Class DTD

java.lang.Object
- javax.swing.text.html.parser.DTD

All Implemented Interfaces:: DTDConstants

public class DTD
extends Object
implements DTDConstants

The representation of an SGML DTD. DTD describes a document syntax and is used in parsing of HTML documents. It contains a list of elements and their attributes as well as a list of entities defined in the DTD.

See Also:: Element, AttributeList, ContentModel, Parser

Field Summary

Fields
Modifier and Type	Field	Description
`Element`	`applet`	The element corresponding to applet.
`Element`	`base`	The element corresponding to base.
`Element`	`body`	The element corresponding to body.
`Hashtable<String,Element>`	`elementHash`	The hash table contains the name of element and the corresponding element.
`Vector<Element>`	`elements`	The vector of elements
`Hashtable<Object,Entity>`	`entityHash`	The hash table contains an `Object` and the corresponding `Entity`
`static int`	`FILE_VERSION`	The version of a file
`Element`	`head`	The element corresponding to head.
`Element`	`html`	The element corresponding to html.
`Element`	`isindex`	The element corresponding to isindex.
`Element`	`meta`	The element corresponding to meta.
`String`	`name`	the name of the DTD
`Element`	`p`	The element corresponding to p.
`Element`	`param`	The element corresponding to param.
`Element`	`pcdata`	The element corresponding to pcdata.
`Element`	`title`	The element corresponding to title.

Fields declared in interface javax.swing.text.html.parser.DTDConstants

ANY, CDATA, CONREF, CURRENT, DEFAULT, EMPTY, ENDTAG, ENTITIES, ENTITY, FIXED, GENERAL, ID, IDREF, IDREFS, IMPLIED, MD, MODEL, MS, NAME, NAMES, NMTOKEN, NMTOKENS, NOTATION, NUMBER, NUMBERS, NUTOKEN, NUTOKENS, PARAMETER, PI, PUBLIC, RCDATA, REQUIRED, SDATA, STARTTAG, SYSTEM

Constructor Summary

Constructors
Modifier	Constructor	Description
`protected`	`DTD(String name)`	Creates a new DTD with the specified name.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected AttributeList`	`defAttributeList(String name, int type, int modifier, String value, String values, AttributeList atts)`	Creates and returns an `AttributeList` responding to a new attribute.
`protected ContentModel`	`defContentModel(int type, Object obj, ContentModel next)`	Creates and returns a new content model.
`protected Element`	`defElement(String name, int type, boolean omitStart, boolean omitEnd, ContentModel content, String[] exclusions, String[] inclusions, AttributeList atts)`	Creates and returns an `Element`.
`Entity`	`defEntity(String name, int type, int ch)`	Creates and returns a character `Entity`.
`protected Entity`	`defEntity(String name, int type, String str)`	Creates and returns an `Entity`.
`void`	`defineAttributes(String name, AttributeList atts)`	Defines attributes for an `Element`.
`Element`	`defineElement(String name, int type, boolean omitStart, boolean omitEnd, ContentModel content, BitSet exclusions, BitSet inclusions, AttributeList atts)`	Returns the `Element` which matches the specified parameters.
`Entity`	`defineEntity(String name, int type, char[] data)`	Defines an entity.
`static DTD`	`getDTD(String name)`	Returns a DTD with the specified `name`.
`Element`	`getElement(int index)`	Gets an element by index.
`Element`	`getElement(String name)`	Gets an element by name.
`Entity`	`getEntity(int ch)`	Gets a character entity.
`Entity`	`getEntity(String name)`	Gets an entity by name.
`String`	`getName()`	Gets the name of the DTD.
`static void`	`putDTDHash(String name, DTD dtd)`	Put a name and appropriate DTD to hashtable.
`void`	`read(DataInputStream in)`	Recreates a DTD from an archived format.
`String`	`toString()`	Returns a string representation of this DTD.

Methods declared in class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

name

public String name

the name of the DTD

elements

public Vector<Element> elements

The vector of elements

elementHash

public Hashtable<String,Element> elementHash

The hash table contains the name of element and the corresponding element.

entityHash

public Hashtable<Object,Entity> entityHash

The hash table contains an Object and the corresponding Entity

pcdata

public final Element pcdata

The element corresponding to pcdata.

html

public final Element html

The element corresponding to html.

base

public final Element base

The element corresponding to base.

isindex

public final Element isindex

The element corresponding to isindex.

head

public final Element head

The element corresponding to head.

body

public final Element body

The element corresponding to body.

applet

public final Element applet

The element corresponding to applet.

param

public final Element param

The element corresponding to param.

p

public final Element p

The element corresponding to p.

title

public final Element title

The element corresponding to title.

FILE_VERSION

public static final int FILE_VERSION

The version of a file

See Also:: Constant Field Values

Constructor Detail

DTD

protected DTD(String name)

Creates a new DTD with the specified name.

Parameters:: name - the name, as a String of the new DTD

Method Detail

getName

public String getName()

Gets the name of the DTD.

