org.apache.maven.doxia.siterenderer.SkinResourceLoader.java Source code

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Here is the source code for org.apache.maven.doxia.siterenderer.SkinResourceLoader.java

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package org.apache.maven.doxia.siterenderer;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;

import org.apache.velocity.runtime.resource.Resource;
import org.apache.velocity.runtime.resource.loader.ResourceLoader;
import org.apache.velocity.exception.ResourceNotFoundException;
import org.apache.commons.collections.ExtendedProperties;
import org.codehaus.plexus.util.IOUtil;

/**
 * Skin resource loader: gets content from context classloader, which should contain skin artifact,
 * and normalizes newlines
 * (see <a href="https://issues.apache.org/jira/browse/DOXIASITETOOLS-87">DOXIASITETOOLS-87</a>).
 *
 * @author Herv Boutemy
 */
@Deprecated
public class SkinResourceLoader extends ResourceLoader {
    public void init(ExtendedProperties configuration) {
    }

    public synchronized InputStream getResourceStream(String name) throws ResourceNotFoundException {
        ClassLoader classLoader = Thread.currentThread().getContextClassLoader();

        if (name.startsWith("/")) {
            name = name.substring(1);
        }

        return normalizeNewline(classLoader.getResourceAsStream(name));
    }

    InputStream normalizeNewline(InputStream in) throws ResourceNotFoundException {
        if (in == null) {
            return null;
        }

        try {
            byte[] content = IOUtil.toByteArray(in);

            // following code based on org.apache.maven.doxia.sink.AbstractSink.unifyEOLs(String)

            byte[] eol = System.getProperty("line.separator").getBytes();

            final int size = content.length;

            ByteArrayOutputStream out = new ByteArrayOutputStream(size);

            for (int i = 0; i < size; i++) {
                byte b = content[i];

                if (b == '\r') {
                    if ((i + 1) < size && content[i + 1] == '\n') {
                        i++;
                    }

                    out.write(eol);
                } else if (b == '\n') {
                    out.write(eol);
                } else {
                    out.write(b);
                }
            }

            return new ByteArrayInputStream(out.toByteArray());
        } catch (IOException ioe) {
            throw new ResourceNotFoundException("cannot read resource", ioe);
        } finally {
            IOUtil.close(in);
        }
    }

    public boolean isSourceModified(Resource resource) {
        return false;
    }

    public long getLastModified(Resource resource) {
        return 0;
    }
}