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633 lines
15 KiB
C
633 lines
15 KiB
C
/*-
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Christos Zoulas of Cornell University.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#if !defined(lint) && !defined(SCCSID)
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static char sccsid[] = "@(#)search.c 8.1 (Berkeley) 6/4/93";
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#endif /* not lint && not SCCSID */
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/*
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* search.c: History and character search functions
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*/
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#include "sys.h"
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#include <stdlib.h>
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#if defined(REGEX)
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#include <regex.h>
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#elif defined(REGEXP)
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#include <regexp.h>
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#endif
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#include "el.h"
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/*
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* Adjust cursor in vi mode to include the character under it
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*/
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#define EL_CURSOR(el) \
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((el)->el_line.cursor + (((el)->el_map.type == MAP_VI) && \
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((el)->el_map.current == (el)->el_map.alt)))
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/* search_init():
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* Initialize the search stuff
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*/
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protected int
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search_init(el)
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EditLine *el;
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{
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el->el_search.patbuf = (char *) el_malloc(EL_BUFSIZ);
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el->el_search.patlen = 0;
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el->el_search.patdir = -1;
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el->el_search.chacha = '\0';
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el->el_search.chadir = -1;
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return 0;
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}
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/* search_end():
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* Initialize the search stuff
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*/
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protected void
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search_end(el)
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EditLine *el;
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{
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el_free((ptr_t) el->el_search.patbuf);
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el->el_search.patbuf = NULL;
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}
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#ifdef REGEXP
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/* regerror():
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* Handle regular expression errors
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*/
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public void
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/*ARGSUSED*/
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regerror(msg)
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const char *msg;
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{
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}
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#endif
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/* el_match():
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* Return if string matches pattern
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*/
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protected int
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el_match(str, pat)
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const char *str;
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const char *pat;
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{
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#if defined (REGEX)
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regex_t re;
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int rv;
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#elif defined (REGEXP)
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regexp *rp;
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int rv;
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#else
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extern char *re_comp __P((const char *));
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extern int re_exec __P((const char *));
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#endif
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if (strstr(str, pat) != NULL)
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return 1;
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#if defined(REGEX)
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if (regcomp(&re, pat, 0) == 0) {
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rv = regexec(&re, str, 0, NULL, 0) == 0;
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regfree(&re);
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} else {
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rv = 0;
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}
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return rv;
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#elif defined(REGEXP)
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if ((re = regcomp(pat)) != NULL) {
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rv = regexec(re, str);
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free((ptr_t) re);
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} else {
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rv = 0;
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}
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return rv;
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#else
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if (re_comp(pat) != NULL)
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return 0;
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else
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return re_exec(str) == 1;
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#endif
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}
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/* c_hmatch():
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* return True if the pattern matches the prefix
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*/
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protected int
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c_hmatch(el, str)
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EditLine *el;
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const char *str;
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{
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#ifdef SDEBUG
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(void) fprintf(el->el_errfile, "match `%s' with `%s'\n",
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el->el_search.patbuf, str);
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#endif /* SDEBUG */
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return el_match(str, el->el_search.patbuf);
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}
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/* c_setpat():
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* Set the history seatch pattern
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*/
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protected void
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c_setpat(el)
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EditLine *el;
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{
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if (el->el_state.lastcmd != ED_SEARCH_PREV_HISTORY &&
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el->el_state.lastcmd != ED_SEARCH_NEXT_HISTORY) {
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el->el_search.patlen = EL_CURSOR(el) - el->el_line.buffer;
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if (el->el_search.patlen >= EL_BUFSIZ)
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el->el_search.patlen = EL_BUFSIZ -1;
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if (el->el_search.patlen >= 0) {
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(void) strncpy(el->el_search.patbuf, el->el_line.buffer,
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el->el_search.patlen);
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el->el_search.patbuf[el->el_search.patlen] = '\0';
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}
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else
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el->el_search.patlen = strlen(el->el_search.patbuf);
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}
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#ifdef SDEBUG
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(void) fprintf(el->el_errfile, "\neventno = %d\n", el->el_history.eventno);
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(void) fprintf(el->el_errfile, "patlen = %d\n", el->el_search.patlen);
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(void) fprintf(el->el_errfile, "patbuf = \"%s\"\n", el->el_search.patbuf);
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(void) fprintf(el->el_errfile, "cursor %d lastchar %d\n",
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EL_CURSOR(el) - el->el_line.buffer,
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el->el_line.lastchar - el->el_line.buffer);
