src/main/java/org/apache/log4j/xml/UtilLoggingXMLDecoder.java [161:248]:
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            document = docBuilder.parse(inputSource);
        } catch (Exception e) {
            e.printStackTrace();
        }

        return document;
    }

    /**
     * Decodes a File into a Vector of LoggingEvents.
     *
     * @param url the url of a file containing events to decode
     * @return Vector of LoggingEvents
     * @throws IOException if IO error during processing.
     */
    public Vector<ChainsawLoggingEvent> decode(final URL url) throws IOException {
        LineNumberReader reader;
        boolean isZipFile = url.getPath().toLowerCase().endsWith(".zip");
        InputStream inputStream;
        if (isZipFile) {
            inputStream = new ZipInputStream(url.openStream());
            //move stream to next entry so we can read it
            ((ZipInputStream) inputStream).getNextEntry();
        } else {
            inputStream = url.openStream();
        }
        if (owner != null) {
            reader = new LineNumberReader(
                new InputStreamReader(
                    new ProgressMonitorInputStream(owner,
                        "Loading " + url, inputStream), ENCODING));
        } else {
            reader = new LineNumberReader(new InputStreamReader(inputStream, ENCODING));
        }
        Vector<ChainsawLoggingEvent> v = new Vector<>();

        String line;
        Vector<ChainsawLoggingEvent> events;
        try {
            while ((line = reader.readLine()) != null) {
                StringBuilder buffer = new StringBuilder(line);
                for (int i = 0; i < 1000; i++) {
                    buffer.append(reader.readLine()).append("\n");
                }
                events = decodeEvents(buffer.toString());
                if (events != null) {
                    v.addAll(events);
                }
            }
        } finally {
            partialEvent = null;
            try {
                if (reader != null) {
                    reader.close();
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return v;
    }

    /**
     * Decodes a String representing a number of events into a
     * Vector of LoggingEvents.
     *
     * @param document to decode events from
     * @return Vector of LoggingEvents
     */
    public Vector<ChainsawLoggingEvent> decodeEvents(final String document) {

        if (document != null) {

            if (document.trim().equals("")) {
                return null;
            }

            String newDoc;
            String newPartialEvent = null;
            //separate the string into the last portion ending with </record>
            // (which will be processed) and the partial event which
            // will be combined and processed in the next section

            //if the document does not contain a record end,
            // append it to the partial event string
            if (document.lastIndexOf(RECORD_END) == -1) {
                partialEvent = partialEvent + document;
                return null;
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src/main/java/org/apache/log4j/xml/XMLDecoder.java [165:251]:
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            document = docBuilder.parse(inputSource);
        } catch (Exception e) {
            e.printStackTrace();
        }

        return document;
    }

    /**
     * Decodes a File into a Vector of LoggingEvents.
     *
     * @param url the url of a file containing events to decode
     * @return Vector of LoggingEvents
     * @throws IOException if IO error during processing.
     */
    public Vector<ChainsawLoggingEvent> decode(final URL url) throws IOException {
        LineNumberReader reader;
        boolean isZipFile = url.getPath().toLowerCase().endsWith(".zip");
        InputStream inputStream;
        if (isZipFile) {
            inputStream = new ZipInputStream(url.openStream());
            //move stream to next entry so we can read it
            ((ZipInputStream) inputStream).getNextEntry();
        } else {
            inputStream = url.openStream();
        }
        if (owner != null) {
            reader = new LineNumberReader(
                new InputStreamReader(
                    new ProgressMonitorInputStream(owner,
                        "Loading " + url, inputStream), ENCODING));
        } else {
            reader = new LineNumberReader(new InputStreamReader(inputStream, ENCODING));
        }

        Vector<ChainsawLoggingEvent> v = new Vector<>();

        String line;
        Vector<ChainsawLoggingEvent> events;
        try {
            while ((line = reader.readLine()) != null) {
                StringBuilder buffer = new StringBuilder(line);
                for (int i = 0; i < 1000; i++) {
                    buffer.append(reader.readLine()).append("\n");
                }
                events = decodeEvents(buffer.toString());
                if (events != null) {
                    v.addAll(events);
                }
            }
        } finally {
            partialEvent = null;
            try {
                if (reader != null) {
                    reader.close();
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return v;
    }

    /**
     * Decodes a String representing a number of events into a
     * Vector of LoggingEvents.
     *
     * @param document to decode events from
     * @return Vector of LoggingEvents
     */
    public Vector<ChainsawLoggingEvent> decodeEvents(final String document) {
        if (document != null) {
            if (document.trim().equals("")) {
                return null;
            }
            String newDoc;
            String newPartialEvent = null;
            //separate the string into the last portion ending with
            // </log4j:event> (which will be processed) and the
            // partial event which will be combined and
            // processed in the next section

            //if the document does not contain a record end,
            // append it to the partial event string
            if (document.lastIndexOf(RECORD_END) == -1) {
                partialEvent = partialEvent + document;
                return null;
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