net.jcreate.e3.resource.handler.CSSMinResourceHandler.java Source code

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Here is the source code for net.jcreate.e3.resource.handler.CSSMinResourceHandler.java

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/*
 * Copyright 2002-2005 the original author or authors.
 *
 * Licensed 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.
 */

/**
 *  E3??QQ:21523645 
 */
package net.jcreate.e3.resource.handler;

import java.io.ByteArrayInputStream;
import java.io.InputStreamReader;
import java.io.StringWriter;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import net.jcreate.e3.resource.HandleResourceException;
import net.jcreate.e3.resource.HttpHolder;
import net.jcreate.e3.resource.Resource;
import net.jcreate.e3.resource.ResourceHandler;

public class CSSMinResourceHandler implements ResourceHandler {

    private final Log logger = LogFactory.getLog(this.getClass());
    private static final int LINEBREAK_AFTER_CHARACTERS = 8000;

    public void handle(Resource pResource) throws HandleResourceException {
        String charset = pResource.getCharset();
        if (charset == null) {
            charset = HttpHolder.getResponse().getCharacterEncoding();
        }
        logger.info("?:" + pResource.getUri() + "css min...");
        try {
            InputStreamReader isr = new InputStreamReader(new ByteArrayInputStream(pResource.getTreatedData()),
                    charset);
            CssCompressor cssc = new CssCompressor(isr);
            StringWriter sw = new StringWriter();
            cssc.compress(sw, LINEBREAK_AFTER_CHARACTERS);
            sw.flush();
            sw.toString();
            sw.close();
            logger.info("css min?:" + pResource.getUri() + "?.");
        } catch (Exception ex) {
            final String MSG = "css min?:" + pResource.getUri() + "?";
            logger.warn(MSG, ex);
            return;

        }

    }

}