First of all, I’m an engineering student and not the best programmer.
To learn more I ask my dad if he has a task for me (not a programmer at all)
He wants a program to convert pdf to XML, examine the text in the XML, translate it, afterward back in the XML file and convert the XML back to pdf.
After lots and lots of reading, I found LibreOffice and the document converter. A website(aconvert) uses LibreOffice to the conversion between the different file types.
After a few days and a lot of searching in this forum, I was able to convert my first files. [Thanks a lot to all of you]
I converted the PDFs to fodg (which is my favorable file type besides “normal” XML), but the files have less data than the file I converted ‘by hand‘. (converted, filter: draw8 135 kb, draw_pdf_export: 150kb, by hand 370kb)
1. So how does this happened? Is it because of the read-only mode situation? Or because the file isn’t normally opened?
I tried to read about this, but I didn’t found any convincing solution. If I add a PropertyValue to load the Document (ReadOnly=False) the code doesn’t work.
Code: Select all
// Loading the wanted document
com.sun.star.beans.PropertyValue propertyValues[] =
new com.sun.star.beans.PropertyValue[2];
propertyValues[0] = new com.sun.star.beans.PropertyValue();
propertyValues[0].Name = "Hidden";
propertyValues[0].Value = Boolean.TRUE;
propertyValues[1] = new com.sun.star.beans.PropertyValue();
propertyValues[1].Name = "ReadOnly";
propertyValues[1].Value = Boolean.FALSE;I use Java, especially eclipse, windows 10, LibreOffice 6.1, pdf 1.6 and the filter names: draw8 or draw_pdf-export (didn’t find any other that would work, nor an actual list after LibreOffice version 3.5)
Thank you and have a nice day,
Rey
Whole Code ( The nearly original example)
Code: Select all
/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* The Contents of this file are made available subject to the terms of
* the BSD license.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Sun Microsystems, Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*************************************************************************/
import com.sun.star.uno.UnoRuntime;
import java.io.File;
import ooo.connector.BootstrapSocketConnector;
/** The class <CODE>DocumentConverter</CODE> allows you to convert all documents
* in a given directory and in its subdirectories to a given type. A converted
* document will be created in the same directory as the origin document.
*
*/
public class DocumentConverter {
/** Containing the loaded documents
*/
static com.sun.star.frame.XComponentLoader xCompLoader = null;
/** Containing the given type to convert to
*/
static String sConvertType = "";
/** Containing the given extension
*/
static String sExtension = "";
/** Containing the current file or directory
*/
static String sIndent = "";
/** Containing the directory where the converted files are saved
*/
static String sOutputDir = "";
/** Traversing the given directory recursively and converting their files to
* the favoured type if possible
* @param fileDirectory Containing the directory
*/
static void traverse( File fileDirectory ) {
// Testing, if the file is a directory, and if so, it throws an exception
if ( !fileDirectory.isDirectory() ) {
throw new IllegalArgumentException(
"not a directory: " + fileDirectory.getName()
);
}
// Prepare Url for the output directory
File outdir = new File(DocumentConverter.sOutputDir);
String sOutUrl = "file:///" + outdir.getAbsolutePath().replace( '\\', '/' );
System.out.println("\nThe converted documents will stored in \""
+ outdir.getPath() + "!");
System.out.println(sIndent + "[" + fileDirectory.getName() + "]");
sIndent += " ";
// Getting all files and directories in the current directory
File[] entries = fileDirectory.listFiles();
// Iterating for each file and directory
for ( int i = 0; i < entries.length; ++i ) {
// Testing, if the entry in the list is a directory
if ( entries[ i ].isDirectory() ) {
// Recursive call for the new directory
traverse( entries[ i ] );
} else {
// Converting the document to the favoured type
try {
// Composing the URL by replacing all backslashes
String sUrl = "file:///"
+ entries[ i ].getAbsolutePath().replace( '\\', '/' );
// Loading the wanted document
com.sun.star.beans.PropertyValue propertyValues[] =
new com.sun.star.beans.PropertyValue[1];
propertyValues[0] = new com.sun.star.beans.PropertyValue();
propertyValues[0].Name = "Hidden";
propertyValues[0].Value = Boolean.TRUE;
Object oDocToStore =
DocumentConverter.xCompLoader.loadComponentFromURL(
sUrl, "_blank", 0, propertyValues);
// Getting an object that will offer a simple way to store
// a document to a URL.
