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/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd: (C) 2002-2011 InspIRCd Development Team
* See: http://wiki.inspircd.org/Credits
*
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
#include "inspircd.h"
#include <pcre.h>
#include "m_regex.h"
/* $ModDesc: Regex Provider Module for PCRE */
/* $ModDep: m_regex.h */
/* $CompileFlags: exec("pcre-config --cflags") */
/* $LinkerFlags: exec("pcre-config --libs") rpath("pcre-config --libs") -lpcre */
#ifdef WINDOWS
#pragma comment(lib, "pcre.lib")
#endif
class PCREException : public ModuleException
{
public:
PCREException(const std::string& rx, const std::string& error, int erroffset)
: ModuleException(std::string("Error in regex ") + rx + " at offset " + ConvToStr(erroffset) + ": " + error)
{
}
};
class PCRERegex : public Regex
{
private:
pcre* regex;
RegexFlags flags;
public:
PCRERegex(const std::string& rx, RegexFlags reflags) : Regex(rx), flags(reflags)
{
const char* error;
int erroffset;
regex = pcre_compile(rx.c_str(), ((flags & REGEX_CASE_INSENSITIVE) ? PCRE_CASELESS : 0), &error, &erroffset, NULL);
if (!regex)
{
ServerInstance->Logs->Log("REGEX", DEBUG, "pcre_compile failed: /%s/ [%d] %s", rx.c_str(), erroffset, error);
throw PCREException(rx, error, erroffset);
}
}
virtual ~PCRERegex()
{
pcre_free(regex);
}
virtual bool Matches(const std::string& text)
{
std::string matchtext((flags & REGEX_IRC_LOWERCASE) ? irc::irc_char_traits::remap(text) : text);
if(flags & REGEX_SPACES_TO_UNDERSCORES)
for(std::string::iterator i = matchtext.begin(); i != matchtext.end(); ++i)
if(*i == ' ')
*i = '_';
return pcre_exec(regex, NULL, matchtext.c_str(), matchtext.length(), 0, 0, NULL, 0) > -1;
}
};
class PCREFactory : public RegexFactory
{
public:
PCREFactory(Module* m) : RegexFactory(m, "regex/pcre") {}
Regex* Create(const std::string& expr, RegexFlags flags)
{
return new PCRERegex(expr, flags);
}
};
class ModuleRegexPCRE : public Module
{
public:
PCREFactory ref;
ModuleRegexPCRE() : ref(this) {}
void init()
{
ServerInstance->Modules->AddService(ref);
}
void Prioritize()
{
// we are a pure service provider, init us first
ServerInstance->Modules->SetPriority(this, I_ModuleInit, PRIORITY_FIRST);
}
Version GetVersion()
{
return Version("Regex Provider Module for PCRE", VF_VENDOR);
}
};
MODULE_INIT(ModuleRegexPCRE)
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