org.apache.tools.ant.filters
Class PrefixLines
- ChainableReader, Parameterizable
public final class PrefixLines
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>
Reader | chain(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(String prefix) - Sets the prefix to add at the start of each input line.
|
PrefixLines
public PrefixLines()
Constructor for "dummy" instances.
PrefixLines
public PrefixLines(Reader in)
Creates a new filtered reader.
in
- A Reader object providing the underlying stream.
Must not be null
.
chain
public final Reader chain(Reader rdr)
Creates a new PrefixLines filter using the passed in
Reader for instantiation.
- chain in interface ChainableReader
rdr
- A Reader object providing the underlying stream.
Must not be null
.
- a new filter based on this configuration, but filtering
the specified reader
read
public final int read()
throws 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.
- the next character in the resulting stream, or -1
if the end of the resulting stream has been reached
setPrefix
public final void setPrefix(String prefix)
Sets the prefix to add at the start of each input line.
prefix
- The prefix to add at the start of each input line.
May be null
, in which case no prefix
is added.
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