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#endif
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}
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/* ce_inc_search():
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* Emacs incremental search
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*/
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protected el_action_t
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ce_inc_search(el, dir)
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EditLine *el;
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int dir;
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{
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static char STRfwd[] = { 'f', 'w', 'd', '\0' },
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STRbck[] = { 'b', 'c', 'k', '\0' };
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static char pchar = ':'; /* ':' = normal, '?' = failed */
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static char endcmd[2] = { '\0', '\0' };
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char ch, *cp, *ocursor = el->el_line.cursor, oldpchar = pchar;
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el_action_t ret = CC_NORM;
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int ohisteventno = el->el_history.eventno,
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oldpatlen = el->el_search.patlen,
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newdir = dir,
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done, redo;
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if (el->el_line.lastchar + sizeof(STRfwd) / sizeof(char) + 2 +
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el->el_search.patlen >= el->el_line.limit)
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return CC_ERROR;
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for (;;) {
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if (el->el_search.patlen == 0) { /* first round */
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pchar = ':';
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#ifdef ANCHOR
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el->el_search.patbuf[el->el_search.patlen++] = '.';
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el->el_search.patbuf[el->el_search.patlen++] = '*';
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#endif
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}
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done = redo = 0;
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*el->el_line.lastchar++ = '\n';
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for (cp = newdir == ED_SEARCH_PREV_HISTORY ? STRbck : STRfwd;
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*cp; *el->el_line.lastchar++ = *cp++)
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continue;
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*el->el_line.lastchar++ = pchar;
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for (cp = &el->el_search.patbuf[1];
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cp < &el->el_search.patbuf[el->el_search.patlen];
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*el->el_line.lastchar++ = *cp++)
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continue;
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*el->el_line.lastchar = '\0';
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re_refresh(el);
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if (el_getc(el, &ch) != 1)
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return ed_end_of_file(el, 0);
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switch (el->el_map.current[(unsigned char) ch]) {
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case ED_INSERT:
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case ED_DIGIT:
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if (el->el_search.patlen > EL_BUFSIZ - 3)
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term_beep(el);
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else {
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el->el_search.patbuf[el->el_search.patlen++] = ch;
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*el->el_line.lastchar++ = ch;
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*el->el_line.lastchar = '\0';
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re_refresh(el);
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}
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break;
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case EM_INC_SEARCH_NEXT:
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newdir = ED_SEARCH_NEXT_HISTORY;
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redo++;
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break;
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case EM_INC_SEARCH_PREV:
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newdir = ED_SEARCH_PREV_HISTORY;
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redo++;
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break;
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case ED_DELETE_PREV_CHAR:
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if (el->el_search.patlen > 1)
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done++;
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else
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term_beep(el);
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break;
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default:
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switch (ch) {
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case 0007: /* ^G: Abort */
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ret = CC_ERROR;
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done++;
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break;
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case 0027: /* ^W: Append word */
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/* No can do if globbing characters in pattern */
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for (cp = &el->el_search.patbuf[1]; ; cp++)
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if (cp >= &el->el_search.patbuf[el->el_search.patlen]) {
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el->el_line.cursor += el->el_search.patlen - 1;
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cp = c__next_word(el->el_line.cursor,
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el->el_line.lastchar, 1, ce__isword);
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while (el->el_line.cursor < cp &&
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*el->el_line.cursor != '\n') {
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if (el->el_search.patlen > EL_BUFSIZ - 3) {
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term_beep(el);
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break;
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}
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el->el_search.patbuf[el->el_search.patlen++] =
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*el->el_line.cursor;
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*el->el_line.lastchar++ = *el->el_line.cursor++;
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}
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el->el_line.cursor = ocursor;
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*el->el_line.lastchar = '\0';
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re_refresh(el);
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break;
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} else if (isglob(*cp)) {
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term_beep(el);
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break;
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}
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break;
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default: /* Terminate and execute cmd */
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endcmd[0] = ch;
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el_push(el, endcmd);
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/*FALLTHROUGH*/
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case 0033: /* ESC: Terminate */
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ret = CC_REFRESH;
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done++;
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break;
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}
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break;
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}
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while (el->el_line.lastchar > el->el_line.buffer &&
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*el->el_line.lastchar != '\n')
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*el->el_line.lastchar-- = '\0';
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*el->el_line.lastchar = '\0';
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if (!done) {
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/* Can't search if unmatched '[' */
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for (cp = &el->el_search.patbuf[el->el_search.patlen-1], ch = ']';
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cp > el->el_search.patbuf; cp--)
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if (*cp == '[' || *cp == ']') {
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ch = *cp;
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break;
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}
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if (el->el_search.patlen > 1 && ch != '[') {
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if (redo && newdir == dir) {
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if (pchar == '?') { /* wrap around */
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el->el_history.eventno =
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newdir == ED_SEARCH_PREV_HISTORY ? 0 : 0x7fffffff;
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if (hist_get(el) == CC_ERROR)
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/* el->el_history.eventno was fixed by first call */
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(void) hist_get(el);
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el->el_line.cursor = newdir == ED_SEARCH_PREV_HISTORY ?
