com.robonobo.common.io.HttpInputStream.java Source code

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Here is the source code for com.robonobo.common.io.HttpInputStream.java

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package com.robonobo.common.io;
/*
 * Robonobo Common Utils
 * Copyright (C) 2008 Will Morton (macavity@well.com) & Ray Hilton (ray@wirestorm.net)
    
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
    
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
    
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/

import java.io.IOException;
import java.io.InputStream;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpMethod;
import org.apache.commons.httpclient.methods.GetMethod;

public class HttpInputStream extends InputStream {
    InputStream innerStream;
    protected String url;

    public HttpInputStream(String url) throws IOException {
        super();
        this.url = url;

        //innerStream = createInputStream();
    }

    protected InputStream createInputStream() throws IOException {
        HttpClient client = new HttpClient();
        HttpMethod method = createMethod(url);

        int status = client.executeMethod(method);
        switch (status) {
        case 200:
        case 206:
            return method.getResponseBodyAsStream();
        default:
            throw new IOException("Unable to connect to url '" + url + "', status code: " + status);
        }
    }

    protected HttpMethod createMethod(String location) {
        return new GetMethod(location);
    }

    public InputStream getActualStream() throws IOException {
        if (innerStream == null)
            innerStream = createInputStream();

        return innerStream;
    }

    public int read() throws IOException {
        return getActualStream().read();
    }

    public int available() throws IOException {
        return getActualStream().available();
    }

    public synchronized void mark(int readlimit) {
        return;
    }

    public boolean markSupported() {
        return false;
    }

    public int read(byte[] b) throws IOException {
        return getActualStream().read(b);
    }

    public int read(byte[] b, int off, int len) throws IOException {
        return getActualStream().read(b, off, len);
    }

    public long skip(long n) throws IOException {
        return getActualStream().skip(n);
    }

    public void close() throws IOException {
        getActualStream().close();
    }

    public synchronized void reset() throws IOException {
        getActualStream().reset();
    }
}