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- /*
- * Copyright (C) 2001 The Apache Software Foundation. All rights reserved.
- * For details on use and redistribution please refer to the
- * LICENSE file included with these sources."
- */
-
-
- package org.apache.fop.apps;
-
- // SAX
- import org.xml.sax.InputSource;
- import org.xml.sax.XMLReader;
-
- // Java
- import java.net.URL;
- import java.io.File;
-
- // FOP
- import org.apache.fop.messaging.MessageHandler;
- import org.apache.fop.configuration.Configuration;
-
-
- abstract public class InputHandler {
-
-
- abstract public InputSource getInputSource();
- abstract public XMLReader getParser() throws FOPException;
-
-
- /**
- * create an InputSource from a File
- *
- * @param file the File
- * @return the InputSource created
- */
- static public InputSource fileInputSource(File file) {
- /* this code adapted from James Clark's in XT */
- String path = file.getAbsolutePath();
- String fSep = System.getProperty("file.separator");
- if (fSep != null && fSep.length() == 1)
- path = path.replace(fSep.charAt(0), '/');
- if (path.length() > 0 && path.charAt(0) != '/')
- path = '/' + path;
- try {
- return new InputSource(new URL("file", null, path).toString());
- } catch (java.net.MalformedURLException e) {
- throw new Error("unexpected MalformedURLException");
- }
- }
-
- /**
- * creates a SAX parser, using the value of org.xml.sax.parser
- * defaulting to org.apache.xerces.parsers.SAXParser
- *
- * @return the created SAX parser
- */
- protected static XMLReader createParser()
- throws FOPException
- {
- String parserClassName = System.getProperty("org.xml.sax.parser");
- if (parserClassName == null) {
- parserClassName = "org.apache.xerces.parsers.SAXParser";
- }
- MessageHandler.logln("using SAX parser " + parserClassName);
-
- try {
- return (XMLReader) Class.forName(
- parserClassName).newInstance();
- } catch (ClassNotFoundException e) {
- throw new FOPException(e);
- }
- catch (InstantiationException e) {
- throw new FOPException("Could not instantiate " +
- parserClassName,e);
- }
- catch (IllegalAccessException e) {
- throw new FOPException("Could not access " + parserClassName,e);
- }
- catch (ClassCastException e) {
- throw new FOPException(parserClassName + " is not a SAX driver",e);
- }
- }
- }
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