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Apache POI - Java API To Access Microsoft Format Files
/*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ====================================================================
*/
package org.apache.poi.hssf.dev;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
import org.apache.poi.ddf.EscherRecord;
import org.apache.poi.hssf.model.InternalWorkbook;
import org.apache.poi.hssf.record.DrawingGroupRecord;
import org.apache.poi.hssf.usermodel.HSSFPatriarch;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.util.StringUtil;
/**
* Utility for representing drawings contained in a binary Excel file as a XML tree
*/
public class BiffDrawingToXml {
private static final String SHEET_NAME_PARAM = "-sheet-name";
private static final String SHEET_INDEXES_PARAM = "-sheet-indexes";
private static final String EXCLUDE_WORKBOOK_RECORDS = "-exclude-workbook";
private static int getAttributeIndex(String attribute, String[] params) {
for (int i = 0; i < params.length; i++) {
String param = params[i];
if (attribute.equals(param)) {
return i;
}
}
return -1;
}
private static boolean isExcludeWorkbookRecords(String[] params) {
return -1 != getAttributeIndex(EXCLUDE_WORKBOOK_RECORDS, params);
}
private static List getIndexesByName(String[] params, HSSFWorkbook workbook) {
List list = new ArrayList<>();
int pos = getAttributeIndex(SHEET_NAME_PARAM, params);
if (-1 != pos) {
if (pos >= params.length) {
throw new IllegalArgumentException("sheet name param value was not specified");
}
String sheetName = params[pos + 1];
int sheetPos = workbook.getSheetIndex(sheetName);
if (-1 == sheetPos){
throw new IllegalArgumentException("specified sheet name has not been found in xls file");
}
list.add(sheetPos);
}
return list;
}
private static List getIndexesByIdArray(String[] params) {
List list = new ArrayList<>();
int pos = getAttributeIndex(SHEET_INDEXES_PARAM, params);
if (-1 != pos) {
if (pos >= params.length) {
throw new IllegalArgumentException("sheet list value was not specified");
}
String sheetParam = params[pos + 1];
String[] sheets = sheetParam.split(",");
for (String sheet : sheets) {
list.add(Integer.parseInt(sheet));
}
}
return list;
}
private static List getSheetsIndexes(String[] params, HSSFWorkbook workbook) {
List list = new ArrayList<>();
list.addAll(getIndexesByIdArray(params));
list.addAll(getIndexesByName(params, workbook));
if (0 == list.size()) {
int size = workbook.getNumberOfSheets();
for (int i = 0; i < size; i++) {
list.add(i);
}
}
return list;
}
private static String getInputFileName(String[] params) {
return params[params.length - 1];
}
private static String getOutputFileName(String input) {
if (input.contains("xls")) {
return input.replace(".xls", ".xml");
}
return input + ".xml";
}
public static void main(String[] params) throws IOException {
if (0 == params.length) {
System.out.println("Usage: BiffDrawingToXml [options] inputWorkbook");
System.out.println("Options:");
System.out.println(" -exclude-workbook exclude workbook-level records");
System.out.println(" -sheet-indexes output sheets with specified indexes");
System.out.println(" -sheet-namek output sheets with specified name");
return;
}
String input = getInputFileName(params);
FileInputStream inp = new FileInputStream(input);
String output = getOutputFileName(input);
FileOutputStream outputStream = new FileOutputStream(output);
writeToFile(outputStream, inp, isExcludeWorkbookRecords(params), params);
inp.close();
outputStream.close();
}
public static void writeToFile(OutputStream fos, InputStream xlsWorkbook, boolean excludeWorkbookRecords, String[] params) throws IOException {
HSSFWorkbook workbook = new HSSFWorkbook(xlsWorkbook);
InternalWorkbook internalWorkbook = workbook.getInternalWorkbook();
DrawingGroupRecord r = (DrawingGroupRecord) internalWorkbook.findFirstRecordBySid(DrawingGroupRecord.sid);
StringBuilder builder = new StringBuilder();
builder.append("\n");
String tab = "\t";
if (!excludeWorkbookRecords && r != null) {
r.decode();
List escherRecords = r.getEscherRecords();
for (EscherRecord record : escherRecords) {
builder.append(record.toXml(tab));
}
}
List sheets = getSheetsIndexes(params, workbook);
for (Integer i : sheets) {
HSSFPatriarch p = workbook.getSheetAt(i).getDrawingPatriarch();
if(p != null ) {
builder.append(tab).append("\n");
builder.append(p.getBoundAggregate().toXml(tab + "\t"));
builder.append(tab).append(" \n");
}
}
builder.append(" \n");
fos.write(builder.toString().getBytes(StringUtil.UTF8));
fos.close();
workbook.close();
}
}