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apache / xalan-j / refs/heads/xalan-j_2_7_x / . / src / org / apache / xml / serializer / ToStream.java
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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
/*
* $Id$
*/
package org.apache.xml.serializer;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.io.Writer;
import java.util.EmptyStackException;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.Properties;
import java.util.Set;
import java.util.StringTokenizer;
import java.util.Vector;
import javax.xml.transform.ErrorListener;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import org.apache.xml.serializer.utils.MsgKey;
import org.apache.xml.serializer.utils.Utils;
import org.apache.xml.serializer.utils.WrappedRuntimeException;
import org.w3c.dom.Node;
import org.xml.sax.Attributes;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;
/**
* This abstract class is a base class for other stream
* serializers (xml, html, text ...) that write output to a stream.
*
* @xsl.usage internal
*/
abstract public class ToStream extends SerializerBase
{
private static final String COMMENT_BEGIN = "<!--";
private static final String COMMENT_END = "-->";
/** Stack to keep track of disabling output escaping. */
protected BoolStack m_disableOutputEscapingStates = new BoolStack();
/**
* The encoding information associated with this serializer.
* Although initially there is no encoding,
* there is a dummy EncodingInfo object that will say
* that every character is in the encoding. This is useful
* for a serializer that is in temporary output state and has
* no associated encoding. A serializer in final output state
* will have an encoding, and will worry about whether
* single chars or surrogate pairs of high/low chars form
* characters in the output encoding.
*/
EncodingInfo m_encodingInfo = new EncodingInfo(null,null, '\u0000');
/**
* Stack to keep track of whether or not we need to
* preserve whitespace.
*
* Used to push/pop values used for the field m_ispreserve, but
* m_ispreserve is only relevant if m_doIndent is true.
* If m_doIndent is false this field has no impact.
*
*/
protected BoolStack m_preserves = new BoolStack();
/**
* State flag to tell if preservation of whitespace
* is important.
*
* Used only in shouldIndent() but only if m_doIndent is true.
* If m_doIndent is false this flag has no impact.
*
*/
protected boolean m_ispreserve = false;
/**
* State flag that tells if the previous node processed
* was text, so we can tell if we should preserve whitespace.
*
* Used in endDocument() and shouldIndent() but
* only if m_doIndent is true.
* If m_doIndent is false this flag has no impact.
*/
protected boolean m_isprevtext = false;
private static final char[] s_systemLineSep;
static {
SecuritySupport ss = SecuritySupport.getInstance();
s_systemLineSep = ss.getSystemProperty("line.separator").toCharArray();
}
/**
* The system line separator for writing out line breaks.
* The default value is from the system property,
* but this value can be set through the xsl:output
* extension attribute xalan:line-separator.
*/
protected char[] m_lineSep = s_systemLineSep;
/**
* True if the the system line separator is to be used.
*/
protected boolean m_lineSepUse = true;
/**
* The length of the line seperator, since the write is done
* one character at a time.
*/
protected int m_lineSepLen = m_lineSep.length;
/**
* Map that tells which characters should have special treatment, and it
* provides character to entity name lookup.
*/
protected CharInfo m_charInfo;
/** True if we control the buffer, and we should flush the output on endDocument. */
boolean m_shouldFlush = true;
/**
* Add space before '/>' for XHTML.
*/
protected boolean m_spaceBeforeClose = false;
/**
* Flag to signal that a newline should be added.
*
* Used only in indent() which is called only if m_doIndent is true.
* If m_doIndent is false this flag has no impact.
*/
boolean m_startNewLine;
/**
* Tells if we're in an internal document type subset.
*/
protected boolean m_inDoctype = false;
/**
* Flag to quickly tell if the encoding is UTF8.
*/
boolean m_isUTF8 = false;
/**
* remembers if we are in between the startCDATA() and endCDATA() callbacks
*/
protected boolean m_cdataStartCalled = false;
/**
* If this flag is true DTD entity references are not left as-is,
* which is exiting older behavior.
*/
private boolean m_expandDTDEntities = true;
/**
* Default constructor
*/
public ToStream()
{
}
/**
* This helper method to writes out "]]>" when closing a CDATA section.
