tostream.java

来自「JAVA 所有包」· Java 代码 · 共 2,016 行 · 第 1/5 页

        writer.write(value);
        writer.write("\">");
        writer.write(m_lineSep, 0, m_lineSepLen);
    }

    /**
     * Output a system-dependent line break.
     *
     * @throws org.xml.sax.SAXException
     */
    protected final void outputLineSep() throws IOException
    {

        m_writer.write(m_lineSep, 0, m_lineSepLen);
    }

    /**
     * Specifies an output format for this serializer. It the
     * serializer has already been associated with an output format,
     * it will switch to the new format. This method should not be
     * called while the serializer is in the process of serializing
     * a document.
     *
     * @param format The output format to use
     */
    public void setOutputFormat(Properties format)
    {

        boolean shouldFlush = m_shouldFlush;

        init(m_writer, format, false, false);

        m_shouldFlush = shouldFlush;
    }

    /**
     * Initialize the serializer with the specified writer and output format.
     * Must be called before calling any of the serialize methods.
     * This method can be called multiple times and the xsl:output properties
     * passed in the 'format' parameter are accumulated across calls.
     *
     * @param writer The writer to use
     * @param format The output format
     * @param shouldFlush True if the writer should be flushed at EndDocument.
     */
    private synchronized void init(
        Writer writer,
        Properties format,
        boolean defaultProperties,
        boolean shouldFlush)
    {

        m_shouldFlush = shouldFlush;

        
        // if we are tracing events we need to trace what
        // characters are written to the output writer.
        if (m_tracer != null
         && !(writer instanceof SerializerTraceWriter)  )
            m_writer = new SerializerTraceWriter(writer, m_tracer);
        else
            m_writer = writer;        
        

        m_format = format;
        //        m_cdataSectionNames =
        //            OutputProperties.getQNameProperties(
        //                OutputKeys.CDATA_SECTION_ELEMENTS,
        //                format);
        setCdataSectionElements(OutputKeys.CDATA_SECTION_ELEMENTS, format);

        setIndentAmount(
            OutputPropertyUtils.getIntProperty(
                OutputPropertiesFactory.S_KEY_INDENT_AMOUNT,
                format));
        setIndent(
            OutputPropertyUtils.getBooleanProperty(OutputKeys.INDENT, format));
            
        {
            String sep = 
                    format.getProperty(OutputPropertiesFactory.S_KEY_LINE_SEPARATOR);
            if (sep != null) {
                m_lineSep = sep.toCharArray();
                m_lineSepLen = sep.length();
            }
        }

        boolean shouldNotWriteXMLHeader =
            OutputPropertyUtils.getBooleanProperty(
                OutputKeys.OMIT_XML_DECLARATION,
                format);
        setOmitXMLDeclaration(shouldNotWriteXMLHeader);
        setDoctypeSystem(format.getProperty(OutputKeys.DOCTYPE_SYSTEM));
        String doctypePublic = format.getProperty(OutputKeys.DOCTYPE_PUBLIC);
        setDoctypePublic(doctypePublic);

        // if standalone was explicitly specified
        if (format.get(OutputKeys.STANDALONE) != null)
        {
            String val = format.getProperty(OutputKeys.STANDALONE);
            if (defaultProperties)
                setStandaloneInternal(val);
            else
                setStandalone(val);
        }

        setMediaType(format.getProperty(OutputKeys.MEDIA_TYPE));

        if (null != doctypePublic)
        {
            if (doctypePublic.startsWith("-//W3C//DTD XHTML"))
                m_spaceBeforeClose = true;
        }

        /* 
         * This code is added for XML 1.1 Version output.
         */
        String version = getVersion();
        if (null == version)
        {
            version = format.getProperty(OutputKeys.VERSION);
            setVersion(version);
        }

        // initCharsMap();
        String encoding = getEncoding();
        if (null == encoding)
        {
            encoding =
                Encodings.getMimeEncoding(
                    format.getProperty(OutputKeys.ENCODING));
            setEncoding(encoding);
        }

        m_isUTF8 = encoding.equals(Encodings.DEFAULT_MIME_ENCODING);

        // Access this only from the Hashtable level... we don't want to 
        // get default properties.
        String entitiesFileName =
            (String) format.get(OutputPropertiesFactory.S_KEY_ENTITIES);

        if (null != entitiesFileName)
        {

            String method = 
                (String) format.get(OutputKeys.METHOD);
            
            m_charInfo = CharInfo.getCharInfo(entitiesFileName, method);
        }

    }

    /**
     * Initialize the serializer with the specified writer and output format.
     * Must be called before calling any of the serialize methods.
     *
     * @param writer The writer to use
     * @param format The output format
     */
    private synchronized void init(Writer writer, Properties format)
    {
        init(writer, format, false, false);
    }
    /**
     * Initialize the serializer with the specified output stream and output
     * format. Must be called before calling any of the serialize methods.
     *
     * @param output The output stream to use
     * @param format The output format
     * @param defaultProperties true if the properties are the default
     * properties
     * 
     * @throws UnsupportedEncodingException The encoding specified   in the
     * output format is not supported
     */
    protected synchronized void init(
        OutputStream output,
        Properties format,
        boolean defaultProperties)
        throws UnsupportedEncodingException
    {

