[deliverable/titan.core.git] / mctr2 / editline / libedit / src / search.c

/*	$NetBSD: search.c,v 1.24 2010/04/15 00:57:33 christos Exp $	*/

/*-
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Christos Zoulas of Cornell University.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include "config.h"
#if !defined(lint) && !defined(SCCSID)
#if 0
static char sccsid[] = "@(#)search.c	8.1 (Berkeley) 6/4/93";
#else
__RCSID("$NetBSD: search.c,v 1.24 2010/04/15 00:57:33 christos Exp $");
#endif
#endif /* not lint && not SCCSID */

/*
 * search.c: History and character search functions
 */
#include <stdlib.h>
#include <sys/types.h>
#if defined(REGEX)
#include <regex.h>
#elif defined(REGEXP)
#include <regexp.h>
#endif
#include "el.h"

/*
 * Adjust cursor in vi mode to include the character under it
 */
#define	EL_CURSOR(el) \
    ((el)->el_line.cursor + (((el)->el_map.type == MAP_VI) && \
			    ((el)->el_map.current == (el)->el_map.alt)))

/* search_init():
 *	Initialize the search stuff
 */
protected int
search_init(EditLine *el)
{

	el->el_search.patbuf = el_malloc(EL_BUFSIZ *
	    sizeof(*el->el_search.patbuf));
	if (el->el_search.patbuf == NULL)
		return (-1);
	el->el_search.patlen = 0;
	el->el_search.patdir = -1;
	el->el_search.chacha = '\0';
	el->el_search.chadir = CHAR_FWD;
	el->el_search.chatflg = 0;
	return (0);
}


/* search_end():
 *	Initialize the search stuff
 */
protected void
search_end(EditLine *el)
{

	el_free((ptr_t) el->el_search.patbuf);
	el->el_search.patbuf = NULL;
}


#ifdef REGEXP
/* regerror():
 *	Handle regular expression errors
 */
public void
/*ARGSUSED*/
regerror(const char *msg)
{
}
#endif


/* el_match():
 *	Return if string matches pattern
 */
protected int
el_match(const Char *str, const Char *pat)
{
#ifdef WIDECHAR
	static ct_buffer_t conv;
#endif
#if defined (REGEX)
	regex_t re;
	int rv;
#elif defined (REGEXP)
	regexp *rp;
	int rv;
#else
	extern char	*re_comp(const char *);
	extern int	 re_exec(const char *);
#endif

	if (Strstr(str, pat) != 0)
		return (1);

#if defined(REGEX)
	if (regcomp(&re, ct_encode_string(pat, &conv), 0) == 0) {
		rv = regexec(&re, ct_encode_string(str, &conv), 0, NULL, 0) == 0;
		regfree(&re);
	} else {
		rv = 0;
	}
	return (rv);
#elif defined(REGEXP)
	if ((re = regcomp(ct_encode_string(pat, &conv))) != NULL) {
		rv = regexec(re, ct_encode_string(str, &conv));
		free((ptr_t) re);
	} else {
		rv = 0;
	}
	return (rv);
#else
	if (re_comp(ct_encode_string(pat, &conv)) != NULL)
		return (0);
	else
		return (re_exec(ct_encode_string(str, &conv)) == 1);
#endif
}


/* c_hmatch():
 *	 return True if the pattern matches the prefix
 */
protected int
c_hmatch(EditLine *el, const Char *str)
{
#ifdef SDEBUG
	(void) fprintf(el->el_errfile, "match `%s' with `%s'\n",
	    el->el_search.patbuf, str);
#endif /* SDEBUG */

	return (el_match(str, el->el_search.patbuf));
}


/* c_setpat():
 *	Set the history seatch pattern
 */
protected void
c_setpat(EditLine *el)
{
	if (el->el_state.lastcmd != ED_SEARCH_PREV_HISTORY &&
	    el->el_state.lastcmd != ED_SEARCH_NEXT_HISTORY) {
		el->el_search.patlen = EL_CURSOR(el) - el->el_line.buffer;
		if (el->el_search.patlen >= EL_BUFSIZ)
			el->el_search.patlen = EL_BUFSIZ - 1;
		if (el->el_search.patlen != 0) {
			(void) Strncpy(el->el_search.patbuf, el->el_line.buffer,
			    el->el_search.patlen);
			el->el_search.patbuf[el->el_search.patlen] = '\0';
		} else
			el->el_search.patlen = Strlen(el->el_search.patbuf);
	}
#ifdef SDEBUG
	(void) fprintf(el->el_errfile, "\neventno = %d\n",
	    el->el_history.eventno);
	(void) fprintf(el->el_errfile, "patlen = %d\n", el->el_search.patlen);
	(void) fprintf(el->el_errfile, "patbuf = \"%s\"\n",
	    el->el_search.patbuf);
	(void) fprintf(el->el_errfile, "cursor %d lastchar %d\n",
	    EL_CURSOR(el) - el->el_line.buffer,
	    el->el_line.lastchar - el->el_line.buffer);
#endif
}


