org.json

Class XMLTokener

java.lang.Object

org.json.JSONTokener

org.json.XMLTokener

public class XMLTokener
extends JSONTokener

The XMLTokener extends the JSONTokener to provide additional methods for the parsing of XML texts.

Field Summary

Fields

Modifier and Type	Field and Description
static HashMap<String,Character>	entity The table of entity values.

Constructor Summary

Constructors

Constructor and Description
XMLTokener(Reader r) Construct an XMLTokener from a Reader.
XMLTokener(String s) Construct an XMLTokener from a string.

Method Summary

Modifier and Type	Method and Description
String	nextCDATA() Get the text in the CDATA block.
Object	nextContent() Get the next XML outer token, trimming whitespace.
Object	nextEntity(char ampersand) {@code Return the next entity.
Object	nextMeta() {@code Returns the next XML meta token.
Object	nextToken() {@code Get the next XML Token.
void	skipPast(String to) Skip characters until past the requested string.

Methods inherited from class org.json.JSONTokener

back, dehexchar, end, more, next, next, next, nextClean, nextString, nextTo, nextTo, nextValue, skipTo, syntaxError, syntaxError, toString

Methods inherited from class java.lang.Object

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

Field Detail

entity

public static final HashMap<String,Character> entity

The table of entity values. It initially contains Character values for amp, apos, gt, lt, quot.

Constructor Detail

XMLTokener

public XMLTokener(Reader r)

Construct an XMLTokener from a Reader.

Parameters:

r - A source reader.

XMLTokener

public XMLTokener(String s)

Construct an XMLTokener from a string.

Parameters:

s - A source string.

Method Detail

nextCDATA

public String nextCDATA()
                 throws JSONException

Get the text in the CDATA block.

Returns:

The string up to the ]]>.

Throws:

JSONException - If the ]]> is not found.

nextContent

public Object nextContent()
                   throws JSONException

Get the next XML outer token, trimming whitespace. There are two kinds of tokens: the

 '<' 

character which begins a markup tag, and the content text between markup tags.

Returns:

A string, or a

 '<' 

Character, or null if there is no more source text.

Throws:

JSONException - if a called function has an error

nextEntity

public Object nextEntity(char ampersand)
                  throws JSONException

 Return the next entity. These entities are translated to Characters:
     &  '  >  <  ".
 

Parameters:

ampersand - An ampersand character.

Returns:

A Character or an entity String if the entity is not recognized.

Throws:

JSONException - If missing ';' in XML entity.

nextMeta

public Object nextMeta()
                throws JSONException

 
 Returns the next XML meta token. This is used for skipping over <!...>
 and <?...?> structures.
  

Returns:

 Syntax characters (< > / = ! ?) are returned as
  Character, and strings and names are returned as Boolean. We don't care
  what the values actually are.
  

Throws:

JSONException - If a string is not properly closed or if the XML is badly structured.

nextToken

public Object nextToken()
                 throws JSONException

 Get the next XML Token. These tokens are found inside of angle
 brackets. It may be one of these characters: / > = ! ? or it
 may be a string wrapped in single quotes or double quotes, or it may be a
 name.
 

Returns:

a String or a Character.

Throws:

JSONException - If the XML is not well formed.

skipPast

public void skipPast(String to)

Skip characters until past the requested string. If it is not found, we are left at the end of the source with a result of false.

Parameters:

to - A string to skip past.