--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jaxp/src/com/sun/org/apache/xml/internal/serialize/Printer.java Thu Apr 12 08:38:26 2012 -0700
@@ -0,0 +1,364 @@
+/*
+ * reserved comment block
+ * DO NOT REMOVE OR ALTER!
+ */
+/*
+ * Copyright 1999-2002,2004 The Apache Software Foundation.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+// Sep 14, 2000:
+// Fixed serializer to report IO exception directly, instead at
+// the end of document processing.
+// Reported by Patrick Higgins <phiggins@transzap.com>
+
+
+package com.sun.org.apache.xml.internal.serialize;
+
+
+import java.io.Writer;
+import java.io.StringWriter;
+import java.io.IOException;
+
+
+/**
+ * The printer is responsible for sending text to the output stream
+ * or writer. This class performs direct writing for efficiency.
+ * {@link IndentPrinter} supports indentation and line wrapping by
+ * extending this class.
+ *
+ * @author <a href="mailto:arkin@intalio.com">Assaf Arkin</a>
+ */
+public class Printer
+{
+
+
+ /**
+ * The output format associated with this serializer. This will never
+ * be a null reference. If no format was passed to the constructor,
+ * the default one for this document type will be used. The format
+ * object is never changed by the serializer.
+ */
+ protected final OutputFormat _format;
+
+
+ /**
+ * The writer to which the document is written.
+ */
+ protected Writer _writer;
+
+
+ /**
+ * The DTD writer. When we switch to DTD mode, all output is
+ * accumulated in this DTD writer. When we switch out of it,
+ * the output is obtained as a string. Must not be reset to
+ * null until we're done with the document.
+ */
+ protected StringWriter _dtdWriter;
+
+
+ /**
+ * Holds a reference to the document writer while we are
+ * in DTD mode.
+ */
+ protected Writer _docWriter;
+
+
+ /**
+ * Holds the exception thrown by the serializer. Exceptions do not cause
+ * the serializer to quit, but are held and one is thrown at the end.
+ */
+ protected IOException _exception;
+
+
+ /**
+ * The size of the output buffer.
+ */
+ private static final int BufferSize = 4096;
+
+
+ /**
+ * Output buffer.
+ */
+ private final char[] _buffer = new char[ BufferSize ];
+
+
+ /**
+ * Position within the output buffer.
+ */
+ private int _pos = 0;
+
+
+ public Printer( Writer writer, OutputFormat format)
+ {
+ _writer = writer;
+ _format = format;
+ _exception = null;
+ _dtdWriter = null;
+ _docWriter = null;
+ _pos = 0;
+ }
+
+
+ public IOException getException()
+ {
+ return _exception;
+ }
+
+
+ /**
+ * Called by any of the DTD handlers to enter DTD mode.
+ * Once entered, all output will be accumulated in a string
+ * that can be printed as part of the document's DTD.
+ * This method may be called any number of time but will only
+ * have affect the first time it's called. To exist DTD state
+ * and get the accumulated DTD, call {@link #leaveDTD}.
+ */
+ public void enterDTD()
+ throws IOException
+ {
+ // Can only enter DTD state once. Once we're out of DTD
+ // state, can no longer re-enter it.
+ if ( _dtdWriter == null ) {
+ flushLine( false );
+
+ _dtdWriter = new StringWriter();
+ _docWriter = _writer;
+ _writer = _dtdWriter;
+ }
+ }
+
+
+ /**
+ * Called by the root element to leave DTD mode and if any
+ * DTD parts were printer, will return a string with their
+ * textual content.
+ */
+ public String leaveDTD()
+ throws IOException
+ {
+ // Only works if we're going out of DTD mode.
+ if ( _writer == _dtdWriter ) {
+ flushLine( false );
+
+ _writer = _docWriter;
+ return _dtdWriter.toString();
+ } else
+ return null;
+ }
+
+
+ public void printText( String text )
+ throws IOException
+ {
+ try {
+ int length = text.length();
+ for ( int i = 0 ; i < length ; ++i ) {
+ if ( _pos == BufferSize ) {
+ _writer.write( _buffer );
+ _pos = 0;
+ }
+ _buffer[ _pos ] = text.charAt( i );
+ ++_pos;
+ }
+ } catch ( IOException except ) {
+ // We don't throw an exception, but hold it
+ // until the end of the document.
