org.bridje.web.impl.RenderFileBridlet Maven / Gradle / Ivy

Go to download
/*
 * Copyright 2016 Bridje Framework.
 *
 * 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.
 */

package org.bridje.web.impl;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.bridje.http.HttpBridlet;
import org.bridje.http.HttpBridletContext;
import org.bridje.http.HttpBridletRequest;
import org.bridje.http.HttpBridletResponse;
import org.bridje.http.HttpException;
import org.bridje.ioc.Component;
import org.bridje.ioc.InjectNext;
import org.bridje.ioc.Priority;
import org.bridje.vfs.Path;
import org.bridje.vfs.VFile;
import org.bridje.vfs.VFileInputStream;
import org.bridje.web.WebScope;

@Component
@Priority(700)
class RenderFileBridlet implements HttpBridlet
{
    @InjectNext
    private HttpBridlet nextHandler;

    private final Path PUBLIC_PATH = new Path("/web/public");

    @Override
    public boolean handle(HttpBridletContext context) throws IOException, HttpException
    {
        VFile file = context.get(VFile.class);
        if(file == null)
        {
            String pathStr = context.get(WebScope.class).getPath();
            if(pathStr != null && 
                    !(pathStr.endsWith(".view.xml") || pathStr.endsWith(".layout.xml")))
            {
                Path path = new Path(pathStr).getCanonicalPath();
                if(path != null)
                {
                    path = PUBLIC_PATH.join(path);
                    file = new VFile(path);
                }
            }
        }
        if(file != null)
        {
            if(file.exists() && file.isFile())
            {
                HttpBridletResponse resp = context.getResponse();
                try(InputStream is = new VFileInputStream(file))
                {
                    try(OutputStream os = resp.getOutputStream())
                    {
                        resp.setContentType(file.getMimeType());
                        copy(is, os);
                        os.flush();
                    }
                }
                return true;
            }
        }
        if(nextHandler != null)
        {
            return nextHandler.handle(context);
        }
        return false;
    }

    private void copy(InputStream is, OutputStream os) throws IOException
    {
        byte[] buffer = new byte[1024];
        int bytesCount = is.read(buffer);
        while(bytesCount > -1)
        {
            os.write(buffer, 0, bytesCount);
            bytesCount = is.read(buffer);
        }
    }
}