Function DecoderResult Decode

czxing/src/main/cpp/zxing/src/aztec/AZDecoder.cpp:301–346

}

ZXING_EXPORT_TEST_ONLY
DecoderResult Decode(const BitArray& bits)
{
	Content res;
	res.symbology = {'z', '0', 3};

	try {
		DecodeContent(bits, res);
	} catch (const std::exception&) { // see BitArrayView::readBits
		return FormatError();
	}

	if (res.bytes.empty())
		return FormatError("Empty symbol content");

	// Check for Structured Append - need 4 5-bit words, beginning with ML UL, ending with index and count
	bool haveStructuredAppend = Size(bits) > 20 && ToInt(bits, 0, 5) == 29 // latch to MIXED (from UPPER)
								&& ToInt(bits, 5, 5) == 29;                // latch back to UPPER (from MIXED)

	StructuredAppendInfo sai = haveStructuredAppend ? ParseStructuredAppend(res.bytes) : StructuredAppendInfo();

	// As converting character set ECIs ourselves and ignoring/skipping non-character ECIs, not using
	// modifiers that indicate ECI protocol (ISO/IEC 24778:2008 Annex F Table F.1)
	if (res.bytes[0] == 29) {
		res.symbology.modifier = '1'; // GS1
		res.symbology.aiFlag = AIFlag::GS1;
		res.erase(0, 1); // Remove FNC1
	} else if (res.bytes.size() > 2 && std::isupper(res.bytes[0]) && res.bytes[1] == 29) {
		// FNC1 following single uppercase letter (the AIM Application Indicator)
		res.symbology.modifier = '2'; // AIM
		res.symbology.aiFlag = AIFlag::AIM;
		res.erase(1, 1); // Remove FNC1,
						 // The AIM Application Indicator character "A"-"Z" is left in the stream (ISO/IEC 24778:2008 16.2)
	} else if (res.bytes.size() > 3 && std::isdigit(res.bytes[0]) && std::isdigit(res.bytes[1]) && res.bytes[2] == 29) {
		// FNC1 following 2 digits (the AIM Application Indicator)
		res.symbology.modifier = '2'; // AIM
		res.symbology.aiFlag = AIFlag::AIM;
		res.erase(2, 1); // Remove FNC1
						 // The AIM Application Indicator characters "00"-"99" are left in the stream (ISO/IEC 24778:2008 16.2)
	}

	if (sai.index != -1)
		res.symbology.modifier += 6; // TODO: this is wrong as long as we remove the sai info from the content in ParseStructuredAppend

	return DecoderResult(std::move(res)).setStructuredAppend(sai);
}

DecoderResult Decode(const DetectorResult& detectorResult)
{