Package org.mmbase.util.transformers

`Tranformers' define tranformations of Strings, byte arrays and streams.

See:
Description

Interface Summary

ByteToCharTransformer	Interface for transformations.
ByteTransformer	Interface for transformations.
CharTransformer	Interface for transformations.
ConfigurableTransformer	Interface for transformations.
Transformer	Interface for transformations.

Class Summary

AbstractCommandStringTransformer	If you want to transform a Reader stream by the use of an external command, than you can extend this class.
Base64	Uses the sun.misc classes to do BASE64 encoding and decoding.
Censor	Replaces certain 'forbidden' words by something more decent.
ChainedCharTransformer	A CharTransformer which wraps N other CharTransformers, and links them with N - 1 new Threads, effectively working as a 'chained' transformer.
Config	Describes what encoding is configured.
ConfigurableReaderTransformer	Some Transformers implement more than one transformation.
ConfigurableStringTransformer	Some Transformers implement more than one transformation.
CopyCharTransformer	This is the character transformer which does not actually transform anything, it just copies the reader to the writer.
Figlet	An escaper based on the amusing 'figlet' tool, which is available on some system.
Identifier	Transforms strings to identifiers, replacing punctuation and whitespace with underscores.
InverseCharTransformer	Turns a Transformer around.
Latin3Surrogator	The ISO-8859-3 ('South European') unibyte encoding is used for languages like maltese and esperanto.
LinkFinder	Finds links in the Character String, and makes them 'clickable' for HTML (using a-tags).
LowerCaser	Transforms to lowercase
MD5	Do MD5 encoding.
Perl	And yet another rather idiotic type of Transformer.
ReaderTransformer	You need only to implement transform(Reader, Writer) you have the simplest kind of tranformer (which is 'streamable').
SpaceReducer	Replace 1 or more spaces by 1 space, and 1 or more newlines by 1 newline.
Sql	Encodings related to Sql.
StringTransformer	You need only to implement transform(String) you have the simplest kind of tranformer (which is not 'streamable').
Swallower	This tranformer is the equivalent of piping to /dev/null
TabToSpacesTransformer	Replace every tab by n spaces.
Transformers	Utitilies.
TransformingWriter	A Filtering Writer based on CharTransformers.
Trimmer	Trims leading and trailing white space.
UpperCaser	A 'hello world' for CharTransformers.
Url	Encodings related to URL's.
Xml	Transformations related to escaping in XML.
XmlEntities	Any non-ASCII character will be replaced by an XML-entity.
XmlField	XMLFields in MMBase.

Exception Summary

UnknownCodingException

Class UnknownCodingException

Package org.mmbase.util.transformers Description

`Tranformers' define tranformations of Strings, byte arrays and streams.

Transformers are devided in three species. CharTransformers which transform some String to another String (or Reader to a Writer). Then there are transformation which take a byte array (or an InputStream) and transform that to a String (or a Writer), these are called ByteToCharTransformers. And the last type are are the ByteTranformers, which tranform a byte array to another byte array (or an InputStream to an OutputStream).

All Transformers can be specialized to 'ConfigurableTransformers'.

Several Abstract implemenations are present too. E.g. the 'ReaderTransformer' is nearly a complete CharTransformer, only the function wich pipes a Reader to a Writer is abstract. StringTranformer is a CharTransformer which' only abstract function is the one taking a String argument.