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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2012 ChrisTX <chris@rev-crew.info>
*
* This file is part of InspIRCd. InspIRCd 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, version 2.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "inspircd.h"
#include "m_regex.h"
#include <regex>
/* $ModDesc: Regex Provider Module for std::regex Regular Expressions */
/* $ModConfig: <stdregex type="ecmascript">
* Specify the Regular Expression engine to use here. Valid settings are
* bre, ere, awk, grep, egrep, ecmascript (default if not specified)*/
/* $CompileFlags: -std=c++11 */
/* $ModDep: m_regex.h */
class StdRegexException : public ModuleException
{
public:
StdRegexException(const std::string& rx, const std::string& error)
: ModuleException(std::string("Error in regex ") + rx + ": " + error)
{
}
};
class StdRegex : public Regex
{
private:
std::regex regexcl;
public:
StdRegex(const std::string& rx, std::regex::flag_type fltype) : Regex(rx)
{
try{
regexcl.assign(rx, fltype | std::regex::optimize);
}
catch(std::regex_error rxerr)
{
throw StdRegexException(rx, rxerr.what());
}
}
virtual bool Matches(const std::string& text)
{
return std::regex_search(text, regexcl);
}
};
class StdRegexFactory : public RegexFactory
{
public:
std::regex::flag_type regextype;
StdRegexFactory(Module* m) : RegexFactory(m, "regex/stdregex") {}
Regex* Create(const std::string& expr)
{
return new StdRegex(expr, regextype);
}
};
class ModuleRegexStd : public Module
{
public:
StdRegexFactory ref;
ModuleRegexStd() : ref(this) {
ServerInstance->Modules->AddService(ref);
Implementation eventlist[] = { I_OnRehash };
ServerInstance->Modules->Attach(eventlist, this, 1);
OnRehash(NULL);
}
Version GetVersion()
{
return Version("Regex Provider Module for std::regex", VF_VENDOR);
}
void OnRehash(User* u)
{
ConfigTag* Conf = ServerInstance->Config->ConfValue("stdregex");
std::string regextype = Conf->getString("type", "ecmascript");
if(regextype == "bre")
ref.regextype = std::regex::basic;
else if(regextype == "ere")
ref.regextype = std::regex::extended;
else if(regextype == "awk")
ref.regextype = std::regex::awk;
else if(regextype == "grep")
ref.regextype = std::regex::grep;
else if(regextype == "egrep")
ref.regextype = std::regex::egrep;
else
{
if(regextype != "ecmascript")
ServerInstance->SNO->WriteToSnoMask('a', "WARNING: Non-existent regex engine '%s' specified. Falling back to ECMAScript.", regextype.c_str());
ref.regextype = std::regex::ECMAScript;
}
}
};
MODULE_INIT(ModuleRegexStd)
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