Package org.apache.tools.ant.filters
Class StripLineComments
- java.lang.Object
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- java.io.Reader
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- java.io.FilterReader
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- org.apache.tools.ant.filters.BaseFilterReader
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- org.apache.tools.ant.filters.BaseParamFilterReader
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- org.apache.tools.ant.filters.StripLineComments
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- All Implemented Interfaces:
java.io.Closeable
,java.lang.AutoCloseable
,java.lang.Readable
,ChainableReader
,Parameterizable
public final class StripLineComments extends BaseParamFilterReader implements ChainableReader
This filter strips line comments. Example:<striplinecomments> <comment value="#"/> <comment value="--"/> <comment value="REM "/> <comment value="rem "/> <comment value="//"/> </striplinecomments>
Or:<filterreader classname="org.apache.tools.ant.filters.StripLineComments"> <param type="comment" value="#"/> <param type="comment" value="--"/> <param type="comment" value="REM "/> <param type="comment" value="rem "/> <param type="comment" value="//"/> </filterreader>
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Nested Class Summary
Nested Classes Modifier and Type Class Description static class
StripLineComments.Comment
The class that holds a comment representation.
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Constructor Summary
Constructors Constructor Description StripLineComments()
Constructor for "dummy" instances.StripLineComments(java.io.Reader in)
Creates a new filtered reader.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
addConfiguredComment(StripLineComments.Comment comment)
Adds acomment
element to the list of prefixes.java.io.Reader
chain(java.io.Reader rdr)
Creates a new StripLineComments using the passed in Reader for instantiation.int
read()
Returns the next character in the filtered stream, only including lines from the original stream which don't start with any of the specified comment prefixes.-
Methods inherited from class org.apache.tools.ant.filters.BaseParamFilterReader
getParameters, setParameters
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Methods inherited from class org.apache.tools.ant.filters.BaseFilterReader
getInitialized, getProject, read, readFully, readLine, setInitialized, setProject, skip
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Constructor Detail
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StripLineComments
public StripLineComments()
Constructor for "dummy" instances.- See Also:
BaseFilterReader()
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StripLineComments
public StripLineComments(java.io.Reader in)
Creates a new filtered reader.- Parameters:
in
- A Reader object providing the underlying stream. Must not benull
.
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Method Detail
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read
public int read() throws java.io.IOException
Returns the next character in the filtered stream, only including lines from the original stream which don't start with any of the specified comment prefixes.- Overrides:
read
in classjava.io.FilterReader
- Returns:
- the next character in the resulting stream, or -1 if the end of the resulting stream has been reached
- Throws:
java.io.IOException
- if the underlying stream throws an IOException during reading
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addConfiguredComment
public void addConfiguredComment(StripLineComments.Comment comment)
Adds acomment
element to the list of prefixes.- Parameters:
comment
- Thecomment
element to add to the list of comment prefixes to strip. Must not benull
.
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chain
public java.io.Reader chain(java.io.Reader rdr)
Creates a new StripLineComments using the passed in Reader for instantiation.- Specified by:
chain
in interfaceChainableReader
- Parameters:
rdr
- A Reader object providing the underlying stream. Must not benull
.- Returns:
- a new filter based on this configuration, but filtering the specified reader
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