/* ce_inc_search():
 *	Emacs incremental search
 */
protected el_action_t
ce_inc_search(EditLine *el, int dir)
{
	static const Char STRfwd[] = {'f', 'w', 'd', '\0'},
	     STRbck[] = {'b', 'c', 'k', '\0'};
	static Char pchar = ':';/* ':' = normal, '?' = failed */
	static Char endcmd[2] = {'\0', '\0'};
	Char ch, *ocursor = el->el_line.cursor, oldpchar = pchar;
	const Char *cp;

	el_action_t ret = CC_NORM;

	int ohisteventno = el->el_history.eventno;
	size_t oldpatlen = el->el_search.patlen;
	int newdir = dir;
	int done, redo;

	if (el->el_line.lastchar + sizeof(STRfwd) /
	    sizeof(*el->el_line.lastchar) + 2 +
	    el->el_search.patlen >= el->el_line.limit)
		return (CC_ERROR);

	for (;;) {

		if (el->el_search.patlen == 0) {	/* first round */
			pchar = ':';
#ifdef ANCHOR
#define	LEN	2
			el->el_search.patbuf[el->el_search.patlen++] = '.';
			el->el_search.patbuf[el->el_search.patlen++] = '*';
#else
#define	LEN	0
#endif
		}
		done = redo = 0;
		*el->el_line.lastchar++ = '\n';
		for (cp = (newdir == ED_SEARCH_PREV_HISTORY) ? STRbck : STRfwd;
		    *cp; *el->el_line.lastchar++ = *cp++)
			continue;
		*el->el_line.lastchar++ = pchar;
		for (cp = &el->el_search.patbuf[LEN];
		    cp < &el->el_search.patbuf[el->el_search.patlen];
		    *el->el_line.lastchar++ = *cp++)
			continue;
		*el->el_line.lastchar = '\0';
		re_refresh(el);

		if (FUN(el,getc)(el, &ch) != 1)
			return (ed_end_of_file(el, 0));

		switch (el->el_map.current[(unsigned char) ch]) {
		case ED_INSERT:
		case ED_DIGIT:
			if (el->el_search.patlen >= EL_BUFSIZ - LEN)
				term_beep(el);
			else {
				el->el_search.patbuf[el->el_search.patlen++] =
				    ch;
				*el->el_line.lastchar++ = ch;
				*el->el_line.lastchar = '\0';
				re_refresh(el);
			}
			break;

		case EM_INC_SEARCH_NEXT:
			newdir = ED_SEARCH_NEXT_HISTORY;
			redo++;
			break;

		case EM_INC_SEARCH_PREV:
			newdir = ED_SEARCH_PREV_HISTORY;
			redo++;
			break;

		case EM_DELETE_PREV_CHAR:
		case ED_DELETE_PREV_CHAR:
			if (el->el_search.patlen > LEN)
				done++;
			else
				term_beep(el);
			break;

		default:
			switch (ch) {
			case 0007:	/* ^G: Abort */
				ret = CC_ERROR;
				done++;
				break;

			case 0027:	/* ^W: Append word */
			/* No can do if globbing characters in pattern */
				for (cp = &el->el_search.patbuf[LEN];; cp++)
				    if (cp >= &el->el_search.patbuf[
					el->el_search.patlen]) {
					el->el_line.cursor +=
					    el->el_search.patlen - LEN - 1;
					cp = c__next_word(el->el_line.cursor,
					    el->el_line.lastchar, 1,
					    ce__isword);
					while (el->el_line.cursor < cp &&
					    *el->el_line.cursor != '\n') {
						if (el->el_search.patlen >=
						    EL_BUFSIZ - LEN) {
							term_beep(el);
							break;
						}
						el->el_search.patbuf[el->el_search.patlen++] =
						    *el->el_line.cursor;
						*el->el_line.lastchar++ =
						    *el->el_line.cursor++;
					}
					el->el_line.cursor = ocursor;
					*el->el_line.lastchar = '\0';
					re_refresh(el);
					break;
				    } else if (isglob(*cp)) {
					    term_beep(el);
					    break;
				    }
				break;

			default:	/* Terminate and execute cmd */
				endcmd[0] = ch;
				FUN(el,push)(el, endcmd);
				/* FALLTHROUGH */

			case 0033:	/* ESC: Terminate */
				ret = CC_REFRESH;
				done++;
				break;
			}
			break;
		}

		while (el->el_line.lastchar > el->el_line.buffer &&
		    *el->el_line.lastchar != '\n')
			*el->el_line.lastchar-- = '\0';
		*el->el_line.lastchar = '\0';

		if (!done) {

			/* Can't search if unmatched '[' */
			for (cp = &el->el_search.patbuf[el->el_search.patlen-1],
			    ch = ']';
			    cp >= &el->el_search.patbuf[LEN];
			    cp--)
				if (*cp == '[' || *cp == ']') {
					ch = *cp;
					break;
				}
			if (el->el_search.patlen > LEN && ch != '[') {
				if (redo && newdir == dir) {
					if (pchar == '?') { /* wrap around */
						el->el_history.eventno =
						    newdir == ED_SEARCH_PREV_HISTORY ? 0 : 0x7fffffff;
						if (hist_get(el) == CC_ERROR)
							/* el->el_history.event
							 * no was fixed by
							 * first call */
							(void) hist_get(el);
						el->el_line.cursor = newdir ==
						    ED_SEARCH_PREV_HISTORY ?
						    el->el_line.lastchar :
						    el->el_line.buffer;
					} else
						el->el_line.cursor +=
						    newdir ==
						    ED_SEARCH_PREV_HISTORY ?
						    -1 : 1;
				}
#ifdef ANCHOR
				el->el_search.patbuf[el->el_search.patlen++] =
				    '.';
				el->el_search.patbuf[el->el_search.patlen++] =
				    '*';
#endif
				el->el_search.patbuf[el->el_search.patlen] =
				    '\0';
				if (el->el_line.cursor < el->el_line.buffer ||
				    el->el_line.cursor > el->el_line.lastchar ||
				    (ret = ce_search_line(el, newdir))
				    == CC_ERROR) {
					/* avoid c_setpat */
					el->el_state.lastcmd =
					    (el_action_t) newdir;
					ret = newdir == ED_SEARCH_PREV_HISTORY ?
					    ed_search_prev_history(el, 0) :
					    ed_search_next_history(el, 0);
					if (ret != CC_ERROR) {
						el->el_line.cursor = newdir ==
						    ED_SEARCH_PREV_HISTORY ?
						    el->el_line.lastchar :
						    el->el_line.buffer;
						(void) ce_search_line(el,
						    newdir);
					}
				}
				el->el_search.patlen -= LEN;
				el->el_search.patbuf[el->el_search.patlen] =
				    '\0';
				if (ret == CC_ERROR) {
					term_beep(el);
					if (el->el_history.eventno !=
					    ohisteventno) {
						el->el_history.eventno =
						    ohisteventno;
						if (hist_get(el) == CC_ERROR)
							return (CC_ERROR);
					}
					el->el_line.cursor = ocursor;
					pchar = '?';
				} else {
					pchar = ':';
				}
			}
			ret = ce_inc_search(el, newdir);

			if (ret == CC_ERROR && pchar == '?' && oldpchar == ':')
				/*
				 * break abort of failed search at last
				 * non-failed
				 */
				ret = CC_NORM;

		}
		if (ret == CC_NORM || (ret == CC_ERROR && oldpatlen == 0)) {
			/* restore on normal return or error exit */
			pchar = oldpchar;
			el->el_search.patlen = oldpatlen;
			if (el->el_history.eventno != ohisteventno) {
				el->el_history.eventno = ohisteventno;
				if (hist_get(el) == CC_ERROR)
					return (CC_ERROR);
			}
			el->el_line.cursor = ocursor;
			if (ret == CC_ERROR)
				re_refresh(el);
		}
		if (done || ret != CC_NORM)
			return (ret);
	}
}


/* cv_search():
 *	Vi search.
 */
protected el_action_t
cv_search(EditLine *el, int dir)
{
	Char ch;
	Char tmpbuf[EL_BUFSIZ];
	int tmplen;

#ifdef ANCHOR
	tmpbuf[0] = '.';
	tmpbuf[1] = '*';
#endif
	tmplen = LEN;

	el->el_search.patdir = dir;

	tmplen = c_gets(el, &tmpbuf[LEN],
		dir == ED_SEARCH_PREV_HISTORY ? STR("\n/") : STR("\n?") );
	if (tmplen == -1)
		return CC_REFRESH;

	tmplen += LEN;
	ch = tmpbuf[tmplen];
	tmpbuf[tmplen] = '\0';

	if (tmplen == LEN) {
		/*
		 * Use the old pattern, but wild-card it.
		 */
		if (el->el_search.patlen == 0) {
			re_refresh(el);
			return (CC_ERROR);
		}
#ifdef ANCHOR
		if (el->el_search.patbuf[0] != '.' &&
		    el->el_search.patbuf[0] != '*') {
			(void) Strncpy(tmpbuf, el->el_search.patbuf,
			    sizeof(tmpbuf) / sizeof(*tmpbuf) - 1);
			el->el_search.patbuf[0] = '.';
			el->el_search.patbuf[1] = '*';
			(void) Strncpy(&el->el_search.patbuf[2], tmpbuf,
			    EL_BUFSIZ - 3);
			el->el_search.patlen++;
			el->el_search.patbuf[el->el_search.patlen++] = '.';
			el->el_search.patbuf[el->el_search.patlen++] = '*';
			el->el_search.patbuf[el->el_search.patlen] = '\0';
		}
#endif
	} else {
#ifdef ANCHOR
		tmpbuf[tmplen++] = '.';
		tmpbuf[tmplen++] = '*';
#endif
		tmpbuf[tmplen] = '\0';
		(void) Strncpy(el->el_search.patbuf, tmpbuf, EL_BUFSIZ - 1);
		el->el_search.patlen = tmplen;
	}
	el->el_state.lastcmd = (el_action_t) dir;	/* avoid c_setpat */
	el->el_line.cursor = el->el_line.lastchar = el->el_line.buffer;
	if ((dir == ED_SEARCH_PREV_HISTORY ? ed_search_prev_history(el, 0) :
	    ed_search_next_history(el, 0)) == CC_ERROR) {
		re_refresh(el);
		return (CC_ERROR);
	}
	if (ch == 0033) {
		re_refresh(el);
		return ed_newline(el, 0);
	}
	return (CC_REFRESH);
}


