/*
* Created on 24-DEC-2008
* Copyright (C) 2008 by Andrea Vacondio.
*
*
* This library is provided under dual licenses.
* You may choose the terms of the Lesser General Public License version 2.1 or the General Public License version 2
* License at your discretion.
*
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library 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 for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software Foundation;
* either version 2 of the License.
*
* This program 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 General Public License for more details.
* You should have received a copy of the GNU General Public License along with this program;
* if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.pdfsam.console.utils;
import java.io.InputStream;
import java.util.List;
import org.dom4j.io.SAXReader;
/**
* Utility class for pdf documents
*
* @author Andrea Vacondio
*
*/
public final class PdfUtility {
private PdfUtility() {
// no contructor
}
/**
* @param bookmarks
* the stream to read the xml. Stream is not closed.
* @return the max depth of the bookmarks tree. 0 if no bookmark.
*/
public static int getMaxBookmarksDepth(InputStream bookmarks) throws Exception {
int retVal = 0;
if (bookmarks != null) {
SAXReader reader = new SAXReader();
org.dom4j.Document document = reader.read(bookmarks);
StringBuffer buffer = new StringBuffer("/Bookmark/Title[@Action=\"GoTo\"]");
List nodes = document.selectNodes(buffer.toString());
while ((nodes != null && nodes.size() > 0)) {
retVal++;
buffer.append("/Title[@Action=\"GoTo\"]");
nodes = document.selectNodes(buffer.toString());
}
}
return retVal;
}
}