org.weborganic.bastille.util
Class JSMin

java.lang.Object
  org.weborganic.bastille.util.JSMin

public final class JSMin
extends Object

A JavaScript minimiser.

This class is a slightly modified version of the work done by John Reilly who initially adapted Douglas Crockford's C version of his JavaScript minimiser.

Nested Class Summary

static class	JSMin.UnterminatedCommentException A comment that does not terminate properly.
static class	JSMin.UnterminatedRegExpLiteralException A regular expression that does not terminate properly.
static class	JSMin.UnterminatedStringLiteralException A string that does not terminate properly.

Constructor Summary

JSMin(InputStream in, OutputStream out)
Creates a new JavaScript minimiser for the specified I/O.

Method Summary

void	jsmin() Main JSMin method.
static void	main(String[] arg) To invoke the minimizer on the command line.

Methods inherited from class java.lang.Object

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

Constructor Detail

JSMin

public JSMin(InputStream in,
             OutputStream out)

Creates a new JavaScript minimiser for the specified I/O.

Parameters:

in - The JavaScript to minimise.

out - The minimised script.

Method Detail

jsmin

public void jsmin()
           throws IOException,
                  ParsingException

Main JSMin method.

Copy the input to the output, deleting the characters which are insignificant to JavaScript:

• Comments will be removed.
• Tabs will be replaced with spaces.
• Carriage returns will be replaced with line feeds.
• Most spaces and line feeds will be removed.

Throws:

IOException - If an error occurs while reading the input or writing on the output.

ParsingException - If an error occurs while parsing the JavaScript (minimizing is not possible then).

main

public static void main(String[] arg)

To invoke the minimizer on the command line.

Parameters:

arg - name of file to minimize