/* ce_search_line():
 *	Look for a pattern inside a line
 */
protected el_action_t
ce_search_line(EditLine *el, int dir)
{
	Char *cp = el->el_line.cursor;
	Char *pattern = el->el_search.patbuf;
	Char oc, *ocp;
#ifdef ANCHOR
	ocp = &pattern[1];
	oc = *ocp;
	*ocp = '^';
#else
	ocp = pattern;
	oc = *ocp;
#endif

	if (dir == ED_SEARCH_PREV_HISTORY) {
		for (; cp >= el->el_line.buffer; cp--) {
			if (el_match(cp, ocp)) {
				*ocp = oc;
				el->el_line.cursor = cp;
				return (CC_NORM);
			}
		}
		*ocp = oc;
		return (CC_ERROR);
	} else {
		for (; *cp != '\0' && cp < el->el_line.limit; cp++) {
			if (el_match(cp, ocp)) {
				*ocp = oc;
				el->el_line.cursor = cp;
				return (CC_NORM);
			}
		}
		*ocp = oc;
		return (CC_ERROR);
	}
}


/* cv_repeat_srch():
 *	Vi repeat search
 */
protected el_action_t
cv_repeat_srch(EditLine *el, Int c)
{

#ifdef SDEBUG
	(void) fprintf(el->el_errfile, "dir %d patlen %d patbuf %s\n",
	    c, el->el_search.patlen, ct_encode_string(el->el_search.patbuf));
#endif

	el->el_state.lastcmd = (el_action_t) c;	/* Hack to stop c_setpat */
	el->el_line.lastchar = el->el_line.buffer;

	switch (c) {
	case ED_SEARCH_NEXT_HISTORY:
		return (ed_search_next_history(el, 0));
	case ED_SEARCH_PREV_HISTORY:
		return (ed_search_prev_history(el, 0));
	default:
		return (CC_ERROR);
	}
}


/* cv_csearch():
 *	Vi character search
 */
protected el_action_t
cv_csearch(EditLine *el, int direction, Int ch, int count, int tflag)
{
	Char *cp;

	if (ch == 0)
		return CC_ERROR;

	if (ch == -1) {
		Char c;
		if (FUN(el,getc)(el, &c) != 1)
			return ed_end_of_file(el, 0);
		ch = c;
	}

	/* Save for ';' and ',' commands */
	el->el_search.chacha = ch;
	el->el_search.chadir = direction;
	el->el_search.chatflg = tflag;

	cp = el->el_line.cursor;
	while (count--) {
		if (*cp == ch)
			cp += direction;
		for (;;cp += direction) {
			if (cp >= el->el_line.lastchar)
				return CC_ERROR;
			if (cp < el->el_line.buffer)
				return CC_ERROR;
			if (*cp == ch)
				break;
		}
	}

	if (tflag)
		cp -= direction;

	el->el_line.cursor = cp;

