Java JavaScriptCompressor类代码示例

import com.yahoo.platform.yui.compressor.JavaScriptCompressor; //导入依赖的package包/类
/**
 * Constructor: YahooJSCompressor using the property map passed in.
 *
 * @param specifiedCompressorParameters
 */
public YahooJSCompressor(Map<String, Object> specifiedCompressorParameters) throws InstantiationException
{
    try
    {
        new JavaScriptCompressor(new StringReader(""), new YahooJSErrorReporter());
    }
    catch (NoClassDefFoundError ncdf)
    {
        throw new InstantiationException("com.yahoo.platform.yui.compressor.JavaScriptCompressor is not available, assuming Yahoo Compressor is not here from yuicompressor.jar ");
    }
    catch (Exception e)
    {
        // We don't care about this!  The instansiation above is just to ensure that the Yahoo compressor is
        // on the classpath.  If the actual test compression fails we don't need to do anything.
    }
    setCompressorParameters(specifiedCompressorParameters);
}
 

import com.yahoo.platform.yui.compressor.JavaScriptCompressor; //导入依赖的package包/类
public void compressJavaScript(Path input, Path output) throws IOException {
    // yui compressor chokes on empty files
    long size = Files.size(input);
    if (size == 0) {
        if (!Files.exists(output)) {
            Files.createFile(output);
        }
        return;
    }

    Options o = new Options();
    try (Reader in = Files.newBufferedReader(input, Charset.forName(o.charset));
         Writer out = Files.newBufferedWriter(output, Charset.forName(o.charset))) {

        JavaScriptCompressor compressor = new JavaScriptCompressor(in, new YuiCompressorErrorReporter());
        compressor.compress(out, o.lineBreakPos, o.munge, o.verbose, o.preserveAllSemiColons, o.disableOptimizations);
    }
}
 

import com.yahoo.platform.yui.compressor.JavaScriptCompressor; //导入依赖的package包/类
/**
 * Minifies JavaScript by utilising YUI {@link JavaScriptCompressor}.
 *
 * @param bytes - an array of bytes to minify
 * @param linebreak - split long line after a specific column
 * @param munge - obfuscate, not only minify
 * @param verbose - display informational messages and warnings
 * @param preserveAllSemiColons - preserve all semicolons
 * @param disableOptimisations - disable micro optimisations
 * @return minified content as array of bytes
 * @throws IOException
 */
static final byte[] minifyJS(final byte[] bytes, int linebreak, boolean munge, boolean verbose,
		boolean preserveAllSemiColons, boolean disableOptimisations) throws IOException {
	Reader reader = new BufferedReader(new InputStreamReader(new ByteArrayInputStream(bytes)));
	StringWriter writer = new StringWriter();

	try {
		new JavaScriptCompressor(reader, null).compress(writer, linebreak, munge, verbose,
				preserveAllSemiColons, disableOptimisations);
	} catch (IndexOutOfBoundsException e) {
		// handle YUI bug when file is empty or contains comments only
		return new byte[] {};
	} finally {
		if (reader != null) {
			reader.close();
		}
		if (writer != null) {
			writer.close();
		}
	}
	return writer.toString().getBytes("UTF-8");
}
 

import com.yahoo.platform.yui.compressor.JavaScriptCompressor; //导入依赖的package包/类
public void compressJavaScript(final File inputFile, final File outputFile, final YuiCompressorOptions o) throws IOException {
	Reader in = null;
	Writer out = null;
	try {
		in = new InputStreamReader(new FileInputStream(inputFile), o.charset);

		final JavaScriptCompressor compressor = new JavaScriptCompressor(in, new YuiCompressorErrorReporter());
		in.close();
		in = null;

		out = new OutputStreamWriter(new FileOutputStream(outputFile, true), o.charset);
		compressor.compress(out, o.lineBreakPos, o.munge, o.verbose, o.preserveAllSemiColons, o.disableOptimizations);
	} finally {
		IOUtils.closeQuietly(in);
		IOUtils.closeQuietly(out);
	}
}
 

