Task source code

YUICompressTask.java (text/plain), 11.25 KB, created by Philippe Mouawad on 2007-11-19 13:48:57 UTC

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Description: Task source code

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Creator: Philippe Mouawad

Created: 2007-11-19 13:48:57 UTC

Size: 11.25 KB

patch

obsolete

>// com.yahoo.platform.yui.compressor.YUICompressTask >package com.yahoo.platform.yui.compressor; > >import java.io.BufferedReader; >import java.io.File; >import java.io.FileInputStream; >import java.io.FileOutputStream; >import java.io.FileReader; >import java.io.IOException; >import java.io.InputStream; >import java.io.OutputStream; >import java.io.OutputStreamWriter; >import java.io.Reader; >import java.io.Writer; >import java.util.ArrayList; >import java.util.Iterator; >import java.util.List; > >import org.apache.tools.ant.BuildException; >import org.apache.tools.ant.DirectoryScanner; >import org.apache.tools.ant.Project; >import org.apache.tools.ant.Task; >import org.apache.tools.ant.types.FileSet; >import org.mozilla.javascript.ErrorReporter; >import org.mozilla.javascript.EvaluatorException; > >/** > * ANT Task used to compress a set of files to a target folder. > * @author <a href="mailto:p.mouawad@ubik-ingenierie.com">Philippe Mouawad</a> > * www.ubik-ingenierie.com > * > */ >public class YUICompressTask extends Task{ > > private Boolean warn = Boolean.FALSE; > private Boolean munge = Boolean.FALSE; > private Boolean preserveAllSemiColons = Boolean.TRUE; > private Boolean preserveStringLitterals = Boolean.TRUE; > private Integer lineBreak = null; > private String outputSuffix; > private File outputFolder; > private String charset; > private List inputFileSet = new ArrayList(); > > /** > * > */ > public YUICompressTask() { > super(); > } > > /** > * @see org.apache.tools.ant.Task#execute() > */ > public void execute() throws BuildException { > > validate(); > > for (Iterator iter = inputFileSet.iterator(); iter.hasNext();) > { > FileSet fs = (FileSet)iter.next(); > DirectoryScanner ds = fs.getDirectoryScanner(getProject()); > File base = ds.getBasedir(); > String[] includedFiles = ds.getIncludedFiles(); > for(int i=0; i<includedFiles.length; i++) { > includedFiles[i] = includedFiles[i].replace('\\', '/'); > > String includePrefix = ""; > if(includedFiles[i].lastIndexOf('/') != -1) > { > includePrefix = includedFiles[i].substring(0,includedFiles[i].lastIndexOf('/')); > } > File found = new File(base, includedFiles[i]); > File targetFolder = null; > if(includePrefix.length()>0) > { > targetFolder = new File(outputFolder,includePrefix); > } > else > { > targetFolder = new File(outputFolder.getAbsolutePath()); > } > targetFolder.mkdirs(); > File outputFile = null; > System.out.println(includedFiles[i] +":" + targetFolder.getAbsolutePath()); > if(outputSuffix!=null && !(outputSuffix.trim().length()==0)) > { > String theFileName = found.getName(); > int lastIndex = theFileName.lastIndexOf("."); > > outputFile = new File(targetFolder, theFileName.substring(0, lastIndex) + outputSuffix + > theFileName.substring(lastIndex)); > } > else > { > String theFileName = found.getName(); > outputFile = new File(targetFolder, theFileName); > } > > try { > doCompression(found, outputFile); > } catch (Exception e) { > log("Error compressing "+found.getAbsolutePath() + ", "+e.getMessage(), Project.MSG_ERR); > throw new BuildException("Error compressing "+found.getAbsolutePath() + ", "+e.getMessage(), e); > } > } > } > } > > /** > * > */ > private void validate() { > if(charset==null) > { > charset = System.getProperty("file.encoding"); > if(charset == null) > { > charset = "UTF-8"; > } > } > > this.munge = (this.munge != null) ? munge : Boolean.FALSE; > this.lineBreak = (this.lineBreak==null) ? new Integer(-1) : this.lineBreak; > } > > > /** > * @param src > * @param dst > * @throws IOException > */ > private static final void copy(File src, File dst) throws IOException > { > InputStream in = null; > OutputStream out = null; > try > { > in = new FileInputStream(src); > out = new FileOutputStream(dst); > // Transfer bytes from in to out > byte[] buf = new byte[1024]; > int len = 0; > while ((len = in.read(buf)) > 0) > { > out.write(buf, 0, len); > } > } > finally > { > if (in!=null) > { > try { > in.close(); > } catch (IOException e) { > // NOOP > } > } > if (out!