Examples of ro.isdc.wro.model.resource.processor.ResourcePreProcessor

Package ro.isdc.wro.model.resource.processor

Examples of ro.isdc.wro.model.resource.processor.ResourcePreProcessor

ro.isdc.wro.model.resource.processor.ResourcePreProcessor
Perform actual processing of the resource content from the {@link Reader} and writes the processed content to the{@link Writer}. The processor should focus only on transformation. If a processing fails, it is preferred to propagate the exception, because wro4j can allow custom behavior for this situation. It is possible to treat the exceptions by leaving the processed output unchanged, but in this case you may not benefit of global configuration. @author Alex Objelean @created Created on Nov 19, 2008

  /**
   * {@inheritDoc}
   */
  @Override
  protected ResourcePreProcessor createResourceProcessor() {
    final ResourcePreProcessor processor = new JsHintProcessor() {
      @Override
      public void process(final Resource resource, final Reader reader, final Writer writer)
          throws IOException {
        getProgressIndicator().onProcessingResource(resource);
        // use StringWriter to discard the merged processed result (linting is useful only for reporting errors).

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  /**
   * {@inheritDoc}
   */
  @Override
  protected ResourcePreProcessor createResourceProcessor() {
    final ResourcePreProcessor processor = new CssLintProcessor() {
      @Override
      public void process(final Resource resource, final Reader reader, final Writer writer)
          throws IOException {
        getProgressIndicator().onProcessingResource(resource);
        // use StringWriter to discard the merged processed result (linting is useful only for reporting errors).

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    };
  }


  private ProcessorsFactory createSingleProcessorsFactory() {
    final SimpleProcessorsFactory factory = new SimpleProcessorsFactory();
    final ResourcePreProcessor processor = createResourceProcessor();
    factory.addPreProcessor(processor);
    return factory;
  }

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  /**
   * {@inheritDoc}
   */
  @Override
  protected ResourcePreProcessor createResourceProcessor() {
    final ResourcePreProcessor processor = new JsLintProcessor() {
      @Override
      public void process(final Resource resource, final Reader reader, final Writer writer)
          throws IOException {
        getProgressIndicator().onProcessingResource(resource);
        if (resource != null) {

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   *          a function (closure) invoked for each found import. It will be provided as argument the uri of imported
   *          css.
   */
  private void forEachCssImportApply(final Function<String, ChangeStatus> func, final Resource resource, final Reader reader)
      throws IOException {
    final ResourcePreProcessor processor = createCssImportProcessor(func);
    InjectorBuilder.create(getManagerFactory()).build().inject(processor);
    processor.process(resource, reader, new StringWriter());
  }

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    InjectorBuilder.create(getManagerFactory()).build().inject(processor);
    processor.process(resource, reader, new StringWriter());
  }


  private ResourcePreProcessor createCssImportProcessor(final Function<String, ChangeStatus> func) {
    final ResourcePreProcessor cssImportProcessor = new AbstractCssImportPreProcessor() {
      @Override
      protected void onImportDetected(final String importedUri) {
        getLog().debug("Found @import " + importedUri);
        try {
          final ChangeStatus status = func.apply(importedUri);
          getLog().debug("ChangeStatus for " + importedUri + ": " + status);
          if (ChangeStatus.NOT_CHANGED.equals(status)) {
            remember(Resource.create(importedUri, ResourceType.CSS));
          }
        } catch (final Exception e) {
          getLog().error("Cannot apply a function on @import resource: " + importedUri + ". Ignoring it.", e);
        }
        remember(Resource.create(importedUri, ResourceType.CSS));
      }


      @Override
      protected String doTransform(final String cssContent, final List<Resource> foundImports)
          throws IOException {
        // no need to build the content, since we are interested in finding imported resources only
        return "";
      }


      @Override
      public String toString() {
        return CssImportPreProcessor.class.getSimpleName();
      }
    };
    final ResourcePreProcessor processor = new ExceptionHandlingProcessorDecorator(cssImportProcessor) {
      @Override
      protected boolean isIgnoreFailingProcessor() {
        return true;
      }
    };

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  }




  @Test
  public void shouldBeThreadSafe() throws Exception {
    final ResourcePreProcessor processor = new NodeTypeScriptProcessor() {
      @Override
      protected void onException(final Exception e, final String content) {
        throw WroRuntimeException.wrap(e);
      }
    };
    final Callable<Void> task = new Callable<Void>() {
      @Override
      public Void call() {
        try {
          processor.process(null, new StringReader("class Animal {}"), new StringWriter());
        } catch (final Exception e) {
          throw new RuntimeException(e);
        }
        return null;
      }

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   * Test that processing invalid less css produces exceptions
   */
  @Test
  public void shouldFailWhenInvalidTypeScriptIsProcessed()
      throws Exception {
    final ResourcePreProcessor processor = new NodeTypeScriptProcessor();
    final URL url = getClass().getResource("typescript");


    final File testFolder = new File(url.getFile(), "invalid");
    WroTestUtils.forEachFileInFolder(testFolder, new Function<File, Void>() {
      @Override
      public Void apply(final File input)
          throws Exception {
        try {
          processor.process(null, new FileReader(input), new StringWriter());
          Assert.fail("Expected to fail, but didn't");
        } catch (final WroRuntimeException e) {
          //expected to throw exception, continue
        }
        return null;

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  }


  @Test
  public void shouldMinimizeWhenUsedAsLazyProcessor()
      throws Exception {
    final ResourcePreProcessor victim = new LazyProcessorDecorator(new LazyInitializer<ResourcePreProcessor>() {
      @Override
      protected ResourcePreProcessor initialize() {
        return new GoogleClosureCompressorProcessor();
      }
    });
    WroTestUtils.createInjector().inject(victim);
    final StringWriter sw = new StringWriter();
    victim.process(null, new StringReader("alert(1);"), sw);
    assertEquals("alert(1);", sw.toString());
  }

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    assertEquals(0, Context.countActive());
  }


  @Before
  public void setUp() {
    final ResourcePreProcessor decoratedProcessor = new JSMinProcessor();
    processor = CopyrightKeeperProcessorDecorator.decorate(decoratedProcessor);
    Context.set(Context.standaloneContext());
    WroTestUtils.createInjector().inject(decoratedProcessor);
  }

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