|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Object | +--java.io.Reader | +--java.io.FilterReader | +--org.apache.tools.ant.filters.BaseFilterReader | +--org.apache.tools.ant.filters.BaseParamFilterReader | +--org.apache.tools.ant.filters.HeadFilter
Reads the first n
lines of a stream.
(Default is first 10 lines.)
Example:
<headfilter lines="3"/>Or:
<filterreader classname="org.apache.tools.ant.filters.HeadFilter"> <param name="lines" value="3"/> </filterreader>
Field Summary |
Fields inherited from class java.io.FilterReader |
in |
Fields inherited from class java.io.Reader |
lock |
Constructor Summary | |
HeadFilter()
Constructor for "dummy" instances. |
|
HeadFilter(java.io.Reader in)
Creates a new filtered reader. |
Method Summary | |
java.io.Reader |
chain(java.io.Reader rdr)
Creates a new HeadFilter using the passed in Reader for instantiation. |
int |
read()
Returns the next character in the filtered stream. |
void |
setLines(long lines)
Sets the number of lines to be returned in the filtered stream. |
void |
setSkip(long skip)
Sets the number of lines to be skipped in the filtered stream. |
Methods inherited from class org.apache.tools.ant.filters.BaseParamFilterReader |
getParameters, setParameters |
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 |
read |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public HeadFilter()
BaseFilterReader.BaseFilterReader()
public HeadFilter(java.io.Reader in)
in
- A Reader object providing the underlying stream.
Must not be null
.Method Detail |
public final int read() throws java.io.IOException
read
in class java.io.FilterReader
java.io.IOException
- if the underlying stream throws an IOException
during readingpublic final void setLines(long lines)
lines
- the number of lines to be returned in the filtered streampublic final void setSkip(long skip)
skip
- the number of lines to be skipped in the filtered streampublic final java.io.Reader chain(java.io.Reader rdr)
chain
in interface ChainableReader
rdr
- A Reader object providing the underlying stream.
Must not be null
.
|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |