Method search

modules/regex/regex.cpp:215–279

}

Ref<RegExMatch> RegEx::search(const String &p_subject, int p_offset, int p_end) const {
	ERR_FAIL_COND_V(!is_valid(), nullptr);
	ERR_FAIL_COND_V_MSG(p_offset < 0, nullptr, "RegEx search offset must be >= 0");

	Ref<RegExMatch> result = memnew(RegExMatch);

	int length = p_subject.length();
	if (p_end >= 0 && p_end < length) {
		length = p_end;
	}

	pcre2_code_32 *c = (pcre2_code_32 *)code;
	pcre2_general_context_32 *gctx = (pcre2_general_context_32 *)general_ctx;
	pcre2_match_context_32 *mctx = pcre2_match_context_create_32(gctx);
	PCRE2_SPTR32 s = (PCRE2_SPTR32)p_subject.get_data();

	pcre2_match_data_32 *match = pcre2_match_data_create_from_pattern_32(c, gctx);

	int res = pcre2_match_32(c, s, length, p_offset, 0, match, mctx);

	if (res < 0) {
		pcre2_match_data_free_32(match);
		pcre2_match_context_free_32(mctx);

		return nullptr;
	}

	uint32_t size = pcre2_get_ovector_count_32(match);
	PCRE2_SIZE *ovector = pcre2_get_ovector_pointer_32(match);

	result->data.resize(size);

	for (uint32_t i = 0; i < size; i++) {
		result->data.write[i].start = ovector[i * 2];
		result->data.write[i].end = ovector[i * 2 + 1];
	}

	pcre2_match_data_free_32(match);
	pcre2_match_context_free_32(mctx);

	result->subject = p_subject;

	uint32_t count;
	const char32_t *table;
	uint32_t entry_size;

	_pattern_info(PCRE2_INFO_NAMECOUNT, &count);
	_pattern_info(PCRE2_INFO_NAMETABLE, &table);
	_pattern_info(PCRE2_INFO_NAMEENTRYSIZE, &entry_size);

	for (uint32_t i = 0; i < count; i++) {
		char32_t id = table[i * entry_size];
		if (result->data[id].start == -1) {
			continue;
		}
		String name = &table[i * entry_size + 1];
		if (result->names.has(name)) {
			continue;