	if (el->el_chared.c_vcmd.action != NOP) {
		if (direction > 0)
			el->el_line.cursor++;
		cv_delfini(el);
		return CC_REFRESH;
	}
	return CC_CURSOR;
}
Commit	Line	Data
970ed795 EL	1	/* $NetBSD: search.c,v 1.24 2010/04/15 00:57:33 christos Exp $ */
	2
	3	/*-
	4	* Copyright (c) 1992, 1993
	5	* The Regents of the University of California. All rights reserved.
	6	*
	7	* This code is derived from software contributed to Berkeley by
	8	* Christos Zoulas of Cornell University.
	9	*
	10	* Redistribution and use in source and binary forms, with or without
	11	* modification, are permitted provided that the following conditions
	12	* are met:
	13	* 1. Redistributions of source code must retain the above copyright
	14	* notice, this list of conditions and the following disclaimer.
	15	* 2. Redistributions in binary form must reproduce the above copyright
	16	* notice, this list of conditions and the following disclaimer in the
	17	* documentation and/or other materials provided with the distribution.
	18	* 3. Neither the name of the University nor the names of its contributors
	19	* may be used to endorse or promote products derived from this software
	20	* without specific prior written permission.
	21	*
	22	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	23	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	24	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	25	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	26	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	27	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	28	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	29	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	30	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	31	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	32	* SUCH DAMAGE.
	33	*/
	34
	35	#include "config.h"
	36	#if !defined(lint) && !defined(SCCSID)
	37	#if 0
	38	static char sccsid[] = "@(#)search.c 8.1 (Berkeley) 6/4/93";
	39	#else
	40	__RCSID("$NetBSD: search.c,v 1.24 2010/04/15 00:57:33 christos Exp $");
	41	#endif
	42	#endif /* not lint && not SCCSID */
	43
	44	/*
	45	* search.c: History and character search functions
	46	*/
	47	#include <stdlib.h>
	48	#include <sys/types.h>
	49	#if defined(REGEX)
	50	#include <regex.h>
	51	#elif defined(REGEXP)
	52	#include <regexp.h>
	53	#endif
	54	#include "el.h"
	55
	56	/*
	57	* Adjust cursor in vi mode to include the character under it
	58	*/
	59	#define EL_CURSOR(el) \
	60	((el)->el_line.cursor + (((el)->el_map.type == MAP_VI) && \
	61	((el)->el_map.current == (el)->el_map.alt)))
	62
	63	/* search_init():
	64	* Initialize the search stuff
65	*/
66	protected int
67	search_init(EditLine *el)
68	{
69
70	el->el_search.patbuf = el_malloc(EL_BUFSIZ *
71	sizeof(*el->el_search.patbuf));
72	if (el->el_search.patbuf == NULL)
73	return (-1);
74	el->el_search.patlen = 0;
75	el->el_search.patdir = -1;
76	el->el_search.chacha = '\0';
77	el->el_search.chadir = CHAR_FWD;
78	el->el_search.chatflg = 0;
79	return (0);
80	}
81
82
83	/* search_end():
84	* Initialize the search stuff
85	*/
86	protected void
87	search_end(EditLine *el)
88	{
89
90	el_free((ptr_t) el->el_search.patbuf);
91	el->el_search.patbuf = NULL;
92	}
93
94
95	#ifdef REGEXP
96	/* regerror():
97	* Handle regular expression errors
98	*/
99	public void
100	/ARGSUSED/
101	regerror(const char *msg)
102	{
103	}
104	#endif
105
106
107	/* el_match():
108	* Return if string matches pattern
109	*/
110	protected int
111	el_match(const Char str, const Char pat)
112	{
113	#ifdef WIDECHAR
114	static ct_buffer_t conv;
115	#endif
116	#if defined (REGEX)
117	regex_t re;
118	int rv;
119	#elif defined (REGEXP)
120	regexp *rp;
121	int rv;
122	#else
123	extern char re_comp(const char );
124	extern int re_exec(const char *);
125	#endif
126
127	if (Strstr(str, pat) != 0)
128	return (1);
129
130	#if defined(REGEX)
131	if (regcomp(&re, ct_encode_string(pat, &conv), 0) == 0) {
132	rv = regexec(&re, ct_encode_string(str, &conv), 0, NULL, 0) == 0;
133	regfree(&re);
134	} else {
135	rv = 0;
136	}
137	return (rv);
138	#elif defined(REGEXP)
139	if ((re = regcomp(ct_encode_string(pat, &conv))) != NULL) {
