/**
* Look up an attribute's value by index.
*
* <p>If the attribute value is a list of tokens (IDREFS, ENTITIES, or NMTOKENS), the tokens will
* be concatenated into a single string with each token separated by a single space.
*
* @param index The attribute index (zero-based).
* @return The attribute's value as a string, or null if the index is out of range.
* @see #getLength
*/
public String getValue(int index) {
Attribute attribute;
String ret;
attribute = (Attribute) (mTag.getAttributesEx().elementAt(index + 1));
ret = attribute.getValue();
if (null == ret) ret = "";
return (ret);
}
@Override
public void visitTag(Tag tag) {
Element e = Document.get().createElement(tag.getTagName());
map.put(tag, e);
for (Object o : tag.getAttributesEx()) {
Attribute a = (Attribute) o;
if ("id".equalsIgnoreCase(a.getName())) {
e.setId(a.getValue());
} else if ("style".equalsIgnoreCase(a.getName())) {
processStyle(e, a.getValue());
} else if ("class".equalsIgnoreCase(a.getName())) {
e.setClassName(a.getValue());
} else if (!a.isEmpty() && !a.isWhitespace() && a.isValued()) {
e.setAttribute(a.getName(), a.getValue());
}
}
Element parent = getParent(tag.getParent());
parent.appendChild(e);
}
/**
* Returns the value of an attribute.
*
* @param name Name of attribute, case insensitive.
* @return The value associated with the attribute or null if it does not exist, or is a
* stand-alone or
*/
public String getAttribute(String name) {
Attribute attribute;
String ret;
ret = null;
attribute = getAttributeEx(name);
if (null != attribute) ret = attribute.getValue();
return (ret);
}
/**
* Given a tag, check its attributes, removing those unwanted or not secure
*
* @param tag The tag to analyze
* @param checkIfAttributeIsWelcome true if the attribute name should be matched against the list
* of welcome attributes, set in the main configuration file.
*/
private void checkAndValidateAttributes(Tag tag, boolean checkIfAttributeIsWelcome) {
Vector<Attribute> newAttributes = new Vector<Attribute>();
for (Iterator<?> iter = tag.getAttributesEx().iterator(); iter.hasNext(); ) {
Attribute a = (Attribute) iter.next();
String name = a.getName();
if (name == null) {
newAttributes.add(a);
} else {
name = name.toUpperCase();
if (a.getValue() == null) {
newAttributes.add(a);
continue;
}
String value = a.getValue().toLowerCase();
if (checkIfAttributeIsWelcome && !this.isAttributeWelcome(name)) {
continue;
}
if (!this.isAttributeSafe(name, value)) {
continue;
}
if (a.getValue().indexOf("&#") > -1) {
a.setValue(a.getValue().replaceAll("&#", "&#"));
}
newAttributes.add(a);
}
}
tag.setAttributesEx(newAttributes);
}
public boolean accept(Node node) {
Tag tag;
Attribute attribute;
boolean ret;
ret = false;
if (node instanceof Tag) {
tag = (Tag) node;
attribute = tag.getAttributeEx(mAttribute);
ret = null != attribute;
if (ret && (null != mValue)) ret = attribute.getValue().startsWith(mValue);
}
return (ret);
}
/**
* Set the name of this tag. This creates or replaces the first attribute of the tag (the zeroth
* element of the attribute vector).
*
* @param name The tag name.
*/
public void setTagName(String name) {
Attribute attribute;
Vector attributes;
Attribute zeroth;
attribute = new Attribute(name, null, (char) 0);
attributes = getAttributesEx();
if (null == attributes) {
attributes = new Vector();
setAttributesEx(attributes);
}
if (0 == attributes.size())
// nothing added yet
attributes.addElement(attribute);
else {
zeroth = (Attribute) attributes.elementAt(0);
// check for attribute that looks like a name
if ((null == zeroth.getValue()) && (0 == zeroth.getQuote()))
attributes.setElementAt(attribute, 0);
else attributes.insertElementAt(attribute, 0);
}
}
/**
* Set this tag to be an empty xml node, or not. Adds or removes an ending slash on the tag.
*
* @param emptyXmlTag If true, ensures there is an ending slash in the node, i.e. <tag/>,
* otherwise removes it.
*/
public void setEmptyXmlTag(boolean emptyXmlTag) {
Vector attributes;
int size;
Attribute attribute;
String name;
String value;
int length;
attributes = getAttributesEx();
size = attributes.size();
if (0 < size) {
attribute = (Attribute) attributes.elementAt(size - 1);
name = attribute.getName();
if (null != name) {
length = name.length();
value = attribute.getValue();
if (null == value)
if (name.charAt(length - 1) == '/') {
// already exists, remove if requested
if (!emptyXmlTag)
if (1 == length) attributes.removeElementAt(size - 1);
else {
// this shouldn't happen, but covers the case
// where no whitespace separates the slash
// from the previous attribute
name = name.substring(0, length - 1);
attribute = new Attribute(name, null);
attributes.removeElementAt(size - 1);
attributes.addElement(attribute);
}
} else {
// ends with attribute, add whitespace + slash if requested
if (emptyXmlTag) {
attribute = new Attribute(" ");
attributes.addElement(attribute);
attribute = new Attribute("/", null);
attributes.addElement(attribute);
}
}
else {
// some valued attribute, add whitespace + slash if requested
if (emptyXmlTag) {
attribute = new Attribute(" ");
attributes.addElement(attribute);
attribute = new Attribute("/", null);
attributes.addElement(attribute);
}
}
} else {
// ends with whitespace, add if requested
if (emptyXmlTag) {
attribute = new Attribute("/", null);
attributes.addElement(attribute);
}
}
} else
// nothing there, add if requested
if (emptyXmlTag) {
attribute = new Attribute("/", null);
attributes.addElement(attribute);
}
}