import com.yahoo.platform.yui.compressor.JavaScriptCompressor; //导入依赖的package包/类
/**
 * Javascript compression method, based on yuiCompressor
 * @param content uncompressed JavaScript
 * @return A compressed JavaScript 
 */
public static String cleanupJavaScript(String content) {
	int length = content.length();
	int firstlinefeed = content.indexOf("\n");
	if (firstlinefeed==-1 || (length>255 && firstlinefeed>255)){
		//script seems to be already minified=> skip
		return content;
	}
	Reader reader = new StringReader(content);
	Writer writer = new StringWriter();		
	try {
		JavaScriptCompressor jsc = new JavaScriptCompressor(reader,jsReporter);
		jsc.compress(writer, -1, true, false, false, false);
	    //options: (int linebreak, boolean munge, boolean verbose, boolean preserveAllSemiColons, boolean disableOptimizations)
	} catch (Exception e) {
		return content;
	}
	return writer.toString();				
}
 

import com.yahoo.platform.yui.compressor.JavaScriptCompressor; //导入依赖的package包/类
public YuiJsMinifier(MinifyBuilder builder, IFile srcFile, IFile destFile, 
		OutputStream out, IEclipsePreferences prefs)
	throws IOException, CoreException {
	super (builder);
	preserveSemicolons = prefs.getBoolean(
			PrefsAccess.preferenceKey(srcFile, MinifyBuilder.YUI_PRESERVE_SEMICOLONS), true);
	disableOptimizations = prefs.getBoolean(
			PrefsAccess.preferenceKey(srcFile, MinifyBuilder.YUI_DISABLE_OPTIMIZATIONS), true);
	outCharset = destFile.exists() ? destFile.getCharset() : srcFile.getCharset();
	writer = new OutputStreamWriter(out, outCharset);
	compressor = new JavaScriptCompressor(new BufferedReader(
			new InputStreamReader(srcFile.getContents(), srcFile.getCharset())), 
			new YuiMinifier.MinifyErrorHandler(srcFile));
}
 

import com.yahoo.platform.yui.compressor.JavaScriptCompressor; //导入依赖的package包/类
@Override
public String compressJavaScript(String script) throws Exception {
    StringReader stringReader = new StringReader(script);
    JavaScriptCompressor javaScriptCompressor = new JavaScriptCompressor(stringReader, new YUIErrorReporter());
    StringWriter stringWriter = new StringWriter();
    javaScriptCompressor.compress(stringWriter, linebreak, munge, verbose, preserveAllSemiColons, disableOptimizations);
    String compressedScript = stringWriter.toString();
    return compressedScript;
}
 

import com.yahoo.platform.yui.compressor.JavaScriptCompressor; //导入依赖的package包/类
public String compressJavaScript(String script) throws IOException
{
    StringReader stringReader = new StringReader(script);
    JavaScriptCompressor yuiJavaScriptCompressor = new JavaScriptCompressor(stringReader, new YahooJSErrorReporter());
    StringWriter stringWriter = new StringWriter();
    yuiJavaScriptCompressor.compress(stringWriter, (Integer) compressorParameters.get(PARAMETER_LINEBREAK), (Boolean) compressorParameters.get(PARAMETER_MUNGE),
            (Boolean) compressorParameters.get(PARAMETER_VERBOSE), (Boolean) compressorParameters.get(PARAMETER_PRESERVE_ALL_SEMICOLONS),
            (Boolean) compressorParameters.get(PARAMETER_DISABLE_OPTIMIZATIONS));
    String compressedScript = stringWriter.toString();
    return compressedScript;
}
 

import com.yahoo.platform.yui.compressor.JavaScriptCompressor; //导入依赖的package包/类
public static void compressJavaScript(String inputFilename, String outputFilename, Options o) throws IOException {
    Reader in = null;
    Writer out = null;
    try {
        in = new InputStreamReader(new FileInputStream(inputFilename), o.charset);
        JavaScriptCompressor compressor = new JavaScriptCompressor(in, new YuiCompressorErrorReporter());
        in.close();
        in = null;
        out = new OutputStreamWriter(new FileOutputStream(outputFilename), o.charset);
        compressor.compress(out, o.lineBreakPos, o.munge, o.verbose, o.preserveAllSemiColons, o.disableOptimizations);
    } finally {
        IOUtils.closeQuietly(in);
        IOUtils.closeQuietly(out);
    }
}
 

import com.yahoo.platform.yui.compressor.JavaScriptCompressor; //导入依赖的package包/类
private String compressJs(String content) {
  StringWriter writer = new StringWriter(1024);
  StringReader reader = new StringReader(content);
  try {
    JavaScriptCompressor jsCompressor = createJavaScriptCompressor(reader);
    jsCompressor.compress(writer, _compressorOptions.getLineBreakPosition(), _compressorOptions.isMunge(), _compressorOptions.isWarn(), 
        _compressorOptions.isPreserveAllSemiColons(), !_compressorOptions.isOptimize());
  } catch (IOException ex) {
    s_logger.error("Unexpected IOException", ex);
  }
  return writer.toString();
}
 

import com.yahoo.platform.yui.compressor.JavaScriptCompressor; //导入依赖的package包/类
@Override
public String compress(String source) {
	
