Package org.broadleafcommerce.common.resource.service

Class GoogleClosureJavascriptMinificationServiceImpl

java.lang.Object

org.broadleafcommerce.common.resource.service.GoogleClosureJavascriptMinificationServiceImpl

All Implemented Interfaces:

JavascriptMinificationService

@Service("blJavascriptMinificationService")
public class GoogleClosureJavascriptMinificationServiceImpl
extends Object
implements JavascriptMinificationService

Javascript minification service implemented using the Google Closure Compiler This will be used for minification if the Google Closure Compiler dependency is included in the project

This library also supports extra aggressive minification, transpiling, code optimizing, and bundleing

• minify.closure.compiler.languageIn - Sets ECMAScript version to use for the input.
  Options: ECMASCRIPT3, ECMASCRIPT5, ECMASCRIPT5_STRICT, ECMASCRIPT6_TYPED (experimental), ECMASCRIPT_2015, ECMASCRIPT_2016, ECMASCRIPT_2017, ECMASCRIPT_NEXT
  Default: ECMASCRIPT5
• minify.closure.compiler.languageOut - Sets ECMAScript version to use for the output.
  Options: ECMASCRIPT3, ECMASCRIPT5, ECMASCRIPT5_STRICT, ECMASCRIPT6_TYPED (experimental), ECMASCRIPT_2015, ECMASCRIPT_2016, ECMASCRIPT_2017, ECMASCRIPT_NEXT, NO_TRANSPILE
  Default: NO_TRANSPILE
• minify.closure.compiler.warningLevel - Warnings level. Possible values: QUIET, DEFAULT, VERBOSE
  Default: SILENT

Author:

Jay Aisenbrey (cja769)

Field Summary

Fields

Modifier and Type	Field	Description
protected com.google.javascript.jscomp.CompilerOptions.LanguageMode	languageIn
protected com.google.javascript.jscomp.CompilerOptions.LanguageMode	languageOut
protected Boolean	strictMode
protected String	warningLevel

Constructor Summary

Constructors

Constructor	Description
GoogleClosureJavascriptMinificationServiceImpl(String compilerLanguageIn, String compilerLanguageOut)

Method Summary

Modifier and Type	Method	Description
protected String	compileJs(com.google.javascript.jscomp.SourceFile input, String filename)
protected com.google.javascript.jscomp.Compiler	getCompiler()
protected com.google.javascript.jscomp.CompilerOptions	getCompilerOptions()
void	minifyJs(String filename, Reader reader, Writer writer)	Minifies the file in "reader" and writes the minified version to "writer"

Methods inherited from class java.lang.Object

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

Field Details

warningLevel

@Value("${minify.closure.compiler.warningLevel:QUIET}")
protected String warningLevel

strictMode

@Value("${minify.closure.compiler.strictMode:false}")
protected Boolean strictMode

languageIn

protected com.google.javascript.jscomp.CompilerOptions.LanguageMode languageIn

languageOut

protected com.google.javascript.jscomp.CompilerOptions.LanguageMode languageOut

Constructor Details

GoogleClosureJavascriptMinificationServiceImpl

public GoogleClosureJavascriptMinificationServiceImpl(@Value("${minify.closure.compiler.languageIn:ECMASCRIPT5}")
 String compilerLanguageIn,
 @Value("${minify.closure.compiler.languageOut:NO_TRANSPILE}")
 String compilerLanguageOut)

Method Details

minifyJs

public void minifyJs(String filename,
 Reader reader,
 Writer writer)
              throws ResourceMinificationException

Description copied from interface: JavascriptMinificationService

Minifies the file in "reader" and writes the minified version to "writer"

Specified by:

minifyJs in interface JavascriptMinificationService

Parameters:

filename - Name of the file to be minified

reader - The original file

writer - The writer that the minified version of the file in "reader" will be written to

Throws:

ResourceMinificationException - Failure to successfully minify the bytes in "reader"

compileJs

protected String compileJs(com.google.javascript.jscomp.SourceFile input,
 String filename)
                    throws ResourceMinificationException,
IOException

Throws:

ResourceMinificationException

IOException

getCompiler

protected com.google.javascript.jscomp.Compiler getCompiler()

getCompilerOptions

protected com.google.javascript.jscomp.CompilerOptions getCompilerOptions()