obrcommandimpl.java

OSGI这是一个中间件,与UPNP齐名,是用于移植到嵌入式平台之上

/*
 * Oscar Bundle Repository
 * Copyright (c) 2004, Richard S. Hall
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in
 *     the documentation and/or other materials provided with the
 *     distribution.
 *   * Neither the name of the ungoverned.org nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Contact: Richard S. Hall ([e-mail])
 * Contributor(s):
 *
**/
package org.ungoverned.osgi.bundle.bundlerepository;

import java.io.*;
import java.util.StringTokenizer;

import org.osgi.framework.Bundle;
import org.osgi.framework.BundleContext;
import org.osgi.framework.Constants;
import org.osgi.framework.InvalidSyntaxException;
import org.ungoverned.osgi.service.bundlerepository.BundleRecord;
import org.ungoverned.osgi.service.bundlerepository.BundleRepositoryService;
import org.ungoverned.osgi.service.shell.Command;

public class ObrCommandImpl implements Command
{
    private static final String HELP_CMD = "help";
    private static final String URLS_CMD = "urls";
    private static final String LIST_CMD = "list";
    private static final String INFO_CMD = "info";
    private static final String DEPLOY_CMD = "deploy";
    private static final String INSTALL_CMD = "install";
    private static final String START_CMD = "start";
    private static final String UPDATE_CMD = "update";
    private static final String SOURCE_CMD = "source";

    private static final String NODEPS_SWITCH = "-nodeps";
    private static final String CHECK_SWITCH = "-check";
    private static final String EXTRACT_SWITCH = "-x";

    private BundleContext m_context = null;
    private BundleRepositoryService m_brs = null;

    public ObrCommandImpl(BundleContext context, BundleRepositoryService brs)
    {
        m_context = context;
        m_brs = brs;
    }

    public String getName()
    {
        return "obr";
    }

    public String getUsage()
    {
        return "obr help";
    }

    public String getShortDescription()
    {
        return "Oscar bundle repository.";
    }

    public synchronized void execute(String commandLine, PrintStream out, PrintStream err)
    {
        try
        {
            // Parse the commandLine to get the OBR command.
            StringTokenizer st = new StringTokenizer(commandLine);
            // Ignore the invoking command.
            st.nextToken();
            // Try to get the OBR command, default is HELP command.
            String command = HELP_CMD;
            try
            {
                command = st.nextToken();
            }
            catch (Exception ex)
            {
                // Ignore.
            }
            
            // Perform the specified command.
            if ((command == null) || (command.equals(HELP_CMD)))
            {
                help(out, st);
            }
            else
            {
                if (command.equals(URLS_CMD))
                {
                    urls(commandLine, command, out, err);
                }
                else if (command.equals(LIST_CMD))
                {
                    list(commandLine, command, out, err);
                }
                else if (command.equals(INFO_CMD))
                {
                    info(commandLine, command, out, err);
                }
                else if (command.equals(DEPLOY_CMD))
                {
                    deploy(commandLine, command, out, err);
                }
                else if (command.equals(INSTALL_CMD) || command.equals(START_CMD))
                {
                    install(commandLine, command, out, err);
                }
                else if (command.equals(UPDATE_CMD))
                {
                    update(commandLine, command, out, err);
                }
                else if (command.equals(SOURCE_CMD))
                {
                    source(commandLine, command, out, err);
                }
                else
                {
                    err.println("Unknown command: " + command);
                }
            }
        }
        catch (InvalidSyntaxException ex)
        {
            err.println("Syntax error: " + ex.getMessage());
        }
        catch (IOException ex)
        {
            err.println("Error: " + ex);
        }
    }

    private void urls(
        String commandLine, String command, PrintStream out, PrintStream err)
        throws IOException
    {
        // Parse the commandLine.
        StringTokenizer st = new StringTokenizer(commandLine);
        // Ignore the "obr" command.
        st.nextToken();
        // Ignore the "urls" command.
        st.nextToken();

        int count = st.countTokens();
        String[] urls = new String[count];
        for (int i = 0; i < count; i++)
        {
            urls[i] = st.nextToken();
        }
    
        if (count > 0)
        {
            m_brs.setRepositoryURLs(urls);
        }
        else
        {
            urls = m_brs.getRepositoryURLs();
            if (urls != null)
            {
                for (int i = 0; i < urls.length; i++)
                {
                    out.println(urls[i]);
                }
            }
            else
            {
                out.println("No repository URLs are set.");
            }
        }
    }

