--- /dev/null
+// Attributes2Impl.java - extended AttributesImpl
+// http://www.saxproject.org
+// Public Domain: no warranty.
+// $Id: Attributes2Impl.java,v 1.5 2004/03/08 13:01:01 dmegginson Exp $
+
+package org.xml.sax.ext;
+
+import org.xml.sax.Attributes;
+import org.xml.sax.helpers.AttributesImpl;
+
+
+/**
+ * SAX2 extension helper for additional Attributes information,
+ * implementing the {@link Attributes2} interface.
+ *
+ * <blockquote>
+ * <em>This module, both source code and documentation, is in the
+ * Public Domain, and comes with <strong>NO WARRANTY</strong>.</em>
+ * </blockquote>
+ *
+ * <p>This is not part of core-only SAX2 distributions.</p>
+ *
+ * <p>The <em>specified</em> flag for each attribute will always
+ * be true, unless it has been set to false in the copy constructor
+ * or using {@link #setSpecified}.
+ * Similarly, the <em>declared</em> flag for each attribute will
+ * always be false, except for defaulted attributes (<em>specified</em>
+ * is false), non-CDATA attributes, or when it is set to true using
+ * {@link #setDeclared}.
+ * If you change an attribute's type by hand, you may need to modify
+ * its <em>declared</em> flag to match.
+ * </p>
+ *
+ * @since SAX 2.0 (extensions 1.1 alpha)
+ * @author David Brownell
+ * @version TBS
+ */
+public class Attributes2Impl extends AttributesImpl implements Attributes2
+{
+ private boolean declared [];
+ private boolean specified [];
+
+
+ /**
+ * Construct a new, empty Attributes2Impl object.
+ */
+ public Attributes2Impl () { }
+
+
+ /**
+ * Copy an existing Attributes or Attributes2 object.
+ * If the object implements Attributes2, values of the
+ * <em>specified</em> and <em>declared</em> flags for each
+ * attribute are copied.
+ * Otherwise the flag values are defaulted to assume no DTD was used,
+ * unless there is evidence to the contrary (such as attributes with
+ * type other than CDATA, which must have been <em>declared</em>).
+ *
+ * <p>This constructor is especially useful inside a
+ * {@link org.xml.sax.ContentHandler#startElement startElement} event.</p>
+ *
+ * @param atts The existing Attributes object.
+ */
+ public Attributes2Impl (Attributes atts)
+ {
+ super (atts);
+ }
+
+
+ ////////////////////////////////////////////////////////////////////
+ // Implementation of Attributes2
+ ////////////////////////////////////////////////////////////////////
+
+
+ /**
+ * Returns the current value of the attribute's "declared" flag.
+ */
+ // javadoc mostly from interface
+ @Override
+ public boolean isDeclared (int index)
+ {
+ if (index < 0 || index >= getLength ())
+ throw new ArrayIndexOutOfBoundsException (
+ "No attribute at index: " + index);
+ return declared [index];
+ }
+
+
+ /**
+ * Returns the current value of the attribute's "declared" flag.
+ */
+ // javadoc mostly from interface
+ @Override
+ public boolean isDeclared (String uri, String localName)
+ {
+ int index = getIndex (uri, localName);
+
+ if (index < 0)
+ throw new IllegalArgumentException (
+ "No such attribute: local=" + localName
+ + ", namespace=" + uri);
+ return declared [index];
+ }
+
+
+ /**
+ * Returns the current value of the attribute's "declared" flag.
+ */
+ // javadoc mostly from interface
+ @Override
+ public boolean isDeclared (String qName)
+ {
+ int index = getIndex (qName);
+
+ if (index < 0)
+ throw new IllegalArgumentException (
+ "No such attribute: " + qName);
+ return declared [index];
+ }
+
+
+ /**
+ * Returns the current value of an attribute's "specified" flag.
+ *
+ * @param index The attribute index (zero-based).
+ * @return current flag value
+ * @exception java.lang.ArrayIndexOutOfBoundsException When the
+ * supplied index does not identify an attribute.
+ */
+ @Override
+ public boolean isSpecified (int index)
+ {
+ if (index < 0 || index >= getLength ())
+ throw new ArrayIndexOutOfBoundsException (
+ "No attribute at index: " + index);
+ return specified [index];
+ }
+
+
+ /**
+ * Returns the current value of an attribute's "specified" flag.
+ *
+ * @param uri The Namespace URI, or the empty string if
+ * the name has no Namespace URI.
+ * @param localName The attribute's local name.
+ * @return current flag value
+ * @exception java.lang.IllegalArgumentException When the
+ * supplied names do not identify an attribute.
