com.bstek.dorado.core.io.ResourceUtils.java Source code

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Here is the source code for com.bstek.dorado.core.io.ResourceUtils.java

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/*
 * This file is part of Dorado 7.x (http://dorado7.bsdn.org).
 * 
 * Copyright (c) 2002-2012 BSTEK Corp. All rights reserved.
 * 
 * This file is dual-licensed under the AGPLv3 (http://www.gnu.org/licenses/agpl-3.0.html) 
 * and BSDN commercial (http://www.bsdn.org/licenses) licenses.
 * 
 * If you are unsure which license is appropriate for your use, please contact the sales department
 * at http://www.bstek.com/contact.
 */

package com.bstek.dorado.core.io;

import java.io.IOException;
import java.util.LinkedHashSet;
import java.util.Set;

import org.apache.commons.lang.StringUtils;

import com.bstek.dorado.core.Context;

/**
 * Resource
 * 
 * @author Benny Bao (mailto:benny.bao@bstek.com)
 * @since Feb 19, 2007
 */
public abstract class ResourceUtils {
    private ResourceUtils() {
    }

    /**
     * ???? '/'
     */
    public static String concatPath(String path1, String path2) {
        String result;
        if (StringUtils.isEmpty(path1)) {
            result = path2;
        } else {
            result = path1;
            if (StringUtils.isNotEmpty(path2)) {
                char c1 = path1.charAt(path1.length() - 1), c2 = path2.charAt(0);
                boolean b1 = (c1 == '\\' || c1 == '/'), b2 = (c2 == '\\' || c2 == '/');
                if (!b1 && !b2) {
                    result += '/';
                } else if (b1 && b2) {
                    path2 = path2.substring(1);
                }
                result += path2;
            }
        }
        return result;
    }

    /**
     * ??????
     * 
     * @param resourceLocations
     *            ?
     * @return ????
     * @throws IOException
     */
    public static Set<Resource> getResourceSet(String[] resourceLocations) throws IOException {
        Context context = Context.getCurrent();
        Set<Resource> resourceSet = new LinkedHashSet<Resource>();
        for (String resourceLocation : resourceLocations) {
            Resource[] resourceArray = context.getResources(resourceLocation);
            for (Resource resource : resourceArray) {
                if (!resourceSet.contains(resource)) {
                    resourceSet.add(resource);
                }
            }
        }
        return resourceSet;
    }

    /**
     * ??????
     * 
     * @param resourceLocation
     *            ?
     * @return ????
     * @throws IOException
     */
    public static Set<Resource> getResourceSet(String resourceLocation) throws IOException {
        return getResourceSet(new String[] { resourceLocation });
    }

    /**
     * ??????
     * 
     * @param resourceLocation
     *            ?
     * @return ???
     * @throws IOException
     */
    public static Resource[] getResources(String resourceLocation) throws IOException {
        return getResources(new String[] { resourceLocation });
    }

    /**
     * ??????
     * 
     * @param resourceLocations
     *            ?
     * @return ???
     * @throws IOException
     */
    public static Resource[] getResources(String[] resourceLocations) throws IOException {
        Set<Resource> resourceSet = getResourceSet(resourceLocations);
        Resource[] resources = new Resource[resourceSet.size()];
        resourceSet.toArray(resources);
        return resources;
    }

    /**
     * ??????
     * 
     * @param resourceLocation
     *            ?
     * @return ???
     * @throws IOException
     */
    public static Resource getResource(String resourceLocation) throws IOException {
        Resource resource = null;
        Resource[] resources = getResources(resourceLocation);
        if (resources.length > 0) {
            resource = resources[0];
        }
        return resource;
    }
}