    private void list(
        String commandLine, String command, PrintStream out, PrintStream err)
        throws IOException
    {
        // Create a stream tokenizer for the command line string,
        // since the syntax for install/start is more sophisticated.
        StringReader sr = new StringReader(commandLine);
        StreamTokenizer tokenizer = new StreamTokenizer(sr);
        tokenizer.resetSyntax();
        tokenizer.quoteChar('\'');
        tokenizer.quoteChar('\"');
        tokenizer.whitespaceChars('\u0000', '\u0020');
        tokenizer.wordChars('A', 'Z');
        tokenizer.wordChars('a', 'z');
        tokenizer.wordChars('0', '9');
        tokenizer.wordChars('\u00A0', '\u00FF');
        tokenizer.wordChars('.', '.');
        tokenizer.wordChars('-', '-');
        tokenizer.wordChars('_', '_');

                    
        // Ignore the invoking command name and the OBR command.
        int type = tokenizer.nextToken();
        type = tokenizer.nextToken();

        String substr = null;
    
        for (type = tokenizer.nextToken();
            type != StreamTokenizer.TT_EOF;
            type = tokenizer.nextToken())
        {
            // Add a space in between tokens.
            if (substr == null)
            {
                substr = "";
            }
            else
            {
                substr += " ";
            }
                        
            if ((type == StreamTokenizer.TT_WORD) ||
                (type == '\'') || (type == '"'))
            {
                substr += tokenizer.sval.toLowerCase();
            }
        }

        boolean printed = false;
        for (int i = 0; i < m_brs.getBundleRecordCount(); i++)
        {
            BundleRecord record = m_brs.getBundleRecord(i);
            String name = (String) record.getAttribute(BundleRecord.BUNDLE_NAME);
            if (name != null)
            {
                if ((substr == null) ||
                    (name.toLowerCase().indexOf(substr) >= 0))
                {
                    if (!printed)
                    {
                        printed = true;
                        out.println("");
                    }
                    String version =
                        (String) record.getAttribute(BundleRecord.BUNDLE_VERSION);
                    if (version != null)
                    {
                        out.println(name + " (" + version + ")");
                    }
                    else
                    {
                        out.println(name);
                    }
                }
            }
        }
    
        if (printed)
        {
            out.println("");
        }
        else
        {
            out.println("No matching bundles.");
        }
    }

    private void info(
        String commandLine, String command, PrintStream out, PrintStream err)
        throws IOException, InvalidSyntaxException
    {
        ParsedCommand pc = parseInfo(commandLine);
        for (int i = 0; (pc != null) && (i < pc.getTargetCount()); i++)                
        {
            out.println("");

            BundleRecord record = null;

            // If there is no version, then try to retrieve by
            // name, but error if there are multiple versions.
            if (pc.getTargetVersion(i) == null)
            {
                BundleRecord[] records =
                    m_brs.getBundleRecords(pc.getTargetName(i));

                if (records.length == 1)
                {
                    record = records[0];
                }
            }
            else
            {
                record = m_brs.getBundleRecord(
                    pc.getTargetName(i),
                    Util.parseVersionString(
                        pc.getTargetVersion(i)));
            }

            if (record != null)
            {
                record.printAttributes(out);
            }
            else
            {
                err.println("Unknown bundle or amiguous version: "
                    + pc.getTargetName(i));
            }
        }
        out.println("");
    }

    private void deploy(
        String commandLine, String command, PrintStream out, PrintStream err)
        throws IOException, InvalidSyntaxException
    {
        ParsedCommand pc = parseInstallStart(commandLine);
        for (int i = 0; (pc != null) && (i < pc.getTargetCount()); i++)                
        {
            // Find either the local bundle or the bundle
            // record so we can get the update location attribute.
            String updateLocation = null;

            // First look for update location locally.            
            Bundle bundle =
                findLocalBundle(pc.getTargetName(i), pc.getTargetVersion(i));
            if (bundle != null)
            {
                updateLocation = (String)
                    bundle.getHeaders().get(Constants.BUNDLE_UPDATELOCATION);
            }

            // If update location wasn't found locally, look in repository.            
            if (updateLocation == null)