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41 results

regex-match.c

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  • regex-match.c 3.11 KiB
    /*
     * $Id: regex-match.c,v 1.7 1993/10/14 09:11:33 ceder Exp $
     * Copyright (C) 1992  Lysator Academic Computer Association.
     *
     * This file is part of the LysKOM server.
     * 
     * LysKOM is free software; you can redistribute it and/or modify it
     * under the terms of the GNU General Public License as published by 
     * the Free Software Foundation; either version 1, or (at your option) 
     * any later version.
     * 
     * LysKOM is distributed in the hope that it will be useful, but WITHOUT
     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
     * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
     * for more details.
     * 
     * You should have received a copy of the GNU General Public License
     * along with LysKOM; see the file COPYING.  If not, write to
     * Lysator, c/o ISY, Linkoping University, S-581 83 Linkoping, SWEDEN,
     * or the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, 
     * MA 02139, USA.
     *
     * Please mail bug reports to bug-lyskom@lysator.liu.se. 
     */
    
    /*
     * Regexp matching
     */
    
    static char *rcsid = "$Id: regex-match.c,v 1.7 1993/10/14 09:11:33 ceder Exp $";
    #include "rcs.h"
    USE(rcsid);
    
    #include <stdio.h>
    #include <setjmp.h>
    #include <sys/types.h>
    #ifdef HAVE_STDARG_H
    #  include <stdarg.h>
    #endif
    
    #include "s-string.h"
    #include "misc-types.h"
    #include "kom-types.h"
    #include "services.h"
    #include "regex.h"
    #include "server/smalloc.h"
    #include "cache.h"
    #include "kom-errno.h"
    #include "com.h"
    #include "connections.h"
    #include "manipulate.h"
    #include "log.h"
    
    static Success
    lookup_regexp (const String  regexp,
    	       Conf_no_list  *result,
    	       Bool	     want_persons)
    {
        struct re_pattern_buffer pat_buf;
        Conf_no conf_no;
        String name = EMPTY_STRING;
        const char *errmsg;
    
        /* +++ Unnecessary to allocate this much if only one conference matches. */
        result->conf_nos = tmp_alloc (cached_no_of_existing_conferences()
    				  * sizeof(Conf_no));
        result->no_of_confs = 0;
    
        re_syntax_options = RE_SYNTAX_GREP;
    
        pat_buf.translate = swedish_collate_tab;
        pat_buf.translate = NULL;
        pat_buf.fastmap = 0;
        pat_buf.allocated = 0;
        pat_buf.buffer = 0;
    
        if ((errmsg =
    	 re_compile_pattern(regexp.string, s_strlen(regexp), &pat_buf))
    	!= NULL)
        {
    	regfree(&pat_buf);
    	kom_errno = KOM_REGEX_ERROR;
    	return FAILURE;
        }
    
        for (conf_no = 0; (conf_no = traverse_conference(conf_no)) != 0;)
        {
    	if (cached_get_conf_type(conf_no).letter_box == want_persons
    	    &&  fast_access_perm (conf_no, ACTPERS, ACT_P) > none )
    	{
    	    name = cached_get_name(conf_no);
    	    switch ( re_search (&pat_buf, name.string, s_strlen(name), 0,
    				s_strlen(name), NULL) )
    	    {
    	    case -1:
    		break;
    	    case -2:
    		log("Internal error in regex.");
    		break;
    	    default:
    		/* It matched. (Ignore where it matched). */
    		result->conf_nos[result->no_of_confs++] = conf_no;
    		break;
    	    }
    	}
        }
    
        regfree(&pat_buf);
    
        return OK;
    }
    
    Success
    re_lookup_person (const String  regexp,
    		  Conf_no_list  *result)
    {
        return lookup_regexp(regexp, result, TRUE);
    }
    
    
    Success
    re_lookup_conf (const String  regexp,
    		Conf_no_list  *result)
    {
        return lookup_regexp(regexp, result, FALSE);
    }