140	rv = regexec(re, ct_encode_string(str, &conv));
141	free((ptr_t) re);
142	} else {
143	rv = 0;
144	}
145	return (rv);
146	#else
147	if (re_comp(ct_encode_string(pat, &conv)) != NULL)
148	return (0);
149	else
150	return (re_exec(ct_encode_string(str, &conv)) == 1);
151	#endif
152	}
153
154
155	/* c_hmatch():
156	* return True if the pattern matches the prefix
157	*/
158	protected int
159	c_hmatch(EditLine el, const Char str)
160	{
161	#ifdef SDEBUG
162	(void) fprintf(el->el_errfile, "match `%s' with `%s'\n",
163	el->el_search.patbuf, str);
164	#endif /* SDEBUG */
165
166	return (el_match(str, el->el_search.patbuf));
167	}
168
169
170	/* c_setpat():
171	* Set the history seatch pattern
172	*/
173	protected void
174	c_setpat(EditLine *el)
175	{
176	if (el->el_state.lastcmd != ED_SEARCH_PREV_HISTORY &&
177	el->el_state.lastcmd != ED_SEARCH_NEXT_HISTORY) {
178	el->el_search.patlen = EL_CURSOR(el) - el->el_line.buffer;
179	if (el->el_search.patlen >= EL_BUFSIZ)
180	el->el_search.patlen = EL_BUFSIZ - 1;
181	if (el->el_search.patlen != 0) {
182	(void) Strncpy(el->el_search.patbuf, el->el_line.buffer,
183	el->el_search.patlen);
184	el->el_search.patbuf[el->el_search.patlen] = '\0';
185	} else
186	el->el_search.patlen = Strlen(el->el_search.patbuf);
187	}
188	#ifdef SDEBUG
189	(void) fprintf(el->el_errfile, "\neventno = %d\n",
190	el->el_history.eventno);
191	(void) fprintf(el->el_errfile, "patlen = %d\n", el->el_search.patlen);
192	(void) fprintf(el->el_errfile, "patbuf = \"%s\"\n",
193	el->el_search.patbuf);
194	(void) fprintf(el->el_errfile, "cursor %d lastchar %d\n",
195	EL_CURSOR(el) - el->el_line.buffer,
196	el->el_line.lastchar - el->el_line.buffer);
197	#endif
198	}
199
200
201	/* ce_inc_search():
202	* Emacs incremental search
203	*/
204	protected el_action_t
205	ce_inc_search(EditLine *el, int dir)
206	{
207	static const Char STRfwd[] = {'f', 'w', 'd', '\0'},
208	STRbck[] = {'b', 'c', 'k', '\0'};
209	static Char pchar = ':';/* ':' = normal, '?' = failed */
210	static Char endcmd[2] = {'\0', '\0'};
211	Char ch, *ocursor = el->el_line.cursor, oldpchar = pchar;
212	const Char *cp;
213
214	el_action_t ret = CC_NORM;
215
216	int ohisteventno = el->el_history.eventno;
217	size_t oldpatlen = el->el_search.patlen;
218	int newdir = dir;
219	int done, redo;
220
221	if (el->el_line.lastchar + sizeof(STRfwd) /
222	sizeof(*el->el_line.lastchar) + 2 +
223	el->el_search.patlen >= el->el_line.limit)
224	return (CC_ERROR);
225
226	for (;;) {
227
228	if (el->el_search.patlen == 0) { /* first round */
229	pchar = ':';
230	#ifdef ANCHOR
231	#define LEN 2
232	el->el_search.patbuf[el->el_search.patlen++] = '.';
233	el->el_search.patbuf[el->el_search.patlen++] = '*';
234	#else
235	#define LEN 0
236	#endif
237	}
238	done = redo = 0;
239	*el->el_line.lastchar++ = '\n';
240	for (cp = (newdir == ED_SEARCH_PREV_HISTORY) ? STRbck : STRfwd;
241	cp; el->el_line.lastchar++ = *cp++)
242	continue;
243	*el->el_line.lastchar++ = pchar;
244	for (cp = &el->el_search.patbuf[LEN];
245	cp < &el->el_search.patbuf[el->el_search.patlen];
246	el->el_line.lastchar++ = cp++)
247	continue;
248	*el->el_line.lastchar = '\0';
249	re_refresh(el);
250
251	if (FUN(el,getc)(el, &ch) != 1)
252	return (ed_end_of_file(el, 0));
253
254	switch (el->el_map.current[(unsigned char) ch]) {
255	case ED_INSERT:
256	case ED_DIGIT:
257	if (el->el_search.patlen >= EL_BUFSIZ - LEN)
258	term_beep(el);
259	else {
260	el->el_search.patbuf[el->el_search.patlen++] =
261	ch;
262	*el->el_line.lastchar++ = ch;
263	*el->el_line.lastchar = '\0';
264	re_refresh(el);
265	}
266	break;
267
268	case EM_INC_SEARCH_NEXT:
269	newdir = ED_SEARCH_NEXT_HISTORY;
270	redo++;
271	break;
272
273	case EM_INC_SEARCH_PREV:
274	newdir = ED_SEARCH_PREV_HISTORY;
275	redo++;
276	break;
277
278	case EM_DELETE_PREV_CHAR:
279	case ED_DELETE_PREV_CHAR:
280	if (el->el_search.patlen > LEN)
281	done++;
282	else
283	term_beep(el);
284	break;
285
286	default:
287	switch (ch) {
288	case 0007: /* ^G: Abort */
289	ret = CC_ERROR;
290	done++;
291	break;
292
293	case 0027: /* ^W: Append word */