+ if ( _exception == null )
+ _exception = except;
+ throw except;
+ }
+ }
+
+
+ public void printText( StringBuffer text )
+ throws IOException
+ {
+ try {
+ int length = text.length();
+ for ( int i = 0 ; i < length ; ++i ) {
+ if ( _pos == BufferSize ) {
+ _writer.write( _buffer );
+ _pos = 0;
+ }
+ _buffer[ _pos ] = text.charAt( i );
+ ++_pos;
+ }
+ } catch ( IOException except ) {
+ // We don't throw an exception, but hold it
+ // until the end of the document.
+ if ( _exception == null )
+ _exception = except;
+ throw except;
+ }
+ }
+
+
+ public void printText( char[] chars, int start, int length )
+ throws IOException
+ {
+ try {
+ while ( length-- > 0 ) {
+ if ( _pos == BufferSize ) {
+ _writer.write( _buffer );
+ _pos = 0;
+ }
+ _buffer[ _pos ] = chars[ start ];
+ ++start;
+ ++_pos;
+ }
+ } catch ( IOException except ) {
+ // We don't throw an exception, but hold it
+ // until the end of the document.
+ if ( _exception == null )
+ _exception = except;
+ throw except;
+ }
+ }
+
+
+ public void printText( char ch )
+ throws IOException
+ {
+ try {
+ if ( _pos == BufferSize ) {
+ _writer.write( _buffer );
+ _pos = 0;
+ }
+ _buffer[ _pos ] = ch;
+ ++_pos;
+ } catch ( IOException except ) {
+ // We don't throw an exception, but hold it
+ // until the end of the document.
+ if ( _exception == null )
+ _exception = except;
+ throw except;
+ }
+ }
+
+
+ public void printSpace()
+ throws IOException
+ {
+ try {
+ if ( _pos == BufferSize ) {
+ _writer.write( _buffer );
+ _pos = 0;
+ }
+ _buffer[ _pos ] = ' ';
+ ++_pos;
+ } catch ( IOException except ) {
+ // We don't throw an exception, but hold it
+ // until the end of the document.
+ if ( _exception == null )
+ _exception = except;
+ throw except;
+ }
+ }
+
+
+ public void breakLine()
+ throws IOException
+ {
+ try {
+ if ( _pos == BufferSize ) {
+ _writer.write( _buffer );
+ _pos = 0;
+ }
+ _buffer[ _pos ] = '\n';
+ ++_pos;
+ } catch ( IOException except ) {
+ // We don't throw an exception, but hold it
+ // until the end of the document.
+ if ( _exception == null )
+ _exception = except;
+ throw except;
+ }
+ }
+
+
+ public void breakLine( boolean preserveSpace )
+ throws IOException
+ {
+ breakLine();
+ }
+
+
+ public void flushLine( boolean preserveSpace )
+ throws IOException
+ {
+ // Write anything left in the buffer into the writer.
+ try {
+ _writer.write( _buffer, 0, _pos );
+ } catch ( IOException except ) {
+ // We don't throw an exception, but hold it
+ // until the end of the document.
+ if ( _exception == null )
+ _exception = except;
+ }
+ _pos = 0;
+ }
+
+
+ /**
+ * Flush the output stream. Must be called when done printing
+ * the document, otherwise some text might be buffered.
+ */
+ public void flush()
+ throws IOException
+ {
+ try {
+ _writer.write( _buffer, 0, _pos );
+ _writer.flush();
+ } catch ( IOException except ) {
+ // We don't throw an exception, but hold it
+ // until the end of the document.
+ if ( _exception == null )
+ _exception = except;
+ throw except;
+ }
+ _pos = 0;
+ }
+
+
+ public void indent()
+ {
+ // NOOP
+ }
+
+
+ public void unindent()
+ {
+ // NOOP
+ }
+
+
+ public int getNextIndent()
+ {
+ return 0;
+ }
+
+
+ public void setNextIndent( int indent )
+ {
+ }
+
+
+ public void setThisIndent( int indent )
+ {
+ }
+
+
+}