*
* @throws org.xml.sax.SAXException
*/
protected void closeCDATA() throws org.xml.sax.SAXException
{
try
{
m_writer.write(CDATA_DELIMITER_CLOSE);
// write out a CDATA section closing "]]>"
m_cdataTagOpen = false; // Remember that we have done so.
}
catch (IOException e)
{
throw new SAXException(e);
}
}
/**
* Serializes the DOM node. Throws an exception only if an I/O
* exception occured while serializing.
*
* @param node Node to serialize.
* @throws IOException An I/O exception occured while serializing
*/
public void serialize(Node node) throws IOException
{
try
{
TreeWalker walker =
new TreeWalker(this);
walker.traverse(node);
}
catch (org.xml.sax.SAXException se)
{
throw new WrappedRuntimeException(se);
}
}
/**
* Taken from XSLTC
*/
protected boolean m_escaping = true;
/**
* Flush the formatter's result stream.
*
* @throws org.xml.sax.SAXException
*/
protected final void flushWriter() throws org.xml.sax.SAXException
{
final java.io.Writer writer = m_writer;
if (null != writer)
{
try
{
if (writer instanceof WriterToUTF8Buffered)
{
if (m_shouldFlush)
((WriterToUTF8Buffered) writer).flush();
else
((WriterToUTF8Buffered) writer).flushBuffer();
}
if (writer instanceof WriterToASCI)
{
if (m_shouldFlush)
writer.flush();
}
else
{
// Flush always.
// Not a great thing if the writer was created
// by this class, but don't have a choice.
writer.flush();
}
}
catch (IOException ioe)
{
throw new org.xml.sax.SAXException(ioe);
}
}
}
OutputStream m_outputStream;
/**
* Get the output stream where the events will be serialized to.
*
* @return reference to the result stream, or null of only a writer was
* set.
*/
public OutputStream getOutputStream()
{
return m_outputStream;
}
// Implement DeclHandler
/**
* Report an element type declaration.
*
* <p>The content model will consist of the string "EMPTY", the
* string "ANY", or a parenthesised group, optionally followed
* by an occurrence indicator. The model will be normalized so
* that all whitespace is removed,and will include the enclosing
* parentheses.</p>
*
* @param name The element type name.
* @param model The content model as a normalized string.
* @exception SAXException The application may raise an exception.
*/
public void elementDecl(String name, String model) throws SAXException
{
// Do not inline external DTD
if (m_inExternalDTD)
return;
try
{
final java.io.Writer writer = m_writer;
DTDprolog();
writer.write("<!ELEMENT ");
writer.write(name);
writer.write(' ');
writer.write(model);
writer.write('>');
writer.write(m_lineSep, 0, m_lineSepLen);
}
catch (IOException e)
{
throw new SAXException(e);
}
}
/**
* Report an internal entity declaration.
*
* <p>Only the effective (first) declaration for each entity
* will be reported.</p>
*
* @param name The name of the entity. If it is a parameter
* entity, the name will begin with '%'.
* @param value The replacement text of the entity.
* @exception SAXException The application may raise an exception.
* @see #externalEntityDecl
* @see org.xml.sax.DTDHandler#unparsedEntityDecl
*/
public void internalEntityDecl(String name, String value)
throws SAXException
{
// Do not inline external DTD
if (m_inExternalDTD)
return;
try
{
DTDprolog();
outputEntityDecl(name, value);
}
catch (IOException e)
{
throw new SAXException(e);
}
}
/**
* Output the doc type declaration.
*
* @param name non-null reference to document type name.
* NEEDSDOC @param value
*
* @throws org.xml.sax.SAXException
*/
void outputEntityDecl(String name, String value) throws IOException
{
final java.io.Writer writer = m_writer;
writer.write("<!ENTITY ");
writer.write(name);
writer.write(" \"");
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);
}
void setProp(String name, String val, boolean defaultVal) {
if (val != null) {
char first = getFirstCharLocName(name);
switch (first) {
case 'c':
if (OutputKeys.CDATA_SECTION_ELEMENTS.equals(name)) {
String cdataSectionNames = val;
addCdataSectionElements(cdataSectionNames);
}
break;
case 'd':
if (OutputKeys.DOCTYPE_SYSTEM.equals(name)) {
this.m_doctypeSystem = val;
} else if (OutputKeys.DOCTYPE_PUBLIC.equals(name)) {
this.m_doctypePublic = val;
if (val.startsWith("-//W3C//DTD XHTML"))
m_spaceBeforeClose = true;
}
break;
case 'e':
String newEncoding = val;
if (OutputKeys.ENCODING.equals(name)) {
String possible_encoding = Encodings.getMimeEncoding(val);
if (possible_encoding != null) {
// if the encoding is being set, try to get the
// preferred
// mime-name and set it too.
