Package org.apache.tools.ant.filters
Class ExpandProperties
java.lang.Object
java.io.Reader
java.io.FilterReader
org.apache.tools.ant.filters.BaseFilterReader
org.apache.tools.ant.filters.ExpandProperties
- All Implemented Interfaces:
Closeable
,AutoCloseable
,Readable
,ChainableReader
Expands Ant properties, if any, in the data.
Example:
<expandproperties/>Or:
<filterreader classname="org.apache.tools.ant.filters.ExpandProperties"/>
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Field Summary
Fields inherited from class java.io.FilterReader
in
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Constructor Summary
ConstructorDescriptionConstructor for "dummy" instances.Creates a new filtered reader. -
Method Summary
Methods inherited from class org.apache.tools.ant.filters.BaseFilterReader
getInitialized, getProject, read, readFully, readLine, setInitialized, setProject, skip
Methods inherited from class java.io.FilterReader
close, mark, markSupported, ready, reset
Methods inherited from class java.io.Reader
nullReader, read, read, transferTo
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Constructor Details
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ExpandProperties
public ExpandProperties()Constructor for "dummy" instances.- See Also:
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ExpandProperties
Creates a new filtered reader.- Parameters:
in
- A Reader object providing the underlying stream. Must not benull
.
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Method Details
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add
Restrict the expanded properties using a PropertySet.- Parameters:
propertySet
- replacement lookup
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read
Returns the next character in the filtered stream. The original stream is first read in fully, and the Ant properties are expanded. The results of this expansion are then queued so they can be read character-by-character.- Overrides:
read
in classFilterReader
- Returns:
- the next character in the resulting stream, or -1 if the end of the resulting stream has been reached
- Throws:
IOException
- if the underlying stream throws an IOException during reading
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chain
Creates a new ExpandProperties filter 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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