protected void flushBufferAndCallbackAfterHeader()

in src/main/java/org/apache/xml/security/stax/impl/processor/output/XMLSignatureEndingOutputProcessor.java [79:150]
56 lines of code
19 McCabe index (conditional complexity)

    protected void flushBufferAndCallbackAfterHeader(
            OutputProcessorChain outputProcessorChain, Deque<XMLSecEvent> xmlSecEventDeque)
            throws XMLStreamException, XMLSecurityException {

        // forward to the root element and output it
        XMLSecEvent xmlSecEvent = xmlSecEventDeque.pop();
        while (!xmlSecEvent.isStartElement()) {
            outputProcessorChain.reset();
            outputProcessorChain.processEvent(xmlSecEvent);
            xmlSecEvent = xmlSecEventDeque.pop();
        }
        outputProcessorChain.reset();
        outputProcessorChain.processEvent(xmlSecEvent);

        // search the specified position
        int depth = 0;
        QName signaturePositionQName = getSecurityProperties().getSignaturePositionQName();
        boolean start = getSecurityProperties().isSignaturePositionStart();
        if (signaturePositionQName != null) {
            while (!xmlSecEventDeque.isEmpty()
                && !(start && xmlSecEvent.isStartElement() && xmlSecEvent.asStartElement().getName().equals(signaturePositionQName)
                    || !start && xmlSecEvent.isEndElement() && xmlSecEvent.asEndElement().getName().equals(signaturePositionQName))) {
                xmlSecEvent = xmlSecEventDeque.pop();

                if (xmlSecEvent.isStartElement()) {
                    depth++;
                } else if (xmlSecEvent.isEndElement()) {
                    depth--;
                    if (depth < 0) {
                        // root-end-element reached
                        xmlSecEventDeque.push(xmlSecEvent);
                        break;
                    }
                }

                outputProcessorChain.reset();
                outputProcessorChain.processEvent(xmlSecEvent);
            }
        } else {
            // @see SANTUARIO-405
            // Enhances SANTUARIO-324
            // Output the signature at a specific position.
            // By default, this is just after the root element
            int signaturePosition = getSecurityProperties().getSignaturePosition();
            if (signaturePosition < 0) {
                signaturePosition = 0;
            }
            int position = 0;
            while (position != signaturePosition) {
                xmlSecEvent = xmlSecEventDeque.pop();

                if (xmlSecEvent.isStartElement()) {
                    depth++;
                } else if (xmlSecEvent.isEndElement()) {
                    depth--;
                    if (depth == 0) {
                        position++;
                    } else if (depth < 0) {
                        // root-end-element reached
                        xmlSecEventDeque.push(xmlSecEvent);
                        break;
                    }
                }

                outputProcessorChain.reset();
                outputProcessorChain.processEvent(xmlSecEvent);
            }
        }

        //...then call super to append the signature and flush the rest
        super.flushBufferAndCallbackAfterHeader(outputProcessorChain, xmlSecEventDeque);
    }