super.setProp("mime-name", possible_encoding,
defaultVal);
}
final String oldExplicitEncoding = getOutputPropertyNonDefault(OutputKeys.ENCODING);
final String oldDefaultEncoding = getOutputPropertyDefault(OutputKeys.ENCODING);
if ( (defaultVal && ( oldDefaultEncoding == null || !oldDefaultEncoding.equalsIgnoreCase(newEncoding)))
|| ( !defaultVal && (oldExplicitEncoding == null || !oldExplicitEncoding.equalsIgnoreCase(newEncoding) ))) {
// We are trying to change the default or the non-default setting of the encoding to a different value
// from what it was
EncodingInfo encodingInfo = Encodings.getEncodingInfo(newEncoding);
if (newEncoding != null && encodingInfo.name == null) {
// We tried to get an EncodingInfo for Object for the given
// encoding, but it came back with an internall null name
// so the encoding is not supported by the JDK, issue a message.
final String msg = Utils.messages.createMessage(
MsgKey.ER_ENCODING_NOT_SUPPORTED,new Object[]{ newEncoding });
final String msg2 =
"Warning: encoding \"" + newEncoding + "\" not supported, using "
+ Encodings.DEFAULT_MIME_ENCODING;
try {
// Prepare to issue the warning message
final Transformer tran = super.getTransformer();
if (tran != null) {
final ErrorListener errHandler = tran
.getErrorListener();
// Issue the warning message
if (null != errHandler
&& m_sourceLocator != null) {
errHandler
.warning(new TransformerException(
msg, m_sourceLocator));
errHandler
.warning(new TransformerException(
msg2, m_sourceLocator));
} else {
System.out.println(msg);
System.out.println(msg2);
}
} else {
System.out.println(msg);
System.out.println(msg2);
}
} catch (Exception e) {
}
// We said we are using UTF-8, so use it
newEncoding = Encodings.DEFAULT_MIME_ENCODING;
val = Encodings.DEFAULT_MIME_ENCODING; // to store the modified value into the properties a little later
encodingInfo = Encodings.getEncodingInfo(newEncoding);
}
// The encoding was good, or was forced to UTF-8 above
// If there is already a non-default set encoding and we
// are trying to set the default encoding, skip the this block
// as the non-default value is already the one to use.
if (defaultVal == false || oldExplicitEncoding == null) {
m_encodingInfo = encodingInfo;
if (newEncoding != null)
m_isUTF8 = newEncoding.equals(Encodings.DEFAULT_MIME_ENCODING);
// if there was a previously set OutputStream
OutputStream os = getOutputStream();
if (os != null) {
Writer w = getWriter();
// If the writer was previously set, but
// set by the user, or if the new encoding is the same
// as the old encoding, skip this block
String oldEncoding = getOutputProperty(OutputKeys.ENCODING);
if ((w == null || !m_writer_set_by_user)
&& !newEncoding.equalsIgnoreCase(oldEncoding)) {
// Make the change of encoding in our internal
// table, then call setOutputStreamInternal
// which will stomp on the old Writer (if any)
// with a new Writer with the new encoding.
