God, I hate DTDs. I really do. Why this idiot standard still plagues us is beyond me.

Create a new entity. Simple entities can be constructed by passing a name, value to the constructor; this creates a generic, plain entity reference. For anything more complicated, you have to pass a Source to the constructor with the entity definiton, or use the accessor methods. WARNING: There is no validation of entity state except when the entity is read from a stream. If you start poking around with the accessors, you can easily create a non-conformant Entity. The best thing to do is dump the stupid DTDs and use XMLSchema instead.

 e = Entity.new( 'amp', '&' )

Evaluates whether the given string matchs an entity definition, returning true if so, and false otherwise.

Write out a fully formed, correct entity definition (assuming the Entity object itself is valid.

Returns this entity as a string. See write().

Returns the value of this entity. At the moment, only internal entities are processed. If the value contains internal references (IE, %blah;), those are replaced with their values. IE, if the doctype contains:

 <!ENTITY % foo "bar">
 <!ENTITY yada "nanoo %foo; nanoo>

then:

 doctype.entity('yada').value   #-> "nanoo bar nanoo"