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com.googlecode.htmlcompressor.compressor
Class YuiJavaScriptCompressor

java.lang.Object
  extended by com.googlecode.htmlcompressor.compressor.YuiJavaScriptCompressor
All Implemented Interfaces:
Compressor
public class YuiJavaScriptCompressor
extends Object
implements Compressor

Basic JavaScript compressor implementation using Yahoo YUI Compressor that could be used by HtmlCompressor for inline JavaScript compression.

Author:
Sergiy Kovalchuk
See Also:
HtmlCompressor.setJavaScriptCompressor(Compressor), Yahoo YUI Compressor

Nested Class Summary
static class YuiJavaScriptCompressor.DefaultErrorReporter
          Default ErrorReporter implementation that uses System.err stream for error reporting.
 
Constructor Summary
YuiJavaScriptCompressor()
           
 
Method Summary
 String compress(String source)
          The main method that compresses the given source and returns a compressed result.
 org.mozilla.javascript.ErrorReporter getErrorReporter()
          Returns ErrorReporter used by YUI Compressor to log error messages during JavasSript compression
 int getLineBreak()
          Returns number of symbols per line Yahoo YUI Compressor will use during JavaScript compression.
 boolean isDisableOptimizations()
          Returns true if Yahoo YUI Compressor will disable all the built-in micro optimizations during JavaScript compression.
 boolean isNoMunge()
          Returns true if Yahoo YUI Compressor will only minify javascript without obfuscating local symbols.
 boolean isPreserveAllSemiColons()
          Returns true if Yahoo YUI Compressor will preserve unnecessary semicolons during JavaScript compression.
 void setDisableOptimizations(boolean disableOptimizations)
          Tells Yahoo YUI Compressor to disable all the built-in micro optimizations during JavaScript compression.
 void setErrorReporter(org.mozilla.javascript.ErrorReporter errorReporter)
          Sets ErrorReporter that YUI Compressor will use for reporting errors during JavaScript compression.
 void setLineBreak(int lineBreak)
          Tells Yahoo YUI Compressor to break lines after the specified number of symbols during JavaScript compression.
 void setNoMunge(boolean noMunge)
          Tells Yahoo YUI Compressor to only minify javascript without obfuscating local symbols.
 void setPreserveAllSemiColons(boolean preserveAllSemiColons)
          Tells Yahoo YUI Compressor to preserve unnecessary semicolons during JavaScript compression.
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

YuiJavaScriptCompressor

public YuiJavaScriptCompressor()
Method Detail

compress

public String compress(String source)
Description copied from interface: Compressor
The main method that compresses the given source and returns a compressed result.

Specified by:
compress in interface Compressor
Parameters:
source - The source to compress.
Returns:
Compressed result.

isNoMunge

public boolean isNoMunge()
Returns true if Yahoo YUI Compressor will only minify javascript without obfuscating local symbols. This corresponds to --nomunge command line option.

Returns:
nomunge parameter value used for JavaScript compression.
See Also:
Yahoo YUI Compressor

setNoMunge

public void setNoMunge(boolean noMunge)
Tells Yahoo YUI Compressor to only minify javascript without obfuscating local symbols. This corresponds to --nomunge command line option. This option has effect only if JavaScript compression is enabled. Default is false.

Parameters:
noMunge - set true to enable nomunge mode
See Also:
Yahoo YUI Compressor

isPreserveAllSemiColons

public boolean isPreserveAllSemiColons()
Returns true if Yahoo YUI Compressor will preserve unnecessary semicolons during JavaScript compression. This corresponds to --preserve-semi command line option.

Returns:
preserve-semi parameter value used for JavaScript compression.
See Also:
Yahoo YUI Compressor

setPreserveAllSemiColons

public void setPreserveAllSemiColons(boolean preserveAllSemiColons)
Tells Yahoo YUI Compressor to preserve unnecessary semicolons during JavaScript compression. This corresponds to --preserve-semi command line option. This option has effect only if JavaScript compression is enabled. Default is false.

Parameters:
preserveAllSemiColons - set true to enable preserve-semi mode
See Also:
Yahoo YUI Compressor

isDisableOptimizations

public boolean isDisableOptimizations()
Returns true if Yahoo YUI Compressor will disable all the built-in micro optimizations during JavaScript compression. This corresponds to --disable-optimizations command line option.

Returns:
disable-optimizations parameter value used for JavaScript compression.
See Also:
Yahoo YUI Compressor

setDisableOptimizations

public void setDisableOptimizations(boolean disableOptimizations)
Tells Yahoo YUI Compressor to disable all the built-in micro optimizations during JavaScript compression. This corresponds to --disable-optimizations command line option. This option has effect only if JavaScript compression is enabled. Default is false.

Parameters:
disableOptimizations - set true to enable disable-optimizations mode
See Also:
Yahoo YUI Compressor

getLineBreak

public int getLineBreak()
Returns number of symbols per line Yahoo YUI Compressor will use during JavaScript compression. This corresponds to --line-break command line option.

Returns:
line-break parameter value used for JavaScript compression.
See Also:
Yahoo YUI Compressor

setLineBreak

public void setLineBreak(int lineBreak)
Tells Yahoo YUI Compressor to break lines after the specified number of symbols during JavaScript compression. This corresponds to --line-break command line option. This option has effect only if JavaScript compression is enabled. Default is -1 to disable line breaks.

Parameters:
lineBreak - set number of symbols per line
See Also:
Yahoo YUI Compressor

getErrorReporter

public org.mozilla.javascript.ErrorReporter getErrorReporter()
Returns ErrorReporter used by YUI Compressor to log error messages during JavasSript compression

Returns:
ErrorReporter used by YUI Compressor to log error messages during JavasSript compression
See Also:
Yahoo YUI Compressor, Error Reporter Interface

setErrorReporter

public void setErrorReporter(org.mozilla.javascript.ErrorReporter errorReporter)
Sets ErrorReporter that YUI Compressor will use for reporting errors during JavaScript compression. If no ErrorReporter was provided YuiJavaScriptCompressor.DefaultErrorReporter will be used which reports errors to System.err stream.

Parameters:
errorReporter - ErrorReporter that will be used by YUI Compressor
See Also:
YuiJavaScriptCompressor.DefaultErrorReporter, Yahoo YUI Compressor, ErrorReporter Interface
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Copyright © 2009-2011 Sergiy Kovalchuk. All Rights Reserved.