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.
7 * See the LICENSE file for redistribution information.
13 static const char sccsid[] = "$Id: v_ch.c,v 10.11 2011/12/02 19:49:50 zy Exp $";
16 #include <sys/types.h>
17 #include <sys/queue.h>
20 #include <bitstring.h>
25 #include "../common/common.h"
28 static void notfound __P((SCR *, ARG_CHAR_T));
29 static void noprev __P((SCR *));
32 * v_chrepeat -- [count];
33 * Repeat the last F, f, T or t search.
35 * PUBLIC: int v_chrepeat __P((SCR *, VICMD *));
38 v_chrepeat(SCR *sp, VICMD *vp)
40 vp->character = VIP(sp)->lastckey;
42 switch (VIP(sp)->csearchdir) {
47 return (v_chF(sp, vp));
49 return (v_chf(sp, vp));
51 return (v_chT(sp, vp));
53 return (v_cht(sp, vp));
61 * v_chrrepeat -- [count],
62 * Repeat the last F, f, T or t search in the reverse direction.
64 * PUBLIC: int v_chrrepeat __P((SCR *, VICMD *));
67 v_chrrepeat(SCR *sp, VICMD *vp)
72 vp->character = VIP(sp)->lastckey;
73 savedir = VIP(sp)->csearchdir;
75 switch (VIP(sp)->csearchdir) {
94 VIP(sp)->csearchdir = savedir;
100 * Search forward in the line for the character before the next
101 * occurrence of the specified character.
103 * PUBLIC: int v_cht __P((SCR *, VICMD *));
106 v_cht(SCR *sp, VICMD *vp)
112 * v_chf places the cursor on the character, where the 't'
113 * command wants it to its left. We know this is safe since
114 * we had to move right for v_chf() to have succeeded.
119 * Make any necessary correction to the motion decision made
120 * by the v_chf routine.
123 vp->m_final = vp->m_stop;
125 VIP(sp)->csearchdir = tSEARCH;
131 * Search forward in the line for the next occurrence of the
132 * specified character.
134 * PUBLIC: int v_chf __P((SCR *, VICMD *));
137 v_chf(SCR *sp, VICMD *vp)
143 CHAR_T *endp, *p, *startp;
147 * If it's a dot command, it doesn't reset the key for which we're
148 * searching, e.g. in "df1|f2|.|;", the ';' searches for a '2'.
151 if (!F_ISSET(vp, VC_ISDOT))
152 VIP(sp)->lastckey = key;
153 VIP(sp)->csearchdir = fSEARCH;
155 if (db_eget(sp, vp->m_start.lno, &p, &len, &isempty)) {
162 empty: notfound(sp, key);
166 endp = (startp = p) + len;
167 p += vp->m_start.cno;
168 for (cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1; cnt--;) {
169 while (++p < endp && *p != key);
176 vp->m_stop.cno = p - startp;
179 * Non-motion commands move to the end of the range.
180 * Delete and yank stay at the start, ignore others.
182 vp->m_final = ISMOTION(vp) ? vp->m_start : vp->m_stop;
188 * Search backward in the line for the character after the next
189 * occurrence of the specified character.
191 * PUBLIC: int v_chT __P((SCR *, VICMD *));
194 v_chT(SCR *sp, VICMD *vp)
200 * v_chF places the cursor on the character, where the 'T'
201 * command wants it to its right. We know this is safe since
202 * we had to move left for v_chF() to have succeeded.
205 vp->m_final = vp->m_stop;
207 VIP(sp)->csearchdir = TSEARCH;
213 * Search backward in the line for the next occurrence of the
214 * specified character.
216 * PUBLIC: int v_chF __P((SCR *, VICMD *));
219 v_chF(SCR *sp, VICMD *vp)
229 * If it's a dot command, it doesn't reset the key for which
230 * we're searching, e.g. in "df1|f2|.|;", the ';' searches
234 if (!F_ISSET(vp, VC_ISDOT))
235 VIP(sp)->lastckey = key;
236 VIP(sp)->csearchdir = FSEARCH;
238 if (db_eget(sp, vp->m_start.lno, &p, &len, &isempty)) {
245 empty: notfound(sp, key);
250 p += vp->m_start.cno;
251 for (cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1; cnt--;) {
252 while (--p > endp && *p != key);
259 vp->m_stop.cno = (p - endp) - 1;
262 * All commands move to the end of the range. Motion commands
263 * adjust the starting point to the character before the current
266 vp->m_final = vp->m_stop;
275 msgq(sp, M_BERR, "178|No previous F, f, T or t search");
279 notfound(SCR *sp, ARG_CHAR_T ch)
281 msgq(sp, M_BERR, "179|%s not found", KEY_NAME(sp, ch));