=null) > { > try { > out.close(); > } catch (IOException e) { > // NOOP > } > } > } > } > > > /** > * @param string > * @param outputFile > */ > private void doCompression(File inputFile, File outputFile) > throws Exception > { > log("Compressing " + inputFile.getAbsolutePath() + " to " + outputFile.getAbsolutePath()); > Reader reader = null; > Writer writer = null; > File tempFile = null; > outputFile.getParentFile().mkdirs(); > try > { > if(inputFile.getAbsolutePath().equals(outputFile.getAbsolutePath())) > { > log("Input and Output file are the same, creating a copy"); > tempFile = File.createTempFile("temp", > inputFile.getName().substring(inputFile.getName().lastIndexOf("."))); > log("Copying "+inputFile.getAbsolutePath() + " to " + tempFile.getAbsolutePath()); > copy(inputFile, tempFile); > reader = new BufferedReader(new FileReader(tempFile)); > } > else > { > reader = new BufferedReader(new FileReader(inputFile)); > } > > if(outputFile.getName().endsWith(".js")) > { > try { > JavaScriptCompressor compressor = new JavaScriptCompressor(reader, > new ErrorReporter() { > public void warning(String message, String sourceName, > int line, String lineSource, int lineOffset) { > if (line < 0) { > log("\n[WARNING] " + message); > } else { > log("\n" + line + ':' + lineOffset + ':' + message); > } > } > > public void error(String message, String sourceName, > int line, String lineSource, int lineOffset) { > if (line < 0) { > log("\n[ERROR] " + message); > } else { > log("\n" + line + ':' + lineOffset + ':' + message); > } > } > > public EvaluatorException runtimeError(String message, String sourceName, > int line, String lineSource, int lineOffset) { > error(message, sourceName, line, lineSource, lineOffset); > return new EvaluatorException(message); > } > }); > > // Close the input stream first, and then open the output stream, > // in case the output file should override the input file. > writer = new OutputStreamWriter(new FileOutputStream(outputFile), charset); > > compressor.compress(writer, > lineBreak.intValue(), > munge.booleanValue(), > warn.booleanValue(), > preserveAllSemiColons.booleanValue(), > preserveStringLitterals.booleanValue()); > > } catch (EvaluatorException e) { > > e.printStackTrace(); > // Return a special error code used specifically by the web front-end. > System.exit(2); > } > > } > else if (outputFile.getName().endsWith(".css")) > { > CssCompressor compressor = new CssCompressor(reader); > // Close the input stream first, and then open the output stream, > // in case the output file should override the input file. > writer = new OutputStreamWriter(new FileOutputStream(outputFile), charset); > compressor.compress(writer, getLineBreak()!=null ? getLineBreak().intValue() : -1); > } > } > finally > { > if(reader!=null) > { > try { > reader.close(); > } catch (IOException e) { > // NOOP > } > } > if(writer!=null) > { > try { > writer.close(); > } catch (IOException e) { > // NOOP > } > } > if(tempFile!=null) > { > tempFile.delete(); > } > > } > } > > /** > * @param list {@link List} > * @return {@link String} Command line > */ > private String getLine(List list) { > StringBuffer buffer = new StringBuffer(); > for (Iterator iter = list.iterator(); iter.hasNext();) { > String element = (String) iter.next(); > buffer.append(element); > buffer.append(" "); > } > return buffer.toString(); > } > > > > /** > * @param fileset > */ > public void addFileset(FileSet fileset) { > inputFileSet.add(fileset); > } > > /** > * @return the charset > */ > public String getCharset() { > return charset; > } > > /** > * @param charset the charset to set > */ > public void setCharset(String charset) { > this.charset = charset; > } > > /** > * @return the lineBreak > */ > public Integer getLineBreak() { > return lineBreak; > } > > /** > * @param lineBreak the lineBreak to set > */ > public void setLineBreak(Integer lineBreak) { > this.lineBreak = lineBreak; > } > > /** > * @return the munge > */ > public Boolean getMunge() { > return munge; > } > > /** > * @param munge the munge to set > */ > public void setMunge(Boolean munge) { > this.munge = munge; > } > > /** > * @return the outputFolder > */ > public File getOutputFolder() { > return outputFolder; > } > > /** > * @param outputFolder the outputFolder to set > */ > public void setOutputFolder(File outputFolder) { > this.outputFolder = outputFolder; > } > > /** > * @return the outputSuffix > */ > public String getOutputSuffix() { > return outputSuffix; > } > > /** > * @param outputSuffix the outputSuffix to set > */ > public void setOutputSuffix(String outputSuffix) { > this.outputSuffix = outputSuffix; > } > > /** > * @return the preserveAllSemiColons > */ > public Boolean getPreserveAllSemiColons() { > return preserveAllSemiColons; > } > > /** > * @param preserveAllSemiColons the preserveAllSemiColons to set > */ > public void setPreserveAllSemiColons(Boolean preserveAllSemiColons) { > this.preserveAllSemiColons = preserveAllSemiColons; > } > > /** > * @return the preserveStringLitterals > */ > public Boolean getPreserveStringLitterals() { > return preserveStringLitterals; > } > > /** > * @param preserveStringLitterals the preserveStringLitterals to set > */ > public void setPreserveStringLitterals(Boolean preserveStringLitterals) { > this.preserveStringLitterals = preserveStringLitterals; > } > > /** > * @return the warn > */ > public Boolean getWarn() { > return warn; > } > > /** > * @param warn the warn to set > */ > public void setWarn(Boolean warn) { > this.warn = warn; > } >} View Attachment As Raw

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