org.apache.poi.xssf.dev.XSSFDump Maven / Gradle / Ivy
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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
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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,
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See the License for the specific language governing permissions and
limitations under the License.
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package org.apache.poi.xssf.dev;
import org.apache.xmlbeans.XmlObject;
import org.apache.xmlbeans.XmlOptions;
import java.io.*;
import java.util.zip.ZipFile;
import java.util.zip.ZipEntry;
import java.util.Enumeration;
/**
* Utility class which dumps the contents of a *.xlsx file into file system.
*
* @author Yegor Kozlov
*/
public final class XSSFDump {
public static void main(String[] args) throws Exception {
for (int i = 0; i < args.length; i++) {
System.out.println("Dumping " + args[i]);
ZipFile zip = new ZipFile(args[i]);
dump(zip);
}
}
public static void dump(ZipFile zip) throws Exception {
String zipname = zip.getName();
int sep = zipname.lastIndexOf('.');
File root = new File(zipname.substring(0, sep));
root.mkdir();
Enumeration en = zip.entries();
while(en.hasMoreElements()){
ZipEntry entry = (ZipEntry)en.nextElement();
String name = entry.getName();
int idx = name.lastIndexOf('/');
if(idx != -1){
File bs = new File(root, name.substring(0, idx));
bs.mkdirs();
}
File f = new File(root, entry.getName());
FileOutputStream out = new FileOutputStream(f);
if(entry.getName().endsWith(".xml") || entry.getName().endsWith(".vml") || entry.getName().endsWith(".rels")){
try {
XmlObject xml = XmlObject.Factory.parse(zip.getInputStream(entry));
XmlOptions options = new XmlOptions();
options.setSavePrettyPrint();
xml.save(out, options);
} catch (Exception e){
System.err.println("Failed to parse " + entry.getName() + ", dumping raw content");
dump(zip.getInputStream(entry), out);
}
} else {
dump(zip.getInputStream(entry), out);
}
out.close();
}
}
protected static void dump(InputStream is, OutputStream out) throws IOException{
int pos;
byte[] chunk = new byte[2048];
while((pos = is.read(chunk)) > 0) out.write(chunk, 0, pos);
}
}