Class SimilarToRegex

src/common/SimilarToRegex.h:40–88

};

class SimilarToRegex : public PermanentStorage
{
public:
	struct MatchPos
	{
		unsigned start;
		unsigned length;
	};

public:
	SimilarToRegex(MemoryPool& pool, unsigned flags,
		const char* patternStr, unsigned patternLen, const char* escapeStr, unsigned escapeLen);
	~SimilarToRegex();

public:
	static bool isSpecialChar(ULONG c)
	{
		switch (c)
		{
			case '^':
			case '-':
			case '_':
			case '%':
			case '[':
			case ']':
			case '(':
			case ')':
			case '{':
			case '}':
			case '|':
			case '?':
			case '+':
			case '*':
				return true;
		}

		return false;
	}

private:
	static void finalize(SimilarToRegex* self);

public:
	bool matches(const char* buffer, unsigned bufferLen, Array<MatchPos>* matchPosArray = nullptr);

private:
	MemoryPool::Finalizer* finalizer = nullptr;
	AutoPtr<re2::RE2> regexp;
};

// Given a regular expression R1<escape>#R2#<escape>R3 and the string S:
// - Find the shortest substring of S that matches R1 while the remainder (S23) matches R2R3;