super.setProp(name, val, defaultVal);
setOutputStreamInternal(os,false);
}
}
}
}
}
break;
case 'i':
if (OutputPropertiesFactory.S_KEY_INDENT_AMOUNT.equals(name)) {
setIndentAmount(Integer.parseInt(val));
} else if (OutputKeys.INDENT.equals(name)) {
boolean b = "yes".equals(val) ? true : false;
m_doIndent = b;
}
break;
case 'l':
if (OutputPropertiesFactory.S_KEY_LINE_SEPARATOR.equals(name)) {
m_lineSep = val.toCharArray();
m_lineSepLen = m_lineSep.length;
}
break;
case 'm':
if (OutputKeys.MEDIA_TYPE.equals(name)) {
m_mediatype = val;
}
break;
case 'o':
if (OutputKeys.OMIT_XML_DECLARATION.equals(name)) {
boolean b = "yes".equals(val) ? true : false;
this.m_shouldNotWriteXMLHeader = b;
}
break;
case 's':
// if standalone was explicitly specified
if (OutputKeys.STANDALONE.equals(name)) {
if (defaultVal) {
setStandaloneInternal(val);
} else {
m_standaloneWasSpecified = true;
setStandaloneInternal(val);
}
}
break;
case 'v':
if (OutputKeys.VERSION.equals(name)) {
m_version = val;
}
break;
default:
break;
}
super.setProp(name, val, defaultVal);
}
}
/**
* 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;
if (format != null)
{
// Set the default values first,
// and the non-default values after that,
// just in case there is some unexpected
// residual values left over from over-ridden default values
Enumeration propNames;
propNames = format.propertyNames();
while (propNames.hasMoreElements())
{
String key = (String) propNames.nextElement();
// Get the value, possibly a default value
String value = format.getProperty(key);
// Get the non-default value (if any).
String explicitValue = (String) format.get(key);
if (explicitValue == null && value != null) {
// This is a default value
this.setOutputPropertyDefault(key,value);
}
if (explicitValue != null) {
// This is an explicit non-default value
this.setOutputProperty(key,explicitValue);
}
}
}
// 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);
}
m_shouldFlush = shouldFlush;
}
/**
* Returns the output format for this serializer.
*
* @return The output format in use
*/
public Properties getOutputFormat() {
Properties def = new Properties();
{
Set s = getOutputPropDefaultKeys();
Iterator i = s.iterator();
while (i.hasNext()) {
String key = (String) i.next();
String val = getOutputPropertyDefault(key);
def.put(key, val);
}
}
Properties props = new Properties(def);
{
Set s = getOutputPropKeys();
Iterator i = s.iterator();
while (i.hasNext()) {
String key = (String) i.next();
String val = getOutputPropertyNonDefault(key);
if (val != null)
props.put(key, val);
}
}
return props;
}
/**
* 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)
{
setWriterInternal(writer, true);
}
private boolean m_writer_set_by_user;
private void setWriterInternal(Writer writer, boolean setByUser) {
m_writer_set_by_user = setByUser;
m_writer = writer;
// if we are tracing events we need to trace what
// characters are written to the output writer.
if (m_tracer != null) {
boolean noTracerYet = true;
Writer w2 = m_writer;
while (w2 instanceof WriterChain) {
if (w2 instanceof SerializerTraceWriter) {
noTracerYet = false;
break;
}
w2 = ((WriterChain)w2).getWriter();
}
if (noTracerYet)
m_writer = new SerializerTraceWriter(m_writer, m_tracer);
}
}
/**
* 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)
{
setOutputStreamInternal(output, true);
}
private void setOutputStreamInternal(OutputStream output, boolean setByUser)
{
m_outputStream = output;
String encoding = getOutputProperty(OutputKeys.ENCODING);
if (Encodings.DEFAULT_MIME_ENCODING.equalsIgnoreCase(encoding))
{
// We wrap the OutputStream with a writer, but
// not one set by the user
setWriterInternal(new WriterToUTF8Buffered(output), false);
} else if (
"WINDOWS-1250".equals(encoding)
|| "US-ASCII".equals(encoding)
|| "ASCII".equals(encoding))
{
setWriterInternal(new WriterToASCI(output), false);
} else if (encoding != null) {
Writer osw = null;
try
{
osw = Encodings.getWriter(output, encoding);
}
catch (UnsupportedEncodingException uee)
{
osw = null;
}
if (osw == null) {
System.out.println(
"Warning: encoding \""
+ encoding
+ "\" not supported"
+ ", using "
+ Encodings.DEFAULT_MIME_ENCODING);
encoding = Encodings.DEFAULT_MIME_ENCODING;
setEncoding(encoding);
try {
osw = Encodings.getWriter(output, encoding);
} catch (UnsupportedEncodingException e) {
// We can't really get here, UTF-8 is always supported
// This try-catch exists to make the compiler happy
e.printStackTrace();
}
}
setWriterInternal(osw,false);
}
else {
// don't have any encoding, but we have an OutputStream
Writer osw = new OutputStreamWriter(output);
setWriterInternal(osw,false);
}
}
/**
* @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
* none of these applies.