	StringWriter result = new StringWriter();
	try {
		JavaScriptCompressor compressor = new JavaScriptCompressor(new StringReader(source), errorReporter);
		compressor.compress(result, lineBreak, !noMunge, false, preserveAllSemiColons, disableOptimizations);
	} catch (IOException e) {
		result.write(source);
		e.printStackTrace();
	}
	return result.toString();
	
}
 

import com.yahoo.platform.yui.compressor.JavaScriptCompressor; //导入依赖的package包/类
private String minifyJs(final String jsSourceCode) throws EvaluatorException,
		IOException {
	JavaScriptCompressor jsc = new JavaScriptCompressor(
			new StringReader(jsSourceCode), this.errorReporter);
	StringWriter sw = new StringWriter();
	jsc.compress(sw, this.jsLinebreakPos, this.jsCompressorMunge,
			this.jsCompressorVerbose, this.jsCompressorPreserveAllSemiColons,
			this.jsCompressordisableOptimizations);
	return sw.toString();

}
 

import com.yahoo.platform.yui.compressor.JavaScriptCompressor; //导入依赖的package包/类
protected void minify(BufferedReader in, BufferedWriter out, String filename, String type) throws IOException {
    if (JS_TYPE.equals(type)) {
        JavaScriptCompressor jsc = new JavaScriptCompressor(in, getLogBasedErrorReporter());
        jsc.compress(out, linebreak, munge, verbose, preserveAllSemiColons, disableOptimizations);
    } else if (CSS_TYPE.equals(type)) {
        CssCompressor cssc = new CssCompressor(in);
        cssc.compress(out, 100);
    }
}
 

import com.yahoo.platform.yui.compressor.JavaScriptCompressor; //导入依赖的package包/类
private void processAdminJS(final File srcDir) throws Exception {
    if (adminJSs.isEmpty()) {
        return;
    }

    final File adminDir = new File(srcDir + File.separator + "admin");

    final List<File> adminJSList = new ArrayList<File>();
    for (final String adminJS : adminJSs) {
        final File adminJSFile = new File(adminDir.getPath() + File.separator + adminJS);
        adminJSList.add(adminJSFile);
    }

    final File latkeAdminJS = merge(adminJSList);

    final File latkeMinAdminJS =
            new File(getTargetDir() + File.separator + "admin" + File.separator + "latkeAdmin" + getSuffix() + ".js");

    getLogger().info("Minimizing [srcPath=" + latkeAdminJS.getPath() + ", targetPath=" + latkeMinAdminJS.getPath() + "]");

    final Reader reader = new InputStreamReader(
            new FileInputStream(latkeAdminJS), "UTF-8");
    final FileOutputStream writerStream = new FileOutputStream(latkeMinAdminJS);
    final Writer writer = new OutputStreamWriter(writerStream, "UTF-8");

    final JavaScriptCompressor compressor = new JavaScriptCompressor(
            reader, new JavaScriptErrorReporter(getLogger(), latkeAdminJS.getName()));
    compressor.compress(writer, -1, munge, verbose, preserveAllSemiColons, disableOptimizations);

    reader.close();
    writer.close();
}
 

import com.yahoo.platform.yui.compressor.JavaScriptCompressor; //导入依赖的package包/类
@Override
public String process(final String filename, final String source, final Config conf)
    throws Exception {
  ErrorReporter reporter = reporter(log, filename, name());
  JavaScriptCompressor compressor = new JavaScriptCompressor(new StringReader(source), reporter);
  StringWriter out = new StringWriter();
  compressor.compress(out, get("linebreakpos"), get("munge"), get("verbose"),
      get("preserve-semi"), get("disable-optimizations"));
  return out.toString();
}