Examples with DeferredFileOutputStream org.apache.commons.io.output.DeferredFileOutputStream used on opensource projects

Example 1 with DeferredFileOutputStream

use of org.apache.commons.io.output.DeferredFileOutputStream in project jforum2 by rafaelsteil.

the class DiskFileItem method getOutputStream.

/**
     * Returns an {@link java.io.OutputStream OutputStream} that can
     * be used for storing the contents of the file.
     *
     * @return An {@link java.io.OutputStream OutputStream} that can be used
     *         for storing the contensts of the file.
     *
     * @exception IOException if an error occurs.
     */
public OutputStream getOutputStream() throws IOException {
    if (dfos == null) {
        File outputFile = getTempFile();
        dfos = new DeferredFileOutputStream(sizeThreshold, outputFile);
    }
    return dfos;
}

Example 2 with DeferredFileOutputStream

use of org.apache.commons.io.output.DeferredFileOutputStream in project maven-plugins by apache.

the class ProcessRemoteResourcesMojo method processResourceBundles.

protected void processResourceBundles(RemoteResourcesClassLoader classLoader, VelocityContext context) throws MojoExecutionException {
    try {
        // CHECKSTYLE_OFF: LineLength
        for (Enumeration<URL> e = classLoader.getResources(BundleRemoteResourcesMojo.RESOURCES_MANIFEST); e.hasMoreElements(); ) {
            URL url = e.nextElement();
            InputStream in = null;
            OutputStream out = null;
            Reader reader = null;
            Writer writer = null;
            try {
                reader = new InputStreamReader(url.openStream());
                RemoteResourcesBundleXpp3Reader bundleReader = new RemoteResourcesBundleXpp3Reader();
                RemoteResourcesBundle bundle = bundleReader.read(reader);
                reader.close();
                reader = null;
                for (String bundleResource : bundle.getRemoteResources()) {
                    String projectResource = bundleResource;
                    boolean doVelocity = false;
                    if (projectResource.endsWith(TEMPLATE_SUFFIX)) {
                        projectResource = projectResource.substring(0, projectResource.length() - 3);
                        doVelocity = true;
                    }
                    // Don't overwrite resource that are already being provided.
                    File f = new File(outputDirectory, projectResource);
                    FileUtils.mkdir(f.getParentFile().getAbsolutePath());
                    if (!copyResourceIfExists(f, projectResource, context)) {
                        if (doVelocity) {
                            DeferredFileOutputStream os = new DeferredFileOutputStream(velocityFilterInMemoryThreshold, f);
                            writer = bundle.getSourceEncoding() == null ? new OutputStreamWriter(os) : new OutputStreamWriter(os, bundle.getSourceEncoding());
                            if (bundle.getSourceEncoding() == null) {
                                // TODO: Is this correct? Shouldn't we behave like the rest of maven and fail
                                // down to JVM default instead ISO-8859-1 ?
                                velocity.mergeTemplate(bundleResource, "ISO-8859-1", context, writer);
                            } else {
                                velocity.mergeTemplate(bundleResource, bundle.getSourceEncoding(), context, writer);
                            }
                            writer.close();
                            writer = null;
                            fileWriteIfDiffers(os);
                        } else {
                            URL resUrl = classLoader.getResource(bundleResource);
                            if (resUrl != null) {
                                FileUtils.copyURLToFile(resUrl, f);
                            }
                        }
                        File appendedResourceFile = new File(appendedResourcesDirectory, projectResource);
                        File appendedVmResourceFile = new File(appendedResourcesDirectory, projectResource + ".vm");
                        if (appendedResourceFile.exists()) {
                            in = new FileInputStream(appendedResourceFile);
                            out = new FileOutputStream(f, true);
                            IOUtil.copy(in, out);
                            out.close();
                            out = null;
                            in.close();
                            in = null;
                        } else if (appendedVmResourceFile.exists()) {
                            reader = new FileReader(appendedVmResourceFile);
                            if (bundle.getSourceEncoding() == null) {
                                writer = new PrintWriter(new FileWriter(f, true));
                            } else {
                                writer = new PrintWriter(new OutputStreamWriter(new FileOutputStream(f, true), bundle.getSourceEncoding()));
                            }
                            Velocity.init();
                            Velocity.evaluate(context, writer, "remote-resources", reader);
                            writer.close();
                            writer = null;
                            reader.close();
                            reader = null;
                        }
                    }
                }
            } finally {
                IOUtil.close(out);
                IOUtil.close(in);
                IOUtil.close(writer);
                IOUtil.close(reader);
            }
        // CHECKSTYLE_ON: LineLength
        }
    } catch (IOException e) {
        throw new MojoExecutionException("Error finding remote resources manifests", e);
    } catch (XmlPullParserException e) {
        throw new MojoExecutionException("Error parsing remote resource bundle descriptor.", e);
    } catch (Exception e) {
        throw new MojoExecutionException("Error rendering velocity resource.", e);
    }
}

Example 3 with DeferredFileOutputStream

use of org.apache.commons.io.output.DeferredFileOutputStream in project maven-plugins by apache.

the class ProcessRemoteResourcesMojo method fileWriteIfDiffers.