294	/* No can do if globbing characters in pattern */
295	for (cp = &el->el_search.patbuf[LEN];; cp++)
296	if (cp >= &el->el_search.patbuf[
297	el->el_search.patlen]) {
298	el->el_line.cursor +=
299	el->el_search.patlen - LEN - 1;
300	cp = c__next_word(el->el_line.cursor,
301	el->el_line.lastchar, 1,
302	ce__isword);
303	while (el->el_line.cursor < cp &&
304	*el->el_line.cursor != '\n') {
305	if (el->el_search.patlen >=
306	EL_BUFSIZ - LEN) {
307	term_beep(el);
308	break;
309	}
310	el->el_search.patbuf[el->el_search.patlen++] =
311	*el->el_line.cursor;
312	*el->el_line.lastchar++ =
313	*el->el_line.cursor++;
314	}
315	el->el_line.cursor = ocursor;
316	*el->el_line.lastchar = '\0';
317	re_refresh(el);
318	break;
319	} else if (isglob(*cp)) {
320	term_beep(el);
321	break;
322	}
323	break;
324
325	default: /* Terminate and execute cmd */
326	endcmd[0] = ch;
327	FUN(el,push)(el, endcmd);
328	/* FALLTHROUGH */
329
330	case 0033: /* ESC: Terminate */
331	ret = CC_REFRESH;
332	done++;
333	break;
334	}
335	break;
336	}
337
338	while (el->el_line.lastchar > el->el_line.buffer &&
339	*el->el_line.lastchar != '\n')
340	*el->el_line.lastchar-- = '\0';
341	*el->el_line.lastchar = '\0';
342
343	if (!done) {
344
345	/* Can't search if unmatched '[' */
346	for (cp = &el->el_search.patbuf[el->el_search.patlen-1],
347	ch = ']';
348	cp >= &el->el_search.patbuf[LEN];
349	cp--)
350	if (cp == '[' \|\| cp == ']') {
351	ch = *cp;
352	break;
353	}
354	if (el->el_search.patlen > LEN && ch != '[') {
355	if (redo && newdir == dir) {
356	if (pchar == '?') { /* wrap around */
357	el->el_history.eventno =
358	newdir == ED_SEARCH_PREV_HISTORY ? 0 : 0x7fffffff;
359	if (hist_get(el) == CC_ERROR)
360	/* el->el_history.event
361	* no was fixed by
362	* first call */
363	(void) hist_get(el);
364	el->el_line.cursor = newdir ==
365	ED_SEARCH_PREV_HISTORY ?
366	el->el_line.lastchar :
367	el->el_line.buffer;
368	} else
369	el->el_line.cursor +=
370	newdir ==
371	ED_SEARCH_PREV_HISTORY ?
372	-1 : 1;
373	}
374	#ifdef ANCHOR
375	el->el_search.patbuf[el->el_search.patlen++] =
376	'.';
377	el->el_search.patbuf[el->el_search.patlen++] =
378	'*';
379	#endif
380	el->el_search.patbuf[el->el_search.patlen] =
381	'\0';
382	if (el->el_line.cursor < el->el_line.buffer \|\|
383	el->el_line.cursor > el->el_line.lastchar \|\|
384	(ret = ce_search_line(el, newdir))
385	== CC_ERROR) {
386	/* avoid c_setpat */
387	el->el_state.lastcmd =
388	(el_action_t) newdir;
389	ret = newdir == ED_SEARCH_PREV_HISTORY ?
390	ed_search_prev_history(el, 0) :
391	ed_search_next_history(el, 0);
392	if (ret != CC_ERROR) {
393	el->el_line.cursor = newdir ==
394	ED_SEARCH_PREV_HISTORY ?
395	el->el_line.lastchar :
396	el->el_line.buffer;
397	(void) ce_search_line(el,
398	newdir);
399	}
400	}
401	el->el_search.patlen -= LEN;
402	el->el_search.patbuf[el->el_search.patlen] =
403	'\0';
404	if (ret == CC_ERROR) {
405	term_beep(el);
406	if (el->el_history.eventno !=
407	ohisteventno) {
408	el->el_history.eventno =
409	ohisteventno;
410	if (hist_get(el) == CC_ERROR)
411	return (CC_ERROR);
412	}
413	el->el_line.cursor = ocursor;
414	pchar = '?';
415	} else {
416	pchar = ':';
417	}
418	}
419	ret = ce_inc_search(el, newdir);
420
421	if (ret == CC_ERROR && pchar == '?' && oldpchar == ':')
422	/*
423	* break abort of failed search at last
424	* non-failed
425	*/
426	ret = CC_NORM;
427
428	}
429	if (ret == CC_NORM \|\| (ret == CC_ERROR && oldpatlen == 0)) {
430	/* restore on normal return or error exit */
431	pchar = oldpchar;
432	el->el_search.patlen = oldpatlen;
433	if (el->el_history.eventno != ohisteventno) {
434	el->el_history.eventno = ohisteventno;
435	if (hist_get(el) == CC_ERROR)
436	return (CC_ERROR);
437	}
438	el->el_line.cursor = ocursor;
439	if (ret == CC_ERROR)
440	re_refresh(el);
441	}
442	if (done \|\| ret != CC_NORM)
443	return (ret);
444	}
445	}
446
447
448	/* cv_search():
449	* Vi search.
450	*/
451	protected el_action_t
452	cv_search(EditLine *el, int dir)
453	{
454	Char ch;
455	Char tmpbuf[EL_BUFSIZ];
456	int tmplen;
457
458	#ifdef ANCHOR
459	tmpbuf[0] = '.';
460	tmpbuf[1] = '*';
461	#endif
462	tmplen = LEN;
463
464	el->el_search.patdir = dir;
