79 | |
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| 80 | /* |
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| 81 | * !!! |
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| 82 | * Cursor movements, other than those caused by a line mode command |
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| 83 | * moving to another line, historically reset the relative position. |
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| 84 | * |
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| 85 | * This currently matches the check made in v_yank(), I'm hoping that |
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| 86 | * they should be consistent... |
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| 87 | */ |
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| 88 | if (!F_ISSET(vp, VM_LMODE)) { |
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| 89 | F_CLR(vp, VM_RCM_MASK); |
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| 90 | F_SET(vp, VM_RCM_SET); |
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| 91 | |
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| 92 | /* Make sure the set cursor position exists. */ |
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| 93 | if (vp->m_final.cno >= len) |
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| 94 | vp->m_final.cno = len ? len - 1 : 0; |
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| 95 | } |
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| 96 | |
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| 97 | /* |
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| 98 | * !!! |
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| 99 | * The "dd" command moved to the first non-blank; "d<motion>" |
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| 100 | * didn't. |
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| 101 | */ |
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| 102 | if (F_ISSET(vp, VM_LDOUBLE)) { |
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| 103 | F_CLR(vp, VM_RCM_MASK); |
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| 104 | F_SET(vp, VM_RCM_SETFNB); |
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| 105 | } |
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| 106 | return (0); |
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| 107 | } |
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