protected void specialTagHandling()

in wicket-core/src/main/java/org/apache/wicket/markup/parser/XmlPullParser.java [334:460]
86 lines of code
15 McCabe index (conditional complexity)

	protected void specialTagHandling(String tagText, final int openBracketIndex,
		int closeBracketIndex) throws ParseException
	{
		// Handle comments
		if (tagText.startsWith("!--"))
		{
			// downlevel-revealed conditional comments e.g.: <!--[if (gt IE9)|!(IE)]><!-->
			if (tagText.contains("![endif]--"))
			{
				lastType = HttpTagType.CONDITIONAL_COMMENT_ENDIF;

				// Move to position after the tag
				input.setPosition(closeBracketIndex + 1);
				return;
			}

			// Conditional comment? E.g.
			// "<!--[if IE]><a href='test.html'>my link</a><![endif]-->"
			if (tagText.startsWith("!--[if ") && tagText.endsWith("]"))
			{
				int pos = input.find("]-->", openBracketIndex + 1);
				if (pos == -1)
				{
					throw new ParseException("Unclosed conditional comment beginning at" +
						getLineAndColumnText(), openBracketIndex);
				}

				pos += 4;
				lastText = input.getSubstring(openBracketIndex, pos);

				// Actually it is no longer a comment. It is now
				// up to the browser to select the section appropriate.
				input.setPosition(closeBracketIndex + 1);
				lastType = HttpTagType.CONDITIONAL_COMMENT;
			}
			else
			{
				// Normal comment section.
				// Skip ahead to "-->". Note that you can not simply test for
				// tagText.endsWith("--") as the comment might contain a '>'
				// inside.
				int pos = input.find("-->", openBracketIndex + 1);
				if (pos == -1)
				{
					throw new ParseException("Unclosed comment beginning at" +
						getLineAndColumnText(), openBracketIndex);
				}

				pos += 3;
				lastText = input.getSubstring(openBracketIndex, pos);
				lastType = HttpTagType.COMMENT;
				input.setPosition(pos);
			}
			return;
		}

		// The closing tag of a conditional comment, e.g.
		// "<!--[if IE]><a href='test.html'>my link</a><![endif]-->
		// and also <!--<![endif]-->"
		if (tagText.equals("![endif]--"))
		{
			lastType = HttpTagType.CONDITIONAL_COMMENT_ENDIF;
			input.setPosition(closeBracketIndex + 1);
			return;
		}

		// CDATA sections might contain "<" which is not part of an XML tag.
		// Make sure escaped "<" are treated right
		if (tagText.startsWith("!["))
		{
			final String startText = (tagText.length() <= 8 ? tagText : tagText.substring(0, 8));
			if (startText.toUpperCase(Locale.ROOT).equals("![CDATA["))
			{
				int pos1 = openBracketIndex;
				do
				{
					// Get index of closing tag and advance past the tag
					closeBracketIndex = findChar('>', pos1);

					if (closeBracketIndex == -1)
					{
						throw new ParseException("No matching close bracket at" +
							getLineAndColumnText(), input.getPosition());
					}

					// Get the tagtext between open and close brackets
					tagText = input.getSubstring(openBracketIndex + 1, closeBracketIndex)
						.toString();

					pos1 = closeBracketIndex + 1;
				}
				while (tagText.endsWith("]]") == false);

				// Move to position after the tag
				input.setPosition(closeBracketIndex + 1);

				lastText = tagText;
				lastType = HttpTagType.CDATA;
				return;
			}
		}

		if (tagText.charAt(0) == '?')
		{
			lastType = HttpTagType.PROCESSING_INSTRUCTION;

			// Move to position after the tag
			input.setPosition(closeBracketIndex + 1);
			return;
		}

		if (tagText.startsWith("!DOCTYPE"))
		{
			lastType = HttpTagType.DOCTYPE;

			// Get the tagtext between open and close brackets
			doctype = input.getSubstring(openBracketIndex + 1, closeBracketIndex);

			// Move to position after the tag
			input.setPosition(closeBracketIndex + 1);
			return;
		}

		// Move to position after the tag
		lastType = HttpTagType.SPECIAL_TAG;
		input.setPosition(closeBracketIndex + 1);
	}