        String encoding = getEncoding();
        if (encoding == null)
        {
            // if not already set then get it from the properties
            encoding =
                Encodings.getMimeEncoding(
                    format.getProperty(OutputKeys.ENCODING));
            setEncoding(encoding);
        }

        if (encoding.equalsIgnoreCase("UTF-8"))
        {
            m_isUTF8 = true;
            //            if (output instanceof java.io.BufferedOutputStream)
            //            {
            //                init(new WriterToUTF8(output), format, defaultProperties, true);
            //            }
            //            else if (output instanceof java.io.FileOutputStream)
            //            {
            //                init(new WriterToUTF8Buffered(output), format, defaultProperties, true);
            //            }
            //            else
            //            {
            //                // Not sure what to do in this case.  I'm going to be conservative 
            //                // and not buffer.
            //                init(new WriterToUTF8(output), format, defaultProperties, true);
            //            }
         

                init(
                    new WriterToUTF8Buffered(output),
                    format,
                    defaultProperties,
                    true);


        }
        else if (
            encoding.equals("WINDOWS-1250")
                || encoding.equals("US-ASCII")
                || encoding.equals("ASCII"))
        {
            init(new WriterToASCI(output), format, defaultProperties, true);
        }
        else
        {
            Writer osw;

            try
            {
                osw = Encodings.getWriter(output, encoding);
            }
            catch (UnsupportedEncodingException uee)
            {
                System.out.println(
                    "Warning: encoding \""
                        + encoding
                        + "\" not supported"
                        + ", using "
                        + Encodings.DEFAULT_MIME_ENCODING);

                encoding = Encodings.DEFAULT_MIME_ENCODING;
                setEncoding(encoding);
                osw = Encodings.getWriter(output, encoding);
            }

            init(osw, format, defaultProperties, true);
        }

    }

    /**
     * Returns the output format for this serializer.
     *
     * @return The output format in use
     */
    public Properties getOutputFormat()
    {
        return m_format;
    }

    /**
     * Specifies a writer to which the document should be serialized.
     * This method should not be called while the serializer is in
     * the process of serializing a document.
     *
     * @param writer The output writer stream
     */
    public void setWriter(Writer writer)
    {        
        // if we are tracing events we need to trace what 
        // characters are written to the output writer.
        if (m_tracer != null
         && !(writer instanceof SerializerTraceWriter)  )
            m_writer = new SerializerTraceWriter(writer, m_tracer);
        else
            m_writer = writer;
    }
    
    /**
     * Set if the operating systems end-of-line line separator should
     * be used when serializing.  If set false NL character 
     * (decimal 10) is left alone, otherwise the new-line will be replaced on
     * output with the systems line separator. For example on UNIX this is
     * NL, while on Windows it is two characters, CR NL, where CR is the
     * carriage-return (decimal 13).
     *  
     * @param use_sytem_line_break True if an input NL is replaced with the 
     * operating systems end-of-line separator.
     * @return The previously set value of the serializer.
     */
    public boolean setLineSepUse(boolean use_sytem_line_break)
    {
        boolean oldValue = m_lineSepUse;
        m_lineSepUse = use_sytem_line_break;
        return oldValue;
    }

    /**
     * Specifies an output stream to which the document should be
     * serialized. This method should not be called while the
     * serializer is in the process of serializing a document.
     * <p>
     * The encoding specified in the output properties is used, or
     * if no encoding was specified, the default for the selected
     * output method.
     *
     * @param output The output stream
     */
    public void setOutputStream(OutputStream output)
    {

        try
        {
            Properties format;
            if (null == m_format)
                format =
                    OutputPropertiesFactory.getDefaultMethodProperties(
                        Method.XML);
            else
                format = m_format;
            init(output, format, true);
        }
        catch (UnsupportedEncodingException uee)
        {

            // Should have been warned in init, I guess...
        }
    }

    /**
     * @see SerializationHandler#setEscaping(boolean)
     */
    public boolean setEscaping(boolean escape)
    {
        final boolean temp = m_escaping;
        m_escaping = escape;
        return temp;

    }


    /**
     * Might print a newline character and the indentation amount
     * of the given depth.
     * 
     * @param depth the indentation depth (element nesting depth)
     *
     * @throws org.xml.sax.SAXException if an error occurs during writing.
     */
    protected void indent(int depth) throws IOException
    {

        if (m_startNewLine)
            outputLineSep();
        /* For m_indentAmount > 0 this extra test might be slower
         * but Xalan's default value is 0, so this extra test
         * will run faster in that situation.
         */
        if (m_indentAmount > 0)
            printSpace(depth * m_indentAmount);

    }
    
    /**
     * Indent at the current element nesting depth.
     * @throws IOException
     */
    protected void indent() throws IOException
    {
        indent(m_elemContext.m_currentElemDepth);
    }
    /**
     * Prints <var>n</var> spaces.
     * @param n         Number of spaces to print.
     *
     * @throws org.xml.sax.SAXException if an error occurs when writing.
     */
    private void printSpace(int n) throws IOException
    {
        final java.io.Writer writer = m_writer;
        for (int i = 0; i < n; i++)
        {
            writer.write(' ');
        }

    }

    /**
     * Report an attribute type declaration.
     *
     * <p>Only the effective (first) declaration for an attribute will
     * be reported.  The type will be one of the strings "CDATA",
     * "ID", "IDREF", "IDREFS", "NMTOKEN", "NMTOKENS", "ENTITY",
     * "ENTITIES", or "NOTATION", or a parenthesized token group with
     * the separator "|" and all whitespace removed.</p>
     *
     * @param eName The name of the associated element.
     * @param aName The name of the attribute.
     * @param type A string representing the attribute type.
     * @param valueDefault A string representing the attribute default
     *        ("#IMPLIED", "#REQUIRED", or "#FIXED") or null if