projectjacsonstate.java

java编写的OCR软件

package de.spieleck.app.jacson.ant;

import java.util.List;
import java.util.Iterator;
import java.util.Set;

import org.apache.tools.ant.Project;

import de.spieleck.app.jacson.JacsonState;

/**
 * Wrap the ant Project to an JacsonState, 
 * so that the JacsonTask can read/write Ant properties.
 *
 * @author fsn
 */
public class ProjectJacsonState
    extends JacsonState
{
    protected Project proj;

    /**
     * Create a ProjectJacsonState to wrap a Project.
     */
    public ProjectJacsonState(Project proj)
    {
        super();
        this.proj = proj;
    }

    /**
     * Create a ProjectJacsonState to wrap a Project
     * and overwrite some properties by the Task params.
     */
    public ProjectJacsonState(Project proj, List params)
    {
        this(proj);
        Iterator it = params.iterator();
        while ( it.hasNext() )
        {
            JacsonTaskParam p = (JacsonTaskParam) it.next();
            put(p.getName(), p.getExpression());
        }
    }

    public Object getContextual(String key)
    {
        if ( attributes != null && attributes.containsKey(key) )
        {
            return attributes.get(key);
        }
        else if ( getParent() != null )
        {
            return getParent().get(key);
        }
        return getGlobal(key);
    }

    public Object getGlobal(String key)
    {
        return proj.getProperty(key);
    }

    public void putContext(String key, Object value)
    {
        // Well, commented out, avoids changing Ant properties.
        // if ( ( attributes != null && attributes.containsKey(key) ) )
        // {
            putLocal(key, value);
        // }
        // else
            // putGlobal(key, value);
    }

    public Set getLocalKeySet()
    {
        Set set = super.getLocalKeySet();
        // getProperties() returns a Hashtable, which in turn
        // is a Map from JDK1.2 on.
        set.add(proj.getProperties().keySet());
        return set;
    }

    public void putGlobal(String key, Object value)
    {
        proj.setProperty(key, value.toString());
    }

    protected JacsonState getRoot()
    {
        return this;
    }
        
    protected JacsonState getParent()
    {
        return null;
    }
}
//
//    Jacson - Text Filtering with Java.
//    Copyright (C) 2002 Frank S. Nestel (nestefan -at- users.sourceforge.net)
//
//    This library is free software; you can redistribute it and/or
//    modify it under the terms of the GNU Lesser General Public
//    License as published by the Free Software Foundation; either
//    version 2.1 of the License, or (at your option) any later version.
//
//    This library 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
//    Lesser General Public License for more details.
//
//    You should have received a copy of the GNU Lesser General Public
//    License along with this library; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//