* @param value A string representing the attribute's default value,
* or null if there is none.
* @exception SAXException The application may raise an exception.
*/
public void attributeDecl(
String eName,
String aName,
String type,
String valueDefault,
String value)
throws SAXException
{
// Do not inline external DTD
if (m_inExternalDTD)
return;
try
{
final java.io.Writer writer = m_writer;
DTDprolog();
writer.write("<!ATTLIST ");
writer.write(eName);
writer.write(' ');
writer.write(aName);
writer.write(' ');
writer.write(type);
if (valueDefault != null)
{
writer.write(' ');
writer.write(valueDefault);
}
//writer.write(" ");
//writer.write(value);
writer.write('>');
writer.write(m_lineSep, 0, m_lineSepLen);
}
catch (IOException e)
{
throw new SAXException(e);
}
}
/**
* Get the character stream where the events will be serialized to.
*
* @return Reference to the result Writer, or null.
*/
public Writer getWriter()
{
return m_writer;
}
/**
* Report a parsed external entity declaration.
*
* <p>Only the effective (first) declaration for each entity
* will be reported.</p>
*
* @param name The name of the entity. If it is a parameter
* entity, the name will begin with '%'.
* @param publicId The declared public identifier of the entity, or
* null if none was declared.
* @param systemId The declared system identifier of the entity.
* @exception SAXException The application may raise an exception.
* @see #internalEntityDecl
* @see org.xml.sax.DTDHandler#unparsedEntityDecl
*/
public void externalEntityDecl(
String name,
String publicId,
String systemId)
throws SAXException
{
try {
DTDprolog();
m_writer.write("<!ENTITY ");
m_writer.write(name);
if (publicId != null) {
m_writer.write(" PUBLIC \"");
m_writer.write(publicId);
}
else {
m_writer.write(" SYSTEM \"");
m_writer.write(systemId);
}
m_writer.write("\" >");
m_writer.write(m_lineSep, 0, m_lineSepLen);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/**
* Tell if this character can be written without escaping.
*/
protected boolean escapingNotNeeded(char ch)
{
final boolean ret;
if (ch < 127)
{
// This is the old/fast code here, but is this
// correct for all encodings?
if (ch >= CharInfo.S_SPACE || (CharInfo.S_LINEFEED == ch ||
CharInfo.S_CARRIAGERETURN == ch || CharInfo.S_HORIZONAL_TAB == ch))
ret= true;
else
ret = false;
}
else {
ret = m_encodingInfo.isInEncoding(ch);
}
return ret;
}
/**
* Once a surrogate has been detected, write out the pair of
* characters if it is in the encoding, or if there is no
* encoding, otherwise write out an entity reference
* of the value of the unicode code point of the character
* represented by the high/low surrogate pair.
* <p>
* An exception is thrown if there is no low surrogate in the pair,
* because the array ends unexpectely, or if the low char is there
* but its value is such that it is not a low surrogate.
*
* @param c the first (high) part of the surrogate, which
* must be confirmed before calling this method.
* @param ch Character array.
* @param i position Where the surrogate was detected.
* @param end The end index of the significant characters.
* @return 0 if the pair of characters was written out as-is,
* the unicode code point of the character represented by
* the surrogate pair if an entity reference with that value
* was written out.
*
* @throws IOException
* @throws org.xml.sax.SAXException if invalid UTF-16 surrogate detected.
*/
protected int writeUTF16Surrogate(char c, char ch[], int i, int end)
throws IOException
{
int codePoint = 0;
if (i + 1 >= end)
{
throw new IOException(
Utils.messages.createMessage(
MsgKey.ER_INVALID_UTF16_SURROGATE,
new Object[] { Integer.toHexString((int) c)}));
}
final char high = c;
final char low = ch[i+1];
if (!Encodings.isLowUTF16Surrogate(low)) {
throw new IOException(
Utils.messages.createMessage(
MsgKey.ER_INVALID_UTF16_SURROGATE,
new Object[] {
Integer.toHexString((int) c)
+ " "
+ Integer.toHexString(low)}));
}
final java.io.Writer writer = m_writer;
// If we make it to here we have a valid high, low surrogate pair
if (m_encodingInfo.isInEncoding(c,low)) {
// If the character formed by the surrogate pair
// is in the encoding, so just write it out
writer.write(ch,i,2);
}
else {
// Don't know what to do with this char, it is
// not in the encoding and not a high char in
// a surrogate pair, so write out as an entity ref
final String encoding = getEncoding();
if (encoding != null) {
/* The output encoding is known,
* so somthing is wrong.