+ */
+ @Override
+ public boolean isSpecified (String uri, String localName)
+ {
+ int index = getIndex (uri, localName);
+
+ if (index < 0)
+ throw new IllegalArgumentException (
+ "No such attribute: local=" + localName
+ + ", namespace=" + uri);
+ return specified [index];
+ }
+
+
+ /**
+ * Returns the current value of an attribute's "specified" flag.
+ *
+ * @param qName The XML qualified (prefixed) name.
+ * @return current flag value
+ * @exception java.lang.IllegalArgumentException When the
+ * supplied name does not identify an attribute.
+ */
+ @Override
+ public boolean isSpecified (String qName)
+ {
+ int index = getIndex (qName);
+
+ if (index < 0)
+ throw new IllegalArgumentException (
+ "No such attribute: " + qName);
+ return specified [index];
+ }
+
+
+ ////////////////////////////////////////////////////////////////////
+ // Manipulators
+ ////////////////////////////////////////////////////////////////////
+
+
+ /**
+ * Copy an entire Attributes object. The "specified" flags are
+ * assigned as true, and "declared" flags as false (except when
+ * an attribute's type is not CDATA),
+ * unless the object is an Attributes2 object.
+ * In that case those flag values are all copied.
+ *
+ * @see AttributesImpl#setAttributes
+ */
+ @Override
+ public void setAttributes (Attributes atts)
+ {
+ int length = atts.getLength ();
+
+ super.setAttributes (atts);
+ declared = new boolean [length];
+ specified = new boolean [length];
+
+ if (atts instanceof Attributes2) {
+ Attributes2 a2 = (Attributes2) atts;
+ for (int i = 0; i < length; i++) {
+ declared [i] = a2.isDeclared (i);
+ specified [i] = a2.isSpecified (i);
+ }
+ } else {
+ for (int i = 0; i < length; i++) {
+ declared [i] = !"CDATA".equals (atts.getType (i));
+ specified [i] = true;
+ }
+ }
+ }
+
+
+ /**
+ * Add an attribute to the end of the list, setting its
+ * "specified" flag to true. To set that flag's value
+ * to false, use {@link #setSpecified}.
+ *
+ * <p>Unless the attribute <em>type</em> is CDATA, this attribute
+ * is marked as being declared in the DTD. To set that flag's value
+ * to true for CDATA attributes, use {@link #setDeclared}.
+ *
+ * @see AttributesImpl#addAttribute
+ */
+ @Override
+ public void addAttribute (String uri, String localName, String qName,
+ String type, String value)
+ {
+ super.addAttribute (uri, localName, qName, type, value);
+
+ int length = getLength ();
+
+ if (length < specified.length) {
+ boolean newFlags [];
+
+ newFlags = new boolean [length];
+ System.arraycopy (declared, 0, newFlags, 0, declared.length);
+ declared = newFlags;
+
+ newFlags = new boolean [length];
+ System.arraycopy (specified, 0, newFlags, 0, specified.length);
+ specified = newFlags;
+ }
+
+ specified [length - 1] = true;
+ declared [length - 1] = !"CDATA".equals (type);
+ }
+
+
+ // javadoc entirely from superclass
+ @Override
+ public void removeAttribute (int index)
+ {
+ int origMax = getLength () - 1;
+
+ super.removeAttribute (index);
+ if (index != origMax) {
+ System.arraycopy (declared, index + 1, declared, index,
+ origMax - index);
+ System.arraycopy (specified, index + 1, specified, index,
+ origMax - index);
+ }
+ }
+
+
+ /**
+ * Assign a value to the "declared" flag of a specific attribute.
+ * This is normally needed only for attributes of type CDATA,
+ * including attributes whose type is changed to or from CDATA.
+ *
+ * @param index The index of the attribute (zero-based).
+ * @param value The desired flag value.
+ * @exception java.lang.ArrayIndexOutOfBoundsException When the
+ * supplied index does not identify an attribute.
+ * @see #setType
+ */
+ public void setDeclared (int index, boolean value)
+ {
+ if (index < 0 || index >= getLength ())
+ throw new ArrayIndexOutOfBoundsException (
+ "No attribute at index: " + index);
+ declared [index] = value;
+ }
+
+
+ /**
+ * Assign a value to the "specified" flag of a specific attribute.
+ * This is the only way this flag can be cleared, except clearing
+ * by initialization with the copy constructor.
+ *
+ * @param index The index of the attribute (zero-based).
+ * @param value The desired flag value.
+ * @exception java.lang.ArrayIndexOutOfBoundsException When the
+ * supplied index does not identify an attribute.
+ */
+ public void setSpecified (int index, boolean value)
+ {
+ if (index < 0 || index >= getLength ())
+ throw new ArrayIndexOutOfBoundsException (
+ "No attribute at index: " + index);
+ specified [index] = value;
+ }
+}
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