1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/extensions/regex/CRegEx.cpp	Sun Jul 06 04:49:55 2008 +0000
     1.3 @@ -0,0 +1,155 @@
     1.4 +/**
     1.5 + * vim: set ts=4 :
     1.6 + * =============================================================================
     1.7 + * SourceMod Regular Expressions Extension
     1.8 + * Copyright (C) 2004-2008 AlliedModders LLC.  All rights reserved.
     1.9 + * =============================================================================
    1.10 + *
    1.11 + * This program is free software; you can redistribute it and/or modify it under
    1.12 + * the terms of the GNU General Public License, version 3.0, as published by the
    1.13 + * Free Software Foundation.
    1.14 + * 
    1.15 + * This program is distributed in the hope that it will be useful, but WITHOUT
    1.16 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    1.17 + * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
    1.18 + * details.
    1.19 + *
    1.20 + * You should have received a copy of the GNU General Public License along with
    1.21 + * this program.  If not, see <http://www.gnu.org/licenses/>.
    1.22 + *
    1.23 + * As a special exception, AlliedModders LLC gives you permission to link the
    1.24 + * code of this program (as well as its derivative works) to "Half-Life 2," the
    1.25 + * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
    1.26 + * by the Valve Corporation.  You must obey the GNU General Public License in
    1.27 + * all respects for all other code used.  Additionally, AlliedModders LLC grants
    1.28 + * this exception to all derivative works.  AlliedModders LLC defines further
    1.29 + * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
    1.30 + * or <http://www.sourcemod.net/license.php>.
    1.31 + *
    1.32 + * Version: $Id$
    1.33 + */
    1.34 +
    1.35 +#include "pcre.h"
    1.36 +#include "CRegEx.h"
    1.37 +#include <sh_string.h>
    1.38 +#include "extension.h"
    1.39 +
    1.40 +RegEx::RegEx()
    1.41 +{
    1.42 +	mErrorOffset = 0;
    1.43 +	mError = NULL;
    1.44 +	re = NULL;
    1.45 +	mFree = true;
    1.46 +	subject = NULL;
    1.47 +	mSubStrings = 0;
    1.48 +}
    1.49 +
    1.50 +void RegEx::Clear ()
    1.51 +{
    1.52 +	mErrorOffset = 0;
    1.53 +	mError = NULL;
    1.54 +	if (re)
    1.55 +		pcre_free(re);
    1.56 +	re = NULL;
    1.57 +	mFree = true;
    1.58 +	if (subject)
    1.59 +		delete [] subject;
    1.60 +	subject = NULL;
    1.61 +	mSubStrings = 0;
    1.62 +}
    1.63 +
    1.64 +RegEx::~RegEx()
    1.65 +{
    1.66 +	Clear();
    1.67 +}
    1.68 +
    1.69 +bool RegEx::isFree(bool set, bool val)
    1.70 +{
    1.71 +	if (set)
    1.72 +	{
    1.73 +		mFree = val;
    1.74 +		return true;
    1.75 +	} else {
    1.76 +		return mFree;
    1.77 +	}
    1.78 +}
    1.79 +
    1.80 +int RegEx::Compile(const char *pattern, int iFlags)
    1.81 +{
    1.82 +	if (!mFree)
    1.83 +		Clear();
    1.84 +		
    1.85 +	re = pcre_compile(pattern, iFlags, &mError, &mErrorOffset, NULL);
    1.86 +
    1.87 +	if (re == NULL)
    1.88 +	{
    1.89 +		return 0;
    1.90 +	}
    1.91 +
    1.92 +	mFree = false;
    1.93 +
    1.94 +	return 1;
    1.95 +}
    1.96 +
    1.97 +int RegEx::Match(const char *str)
    1.98 +{
    1.99 +	int rc = 0;
   1.100 +
   1.101 +	if (mFree || re == NULL)
   1.102 +		return -1;
   1.103 +		
   1.104 +	this->ClearMatch();
   1.105 +
   1.106 +	//save str
   1.107 +	subject = new char[strlen(str)+1];
   1.108 +	strcpy(subject, str);
   1.109 +
   1.110 +	rc = pcre_exec(re, NULL, subject, (int)strlen(subject), 0, 0, ovector, 30);
   1.111 +
   1.112 +	if (rc < 0)
   1.113 +	{
   1.114 +		if (rc == PCRE_ERROR_NOMATCH)
   1.115 +		{
   1.116 +			return 0;
   1.117 +		} else {
   1.118 +			mErrorOffset = rc;
   1.119 +			return -1;
   1.120 +		}
   1.121 +	}
   1.122 +
   1.123 +	mSubStrings = rc;
   1.124 +
   1.125 +	return 1;
   1.126 +}
   1.127 +void RegEx::ClearMatch()
   1.128 +{
   1.129 +	// Clears match results
   1.130 +	mErrorOffset = 0;
   1.131 +	mError = NULL;
   1.132 +	if (subject)
   1.133 +		delete [] subject;
   1.134 +	subject = NULL;
   1.135 +	mSubStrings = 0;
   1.136 +}
   1.137 +
   1.138 +const char *RegEx::GetSubstring(int s, char buffer[], int max)
   1.139 +{
   1.140 +	int i = 0;
   1.141 +	if (s >= mSubStrings || s < 0)
   1.142 +		return NULL;
   1.143 +
   1.144 +	char *substr_a = subject + ovector[2*s];
   1.145 +	int substr_l = ovector[2*s+1] - ovector[2*s];
   1.146 +
   1.147 +	for (i = 0; i<substr_l; i++)
   1.148 +	{
   1.149 +		if (i >= max)
   1.150 +			break;
   1.151 +		buffer[i] = substr_a[i];
   1.152 +	}
   1.153 +
   1.154 +	buffer[i] = '\0';
   1.155 +
   1.156 +	return buffer;
   1.157 +}
   1.158 +