1 files changed, 107 insertions, 0 deletions
diff --git a/modules/regex_stdlib.cpp b/modules/regex_stdlib.cpp
new file mode 100644
index 000000000..0ef7e3f81
--- /dev/null
+++ b/modules/regex_stdlib.cpp
@@ -0,0 +1,107 @@
+/*
+ *
+ * (C) 2012-2024 Anope Team
+ * Contact us at team@anope.org
+ *
+ * Please read COPYING and README for further details.
+ */
+
+#include "module.h"
+
+#include <regex>
+
+class StdLibRegex final
+	: public Regex
+{
+private:
+	std::regex regex;
+
+public:
+	StdLibRegex(const Anope::string &expr, std::regex::flag_type type)
+		: Regex(expr)
+	{
+		try
+		{
+			regex.assign(expr.str(), type | std::regex::optimize);
+		}
+		catch (const std::regex_error &error)
+		{
+			throw RegexException("Error in regex " + expr + ": " + error.what());
+		}
+	}
+
+	bool Matches(const Anope::string &str)
+	{
+		return std::regex_search(str.str(), regex);
+	}
+};
+
+class StdLibRegexProvider final
+	: public RegexProvider
+{
+public:
+	std::regex_constants::syntax_option_type type;
+
+	StdLibRegexProvider(Module *creator)
+		: RegexProvider(creator, "regex/stdlib")
+	{
+	}
+
+	Regex *Compile(const Anope::string &expression) override
+	{
+		return new StdLibRegex(expression, type);
+	}
+};
+
+class ModuleRegexStdLib final
+	: public Module
+{
+private:
+	StdLibRegexProvider stdlib_regex_provider;
+
+public:
+	ModuleRegexStdLib(const Anope::string &modname, const Anope::string &creator)
+		: Module(modname, creator, EXTRA | VENDOR)
+		, stdlib_regex_provider(this)
+	{
+		this->SetPermanent(true);
+	}
+
+	void OnReload(Configuration::Conf *conf) override
+	{
+		Configuration::Block *block = conf->GetModule(this);
+
+		const Anope::string syntax = block->Get<const Anope::string>("syntax", "ecmascript");
+		if (syntax == "awk")
+			stdlib_regex_provider.type = std::regex::awk;
+		else if (syntax == "basic")
+			stdlib_regex_provider.type = std::regex::basic;
+		else if (syntax == "ecmascript")
+			stdlib_regex_provider.type = std::regex::ECMAScript;
+		else if (syntax == "egrep")
+			stdlib_regex_provider.type = std::regex::egrep;
+		else if (syntax == "extended")
+			stdlib_regex_provider.type = std::regex::extended;
+		else if (syntax == "grep")
+			stdlib_regex_provider.type = std::regex::grep;
+		else
+			throw ConfigException(this->name + ": syntax must be set to awk, basic, ecmascript, egrep, extended, or grep.");
+	}
+
+	~ModuleRegexStdLib()
+	{
+		for (auto *xlm : XLineManager::XLineManagers)
+		{
+			for (auto *x : xlm->GetList())
+			{
+				if (x->regex && dynamic_cast<StdLibRegex *>(x->regex))
+				{
+					delete x->regex;
+					x->regex = NULL;
+				}
+			}
+		}
+	}
+};
+
+MODULE_INIT(ModuleRegexStdLib)