509 lines
14 KiB
Java
509 lines
14 KiB
Java
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/* ====================================================================
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* The Apache Software License, Version 1.1
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*
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* Copyright (c) 2002 The Apache Software Foundation. All rights
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* reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The end-user documentation included with the redistribution,
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* if any, must include the following acknowledgment:
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* "This product includes software developed by the
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* Apache Software Foundation (http://www.apache.org/)."
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* Alternately, this acknowledgment may appear in the software itself,
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* if and wherever such third-party acknowledgments normally appear.
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*
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* 4. The names "Apache" and "Apache Software Foundation" and
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* "Apache POI" must not be used to endorse or promote products
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* derived from this software without prior written permission. For
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* written permission, please contact apache@apache.org.
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*
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* 5. Products derived from this software may not be called "Apache",
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* "Apache POI", nor may "Apache" appear in their name, without
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* prior written permission of the Apache Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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* ====================================================================
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*
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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*/
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/*
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* FormulaRecord.java
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*
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* Created on October 28, 2001, 5:44 PM
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*/
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package org.apache.poi.hssf.record;
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import java.util.Stack;
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import java.util.List;
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import org.apache.poi.util.LittleEndian;
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import org.apache.poi.hssf.record.formula.*;
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/**
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* Formula Record - This is not really supported in this release. Its here for future use.<P>
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* REFERENCE: PG 317/444 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
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* @author Andrew C. Oliver (acoliver at apache dot org)
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* @version 2.0-pre
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*/
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public class FormulaRecord
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extends Record
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implements CellValueRecordInterface, Comparable
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{
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public static final boolean EXPERIMENTAL_FORMULA_SUPPORT_ENABLED=false;
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public static final short sid =
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0x06; // docs say 406...because of a bug Microsoft support site article #Q184647)
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private short field_1_row;
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private short field_2_column;
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private short field_3_xf;
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private double field_4_value;
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private short field_5_options;
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private int field_6_zero;
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private short field_7_expression_len;
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private Stack field_8_parsed_expr;
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private byte[] all_data; //if formula support is not enabled then
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//we'll just store/reserialize
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/** Creates new FormulaRecord */
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public FormulaRecord()
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{
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field_8_parsed_expr = new Stack();
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}
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/**
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* Constructs a Formula record and sets its fields appropriately.
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*
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* @param id id must be 0x06 (NOT 0x406 see MSKB #Q184647 for an "explanation of
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* this bug in the documentation) or an exception will be throw upon validation
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* @param size the size of the data area of the record
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* @param data data of the record (should not contain sid/len)
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*/
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public FormulaRecord(short id, short size, byte [] data)
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{
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super(id, size, data);
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}
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/**
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* Constructs a Formula record and sets its fields appropriately.
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*
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* @param id id must be 0x06 (NOT 0x406 see MSKB #Q184647 for an "explanation of
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* this bug in the documentation) or an exception will be throw upon validation
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* @param size the size of the data area of the record
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* @param data data of the record (should not contain sid/len)
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* @param offset of the record's data
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*/
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public FormulaRecord(short id, short size, byte [] data, int offset)
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{
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super(id, size, data, offset);
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}
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protected void fillFields(byte [] data, short size, int offset)
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{
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if (EXPERIMENTAL_FORMULA_SUPPORT_ENABLED) {
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field_1_row = LittleEndian.getShort(data, 0 + offset);
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field_2_column = LittleEndian.getShort(data, 2 + offset);
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field_3_xf = LittleEndian.getShort(data, 4 + offset);
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field_4_value = LittleEndian.getDouble(data, 6 + offset);
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field_5_options = LittleEndian.getShort(data, 14 + offset);
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field_6_zero = LittleEndian.getInt(data, 16 + offset);
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field_7_expression_len = LittleEndian.getShort(data, 20 + offset);
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field_8_parsed_expr = getParsedExpressionTokens(data, size,
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offset);
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} else {
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all_data = new byte[size+4];
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LittleEndian.putShort(all_data,0,sid);
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LittleEndian.putShort(all_data,2,size);
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System.arraycopy(data,offset,all_data,4,size);
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}
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}
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private Stack getParsedExpressionTokens(byte [] data, short size,
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int offset)
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{
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Stack stack = new Stack();
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/*int pos = 22 + offset;
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while (pos < size)
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{
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Ptg ptg = Ptg.createPtg(data, pos);
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pos += ptg.getSize();
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stack.push(ptg);
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}*/
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return stack;
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}
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public void setRow(short row)
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{
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field_1_row = row;
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}
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public void setColumn(short column)
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{
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field_2_column = column;
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}
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public void setXFIndex(short xf)
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{
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field_3_xf = xf;
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}
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/**
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* set the calculated value of the formula
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*
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* @param value calculated value
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*/
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public void setValue(double value)
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{
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field_4_value = value;
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}
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/**
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* set the option flags
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*
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* @param options bitmask
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*/
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public void setOptions(short options)
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{
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field_5_options = options;
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}
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/**
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* set the length (in number of tokens) of the expression
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* @param len length
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*/
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public void setExpressionLength(short len)
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{
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field_7_expression_len = len;
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}
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public short getRow()
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{
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return field_1_row;
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}
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public short getColumn()
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{
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return field_2_column;
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}
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public short getXFIndex()
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{
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return field_3_xf;
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}
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/**
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* get the calculated value of the formula
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*
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* @return calculated value
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*/
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public double getValue()
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{
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return field_4_value;
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}
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/**
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* get the option flags
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*
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* @return bitmask
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*/
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public short getOptions()
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{
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return field_5_options;
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}
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/**
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* get the length (in number of tokens) of the expression
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* @return expression length
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*/
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public short getExpressionLength()
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{
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return field_7_expression_len;
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}
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/**
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* push a token onto the stack
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*
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* @param ptg the token
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*/
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public void pushExpressionToken(Ptg ptg)
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{
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field_8_parsed_expr.push(ptg);
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}
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/**
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* pop a token off of the stack
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*
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* @return Ptg - the token
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*/
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public Ptg popExpressionToken()
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{
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return ( Ptg ) field_8_parsed_expr.pop();
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}
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/**
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* peek at the token on the top of stack
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*
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* @return Ptg - the token
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*/
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public Ptg peekExpressionToken()
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{
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return ( Ptg ) field_8_parsed_expr.peek();
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}
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/**
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* get the size of the stack
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* @return size of the stack
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*/
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public int getNumberOfExpressionTokens()
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{
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return field_8_parsed_expr.size();
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}
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/**
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* get the stack as a list
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*
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* @return list of tokens (casts stack to a list and returns it!)