*/
codePoint = Encodings.toCodePoint(high, low);
// not in the encoding, so write out a character reference
writer.write('&');
writer.write('#');
writer.write(Integer.toString(codePoint));
writer.write(';');
} else {
/* The output encoding is not known,
* so just write it out as-is.
*/
writer.write(ch, i, 2);
}
}
// non-zero only if character reference was written out.
return codePoint;
}
/**
* Handle one of the default entities, return false if it
* is not a default entity.
*
* @param ch character to be escaped.
* @param i index into character array.
* @param chars non-null reference to character array.
* @param len length of chars.
* @param fromTextNode true if the characters being processed
* are from a text node, false if they are from an attribute value
* @param escLF true if the linefeed should be escaped.
*
* @return i+1 if the character was written, else i.
*
* @throws java.io.IOException
*/
int accumDefaultEntity(
java.io.Writer writer,
char ch,
int i,
char[] chars,
int len,
boolean fromTextNode,
boolean escLF)
throws IOException
{
if (!escLF && CharInfo.S_LINEFEED == ch)
{
writer.write(m_lineSep, 0, m_lineSepLen);
}
else
{
// if this is text node character and a special one of those,
// or if this is a character from attribute value and a special one of those
if ((fromTextNode && m_charInfo.shouldMapTextChar(ch)) || (!fromTextNode && m_charInfo.shouldMapAttrChar(ch)))
{
String outputStringForChar = m_charInfo.getOutputStringForChar(ch);
if (null != outputStringForChar)
{
writer.write(outputStringForChar);
}
else
return i;
}
else
return i;
}
return i + 1;
}
/**
* Normalize the characters, but don't escape.
*
* @param ch The characters from the XML document.
* @param start The start position in the array.
* @param length The number of characters to read from the array.
* @param isCData true if a CDATA block should be built around the characters.
* @param useSystemLineSeparator true if the operating systems
* end-of-line separator should be output rather than a new-line character.
*
* @throws IOException
* @throws org.xml.sax.SAXException
*/
void writeNormalizedChars(
char ch[],
int start,
int length,
boolean isCData,
boolean useSystemLineSeparator)
throws IOException, org.xml.sax.SAXException
{
final java.io.Writer writer = m_writer;
int end = start + length;
for (int i = start; i < end; i++)
{
char c = ch[i];
if (CharInfo.S_LINEFEED == c && useSystemLineSeparator)
{
writer.write(m_lineSep, 0, m_lineSepLen);
}
else if (isCData && (!escapingNotNeeded(c)))
{
// if (i != 0)
if (m_cdataTagOpen)
closeCDATA();
// This needs to go into a function...
if (Encodings.isHighUTF16Surrogate(c))
{
writeUTF16Surrogate(c, ch, i, end);
i++ ; // process two input characters
}
else
{
writer.write("&#");
String intStr = Integer.toString((int) c);
writer.write(intStr);
writer.write(';');
}
// if ((i != 0) && (i < (end - 1)))
// if (!m_cdataTagOpen && (i < (end - 1)))
// {
// writer.write(CDATA_DELIMITER_OPEN);
// m_cdataTagOpen = true;
// }
}
else if (
isCData
&& ((i < (end - 2))
&& (']' == c)
&& (']' == ch[i + 1])
&& ('>' == ch[i + 2])))
{
writer.write(CDATA_CONTINUE);
i += 2;
}
else
{
if (escapingNotNeeded(c))
{
if (isCData && !m_cdataTagOpen)
{
writer.write(CDATA_DELIMITER_OPEN);
m_cdataTagOpen = true;
}
writer.write(c);
}
// This needs to go into a function...
else if (Encodings.isHighUTF16Surrogate(c))
{
if (m_cdataTagOpen)
closeCDATA();
writeUTF16Surrogate(c, ch, i, end);
i++; // process two input characters
}
else
{
if (m_cdataTagOpen)
closeCDATA();
writer.write("&#");
String intStr = Integer.toString((int) c);
writer.write(intStr);
writer.write(';');
}
}
}
}
/**
* Ends an un-escaping section.
