org.apache.tools.ant.filters
Class PrefixLines
java.lang.Object
   java.io.Reader
java.io.Reader
       java.io.FilterReader
java.io.FilterReader
           org.apache.tools.ant.filters.BaseFilterReader
org.apache.tools.ant.filters.BaseFilterReader
               org.apache.tools.ant.filters.BaseParamFilterReader
org.apache.tools.ant.filters.BaseParamFilterReader
                   org.apache.tools.ant.filters.PrefixLines
org.apache.tools.ant.filters.PrefixLines
- All Implemented Interfaces: 
- java.io.Closeable, java.lang.Readable, ChainableReader, Parameterizable
- public final class PrefixLines 
- extends BaseParamFilterReader- implements ChainableReader
Attaches a prefix to every line.
 Example:
 
<prefixlines prefix="Foo"/>
 Or:
 <filterreader classname="org.apache.tools.ant.filters.PrefixLines">
  <param name="prefix" value="Foo"/>
 </filterreader>
 
| Fields inherited from class java.io.FilterReader | 
| in | 
 
| Fields inherited from class java.io.Reader | 
| lock | 
 
| Constructor Summary | 
| PrefixLines()Constructor for "dummy" instances.
 | 
| PrefixLines(java.io.Reader in)Creates a new filtered reader.
 | 
 
| Method Summary | 
|  java.io.Reader | chain(java.io.Reader rdr)Creates a new PrefixLines filter using the passed in
 Reader for instantiation.
 | 
|  int | read()Returns the next character in the filtered stream.
 | 
|  void | setPrefix(java.lang.String prefix)Sets the prefix to add at the start of each input line.
 | 
 
 
 
| Methods inherited from class java.io.FilterReader | 
| close, mark, markSupported, ready, reset | 
 
| Methods inherited from class java.io.Reader | 
| read, read | 
 
| Methods inherited from class java.lang.Object | 
| clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait | 
 
PrefixLines
public PrefixLines()
- Constructor for "dummy" instances.
 
- See Also:
- BaseFilterReader.BaseFilterReader()
 
PrefixLines
public PrefixLines(java.io.Reader in)
- Creates a new filtered reader.
 
- Parameters:
- in- A Reader object providing the underlying stream.
           Must not be- null.
 
read
public int read()
         throws java.io.IOException
- Returns the next character in the filtered stream. One line is read
 from the original input, and the prefix added. The resulting
 line is then used until it ends, at which point the next original line
 is read, etc.
 
- 
- Overrides:
- readin class- java.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
 
setPrefix
public void setPrefix(java.lang.String prefix)
- Sets the prefix to add at the start of each input line.
 
- 
 
- 
- Parameters:
- prefix- The prefix to add at the start of each input line.
               May be- null, in which case no prefix
               is added.
 
chain
public java.io.Reader chain(java.io.Reader rdr)
- Creates a new PrefixLines filter using the passed in
 Reader for instantiation.
 
- 
- Specified by:
- chainin 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