[14301] | 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_ch.c 10.8 (Berkeley) 3/6/96"; |
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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 | #include <stdlib.h> |
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| 24 | |
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| 25 | #include "../common/common.h" |
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| 26 | #include "vi.h" |
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| 27 | |
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| 28 | static void notfound __P((SCR *, ARG_CHAR_T)); |
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| 29 | static void noprev __P((SCR *)); |
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| 30 | |
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| 31 | /* |
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| 32 | * v_chrepeat -- [count]; |
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| 33 | * Repeat the last F, f, T or t search. |
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| 34 | * |
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| 35 | * PUBLIC: int v_chrepeat __P((SCR *, VICMD *)); |
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| 36 | */ |
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| 37 | int |
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| 38 | v_chrepeat(sp, vp) |
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| 39 | SCR *sp; |
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| 40 | VICMD *vp; |
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| 41 | { |
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| 42 | vp->character = VIP(sp)->lastckey; |
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| 43 | |
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| 44 | switch (VIP(sp)->csearchdir) { |
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| 45 | case CNOTSET: |
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| 46 | noprev(sp); |
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| 47 | return (1); |
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| 48 | case FSEARCH: |
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| 49 | return (v_chF(sp, vp)); |
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| 50 | case fSEARCH: |
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| 51 | return (v_chf(sp, vp)); |
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| 52 | case TSEARCH: |
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| 53 | return (v_chT(sp, vp)); |
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| 54 | case tSEARCH: |
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| 55 | return (v_cht(sp, vp)); |
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| 56 | default: |
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| 57 | abort(); |
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| 58 | } |
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| 59 | /* NOTREACHED */ |
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| 60 | } |
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| 61 | |
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| 62 | /* |
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| 63 | * v_chrrepeat -- [count], |
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| 64 | * Repeat the last F, f, T or t search in the reverse direction. |
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| 65 | * |
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| 66 | * PUBLIC: int v_chrrepeat __P((SCR *, VICMD *)); |
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| 67 | */ |
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| 68 | int |
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| 69 | v_chrrepeat(sp, vp) |
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| 70 | SCR *sp; |
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| 71 | VICMD *vp; |
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| 72 | { |
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| 73 | cdir_t savedir; |
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| 74 | int rval; |
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| 75 | |
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| 76 | vp->character = VIP(sp)->lastckey; |
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| 77 | savedir = VIP(sp)->csearchdir; |
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| 78 | |
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| 79 | switch (VIP(sp)->csearchdir) { |
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| 80 | case CNOTSET: |
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| 81 | noprev(sp); |
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| 82 | return (1); |
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| 83 | case FSEARCH: |
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| 84 | rval = v_chf(sp, vp); |
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| 85 | break; |
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| 86 | case fSEARCH: |
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| 87 | rval = v_chF(sp, vp); |
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| 88 | break; |
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| 89 | case TSEARCH: |
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| 90 | rval = v_cht(sp, vp); |
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| 91 | break; |
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| 92 | case tSEARCH: |
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| 93 | rval = v_chT(sp, vp); |
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| 94 | break; |
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| 95 | default: |
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| 96 | abort(); |
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| 97 | } |
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| 98 | VIP(sp)->csearchdir = savedir; |
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| 99 | return (rval); |
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| 100 | } |
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| 101 | |
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| 102 | /* |
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| 103 | * v_cht -- [count]tc |
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| 104 | * Search forward in the line for the character before the next |
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| 105 | * occurrence of the specified character. |
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| 106 | * |
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| 107 | * PUBLIC: int v_cht __P((SCR *, VICMD *)); |
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| 108 | */ |
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| 109 | int |
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| 110 | v_cht(sp, vp) |
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| 111 | SCR *sp; |
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| 112 | VICMD *vp; |
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| 113 | { |
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| 114 | if (v_chf(sp, vp)) |
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| 115 | return (1); |
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| 116 | |
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| 117 | /* |
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| 118 | * v_chf places the cursor on the character, where the 't' |
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| 119 | * command wants it to its left. We know this is safe since |
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| 120 | * we had to move right for v_chf() to have succeeded. |
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| 121 | */ |
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| 122 | --vp->m_stop.cno; |
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| 123 | |
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| 124 | /* |
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| 125 | * Make any necessary correction to the motion decision made |
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| 126 | * by the v_chf routine. |
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| 127 | */ |
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| 128 | if (!ISMOTION(vp)) |
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| 129 | vp->m_final = vp->m_stop; |
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| 130 | |
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| 131 | VIP(sp)->csearchdir = tSEARCH; |
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| 132 | return (0); |
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| 133 | } |
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| 134 | |
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| 135 | /* |
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| 136 | * v_chf -- [count]fc |
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| 137 | * Search forward in the line for the next occurrence of the |
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| 138 | * specified character. |
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| 139 | * |
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| 140 | * PUBLIC: int v_chf __P((SCR *, VICMD *)); |
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| 141 | */ |
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| 142 | int |
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| 143 | v_chf(sp, vp) |
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| 144 | SCR *sp; |
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| 145 | VICMD *vp; |
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| 146 | { |
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| 147 | size_t len; |
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| 148 | u_long cnt; |
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| 149 | int isempty, key; |
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| 150 | char *endp, *p, *startp; |
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| 151 | |
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| 152 | /* |
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| 153 | * !!! |
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| 154 | * If it's a dot command, it doesn't reset the key for which we're |
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| 155 | * searching, e.g. in "df1|f2|.|;", the ';' searches for a '2'. |
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| 156 | */ |
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| 157 | key = vp->character; |
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| 158 | if (!F_ISSET(vp, VC_ISDOT)) |
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| 159 | VIP(sp)->lastckey = key; |
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| 160 | VIP(sp)->csearchdir = fSEARCH; |
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| 161 | |
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| 162 | if (db_eget(sp, vp->m_start.lno, &p, &len, &isempty)) { |
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| 163 | if (isempty) |
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| 164 | goto empty; |
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| 165 | return (1); |
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| 166 | } |
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| 167 | |
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| 168 | if (len == 0) { |
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| 169 | empty: notfound(sp, key); |
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| 170 | return (1); |
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| 171 | } |
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| 172 | |
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| 173 | endp = (startp = p) + len; |
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| 174 | p += vp->m_start.cno; |
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| 175 | for (cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1; cnt--;) { |
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| 176 | while (++p < endp && *p != key); |
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| 177 | if (p == endp) { |
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| 178 | notfound(sp, key); |
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| 179 | return (1); |
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| 180 | } |
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| 181 | } |
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| 182 | |
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| 183 | vp->m_stop.cno = p - startp; |
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| 184 | |
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| 185 | /* |
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| 186 | * Non-motion commands move to the end of the range. |
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| 187 | * Delete and yank stay at the start, ignore others. |
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| 188 | */ |
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| 189 | vp->m_final = ISMOTION(vp) ? vp->m_start : vp->m_stop; |
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| 190 | return (0); |
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| 191 | } |
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| 192 | |
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| 193 | /* |
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| 194 | * v_chT -- [count]Tc |
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| 195 | * Search backward in the line for the character after the next |
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| 196 | * occurrence of the specified character. |
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| 197 | * |
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| 198 | * PUBLIC: int v_chT __P((SCR *, VICMD *)); |
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| 199 | */ |
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| 200 | int |
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| 201 | v_chT(sp, vp) |
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| 202 | SCR *sp; |
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| 203 | VICMD *vp; |
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| 204 | { |
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| 205 | if (v_chF(sp, vp)) |
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| 206 | return (1); |
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| 207 | |
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| 208 | /* |
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| 209 | * v_chF places the cursor on the character, where the 'T' |
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| 210 | * command wants it to its right. We know this is safe since |
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| 211 | * we had to move left for v_chF() to have succeeded. |
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| 212 | */ |
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| 213 | ++vp->m_stop.cno; |
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| 214 | vp->m_final = vp->m_stop; |
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| 215 | |
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| 216 | VIP(sp)->csearchdir = TSEARCH; |
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| 217 | return (0); |
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| 218 | } |
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| 219 | |
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| 220 | /* |
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| 221 | * v_chF -- [count]Fc |
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| 222 | * Search backward in the line for the next occurrence of the |
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| 223 | * specified character. |
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| 224 | * |
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| 225 | * PUBLIC: int v_chF __P((SCR *, VICMD *)); |
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| 226 | */ |
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| 227 | int |
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| 228 | v_chF(sp, vp) |
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| 229 | SCR *sp; |
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| 230 | VICMD *vp; |
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| 231 | { |
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| 232 | size_t len; |
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| 233 | u_long cnt; |
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| 234 | int isempty, key; |
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| 235 | char *endp, *p; |
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| 236 | |
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| 237 | /* |
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| 238 | * !!! |
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| 239 | * If it's a dot command, it doesn't reset the key for which |
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| 240 | * we're searching, e.g. in "df1|f2|.|;", the ';' searches |
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| 241 | * for a '2'. |
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| 242 | */ |
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| 243 | key = vp->character; |
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| 244 | if (!F_ISSET(vp, VC_ISDOT)) |
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| 245 | VIP(sp)->lastckey = key; |
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| 246 | VIP(sp)->csearchdir = FSEARCH; |
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| 247 | |
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| 248 | if (db_eget(sp, vp->m_start.lno, &p, &len, &isempty)) { |
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| 249 | if (isempty) |
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| 250 | goto empty; |
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| 251 | return (1); |
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| 252 | } |
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| 253 | |
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| 254 | if (len == 0) { |
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| 255 | empty: notfound(sp, key); |
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| 256 | return (1); |
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| 257 | } |
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| 258 | |
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| 259 | endp = p - 1; |
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| 260 | p += vp->m_start.cno; |
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| 261 | for (cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1; cnt--;) { |
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| 262 | while (--p > endp && *p != key); |
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| 263 | if (p == endp) { |
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| 264 | notfound(sp, key); |
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| 265 | return (1); |
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| 266 | } |
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| 267 | } |
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| 268 | |
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| 269 | vp->m_stop.cno = (p - endp) - 1; |
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| 270 | |
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| 271 | /* |
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| 272 | * All commands move to the end of the range. Motion commands |
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| 273 | * adjust the starting point to the character before the current |
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| 274 | * one. |
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| 275 | */ |
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| 276 | vp->m_final = vp->m_stop; |
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| 277 | if (ISMOTION(vp)) |
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| 278 | --vp->m_start.cno; |
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| 279 | return (0); |
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| 280 | } |
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| 281 | |
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| 282 | static void |
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| 283 | noprev(sp) |
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| 284 | SCR *sp; |
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| 285 | { |
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| 286 | msgq(sp, M_BERR, "178|No previous F, f, T or t search"); |
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| 287 | } |
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| 288 | |
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| 289 | static void |
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| 290 | notfound(sp, ch) |
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| 291 | SCR *sp; |
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| 292 | ARG_CHAR_T ch; |
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| 293 | { |
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| 294 | msgq(sp, M_BERR, "179|%s not found", KEY_NAME(sp, ch)); |
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| 295 | } |
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