Example usage for javax.xml.stream XMLStreamReader getEncoding

Introduction

In this page you can find the example usage for javax.xml.stream XMLStreamReader getEncoding.

Prototype

public String getEncoding();

Source Link

Document

Return input encoding if known or null if unknown.

Usage

From source file:Main.java

public static void main(String[] args) throws Exception {
    File file = new File("yourXML.xml");
    FileInputStream inputStream = new FileInputStream(file);
    XMLInputFactory inputFactory = XMLInputFactory.newInstance();
    XMLStreamReader reader = inputFactory.createXMLStreamReader(inputStream);

    System.out.println(reader.getVersion());
    System.out.println(reader.isStandalone());
    System.out.println(reader.standaloneSet());
    System.out.println(reader.getEncoding());
    System.out.println(reader.getCharacterEncodingScheme());

    parseRestOfDocument(reader);/*from w ww. j  av a 2  s  . co  m*/
}

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From source file:Main.java

public static boolean hasValidXmlDeclaration(byte[] doc) throws Exception {
    try {//ww w.ja  v  a 2  s .com
        XMLStreamReader r = xif.createXMLStreamReader(new ByteArrayInputStream(doc), null);
        if (!"UTF-8".equalsIgnoreCase(r.getEncoding()))
            return false;
        if (!"1.0".equals(r.getVersion()))
            return false;

        r.close();
        return true;
    } catch (XMLStreamException e) {
        throw new Exception("Unable to parse xml", e);
    }
}

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From source file:com.gtdfree.test.XMLTest.java

public void testParserEncoding() {

    try {/*from w  w  w  . j  a  va2  s .  co m*/

        File file = new File("./src/test/resources/gtd-free-data_2.1.xml");
        InputStream is = new FileInputStream(file);
        XMLStreamReader r = XMLInputFactory.newInstance().createXMLStreamReader(is);
        System.out.println(r.getEncoding());
        assertEquals("UTF-8", r.getEncoding());
        while (r.hasNext()) {
            r.next();
        }
        r.close();
        is.close();

        file = new File("./src/test/resources/gtd-free-data_WIN1250_2.1.xml");
        is = new FileInputStream(file);
        r = XMLInputFactory.newInstance().createXMLStreamReader(is);
        System.out.println(r.getEncoding());
        assertEquals("UTF-8", r.getEncoding());
        try {
            while (r.hasNext()) {
                r.next();
            }
            fail("This should not happend.");
        } catch (Exception e) {
            //e.printStackTrace();
        }
        r.close();
        is.close();

        file = new File("./src/test/resources/gtd-free-data_2.1_enc.xml");
        is = new FileInputStream(file);
        r = XMLInputFactory.newInstance().createXMLStreamReader(is);
        System.out.println(r.getEncoding());
        assertEquals("UTF-8", r.getEncoding());
        while (r.hasNext()) {
            r.next();
        }
        r.close();
        is.close();

        file = new File("./src/test/resources/gtd-free-data_WIN1250_2.1_enc.xml");
        is = new FileInputStream(file);
        r = XMLInputFactory.newInstance().createXMLStreamReader(is);
        System.out.println(r.getEncoding());
        assertEquals("WINDOWS-1250", r.getEncoding());
        while (r.hasNext()) {
            r.next();
        }
        r.close();
        is.close();

    } catch (Exception e) {

        e.printStackTrace();
        fail(e.getMessage());

    }

}

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From source file:StAXStreamTreeViewer.java

private void addStartDocumentNodes(XMLStreamReader reader, DefaultMutableTreeNode current) {
    DefaultMutableTreeNode version = new DefaultMutableTreeNode(reader.getVersion());
    current.add(version);//from  www.jav a 2  s .  c o m

    DefaultMutableTreeNode standalone = new DefaultMutableTreeNode(reader.isStandalone());
    current.add(standalone);

    DefaultMutableTreeNode standaloneSet = new DefaultMutableTreeNode(reader.standaloneSet());
    current.add(standaloneSet);

    DefaultMutableTreeNode encoding = new DefaultMutableTreeNode(reader.getEncoding());
    current.add(encoding);

    DefaultMutableTreeNode declaredEncoding = new DefaultMutableTreeNode(reader.getCharacterEncodingScheme());
    current.add(declaredEncoding);
}

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From source file:org.apache.axiom.om.impl.builder.StAXBuilder.java

/**
 * Constructor StAXBuilder./*ww w .jav  a2  s. c  om*/
 * This constructor is used if the parser is at the beginning (START_DOCUMENT).
 *
 * @param ombuilderFactory
 * @param parser
 */
protected StAXBuilder(OMFactory ombuilderFactory, XMLStreamReader parser) {
    omfactory = ombuilderFactory;