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el->el_line.lastchar : el->el_line.buffer;
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} else
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el->el_line.cursor +=
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newdir == ED_SEARCH_PREV_HISTORY ? -1 : 1;
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}
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#ifdef ANCHOR
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el->el_search.patbuf[el->el_search.patlen++] = '.';
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el->el_search.patbuf[el->el_search.patlen++] = '*';
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#endif
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el->el_search.patbuf[el->el_search.patlen] = '\0';
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if (el->el_line.cursor < el->el_line.buffer ||
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el->el_line.cursor > el->el_line.lastchar ||
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(ret = ce_search_line(el, &el->el_search.patbuf[1],
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newdir)) == CC_ERROR) {
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/* avoid c_setpat */
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el->el_state.lastcmd = (el_action_t) newdir;
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ret = newdir == ED_SEARCH_PREV_HISTORY ?
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ed_search_prev_history(el, 0) :
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ed_search_next_history(el, 0);
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if (ret != CC_ERROR) {
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el->el_line.cursor = newdir == ED_SEARCH_PREV_HISTORY ?
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el->el_line.lastchar : el->el_line.buffer;
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(void) ce_search_line(el, &el->el_search.patbuf[1],
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newdir);
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}
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}
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el->el_search.patbuf[--el->el_search.patlen] = '\0';
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if (ret == CC_ERROR) {
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term_beep(el);
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if (el->el_history.eventno != ohisteventno) {
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el->el_history.eventno = ohisteventno;
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if (hist_get(el) == CC_ERROR)
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return CC_ERROR;
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}
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el->el_line.cursor = ocursor;
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pchar = '?';
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} else {
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pchar = ':';
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}
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}
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ret = ce_inc_search(el, newdir);
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if (ret == CC_ERROR && pchar == '?' && oldpchar == ':')
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/* break abort of failed search at last non-failed */
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ret = CC_NORM;
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}
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if (ret == CC_NORM || (ret == CC_ERROR && oldpatlen == 0)) {
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/* restore on normal return or error exit */
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pchar = oldpchar;
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el->el_search.patlen = oldpatlen;
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if (el->el_history.eventno != ohisteventno) {
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el->el_history.eventno = ohisteventno;
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if (hist_get(el) == CC_ERROR)
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return CC_ERROR;
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}
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el->el_line.cursor = ocursor;
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if (ret == CC_ERROR)
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re_refresh(el);
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}
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if (done || ret != CC_NORM)
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return ret;
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}
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}
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/* cv_search():
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* Vi search.
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*/
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protected el_action_t
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cv_search(el, dir)
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EditLine *el;
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int dir;
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{
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char ch;
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char tmpbuf[EL_BUFSIZ];
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int tmplen;
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tmplen = 0;
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#ifdef ANCHOR
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tmpbuf[tmplen++] = '.';
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tmpbuf[tmplen++] = '*';
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#endif
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el->el_line.buffer[0] = '\0';
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el->el_line.lastchar = el->el_line.buffer;
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el->el_line.cursor = el->el_line.buffer;
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el->el_search.patdir = dir;
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c_insert(el, 2); /* prompt + '\n' */
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*el->el_line.cursor++ = '\n';
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*el->el_line.cursor++ = dir == ED_SEARCH_PREV_HISTORY ? '/' : '?';
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re_refresh(el);
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#ifdef ANCHOR
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# define LEN 2
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#else
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# define LEN 0
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#endif
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tmplen = c_gets(el, &tmpbuf[LEN]) + LEN;
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ch = tmpbuf[tmplen];
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tmpbuf[tmplen] = '\0';
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if (tmplen == LEN) {
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/*
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* Use the old pattern, but wild-card it.
