areareference.java

Office格式转换代码

/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2003 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. 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.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Apache" and "Apache Software Foundation" and
 *    "Apache POI" must not be used to endorse or promote products
 *    derived from this software without prior written permission. For
 *    written permission, please contact [e-mail].
 *
 * 5. Products derived from this software may not be called "Apache",
 *    "Apache POI", nor may "Apache" appear in their name, without
 *    prior written permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

package org.apache.poi.hssf.util;

public class AreaReference {


private CellReference [] cells;
private int dim;

    /** Create an area ref from a string representation
     */
    public AreaReference(String reference) {
        String[] refs = seperateAreaRefs(reference);
        dim = refs.length;
        cells = new CellReference[dim];
        for (int i=0;i<dim;i++) {
            cells[i]=new CellReference(refs[i]);
        }
    }
    //not sure if we need to be flexible here!
    /** return the dimensions of this area
     **/
    public int getDim() {
        return dim;
    }
    /** return the cell references that define this area */
    public CellReference[] getCells() {
        return cells;
    }

    public String toString() {
        StringBuffer retval = new StringBuffer();
        for (int i=0;i<dim;i++){
            retval.append(':');
            retval.append(cells[i].toString());
        }
        retval.deleteCharAt(0);
        return retval.toString();
    }

    /**
     * seperates Area refs in two parts and returns them as seperate elements in a
     * String array
     */
    private String[] seperateAreaRefs(String reference) {
        String[] retval = null;

        int length = reference.length();

        int loc = reference.indexOf(':',0);
        if(loc == -1){
           retval = new String[1];
           retval[0] = reference;
        }
        else{
           retval = new String[2];
           int sheetStart = reference.indexOf("!");

           retval[0] = reference.substring(0, sheetStart+1) + reference.substring(sheetStart + 1,loc);
           retval[1] = reference.substring(0, sheetStart+1) + reference.substring(loc+1);
        }
        return retval;
    }
}