Returns:: the name of the DTD

getEntity

public Entity getEntity(String name)

Gets an entity by name.

Parameters:: name - the entity name
Returns:: the Entity corresponding to the name String

getEntity

public Entity getEntity(int ch)

Gets a character entity.

Parameters:: ch - the character
Returns:: the Entity corresponding to the ch character

getElement

public Element getElement(String name)

Gets an element by name. A new element is created if the element doesn't exist.

Parameters:: name - the requested String
Returns:: the Element corresponding to name, which may be newly created

getElement

public Element getElement(int index)

Gets an element by index.

Parameters:: index - the requested index
Returns:: the Element corresponding to index

defineEntity

public Entity defineEntity(String name,
                           int type,
                           char[] data)

Defines an entity. If the Entity specified by name, type, and data exists, it is returned; otherwise a new Entity is created and is returned.

Parameters:: name - the name of the Entity as a String; type - the type of the Entity; data - the Entity's data
Returns:: the Entity requested or a new Entity if not found

defineElement

public Element defineElement(String name,
                             int type,
                             boolean omitStart,
                             boolean omitEnd,
                             ContentModel content,
                             BitSet exclusions,
                             BitSet inclusions,
                             AttributeList atts)

Returns the Element which matches the specified parameters. If one doesn't exist, a new one is created and returned.

Parameters:: name - the name of the Element; type - the type of the Element; omitStart - true if start should be omitted; omitEnd - true if end should be omitted; content - the ContentModel; exclusions - the set of elements that must not occur inside the element; inclusions - the set of elements that can occur inside the element; atts - the AttributeList specifying the Element
Returns:: the Element specified

defineAttributes

public void defineAttributes(String name,
                             AttributeList atts)

Defines attributes for an Element.

Parameters:: name - the name of the Element; atts - the AttributeList specifying the Element

defEntity

public Entity defEntity(String name,
                        int type,
                        int ch)

Creates and returns a character Entity.

Parameters:: name - the entity's name; type - the entity's type; ch - the entity's value (character)
Returns:: the new character Entity

defEntity

protected Entity defEntity(String name,
                           int type,
                           String str)

Creates and returns an Entity.

Parameters:: name - the entity's name; type - the entity's type; str - the entity's data section
Returns:: the new Entity

defElement

protected Element defElement(String name,
                             int type,
                             boolean omitStart,
                             boolean omitEnd,
                             ContentModel content,
                             String[] exclusions,
                             String[] inclusions,
                             AttributeList atts)

Creates and returns an Element.

Parameters:: name - the element's name; type - the element's type; omitStart - true if the element needs no starting tag; omitEnd - true if the element needs no closing tag; content - the element's content; exclusions - the elements that must be excluded from the content of the element; inclusions - the elements that can be included as the content of the element; atts - the attributes of the element
Returns:: the new Element

defAttributeList

protected AttributeList defAttributeList(String name,
                                         int type,
                                         int modifier,
                                         String value,
                                         String values,
                                         AttributeList atts)

Creates and returns an AttributeList responding to a new attribute.

Parameters:: name - the attribute's name; type - the attribute's type; modifier - the attribute's modifier; value - the default value of the attribute; values - the allowed values for the attribute (multiple values could be separated by '|'); atts - the previous attribute of the element; to be placed to AttributeList.next, creating a linked list
Returns:: the new AttributeList

defContentModel

protected ContentModel defContentModel(int type,
                                       Object obj,
                                       ContentModel next)

Creates and returns a new content model.

Parameters:: type - the type of the new content model; obj - the content of the content model; next - pointer to the next content model
Returns:: the new ContentModel

toString

public String toString()

Returns a string representation of this DTD.

Overrides:: toString in class Object
Returns:: the string representation of this DTD

putDTDHash

public static void putDTDHash(String name,
                              DTD dtd)

Put a name and appropriate DTD to hashtable.

Parameters:: name - the name of the DTD; dtd - the DTD

getDTD

public static DTD getDTD(String name)
                  throws IOException

Returns a DTD with the specified name. If a DTD with that name doesn't exist, one is created and returned. Any uppercase characters in the name are converted to lowercase.

Parameters:: name - the name of the DTD
Returns:: the DTD which corresponds to name
Throws:: IOException - if an I/O error occurs

read

public void read(DataInputStream in)
          throws IOException

Recreates a DTD from an archived format.

Parameters:: in - the DataInputStream to read from
Throws:: IOException - if an I/O error occurs

Class DTD

Field Summary

Fields declared in interface javax.swing.text.html.parser.DTDConstants

Constructor Summary

Method Summary

Methods declared in class java.lang.Object

Field Detail

name

elements

elementHash

entityHash

pcdata

html

meta

base

isindex

head

body

applet

param

p

title

FILE_VERSION

Constructor Detail

DTD

Method Detail

getName

getEntity

getEntity

getElement

getElement

defineEntity

defineElement

defineAttributes

defEntity

defEntity

defElement

defAttributeList

defContentModel

toString

putDTDHash

getDTD

read