    // The getEncoding information is only available at the START_DOCUMENT event.
    charEncoding = parser.getEncoding();

    initParser(parser);
}

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From source file:org.gtdfree.model.GTDDataXMLTools.java

static public DataHeader load(GTDModel model, InputStream in) throws XMLStreamException, IOException {

    model.setSuspendedForMultipleChanges(true);
    model.getDataRepository().suspend(true);

    XMLStreamReader r;
    try {//from   www .j  av  a  2 s. co  m

        // buffer size is same as default in 1.6, we explicitly request it so, not to brake if defaut changes.
        BufferedInputStream bin = new BufferedInputStream(in, 8192);
        bin.mark(8191);

        Reader rr = new InputStreamReader(bin);
        CharBuffer b = CharBuffer.allocate(96);
        rr.read(b);
        b.position(0);
        //System.out.println(b);
        Pattern pattern = Pattern.compile("<\\?.*?encoding\\s*?=.*?\\?>", Pattern.CASE_INSENSITIVE); //$NON-NLS-1$
        Matcher matcher = pattern.matcher(b);

        // reset back to start of file
        bin.reset();

        // we check if encoding is defined in xml, by the book encoding on r should be null if not defined in xml,
        // but in reality it can be arbitrary if not defined in xml. So we have to check ourselves.
        if (matcher.find()) {
            //System.out.println(matcher);
            // if defined, then XML parser will pick it up and use it
            r = XMLInputFactory.newInstance().createXMLStreamReader(bin);
            Logger.getLogger(GTDDataXMLTools.class).info("XML declared encoding: " + r.getEncoding() //$NON-NLS-1$
                    + ", system default encoding: " + Charset.defaultCharset()); //$NON-NLS-1$
        } else {
            //System.out.println(matcher);
            // if not defined, then we assume it is generated by gtd-free version 0.4 or some local editor,
            // so we assume system default encoding.
            r = XMLInputFactory.newInstance().createXMLStreamReader(new InputStreamReader(bin));
            Logger.getLogger(GTDDataXMLTools.class)
                    .info("XML assumed system default encoding: " + Charset.defaultCharset()); //$NON-NLS-1$
        }

        r.nextTag();
        if ("gtd-data".equals(r.getLocalName())) { //$NON-NLS-1$
            DataHeader dh = new DataHeader(null, r.getAttributeValue(null, "version"), //$NON-NLS-1$
                    r.getAttributeValue(null, "modified")); //$NON-NLS-1$
            if (dh.version != null) {
                if (dh.version.equals("2.0")) { //$NON-NLS-1$
                    r.nextTag();
                    _load_2_0(model, r);
                    return dh;
                }
            }
            String s = r.getAttributeValue(null, "lastActionID"); //$NON-NLS-1$
            if (s != null) {
                try {
                    model.setLastActionID(Integer.parseInt(s));
                } catch (Exception e) {
                    Logger.getLogger(GTDDataXMLTools.class).debug("Internal error.", e); //$NON-NLS-1$
                }
            }
            if (dh.version != null) {
                if (dh.version.equals("2.1")) { //$NON-NLS-1$
                    r.nextTag();
                    _load_2_1(model, r);
                    return dh;

                }
                if (dh.version.startsWith("2.2")) { //$NON-NLS-1$
                    r.nextTag();
                    _load_2_2(model, r);
                    return dh;
                }
            }
            throw new IOException("XML gtd-free data with version number " + dh.version //$NON-NLS-1$
                    + " can not be imported. Data version is newer then supported versions. Update your GTD-Free application to latest version."); //$NON-NLS-1$
        }

        _load_1_0(model, r);

        return null;

    } catch (XMLStreamException e) {
        if (e.getNestedException() != null) {
            Logger.getLogger(GTDDataXMLTools.class).debug("Parse error.", e.getNestedException()); //$NON-NLS-1$
        } else {
            Logger.getLogger(GTDDataXMLTools.class).debug("Parse error.", e); //$NON-NLS-1$
        }
        throw e;
    } catch (IOException e) {
        throw e;
    } finally {
        model.setSuspendedForMultipleChanges(false);
        model.getDataRepository().suspend(false);
    }

}

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From source file:org.rhq.plugins.hadoop.HadoopServerConfigurationDelegate.java

private static void updateFile(File configFile, Map<String, PropertySimple> allProps)
        throws IOException, InterruptedException, XMLStreamException {
    InputStream in = null;/* ww w .  j ava  2  s  . co  m*/
    XMLStreamReader rdr = null;

    OutputStream out = null;
    XMLStreamWriter outWrt = null;

    try {
        Set<String> processedPropertyNames = new HashSet<String>();

        in = new BufferedInputStream(new FileInputStream(configFile));
        rdr = XML_INPUT_FACTORY.createXMLStreamReader(in);

        File tmpFile = File.createTempFile("hadoop-plugin", null);
        out = new FileOutputStream(tmpFile);
        outWrt = XML_OUTPUT_FACTORY.createXMLStreamWriter(out);