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*/
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public List getParsedExpression()
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{
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return ( List ) field_8_parsed_expr;
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}
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/**
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* called by constructor, should throw runtime exception in the event of a
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* record passed with a differing ID.
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*
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* @param id alleged id for this record
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*/
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protected void validateSid(short id)
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{
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if (id != sid)
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{
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throw new RecordFormatException("NOT A FORMULA RECORD");
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}
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}
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public short getSid()
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{
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return sid;
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}
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/**
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* called by the class that is responsible for writing this sucker.
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* Subclasses should implement this so that their data is passed back in a
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* byte array.
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*
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* @return byte array containing instance data
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*/
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public int serialize(int offset, byte [] data)
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{
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if (EXPERIMENTAL_FORMULA_SUPPORT_ENABLED) {
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int ptgSize = getTotalPtgSize();
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LittleEndian.putShort(data, 0 + offset, sid);
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LittleEndian.putShort(data, 2 + offset, ( short ) (24 + ptgSize));
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LittleEndian.putShort(data, 4 + offset, getRow());
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LittleEndian.putShort(data, 6 + offset, getColumn());
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LittleEndian.putShort(data, 8 + offset, getXFIndex());
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LittleEndian.putDouble(data, 10 + offset, getValue());
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LittleEndian.putShort(data, 18 + offset, getOptions());
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LittleEndian.putInt(data, 20 + offset, field_6_zero);
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LittleEndian.putShort(data, 24 + offset, getExpressionLength());
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} else {
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System.arraycopy(all_data,0,data,offset,all_data.length);
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}
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// serializePtgs(data, 26+offset);
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return getRecordSize();
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}
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public int getRecordSize()
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{
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int retval =0;
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if (EXPERIMENTAL_FORMULA_SUPPORT_ENABLED) {
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retval = getTotalPtgSize() + 28;
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} else {
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retval =all_data.length;
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}
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return retval;
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// return getTotalPtgSize() + 28;
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}
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private int getTotalPtgSize()
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{
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List list = getParsedExpression();
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int retval = 0;
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for (int k = 0; k < list.size(); k++)
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{
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Ptg ptg = ( Ptg ) list.get(k);
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retval += ptg.getSize();
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}
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return retval;
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}
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private void serializePtgs(byte [] data, int offset)
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{
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int pos = offset;
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for (int k = 0; k < field_8_parsed_expr.size(); k++)
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{
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Ptg ptg = ( Ptg ) field_8_parsed_expr.get(k);
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ptg.writeBytes(data, pos);
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pos += ptg.getSize();
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}
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}
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public boolean isBefore(CellValueRecordInterface i)
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{
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if (this.getRow() > i.getRow())
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{
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return false;
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}
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if ((this.getRow() == i.getRow())
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&& (this.getColumn() > i.getColumn()))
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{
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return false;
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}
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if ((this.getRow() == i.getRow())
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&& (this.getColumn() == i.getColumn()))
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{
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return false;
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}
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return true;
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}
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public boolean isAfter(CellValueRecordInterface i)
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{
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if (this.getRow() < i.getRow())
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{
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return false;
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}
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if ((this.getRow() == i.getRow())
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&& (this.getColumn() < i.getColumn()))
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{
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return false;
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}
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if ((this.getRow() == i.getRow())
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&& (this.getColumn() == i.getColumn()))
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{
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return false;
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}
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return true;
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}
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public boolean isEqual(CellValueRecordInterface i)
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{
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return ((this.getRow() == i.getRow())
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&& (this.getColumn() == i.getColumn()));
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}
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public boolean isInValueSection()
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{
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return true;
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}
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public boolean isValue()
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{
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return true;
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}
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public int compareTo(Object obj)
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{
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CellValueRecordInterface loc = ( CellValueRecordInterface ) obj;
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if ((this.getRow() == loc.getRow())
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&& (this.getColumn() == loc.getColumn()))
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{
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return 0;
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}
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if (this.getRow() < loc.getRow())
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{
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return -1;
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}
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if (this.getRow() > loc.getRow())
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{
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return 1;
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}
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if (this.getColumn() < loc.getColumn())
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{
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return -1;
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}
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if (this.getColumn() > loc.getColumn())
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{
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return 1;
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}
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return -1;
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}
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public boolean equals(Object obj)
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{
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if (!(obj instanceof CellValueRecordInterface))
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{
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return false;
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}
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CellValueRecordInterface loc = ( CellValueRecordInterface ) obj;
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if ((this.getRow() == loc.getRow())
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&& (this.getColumn() == loc.getColumn()))
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{
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return true;
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}
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return false;
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}
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}
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