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/*
*
* (C) 2012-2022 Anope Team
* Contact us at team@anope.org
*
* Please read COPYING and README for further details.
*/
/* RequiredLibraries: pcre2-8 */
/* RequiredWindowsLibraries: libpcre2-8 */
#include "module.h"
#define PCRE2_CODE_UNIT_WIDTH 8
#include <pcre2.h>
class PCRERegex : public Regex
{
pcre2_code *regex;
public:
PCRERegex(const Anope::string &expr) : Regex(expr)
{
int errcode;
PCRE2_SIZE erroffset;
this->regex = pcre2_compile(reinterpret_cast<PCRE2_SPTR8>(expr.c_str()), expr.length(), PCRE2_CASELESS, &errcode, &erroffset, NULL);
if (!this->regex)
{
PCRE2_UCHAR error[128];
pcre2_get_error_message(errcode, error, sizeof error);
throw RegexException("Error in regex " + expr + " at offset " + stringify(erroffset) + ": " + reinterpret_cast<const char*>(error));
}
}
~PCRERegex()
{
pcre2_code_free(this->regex);
}
bool Matches(const Anope::string &str)
{
pcre2_match_data *unused = pcre2_match_data_create_from_pattern(this->regex, NULL);
int result = pcre2_match(regex, reinterpret_cast<PCRE2_SPTR8>(str.c_str()), str.length(), 0, 0, unused, NULL);
pcre2_match_data_free(unused);
return result >= 0;
}
};
class PCRERegexProvider : public RegexProvider
{
public:
PCRERegexProvider(Module *creator) : RegexProvider(creator, "regex/pcre") { }
Regex *Compile(const Anope::string &expression) anope_override
{
return new PCRERegex(expression);
}
};
class ModuleRegexPCRE : public Module
{
PCRERegexProvider pcre_regex_provider;
public:
ModuleRegexPCRE(const Anope::string &modname, const Anope::string &creator) : Module(modname, creator, EXTRA | VENDOR),
pcre_regex_provider(this)
{
this->SetPermanent(true);
}
~ModuleRegexPCRE()
{
for (std::list<XLineManager *>::iterator it = XLineManager::XLineManagers.begin(); it != XLineManager::XLineManagers.end(); ++it)
{
XLineManager *xlm = *it;
const std::vector<XLine *> &xlines = xlm->GetList();
for (unsigned int i = 0; i < xlines.size(); ++i)
{
XLine *x = xlines[i];
if (x->regex && dynamic_cast<PCRERegex *>(x->regex))
{
delete x->regex;
x->regex = NULL;
}
}
}
}
};
MODULE_INIT(ModuleRegexPCRE)
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