lazyj.viewers

Class Viewer

java.lang.Object

lazyj.viewers.Viewer

Direct Known Subclasses:

HTMLViewer, PDFViewer, RTFViewer, SPAMViewer, TXTViewer, WordViewer

public abstract class Viewer
extends java.lang.Object

Viewers are used to transform some input files into String representations. Usually they extract the contents from these files using appropriate tools (eg. for HTML something like "links" or "lynx" and so on)

Since:

2006-10-15

Author:

root

Field Summary

Fields

Modifier and Type	Field and Description
protected java.io.InputStream	isSource The InputStream to read the contents of the file from.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Viewer(java.lang.Object o) Constructor to be called from the extensions of this class, it looks at the input object and builds the actual input stream from it.

Method Summary

Methods

Modifier and Type	Method and Description
protected java.lang.String	getProgramOutput(java.lang.String sProgram) Executes the given program and passes the contents of the InputStream to the programs's standard in and returns the text that the program produces at its standard output.
abstract java.lang.String	getString() This is to be implemented by every viewer.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

isSource

protected java.io.InputStream isSource

The InputStream to read the contents of the file from.

Constructor Detail

Viewer

protected Viewer(java.lang.Object o)

Constructor to be called from the extensions of this class, it looks at the input object and builds the actual input stream from it. If it is a String then it will build a FileInputStream based on the file indicated by this parameter. If it is an InputStream than it will just use it. Otherwise the isSource will remain null.

Parameters:

o - input method

Method Detail

getString

public abstract java.lang.String getString()

This is to be implemented by every viewer.

Returns:

the contents of the original file

getProgramOutput

protected final java.lang.String getProgramOutput(java.lang.String sProgram)

Executes the given program and passes the contents of the InputStream to the programs's standard in and returns the text that the program produces at its standard output.

Parameters:

sProgram - program to call

Returns:

the output of the program