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*/
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if (el->el_search.patlen == 0) {
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el->el_line.buffer[0] = '\0';
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el->el_line.lastchar = el->el_line.buffer;
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el->el_line.cursor = el->el_line.buffer;
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re_refresh(el);
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return CC_ERROR;
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}
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#ifdef ANCHOR
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if (el->el_search.patbuf[0] != '.' && el->el_search.patbuf[0] != '*') {
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(void)strncpy(tmpbuf, el->el_search.patbuf, sizeof(tmpbuf) - 1);
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el->el_search.patbuf[0] = '.';
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el->el_search.patbuf[1] = '*';
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(void)strncpy(&el->el_search.patbuf[2], tmpbuf, EL_BUFSIZ - 3);
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el->el_search.patlen++;
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el->el_search.patbuf[el->el_search.patlen++] = '.';
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el->el_search.patbuf[el->el_search.patlen++] = '*';
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el->el_search.patbuf[el->el_search.patlen] = '\0';
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}
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#endif
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}
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else {
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#ifdef ANCHOR
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tmpbuf[tmplen++] = '.';
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tmpbuf[tmplen++] = '*';
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#endif
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tmpbuf[tmplen] = '\0';
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(void)strncpy(el->el_search.patbuf, tmpbuf, EL_BUFSIZ - 1);
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el->el_search.patlen = tmplen;
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}
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el->el_state.lastcmd = (el_action_t) dir; /* avoid c_setpat */
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el->el_line.cursor = el->el_line.lastchar = el->el_line.buffer;
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if ((dir == ED_SEARCH_PREV_HISTORY ? ed_search_prev_history(el, 0) :
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ed_search_next_history(el, 0)) == CC_ERROR) {
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re_refresh(el);
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return CC_ERROR;
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}
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else {
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if (ch == 0033) {
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re_refresh(el);
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*el->el_line.lastchar++ = '\n';
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*el->el_line.lastchar = '\0';
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re_goto_bottom(el);
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|
return CC_NEWLINE;
|
|
}
|
|
else
|
|
return CC_REFRESH;
|
|
}
|
|
}
|
|
|
|
|
|
/* ce_search_line():
|
|
* Look for a pattern inside a line
|
|
*/
|
|
protected el_action_t
|
|
ce_search_line(el, pattern, dir)
|
|
EditLine *el;
|
|
char *pattern;
|
|
int dir;
|
|
{
|
|
char *cp;
|
|
|
|
if (dir == ED_SEARCH_PREV_HISTORY) {
|
|
for (cp = el->el_line.cursor; cp >= el->el_line.buffer; cp--)
|
|
if (el_match(cp, pattern)) {
|
|
el->el_line.cursor = cp;
|
|
return CC_NORM;
|
|
}
|
|
return CC_ERROR;
|
|
} else {
|
|
for (cp = el->el_line.cursor; *cp != '\0' &&
|
|
cp < el->el_line.limit; cp++)
|
|
if (el_match(cp, pattern)) {
|
|
el->el_line.cursor = cp;
|
|
return CC_NORM;
|
|
}
|
|
return CC_ERROR;
|
|
}
|
|
}
|
|
|
|
|
|
/* cv_repeat_srch():
|
|
* Vi repeat search
|
|
*/
|
|
protected el_action_t
|
|
cv_repeat_srch(el, c)
|
|
EditLine *el;
|
|
int c;
|
|
{
|
|
#ifdef SDEBUG
|
|
(void) fprintf(el->el_errfile, "dir %d patlen %d patbuf %s\n",
|
|
c, el->el_search.patlen, 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_back():
|
|
* Vi character search reverse
|
|
*/
|
|
protected el_action_t
|
|
cv_csearch_back(el, ch, count, tflag)
|
|
EditLine *el;
|
|
int ch, count, tflag;
|
|
{
|
|
char *cp;
|
|
|
|
cp = el->el_line.cursor;
|
|
while (count--) {
|
|
if (*cp == ch)
|
|
cp--;
|
|
while (cp > el->el_line.buffer && *cp != ch)
|
|
cp--;
|
|
}
|
|
|
|
if (cp < el->el_line.buffer || (cp == el->el_line.buffer && *cp != ch))
|
|
return CC_ERROR;
|
|
|
|
if (*cp == ch && tflag)
|
|
cp++;
|
|
|
|
el->el_line.cursor = cp;
|
|
|
|
if (el->el_chared.c_vcmd.action & DELETE) {
|
|
el->el_line.cursor++;
|
|
cv_delfini(el);
|
|
return CC_REFRESH;
|
|
}
|
|
|
|
re_refresh_cursor(el);
|
|
return CC_NORM;
|
|
}
|
|
|
|
|
|
/* cv_csearch_fwd():
|
|
* Vi character search forward
|
|
*/
|
|
protected el_action_t
|
|
cv_csearch_fwd(el, ch, count, tflag)
|
|
EditLine *el;
|
|
int ch, count, tflag;
|
|
{
|
|
char *cp;
|
|
|
|
cp = el->el_line.cursor;
|
|
while (count--) {
|
|
if(*cp == ch)
|
|
cp++;
|
|
while (cp < el->el_line.lastchar && *cp != ch)
|
|
cp++;
|
|
}
|
|
|
|
if (cp >= el->el_line.lastchar)
|
|
return CC_ERROR;
|
|
|
|
if (*cp == ch && tflag)
|
|
cp--;
|
|
|
|
el->el_line.cursor = cp;
|
|
|
|
if (el->el_chared.c_vcmd.action & DELETE) {
|
|
el->el_line.cursor++;
|
|
cv_delfini(el);
|
|
return CC_REFRESH;
|
|
}
|
|
re_refresh_cursor(el);
|
|
return CC_NORM;
|
|
}
|