/*       +------------------------------------+
 *       | 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 "m_regex.h"
#include "inspircd.h"

/* $ModDesc: Regex module using plain wildcard matching. */

class GlobRegex : public Regex
{
	unsigned const char* map;
	bool irc_lowercase, spaces_to_underscores;
public:
	GlobRegex(const std::string& rx, RegexFlags flags) : Regex(rx)
	{
		if(flags & REGEX_CASE_INSENSITIVE)
			map = ascii_case_insensitive_map;
		else
			map = rfc_case_sensitive_map;
		irc_lowercase = flags & REGEX_IRC_LOWERCASE;
		spaces_to_underscores = flags & REGEX_SPACES_TO_UNDERSCORES;
	}

	virtual ~GlobRegex()
	{
	}

	virtual bool Matches(const std::string& text)
	{
		std::string matchtext(irc_lowercase ? irc::irc_char_traits::remap(text) : text);
		if(spaces_to_underscores)
		{
			for(std::string::iterator i = matchtext.begin(); i != matchtext.end(); ++i)
				if(*i == ' ')
					*i = '_';
		}
		return InspIRCd::Match(matchtext, this->regex_string, map);
	}
};

class GlobFactory : public RegexFactory
{
 public:
	Regex* Create(const std::string& expr, RegexFlags flags)
	{
		return new GlobRegex(expr, flags);
	}

	GlobFactory(Module* m) : RegexFactory(m, "regex/glob") {}
};

class ModuleRegexGlob : public Module
{
	GlobFactory gf;
public:
	ModuleRegexGlob() : gf(this)
	{
	}

	void init()
	{
		ServerInstance->Modules->AddService(gf);
	}

	void Prioritize()
	{
		// we are a pure service provider, init us first
		ServerInstance->Modules->SetPriority(this, I_ModuleInit, PRIORITY_FIRST);
	}

	Version GetVersion()
	{
		return Version("Regex module using plain wildcard matching.", VF_VENDOR);
	}
};

MODULE_INIT(ModuleRegexGlob)