465
466	tmplen = c_gets(el, &tmpbuf[LEN],
467	dir == ED_SEARCH_PREV_HISTORY ? STR("\n/") : STR("\n?") );
468	if (tmplen == -1)
469	return CC_REFRESH;
470
471	tmplen += LEN;
472	ch = tmpbuf[tmplen];
473	tmpbuf[tmplen] = '\0';
474
475	if (tmplen == LEN) {
476	/*
477	* Use the old pattern, but wild-card it.
478	*/
479	if (el->el_search.patlen == 0) {
480	re_refresh(el);
481	return (CC_ERROR);
482	}
483	#ifdef ANCHOR
484	if (el->el_search.patbuf[0] != '.' &&
485	el->el_search.patbuf[0] != '*') {
486	(void) Strncpy(tmpbuf, el->el_search.patbuf,
487	sizeof(tmpbuf) / sizeof(*tmpbuf) - 1);
488	el->el_search.patbuf[0] = '.';
489	el->el_search.patbuf[1] = '*';
490	(void) Strncpy(&el->el_search.patbuf[2], tmpbuf,
491	EL_BUFSIZ - 3);
492	el->el_search.patlen++;
493	el->el_search.patbuf[el->el_search.patlen++] = '.';
494	el->el_search.patbuf[el->el_search.patlen++] = '*';
495	el->el_search.patbuf[el->el_search.patlen] = '\0';
496	}
497	#endif
498	} else {
499	#ifdef ANCHOR
500	tmpbuf[tmplen++] = '.';
501	tmpbuf[tmplen++] = '*';
502	#endif
503	tmpbuf[tmplen] = '\0';
504	(void) Strncpy(el->el_search.patbuf, tmpbuf, EL_BUFSIZ - 1);
505	el->el_search.patlen = tmplen;
506	}
507	el->el_state.lastcmd = (el_action_t) dir; /* avoid c_setpat */
508	el->el_line.cursor = el->el_line.lastchar = el->el_line.buffer;
509	if ((dir == ED_SEARCH_PREV_HISTORY ? ed_search_prev_history(el, 0) :
510	ed_search_next_history(el, 0)) == CC_ERROR) {
511	re_refresh(el);
512	return (CC_ERROR);
513	}
514	if (ch == 0033) {
515	re_refresh(el);
516	return ed_newline(el, 0);
517	}
518	return (CC_REFRESH);
519	}
520
521
522	/* ce_search_line():
523	* Look for a pattern inside a line
524	*/
525	protected el_action_t
526	ce_search_line(EditLine *el, int dir)
527	{
528	Char *cp = el->el_line.cursor;
529	Char *pattern = el->el_search.patbuf;
530	Char oc, *ocp;
531	#ifdef ANCHOR
532	ocp = &pattern[1];
533	oc = *ocp;
534	*ocp = '^';
535	#else
536	ocp = pattern;
537	oc = *ocp;
538	#endif
539
540	if (dir == ED_SEARCH_PREV_HISTORY) {
541	for (; cp >= el->el_line.buffer; cp--) {
542	if (el_match(cp, ocp)) {
543	*ocp = oc;
544	el->el_line.cursor = cp;
545	return (CC_NORM);
546	}
547	}
548	*ocp = oc;
549	return (CC_ERROR);
550	} else {
551	for (; *cp != '\0' && cp < el->el_line.limit; cp++) {
552	if (el_match(cp, ocp)) {
553	*ocp = oc;
554	el->el_line.cursor = cp;
555	return (CC_NORM);
556	}
557	}
558	*ocp = oc;
559	return (CC_ERROR);
560	}
561	}
562
563
564	/* cv_repeat_srch():
565	* Vi repeat search
566	*/
567	protected el_action_t
568	cv_repeat_srch(EditLine *el, Int c)
569	{
570
571	#ifdef SDEBUG
572	(void) fprintf(el->el_errfile, "dir %d patlen %d patbuf %s\n",
573	c, el->el_search.patlen, ct_encode_string(el->el_search.patbuf));
574	#endif
575
576	el->el_state.lastcmd = (el_action_t) c; /* Hack to stop c_setpat */
577	el->el_line.lastchar = el->el_line.buffer;
578
579	switch (c) {
580	case ED_SEARCH_NEXT_HISTORY:
581	return (ed_search_next_history(el, 0));
582	case ED_SEARCH_PREV_HISTORY:
583	return (ed_search_prev_history(el, 0));
584	default:
585	return (CC_ERROR);
586	}
587	}
588
589
590	/* cv_csearch():
591	* Vi character search
592	*/
593	protected el_action_t
594	cv_csearch(EditLine *el, int direction, Int ch, int count, int tflag)
595	{
596	Char *cp;
597
598	if (ch == 0)
599	return CC_ERROR;
600
601	if (ch == -1) {
602	Char c;
603	if (FUN(el,getc)(el, &c) != 1)
604	return ed_end_of_file(el, 0);
605	ch = c;
606	}
607
608	/* Save for ';' and ',' commands */
609	el->el_search.chacha = ch;
610	el->el_search.chadir = direction;
611	el->el_search.chatflg = tflag;
612
613	cp = el->el_line.cursor;
614	while (count--) {
615	if (*cp == ch)
616	cp += direction;
617	for (;;cp += direction) {
618	if (cp >= el->el_line.lastchar)
619	return CC_ERROR;
620	if (cp < el->el_line.buffer)
621	return CC_ERROR;
622	if (*cp == ch)
623	break;
624	}
625	}
626
627	if (tflag)
628	cp -= direction;
629
630	el->el_line.cursor = cp;
631
632	if (el->el_chared.c_vcmd.action != NOP) {
633	if (direction > 0)
634	el->el_line.cursor++;
635	cv_delfini(el);
636	return CC_REFRESH;
637	}
638	return CC_CURSOR;
639	}