Class CommentStripper

  • All Implemented Interfaces:
    javax.xml.transform.Result, Receiver

    public class CommentStripper
    extends ProxyReceiver
    The CommentStripper class is a filter that removes all comments and processing instructions. It also concatenates text nodes that are split by comments and PIs. This follows the rules for processing stylesheets; it is also used for removing comments and PIs from the tree seen by XPath expressions used to process XSD 1.1 assertions.

    It also has the ability to deep-skip xsl:note (or any other) elements, as required for XSLT 4.0.

    • Constructor Detail

      • CommentStripper

        public CommentStripper​(Receiver next)
        Default constructor for use in subclasses
        Parameters:
        next - the next receiver in the pipeline
    • Method Detail

      • setSkippedElementTest

        public void setSkippedElementTest​(java.util.function.Predicate<NodeName> test)
      • startElement

        public void startElement​(NodeName elemName,
                                 SchemaType type,
                                 AttributeMap attributes,
                                 NamespaceMap namespaces,
                                 Location location,
                                 int properties)
                          throws XPathException
        Description copied from class: ProxyReceiver
        Notify the start of an element
        Specified by:
        startElement in interface Receiver
        Overrides:
        startElement in class ProxyReceiver
        Parameters:
        elemName - the name of the element.
        type - the type annotation of the element.
        attributes - the attributes of this element
        namespaces - the in-scope namespaces of this element: generally this is all the in-scope namespaces, without relying on inheriting namespaces from parent elements
        location - an object providing information about the module, line, and column where the node originated
        properties - bit-significant properties of the element node. If there are no relevant properties, zero is supplied. The definitions of the bits are in class ReceiverOption
        Throws:
        XPathException - if an error occurs
      • characters

        public void characters​(UnicodeString chars,
                               Location locationId,
                               int properties)
                        throws XPathException
        Handle a text node. Because we're often handling stylesheets on this path, whitespace text nodes will often be stripped but we can't strip them immediately because of the case [element] [!-- comment --]text[/element], where the space before the comment is considered significant. But it's worth going to some effort to avoid uncompressing the whitespace in the more common case, so that it can easily be detected and stripped downstream.
        Specified by:
        characters in interface Receiver
        Overrides:
        characters in class ProxyReceiver
        Parameters:
        chars - The characters
        locationId - provides information such as line number and system ID.
        properties - Bit significant value. The following bits are defined:
        DISABLE_ESCAPING
        Disable escaping for this text node
        USE_CDATA
        Output as a CDATA section
        Throws:
        XPathException - if an error occurs
      • comment

        public void comment​(UnicodeString chars,
                            Location locationId,
                            int properties)
        Remove comments
        Specified by:
        comment in interface Receiver
        Overrides:
        comment in class ProxyReceiver
        Parameters:
        chars - The content of the comment
        locationId - provides information such as line number and system ID.
        properties - Additional information about the comment.
      • processingInstruction

        public void processingInstruction​(java.lang.String name,
                                          UnicodeString data,
                                          Location locationId,
                                          int properties)
        Remove processing instructions
        Specified by:
        processingInstruction in interface Receiver
        Overrides:
        processingInstruction in class ProxyReceiver
        Parameters:
        name - The PI name. This must be a legal name (it will not be checked).
        data - The data portion of the processing instruction
        locationId - provides information such as line number and system ID.
        properties - Additional information about the PI.