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nextapp.echoservlet.util
Class JavaScriptCompressor  

java.lang.Object
  nextapp.echoservlet.util.JavaScriptCompressor

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public class JavaScriptCompressor

extends java.lang.Object

Compresses the size of JavaScript resource files by removing comments and white space.

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Field Summary
private static char	CARRIAGE_RETURN
private static char	LINE_FEED
private static char	SPACE

 

Constructor Summary
private	JavaScriptCompressor()           Non-instantiable class.

 

Method Summary
static java.lang.String	compress(java.lang.String script)           Compresses a JavaScript file.
private static void	removeBoxComments(java.lang.StringBuffer buffer)           Remove Box comments.
private static void	removeCharacterAfterAnother(java.lang.StringBuffer buffer, char charToRemove, char charBefore)           Removes a character after another.
private static void	removeCharacterBeforeAnother(java.lang.StringBuffer buffer, char charToRemove, char charAfter)           Removes one character before another.
private static void	removeLineComments(java.lang.StringBuffer buffer)           Removes line comments.
private static void	removeMultipleCharacters(java.lang.StringBuffer buffer, char charToRemove)           Removes duplicated characters.
private static java.lang.String	replaceCRWithLF(java.lang.String string)           Replaces all Carriage Return characters with a Line Feeds.
private static void	replaceCtrlWithSpaces(java.lang.StringBuffer buffer)           Replaces all Control characters except Linefeeds with Spaces.

 

Methods inherited from class java.lang.Object

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

 

Field Detail

LINE_FEED

private static final char LINE_FEED

See Also:

Constant Field Values

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CARRIAGE_RETURN

private static final char CARRIAGE_RETURN

See Also:

Constant Field Values

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SPACE

private static final char SPACE

See Also:

Constant Field Values

Constructor Detail

JavaScriptCompressor

private JavaScriptCompressor()

Non-instantiable class.

Method Detail

compress

public static java.lang.String compress(java.lang.String script)

Compresses a JavaScript file.

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replaceCRWithLF

private static java.lang.String replaceCRWithLF(java.lang.String string)

Replaces all Carriage Return characters with a Line Feeds.

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replaceCtrlWithSpaces

private static void replaceCtrlWithSpaces(java.lang.StringBuffer buffer)

Replaces all Control characters except Linefeeds with Spaces.

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removeLineComments

private static void removeLineComments(java.lang.StringBuffer buffer)

Removes line comments.

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removeBoxComments

private static void removeBoxComments(java.lang.StringBuffer buffer)

Remove Box comments.

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removeMultipleCharacters

private static void removeMultipleCharacters(java.lang.StringBuffer buffer,
                                             char charToRemove)

Removes duplicated characters.

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removeCharacterBeforeAnother

private static void removeCharacterBeforeAnother(java.lang.StringBuffer buffer,
                                                 char charToRemove,
                                                 char charAfter)

Removes one character before another.

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removeCharacterAfterAnother

private static void removeCharacterAfterAnother(java.lang.StringBuffer buffer,
                                                char charToRemove,
                                                char charBefore)

Removes a character after another.

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