com.sun.star.frame.XStorable xStorable =
UnoRuntime.queryInterface(
com.sun.star.frame.XStorable.class, oDocToStore );
// Preparing properties for converting the document
propertyValues = new com.sun.star.beans.PropertyValue[2];
// Setting the flag for overwriting
propertyValues[0] = new com.sun.star.beans.PropertyValue();
propertyValues[0].Name = "Overwrite";
propertyValues[0].Value = Boolean.TRUE;
// Setting the filter name
propertyValues[1] = new com.sun.star.beans.PropertyValue();
propertyValues[1].Name = "FilterName";
propertyValues[1].Value = DocumentConverter.sConvertType;
// Appending the favoured extension to the origin document name
int index1 = sUrl.lastIndexOf('/');
int index2 = sUrl.lastIndexOf('.');
String sStoreUrl = sOutUrl + sUrl.substring(index1, index2 + 1)
+ DocumentConverter.sExtension;
// Storing and converting the document
xStorable.storeAsURL(sStoreUrl, propertyValues);
// Closing the converted document. Use XCloseable.close if the
// interface is supported, otherwise use XComponent.dispose
com.sun.star.util.XCloseable xCloseable =
UnoRuntime.queryInterface(
com.sun.star.util.XCloseable.class, xStorable);
if ( xCloseable != null ) {
xCloseable.close(false);
} else {
com.sun.star.lang.XComponent xComp =
UnoRuntime.queryInterface(
com.sun.star.lang.XComponent.class, xStorable);
xComp.dispose();
}
}
catch( Exception e ) {
e.printStackTrace(System.err);
}
System.out.println(sIndent + entries[ i ].getName());
}
}
sIndent = sIndent.substring(2);
}
/** Bootstrap UNO, getting the remote component context, getting a new instance
* of the desktop (used interface XComponentLoader) and calling the
* static method traverse
* @param args The array of the type String contains the directory, in which
* all files should be converted, the favoured converting type
* and the wanted extension
*/
public static void main( String args[] ) {
if ( args.length < 3 ) {
System.out.println("usage: java -jar DocumentConverter.jar " +
"\"<directory to convert>\" \"<type to convert to>\" " +
"\"<extension>\" \"<output_directory>\"");
System.out.println("\ne.g.:");
System.out.println("usage: java -jar DocumentConverter.jar " +
"\"c:/myoffice\" \"swriter: MS Word 97\" \"doc\"");
System.exit(1);
}
com.sun.star.uno.XComponentContext xContext = null;
try {
// get the remote office component context
String oooExeFolder = "C:\\Program Files\\LibreOffice\\program";
xContext = BootstrapSocketConnector.bootstrap(oooExeFolder);
System.out.println("Connected to a running office ...");
// get the remote office service manager
com.sun.star.lang.XMultiComponentFactory xMCF =
xContext.getServiceManager();
Object oDesktop = xMCF.createInstanceWithContext(
"com.sun.star.frame.Desktop", xContext);
xCompLoader = UnoRuntime.queryInterface(com.sun.star.frame.XComponentLoader.class,
oDesktop);
// Getting the given starting directory
File file = new File(args[0]);
// Getting the given type to convert to
sConvertType = args[1];
// Getting the given extension that should be appended to the
// origin document
sExtension = args[2];
// Getting the given type to convert to
sOutputDir = args[3];
// Starting the conversion of documents in the given directory
// and subdirectories
traverse(file);
System.exit(0);
} catch( Exception e ) {
e.printStackTrace(System.err);
System.exit(1);
}
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
