org.apache.tools.ant.filters

Class StripJavaComments

Implemented Interfaces:
ChainableReader

public final class StripJavaComments
extends BaseFilterReader
implements ChainableReader

This is a Java comment and string stripper reader that filters those lexical tokens out for purposes of simple Java parsing. (if you have more complex Java parsing needs, use a real lexer). Since this class heavily relies on the single char read function, you are recommended to make it work on top of a buffered reader.

Constructor Summary

StripJavaComments()
Constructor for "dummy" instances.
StripJavaComments(Reader in)
Creates a new filtered reader.

Method Summary

Reader
chain(Reader rdr)
Creates a new StripJavaComments using the passed in Reader for instantiation.
int
read()
Returns the next character in the filtered stream, not including Java comments.

Methods inherited from class org.apache.tools.ant.filters.BaseFilterReader

getInitialized, getProject, read, readFully, readLine, setInitialized, setProject, skip

Constructor Details

StripJavaComments

public StripJavaComments()
Constructor for "dummy" instances.

StripJavaComments

public StripJavaComments(Reader in)
Creates a new filtered reader.
Parameters:
in - A Reader object providing the underlying stream. Must not be null.

Method Details

chain

public final Reader chain(Reader rdr)
Creates a new StripJavaComments using the passed in Reader for instantiation.
Specified by:
chain in interface ChainableReader
Parameters:
rdr - A Reader object providing the underlying stream. Must not be null.
Returns:
a new filter based on this configuration, but filtering the specified reader

read

public final int read()
            throws IOException
Returns the next character in the filtered stream, not including Java comments.
Returns:
the next character in the resulting stream, or -1 if the end of the resulting stream has been reached

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