tokenselect.java

java编写的OCR软件

package de.spieleck.app.jacson.select;

import de.spieleck.config.ConfigNode;
import de.spieleck.config.ConfigVerify.Acceptor;

import de.spieleck.app.jacson.JacsonSelect;
import de.spieleck.app.jacson.JacsonRegistry;
import de.spieleck.app.jacson.SelectionResult;
import de.spieleck.app.jacson.JacsonConfigException;
import de.spieleck.app.jacson.util.ConfigUtil;

/**
 * Select ranges delimited by two delimiters. Delimiters can 
 * be chosen. They default "@" on boths ends, which resembles
 * what the Ant people call a token.
 * @author fsn
 */
public class TokenSelect
    implements JacsonSelect, Acceptor
{
    public final static String LEFT_NODE = "leftdelim";
    public final static String RIGHT_NODE = "rightdelim";
    public final static String DEFAULT_DELIMITER = "@";

    protected String leftDelim, rightDelim;

    protected String curChunk;
    protected int lastMatch;

    protected SimpleResult result = new SimpleResult();

    public void init(ConfigNode config, JacsonRegistry registry)
        throws JacsonConfigException
    {
        leftDelim = config.getString(LEFT_NODE, DEFAULT_DELIMITER);
        rightDelim= config.getString(RIGHT_NODE, DEFAULT_DELIMITER); 
        ConfigUtil.verify(config, this);
    }

    public boolean accept(ConfigNode cn)
    {
        if ( !cn.getName().equals(LEFT_NODE)
            && !cn.getName().equals(RIGHT_NODE) )
            return false;
        return true;
    }

    public void setChunk(String chunk)
    {
        curChunk = chunk;
        lastMatch = 0;
    }

    public SelectionResult getNextSelection()
    {
        if ( curChunk == null )
            return null;
        int i = curChunk.indexOf(leftDelim, lastMatch);
        if ( i == -1 )
            return null;
        int i1 = i + leftDelim.length();
        int j = curChunk.indexOf(rightDelim, i1);
        if ( j == -1 )
            return null;
        lastMatch = j + rightDelim.length();
        String res = curChunk.substring(i1, j);
        result.set(i,lastMatch,res);
        return result;
    }
}
//
//    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
//