/**
     * If the transformation result fits in memory and the destination file already exists
     * then both are compared.
     * <p>If destination file is byte-by-byte equal, then it is not overwritten.
     * This improves subsequent compilation times since upstream plugins property see that
     * the resource was not modified.
     * <p>Note: the method should be called after {@link org.apache.commons.io.output.DeferredFileOutputStream#close}
     *
     * @param outStream Deferred stream
     * @throws IOException
     */
private void fileWriteIfDiffers(DeferredFileOutputStream outStream) throws IOException {
    File file = outStream.getFile();
    if (outStream.isThresholdExceeded()) {
        getLog().info("File " + file + " was overwritten due to content limit threshold " + outStream.getThreshold() + " reached");
        return;
    }
    boolean needOverwrite = true;
    if (file.exists()) {
        InputStream is = null;
        try {
            is = new FileInputStream(file);
            final InputStream newContents = new ByteArrayInputStream(outStream.getData());
            needOverwrite = !IOUtil.contentEquals(is, newContents);
            if (getLog().isDebugEnabled()) {
                getLog().debug("File " + file + " contents " + (needOverwrite ? "differs" : "does not differ"));
            }
            is.close();
            is = null;
        } finally {
            IOUtil.close(is);
        }
    }
    if (!needOverwrite) {
        getLog().info("File " + file + " is up to date");
        return;
    }
    getLog().info("Writing " + file);
    OutputStream os = new FileOutputStream(file);
    try {
        outStream.writeTo(os);
        os.close();
        os = null;
    } finally {
        IOUtil.close(os);
    }
}

Example 4 with DeferredFileOutputStream

use of org.apache.commons.io.output.DeferredFileOutputStream in project maven-plugins by apache.

the class ProcessRemoteResourcesMojo method copyResourceIfExists.

protected boolean copyResourceIfExists(File file, String relFileName, VelocityContext context) throws IOException, MojoExecutionException {
    for (Resource resource : resources) {
        File resourceDirectory = new File(resource.getDirectory());
        if (!resourceDirectory.exists()) {
            continue;
        }
        // TODO - really should use the resource includes/excludes and name mapping
        File source = new File(resourceDirectory, relFileName);
        File templateSource = new File(resourceDirectory, relFileName + TEMPLATE_SUFFIX);
        if (!source.exists() && templateSource.exists()) {
            source = templateSource;
        }
        if (source.exists() && !source.equals(file)) {
            if (source == templateSource) {
                Reader reader = null;
                Writer writer = null;
                DeferredFileOutputStream os = new DeferredFileOutputStream(velocityFilterInMemoryThreshold, file);
                try {
                    if (encoding != null) {
                        reader = new InputStreamReader(new FileInputStream(source), encoding);
                        writer = new OutputStreamWriter(os, encoding);
                    } else {
                        reader = ReaderFactory.newPlatformReader(source);
                        writer = WriterFactory.newPlatformWriter(os);
                    }
                    velocity.evaluate(context, writer, "", reader);
                    writer.close();
                    writer = null;
                    reader.close();
                    reader = null;
                } catch (ParseErrorException e) {
                    throw new MojoExecutionException("Error rendering velocity resource: " + source, e);
                } catch (MethodInvocationException e) {
                    throw new MojoExecutionException("Error rendering velocity resource: " + source, e);
                } catch (ResourceNotFoundException e) {
                    throw new MojoExecutionException("Error rendering velocity resource: " + source, e);
                } finally {
                    IOUtil.close(writer);
                    IOUtil.close(reader);
                }
                fileWriteIfDiffers(os);
            } else if (resource.isFiltering()) {
                MavenFileFilterRequest req = setupRequest(resource, source, file);
                try {
                    fileFilter.copyFile(req);
                } catch (MavenFilteringException e) {
                    throw new MojoExecutionException("Error filtering resource: " + source, e);
                }
            } else {
                FileUtils.copyFile(source, file);
            }
            // exclude the original (so eclipse doesn't complain about duplicate resources)
            resource.addExclude(relFileName);
            return true;
        }
    }
    return false;
}