  All Packages  Class Hierarchy  This Package  Previous  Next  Index

Class com.oroinc.text.awk.AwkStreamInput

java.lang.Object
   |
   +----com.oroinc.text.awk.AwkStreamInput

public final class AwkStreamInput
extends Object

The AwkStreamInput class is used to look for pattern matches in an input stream (actually a java.io.Reader instance) in conjunction with the AwkMatcher class. It is called AwkStreamInput instead of AwkInputStream to stress that it is a form of streamed input for the AwkMatcher class to use rather than a subclass of InputStream. AwkStreamInput performs special internal buffering to accelerate pattern searches through a stream. You can determine the size of this buffer and how it grows by using the appropriate constructor.

If you want to perform line by line matches on an input stream, you should use a DataInput or BufferedReader instance in conjunction with one of the PatternMatcher methods taking a String, char[], or PatternMatcherInput as an argument. The DataInput and BufferedReader readLine() methods will likely be implemented as native methods and therefore more efficient than supporting line by line searching within AwkStreamInput.

In the future the programmer will be able to set this class to save all the input it sees so that it can be accessed later. This will avoid having to read a stream more than once for whatever reason.

See Also:: AwkMatcher

AwkStreamInput(Reader): Creates an AwkStreamInput instance bound to a Reader with an initial buffer size and default buffer increment of 2048 bytes.
AwkStreamInput(Reader, int): Creates an AwkStreamInput instance bound to a Reader with a specified initial buffer size and default buffer increment.

endOfStream()

AwkStreamInput

 public AwkStreamInput(Reader input,
                       int bufferIncrement)

Creates an AwkStreamInput instance bound to a Reader with a specified initial buffer size and default buffer increment.

Parameters:: input - The InputStream to associate with the AwkStreamInput instance.; bufferIncrement - The initial buffer size and the default buffer increment to use when the input buffer has to be increased in size.

AwkStreamInput

 public AwkStreamInput(Reader input)

Creates an AwkStreamInput instance bound to a Reader with an initial buffer size and default buffer increment of 2048 bytes.

Parameters:: input - The InputStream to associate with the AwkStreamInput instance.

endOfStream

 public boolean endOfStream()

  All Packages  Class Hierarchy  This Package  Previous  Next  Index