| 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_xchar.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_xchar -- [buffer] [count]x |
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| 29 | * Deletes the character(s) on which the cursor sits. |
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| 30 | * |
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| 31 | * PUBLIC: int v_xchar __P((SCR *, VICMD *)); |
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| 32 | */ |
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| 33 | int |
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| 34 | v_xchar(sp, vp) |
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| 35 | SCR *sp; |
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| 36 | VICMD *vp; |
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| 37 | { |
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| 38 | size_t len; |
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| 39 | int isempty; |
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| 40 | |
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| 41 | if (db_eget(sp, vp->m_start.lno, NULL, &len, &isempty)) { |
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| 42 | if (isempty) |
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| 43 | goto nodel; |
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| 44 | return (1); |
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| 45 | } |
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| 46 | if (len == 0) { |
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| 47 | nodel: msgq(sp, M_BERR, "206|No characters to delete"); |
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| 48 | return (1); |
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| 49 | } |
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| 50 | |
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| 51 | /* |
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| 52 | * Delete from the cursor toward the end of line, w/o moving the |
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| 53 | * cursor. |
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| 54 | * |
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| 55 | * !!! |
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| 56 | * Note, "2x" at EOL isn't the same as "xx" because the left movement |
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| 57 | * of the cursor as part of the 'x' command isn't taken into account. |
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| 58 | * Historically correct. |
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| 59 | */ |
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| 60 | if (F_ISSET(vp, VC_C1SET)) |
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| 61 | vp->m_stop.cno += vp->count - 1; |
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| 62 | if (vp->m_stop.cno >= len - 1) { |
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| 63 | vp->m_stop.cno = len - 1; |
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| 64 | vp->m_final.cno = vp->m_start.cno ? vp->m_start.cno - 1 : 0; |
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| 65 | } else |
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| 66 | vp->m_final.cno = vp->m_start.cno; |
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| 67 | |
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| 68 | if (cut(sp, |
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| 69 | F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL, |
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| 70 | &vp->m_start, &vp->m_stop, 0)) |
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| 71 | return (1); |
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| 72 | return (del(sp, &vp->m_start, &vp->m_stop, 0)); |
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| 73 | } |
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| 74 | |
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| 75 | /* |
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| 76 | * v_Xchar -- [buffer] [count]X |
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| 77 | * Deletes the character(s) immediately before the current cursor |
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| 78 | * position. |
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| 79 | * |
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| 80 | * PUBLIC: int v_Xchar __P((SCR *, VICMD *)); |
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| 81 | */ |
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| 82 | int |
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| 83 | v_Xchar(sp, vp) |
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| 84 | SCR *sp; |
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| 85 | VICMD *vp; |
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| 86 | { |
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| 87 | u_long cnt; |
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| 88 | |
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| 89 | if (vp->m_start.cno == 0) { |
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| 90 | v_sol(sp); |
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| 91 | return (1); |
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| 92 | } |
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| 93 | |
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| 94 | cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1; |
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| 95 | if (cnt >= vp->m_start.cno) |
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| 96 | vp->m_start.cno = 0; |
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| 97 | else |
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| 98 | vp->m_start.cno -= cnt; |
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| 99 | --vp->m_stop.cno; |
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| 100 | vp->m_final.cno = vp->m_start.cno; |
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| 101 | |
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| 102 | if (cut(sp, |
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| 103 | F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL, |
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| 104 | &vp->m_start, &vp->m_stop, 0)) |
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| 105 | return (1); |
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| 106 | return (del(sp, &vp->m_start, &vp->m_stop, 0)); |
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| 107 | } |
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