package study.pdfbox;
/*
* 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.
*/
import java.io.IOException;
import java.io.InputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.List;
import org.apache.pdfbox.exceptions.InvalidPasswordException;
import org.apache.pdfbox.exceptions.COSVisitorException;
import org.apache.pdfbox.pdfparser.PDFParser;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdfwriter.COSWriter;
import org.apache.pdfbox.util.Splitter;
/**
* This is the main program that will take a pdf document and split it into
* a number of other documents.
*
* @author <a href="ben@benlitchfield.com">Ben Litchfield</a>
* @version $Revision: 1.6 $
*/
public class PDFSplit
{
private static final String PASSWORD = "-password";
private static final String SPLIT = "-split";
private PDFSplit()
{
}
/**
* Infamous main method.
*
* @param args Command line arguments, should be one and a reference to a file.
*
* @throws Exception If there is an error parsing the document.
*/
public static void main( String[] args ) throws Exception
{
PDFSplit split = new PDFSplit();
split.split( args );
}
private void split( String[] args ) throws Exception
{
String password = "";
String split = "1";
Splitter splitter = new Splitter();
String pdfFile = null;
for( int i=0; i<args.length; i++ )
{
if( args[i].equals( PASSWORD ) )
{
i++;
if( i >= args.length )
{
usage();
}
password = args[i];
}
else if( args[i].equals( SPLIT ) )
{
i++;
if( i >= args.length )
{
usage();
}
split = args[i];
}
else
{
if( pdfFile == null )
{
pdfFile = args[i];
}
}
}
if( pdfFile == null )
{
usage();
}
else
{
InputStream input = null;
PDDocument document = null;
List documents = null;
try
{
input = new FileInputStream( pdfFile );
document = parseDocument( input );
if( document.isEncrypted() )
{
try
{
document.decrypt( password );
}
catch( InvalidPasswordException e )
{
if( args.length == 4 )//they supplied the wrong password
{
System.err.println( "Error: The supplied password is incorrect." );
System.exit( 2 );
}
else
{
//they didn't suppply a password and the default of "" was wrong.
System.err.println( "Error: The document is encrypted." );
usage();
}
}
}
splitter.setSplitAtPage( Integer.parseInt( split ) );
documents = splitter.split( document );
for( int i=0; i<documents.size(); i++ )
{
PDDocument doc = (PDDocument)documents.get( i );
String fileName = pdfFile.substring(0, pdfFile.length()-4 ) + "-" + i + ".pdf";
writeDocument( doc, fileName );
doc.close();
}
}
finally
{
if( input != null )
{
input.close();
}
if( document != null )
{
document.close();
}
for( int i=0; documents != null && i<documents.size(); i++ )
{
PDDocument doc = (PDDocument)documents.get( i );
doc.close();
}
}
}
}
private static final void writeDocument( PDDocument doc, String fileName ) throws IOException, COSVisitorException
{
FileOutputStream output = null;
COSWriter writer = null;
try
{
output = new FileOutputStream( fileName );
writer = new COSWriter( output );
writer.write( doc );
}
finally
{
if( output != null )
{
output.close();
}
if( writer != null )
{
writer.close();
}
}
}
/**
* This will parse a document.
*
* @param input The input stream for the document.
*
* @return The document.
*
* @throws IOException If there is an error parsing the document.
*/
private static PDDocument parseDocument( InputStream input )throws IOException
{
PDFParser parser = new PDFParser( input );
parser.parse();
return parser.getPDDocument();
}
/**
* This will print the usage requirements and exit.
*/
private static void usage()
{
System.err.println( "Usage: java org.apache.pdfbox.PDFSplit [OPTIONS] <PDF file>\n" +
" -password <password> Password to decrypt document\n" +
" -split <integer> split after this many pages\n" +
" <PDF file> The PDF document to use\n"
);
System.exit( 1 );
}
}