edu.harvard.hul.ois.jhove.module.html
Class HtmlStack

java.lang.Object
  java.util.AbstractCollection<E>
      java.util.AbstractList<E>
          java.util.AbstractSequentialList<E>
              java.util.LinkedList
                  edu.harvard.hul.ois.jhove.module.html.HtmlStack

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.lang.Iterable, java.util.Collection, java.util.Deque, java.util.List, java.util.Queue

public class HtmlStack
extends java.util.LinkedList

A LinkedList dressed up as a stack for processing HTML objects. It knows about certain elements and their history on the stack.

Author:

Gary McGath

See Also:

Serialized Form

Field Summary

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

HtmlStack()

Method Summary

protected boolean	excludesTag(java.lang.String tag) Returns true if any element on the stack prohibits the specified tag.
protected boolean	isBodySeen() Returns true if a BODY element has been pushed on the stack.
protected boolean	isHeadSeen() Returns true if a HEAD element has been pushed on the stack.
protected void	popp() Pops top element from element stack.
protected void	popTo(int idx) Pops elements from the stack up to and including the one indexed by idx
protected void	push(JHOpenTag tag) Pushes an element onto the stack.
protected int	search(java.lang.String tag) Searches backwards through the element stack for a match to a given tag.
protected void	setBodyElement(HtmlTagDesc elem) Sets the value of the HEAD element for easy comparison
protected void	setFramesetElement(HtmlTagDesc elem) Sets the value of the HEAD element for easy comparison
protected void	setHeadElement(HtmlTagDesc elem) Sets the value of the HEAD element for easy comparison
protected JHOpenTag	top() Gets the top of the element stack without popping it.

Methods inherited from class java.util.LinkedList

add, add, addAll, addAll, addFirst, addLast, clear, clone, contains, descendingIterator, element, get, getFirst, getLast, indexOf, lastIndexOf, listIterator, offer, offerFirst, offerLast, peek, peekFirst, peekLast, poll, pollFirst, pollLast, pop, push, remove, remove, remove, removeFirst, removeFirstOccurrence, removeLast, removeLastOccurrence, set, size, toArray, toArray

Methods inherited from class java.util.AbstractSequentialList

iterator

Methods inherited from class java.util.AbstractList

equals, hashCode, listIterator, removeRange, subList

Methods inherited from class java.util.AbstractCollection

containsAll, isEmpty, removeAll, retainAll, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.List

containsAll, equals, hashCode, isEmpty, iterator, listIterator, removeAll, retainAll, subList

Methods inherited from interface java.util.Deque

iterator

Constructor Detail

HtmlStack

public HtmlStack()

Method Detail

setHeadElement

protected void setHeadElement(HtmlTagDesc elem)

Sets the value of the HEAD element for easy comparison

setBodyElement

protected void setBodyElement(HtmlTagDesc elem)

Sets the value of the HEAD element for easy comparison

setFramesetElement

protected void setFramesetElement(HtmlTagDesc elem)

Sets the value of the HEAD element for easy comparison

popp

protected void popp()

Pops top element from element stack. If we ever decide to go to a different stack implementation, it's necessary only to change these methods. Also, they add some type checking. Name changed from "pop" to "popp" to avoid a conflict in Java 1.6 with the List class.

push

protected void push(JHOpenTag tag)

Pushes an element onto the stack. This should have its element field set to function properly.

top

protected JHOpenTag top()

Gets the top of the element stack without popping it.

search

protected int search(java.lang.String tag)

Searches backwards through the element stack for a match to a given tag. Return -1 if no match.

popTo

protected void popTo(int idx)

Pops elements from the stack up to and including the one indexed by idx

isHeadSeen

protected boolean isHeadSeen()

Returns true if a HEAD element has been pushed on the stack.

isBodySeen

protected boolean isBodySeen()

Returns true if a BODY element has been pushed on the stack.

excludesTag

protected boolean excludesTag(java.lang.String tag)

Returns true if any element on the stack prohibits the specified tag.