        ByteArrayOutputStream stash = new ByteArrayOutputStream();
        XMLStreamWriter stashWrt = XML_OUTPUT_FACTORY.createXMLStreamWriter(stash);
        boolean outputActive = true;

        outWrt.writeStartDocument();

        while (rdr.hasNext()) {
            int event = rdr.next();

            XMLStreamWriter wrt = outputActive ? outWrt : stashWrt;

            switch (event) {
            case XMLStreamConstants.ATTRIBUTE:
                break;
            case XMLStreamConstants.CDATA:
                wrt.writeCData(rdr.getText());
                break;
            case XMLStreamConstants.CHARACTERS:
                wrt.writeCharacters(rdr.getText());
                break;
            case XMLStreamConstants.COMMENT:
                wrt.writeComment(rdr.getText());
                break;
            case XMLStreamConstants.DTD:
                wrt.writeDTD(rdr.getText());
                break;
            case XMLStreamConstants.END_DOCUMENT:
                wrt.writeEndDocument();
                break;
            case XMLStreamConstants.END_ELEMENT:
                if (PROPERTY_TAG_NAME.equals(rdr.getName().getLocalPart())) {
                    String encoding = rdr.getEncoding();
                    if (encoding == null) {
                        encoding = "UTF-8";
                    }

                    String propertyTagSoFar = Charset.forName(encoding)
                            .decode(ByteBuffer.wrap(stash.toByteArray())).toString();
                    DetectedPropertyNameAndUpdatedTag propAndTag = updateProperty(propertyTagSoFar, allProps);

                    //yes, we're intentionally circumventing the xml stream writer, because we already have the XML data we want to write.
                    outWrt.flush();
                    out.write(propAndTag.updatedTag.getBytes("UTF-8"));

                    processedPropertyNames.add(propAndTag.propertyName);

                    //reset stuff
                    stash.reset();
                    wrt = outWrt;
                    outputActive = true;
                } else if (CONFIGURATION_TAG_NAME.equals(rdr.getName().getLocalPart())) {
                    //now add the new props
                    for (String prop : processedPropertyNames) {
                        allProps.remove(prop);
                    }

                    for (Map.Entry<String, PropertySimple> e : allProps.entrySet()) {
                        outWrt.writeStartElement(PROPERTY_TAG_NAME);

                        outWrt.writeStartElement(NAME_TAG_NAME);
                        outWrt.writeCharacters(e.getKey());
                        outWrt.writeEndElement();

                        outWrt.writeStartElement(VALUE_TAG_NAME);
                        outWrt.writeCharacters(e.getValue().getStringValue());
                        outWrt.writeEndElement();

                        outWrt.writeEndElement();
                    }
                }
                wrt.writeEndElement();
                break;
            case XMLStreamConstants.ENTITY_DECLARATION:
                //XXX could not find what to do with this
                break;
            case XMLStreamConstants.ENTITY_REFERENCE:
                wrt.writeEntityRef(rdr.getText());
                break;
            case XMLStreamConstants.NAMESPACE:
                for (int i = 0; i < rdr.getNamespaceCount(); ++i) {
                    wrt.writeNamespace(rdr.getNamespacePrefix(i), rdr.getNamespaceURI(i));
                }
                break;
            case XMLStreamConstants.NOTATION_DECLARATION:
                //XXX could not find what to do with this
                break;
            case XMLStreamConstants.PROCESSING_INSTRUCTION:
                wrt.writeProcessingInstruction(rdr.getPITarget(), rdr.getPIData());
                break;
            case XMLStreamConstants.SPACE:
                wrt.writeCharacters(rdr.getText());
                break;
            case XMLStreamConstants.START_DOCUMENT:
                //this seems to be never called for some strange reason
                //wrt.writeStartDocument();
                break;
            case XMLStreamConstants.START_ELEMENT:
                wrt.writeStartElement(rdr.getName().getPrefix(), rdr.getName().getLocalPart(),
                        rdr.getName().getNamespaceURI());

                for (int i = 0; i < rdr.getAttributeCount(); ++i) {
                    wrt.writeAttribute(rdr.getAttributePrefix(i), rdr.getAttributeNamespace(i),
                            rdr.getAttributeLocalName(i), rdr.getAttributeValue(i));
                }

                if (PROPERTY_TAG_NAME.equals(rdr.getName().getLocalPart())) {
                    wrt.writeCharacters("");
                    outputActive = false;
                }
                break;
            }
        }

        outWrt.flush();
        out.flush();
        out.close();

        in.close();

        //now copy the temp file in the place of the original one
        FileUtil.copyFile(tmpFile, configFile);
    } finally {
        rdr.close();

        outWrt.flush();
        outWrt.close();

        try {
            in.close();
        } finally {
            out.flush();
            out.close();
        }
    }
}

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