public final class TailFilter extends BaseParamFilterReader implements ChainableReader
n lines of a stream. (Default is last10 lines.)
Example:
<tailfilter lines="3"/>Or:
<filterreader classname="org.apache.tools.ant.filters.TailFilter"> <param name="lines" value="3"/> </filterreader>
| Constructor and Description |
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TailFilter()
Constructor for "dummy" instances.
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TailFilter(java.io.Reader in)
Creates a new filtered reader.
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| Modifier and Type | Method and Description |
|---|---|
java.io.Reader |
chain(java.io.Reader rdr)
Creates a new TailFilter using the passed in
Reader for instantiation.
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int |
read()
Returns the next character in the filtered stream.
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void |
setLines(long lines)
Sets the number of lines to be returned in the filtered stream.
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void |
setSkip(long skip)
Sets the number of lines to be skipped in the filtered stream.
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getParameters, setParametersgetInitialized, getProject, read, readFully, readLine, setInitialized, setProject, skippublic TailFilter()
BaseFilterReader()public TailFilter(java.io.Reader in)
in - A Reader object providing the underlying stream.
Must not be null.public int read()
throws java.io.IOException
read in class java.io.FilterReaderjava.io.IOException - if the underlying stream throws an IOException
during readingpublic void setLines(long lines)
lines - the number of lines to be returned in the filtered streampublic void setSkip(long skip)
skip - the number of lines to be skipped in the filtered streampublic java.io.Reader chain(java.io.Reader rdr)
chain in interface ChainableReaderrdr - A Reader object providing the underlying stream.
Must not be null.