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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
package org.openoffice.xmerge.converter.xml.sxc.pexcel.records;
import java.io.OutputStream;
import java.io.InputStream;
import java.io.IOException;
import org.openoffice.xmerge.util.Debug;
import org.openoffice.xmerge.util.EndianConverter;
import org.openoffice.xmerge.converter.xml.OfficeConstants;
import org.openoffice.xmerge.converter.xml.sxc.Format;
import org.openoffice.xmerge.converter.xml.sxc.pexcel.records.formula.FormulaHelper;
import org.openoffice.xmerge.converter.xml.sxc.pexcel.records.Workbook;
import org.openoffice.xmerge.converter.xml.sxc.pexcel.PocketExcelConstants;
/**
* Represents a BIFF Record describing a formula
*/
public class Formula extends CellValue implements OfficeConstants {
private byte[] num = new byte[8];
private byte grbit;
private byte[] cce = new byte[2];
private byte[] rgce;
private FormulaHelper fh = new FormulaHelper();
/**
* Constructs a <code>Formula</code> using specified attributes
*
* @param row row number
* @param col column number
* @param cellContents contents of the cell
* @param ixfe font index
* @param value the value of the cell
*/
public Formula(int row, int column, String cellContents, int ixfe, Format fmt, Workbook wb)
throws Exception {
fh.setWorkbook(wb);
setRow(row);
setCol(column);
setIxfe(ixfe);
setFormula(cellContents);
String category = fmt.getCategory();
String value = fmt.getValue();
if(category.equalsIgnoreCase(CELLTYPE_BOOLEAN)) {
num[0]=(byte)0x01;
num[1]=(byte)0x00;
if(value.equalsIgnoreCase("true")) {
num[2]=(byte)0x01;
} else {
num[2]=(byte)0x00;
}
num[3]=(byte)0x00;num[4]=(byte)0x00;num[5]=(byte)0x00;
num[6]=(byte)0xFF;num[7]=(byte)0xFF;
} else if(category.equalsIgnoreCase(CELLTYPE_DATE)) {
Debug.log(Debug.TRACE,"Date Formula");
num = EndianConverter.writeDouble(toExcelSerialDate(fmt.getValue()));
} else if(category.equalsIgnoreCase(CELLTYPE_TIME)) {
Debug.log(Debug.TRACE,"Time Formula");
num = EndianConverter.writeDouble(toExcelSerialTime(fmt.getValue()));
} else if(category.equalsIgnoreCase(CELLTYPE_PERCENT)) {
Debug.log(Debug.TRACE,"Percent Formula");
double percent = (double) Double.parseDouble(fmt.getValue());
num = EndianConverter.writeDouble(percent);
} else if(category.equalsIgnoreCase(CELLTYPE_CURRENCY)) {
Debug.log(Debug.TRACE,"Currency Formula");
} else if(category.equalsIgnoreCase(CELLTYPE_STRING)) {
Debug.log(Debug.TRACE,"String Formula");
num[0]=(byte)0x00;
num[1]=(byte)0x00;
num[2]=(byte)0x00;
num[3]=(byte)0x00;
num[4]=(byte)0x00;
num[5]=(byte)0x00;
num[6]=(byte)0xFF;
num[7]=(byte)0xFF;
} else {
Debug.log(Debug.TRACE,"Float Formula");
double cellLong = (double) Double.parseDouble(fmt.getValue());
num = EndianConverter.writeDouble(cellLong);
}
}
/**
* Translates a <code>String</code> written in infix which represents a
* formula into a byte[] what can be written to pocket excel file.
*
* @param formula string
*/
public void setFormula(String inFormula) throws Exception {
rgce = fh.convertCalcToPXL(inFormula);
cce = EndianConverter.writeShort((short) rgce.length);
}
/**
* Constructs a pocket Excel formula from the
* <code>InputStream</code>
*
* @param is InputStream containing a Pocket Excel Data file.
*/
public Formula(InputStream is, Workbook wb) throws IOException {
read(is);
fh.setWorkbook(wb);
}
/**
* Get the hex code for this particular <code>BIFFRecord</code>
*
* @return the hex code for <code>Formula</code>
*/
public short getBiffType() {
return PocketExcelConstants.FORMULA_CELL;
}
/**
* Reads the formula data members from the stream. Byte arrays for Strings
* are doubled as they are stored as unicode
*
* @return total number of bytes read
*/
public int read(InputStream input) throws IOException {
int numOfBytesRead = super.read(input);
numOfBytesRead += input.read(num);
grbit = (byte) input.read();
numOfBytesRead ++;
numOfBytesRead += input.read(cce);
int strLen = EndianConverter.readShort(cce);
rgce = new byte[strLen];
input.read(rgce, 0, strLen);
Debug.log(Debug.TRACE, " num : " + num +
"\n\tgrbit : " + grbit +
" cce : " + EndianConverter.readShort(cce) +
" rgce : " + new String(rgce,"UTF-16LE") +
"\n" + numOfBytesRead + " Bytes Read");
return numOfBytesRead;
}
/**
* Writes the Formula record to the <code>OutputStream</code>
*
* @param the <code>OutputStream</code> being written to
*/
public void write(OutputStream output) throws IOException {
output.write(getBiffType());
super.write(output);
output.write(num);
output.write(grbit);
output.write(cce);
output.write(rgce);
Debug.log(Debug.TRACE,"Writing Formula record");
}
/**
* Gets the <code>String</code> representing the cell value
*
* @return the <code>String</code> representing the cell value
*/
public String getValue() throws IOException {
double value = EndianConverter.readDouble(num);
Double myDo = new Double(value);
return myDo.toString();
}
/**
* Gets the <code>String</code> representing the cells contents
*
* @return the <code>String</code> representing the cells contents
*/
public String getString() throws IOException {
return fh.convertPXLToCalc(rgce);
}
/**
* Excel dates are the number of days since 1/1/1900. This method converts
* to this date.
*
* @param s String representing a date in the form YYYY-MM-DD
* @return The excel serial date
*/
public long toExcelSerialDate(String s) throws IOException {
int year = Integer.parseInt(s.substring(0,4));
int month = Integer.parseInt(s.substring(5,7));
int day = Integer.parseInt(s.substring(8,10));
long serialDate = (1461 * (year + 4800 + (month - 14) / 12)) / 4 +
(367 * (month - 2 - 12 * ((month - 14) / 12))) / 12 -
(3 * ((year + 4900 + (month - 14) / 12)) / 100) / 4 +
day - 2415019 - 32075;
return serialDate;
}
/**
* Excel times are a fraction of a 24 hour day expressed in seconds. This method converts
* to this time.
*
* @param s String representing a time in the form ??HH?MM?SS?
* @return The excel serial time
*/
public double toExcelSerialTime(String s) throws IOException {
int hours = Integer.parseInt(s.substring(2,4));
int mins = Integer.parseInt(s.substring(5,7));
int secs = Integer.parseInt(s.substring(8,10));
int timeSecs = (hours*3600) + (mins*60) + (secs);
double d = (double) timeSecs / (24 * 3600);
return d;
}
}
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