org.opencms.json
Class XMLTokener

java.lang.Object
  org.opencms.json.JSONTokener
      org.opencms.json.XMLTokener

public class XMLTokener
extends JSONTokener

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

Field Summary

static HashMap

ENTITY The table of ENTITY values.

Constructor Summary

XMLTokener(String s)
Construct an XMLTokener from a string.

Method Summary

String	nextCDATA() Get the text in the CDATA block.
Object	nextContent() Get the next XML outer token, trimming whitespace.
Object	nextEntity(char a) Return the next ENTITY.
Object	nextMeta() Returns the next XML meta token.
Object	nextToken() Get the next XML Token.
boolean	skipPast(String to) Skip characters until past the requested string.

Methods inherited from class org.opencms.json.JSONTokener

back, dehexchar, more, next, next, next, nextClean, nextString, nextTo, nextTo, nextValue, skipTo, 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 ENTITY

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

Constructor Detail

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 something goes wrong

nextEntity

public Object nextEntity(char a)
                  throws JSONException

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

Parameters:

a - 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 boolean skipPast(String to)
                 throws JSONException

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

Returns:

the truth

Throws:

JSONException - if something goes wrong