*
* @see #startNonEscaping
*
* @throws org.xml.sax.SAXException
*/
public void endNonEscaping() throws org.xml.sax.SAXException
{
m_disableOutputEscapingStates.pop();
}
/**
* Starts an un-escaping section. All characters printed within an un-
* escaping section are printed as is, without escaping special characters
* into entity references. Only XML and HTML serializers need to support
* this method.
* <p> The contents of the un-escaping section will be delivered through the
* regular <tt>characters</tt> event.
*
* @throws org.xml.sax.SAXException
*/
public void startNonEscaping() throws org.xml.sax.SAXException
{
m_disableOutputEscapingStates.push(true);
}
/**
* Receive notification of cdata.
*
* <p>The Parser will call this method to report each chunk of
* character data. SAX parsers may return all contiguous character
* data in a single chunk, or they may split it into several
* chunks; however, all of the characters in any single event
* must come from the same external entity, so that the Locator
* provides useful information.</p>
*
* <p>The application must not attempt to read from the array
* outside of the specified range.</p>
*
* <p>Note that some parsers will report whitespace using the
* ignorableWhitespace() method rather than this one (validating
* parsers must do so).</p>
*
* @param ch The characters from the XML document.
* @param start The start position in the array.
* @param length The number of characters to read from the array.
* @throws org.xml.sax.SAXException Any SAX exception, possibly
* wrapping another exception.
* @see #ignorableWhitespace
* @see org.xml.sax.Locator
*
* @throws org.xml.sax.SAXException
*/
protected void cdata(char ch[], int start, final int length)
throws org.xml.sax.SAXException
{
try
{
final int old_start = start;
if (m_elemContext.m_startTagOpen)
{
closeStartTag();
m_elemContext.m_startTagOpen = false;
}
m_ispreserve = true;
if (shouldIndent())
indent();
boolean writeCDataBrackets =
(((length >= 1) && escapingNotNeeded(ch[start])));
/* Write out the CDATA opening delimiter only if
* we are supposed to, and if we are not already in
* the middle of a CDATA section
*/
if (writeCDataBrackets && !m_cdataTagOpen)
{
m_writer.write(CDATA_DELIMITER_OPEN);
m_cdataTagOpen = true;
}
// writer.write(ch, start, length);
if (isEscapingDisabled())
{
charactersRaw(ch, start, length);
}
else
writeNormalizedChars(ch, start, length, true, m_lineSepUse);
/* used to always write out CDATA closing delimiter here,
* but now we delay, so that we can merge CDATA sections on output.
* need to write closing delimiter later
*/
if (writeCDataBrackets)
{
/* if the CDATA section ends with ] don't leave it open
* as there is a chance that an adjacent CDATA sections
* starts with ]>.
* We don't want to merge ]] with > , or ] with ]>
*/
if (ch[start + length - 1] == ']')
closeCDATA();
}
// time to fire off CDATA event
if (m_tracer != null)
super.fireCDATAEvent(ch, old_start, length);
}
catch (IOException ioe)
{
throw new org.xml.sax.SAXException(
Utils.messages.createMessage(
MsgKey.ER_OIERROR,
null),
ioe);
//"IO error", ioe);
}
}
/**
* Tell if the character escaping should be disabled for the current state.
*
* @return true if the character escaping should be disabled.
*/
private boolean isEscapingDisabled()
{
return m_disableOutputEscapingStates.peekOrFalse();
}
/**
* If available, when the disable-output-escaping attribute is used,
* output raw text without escaping.
*
* @param ch The characters from the XML document.
* @param start The start position in the array.
* @param length The number of characters to read from the array.
*
* @throws org.xml.sax.SAXException
*/
protected void charactersRaw(char ch[], int start, int length)
throws org.xml.sax.SAXException
{
if (m_inEntityRef)
return;
try
{
if (m_elemContext.m_startTagOpen)
{
closeStartTag();
m_elemContext.m_startTagOpen = false;
}
m_ispreserve = true;
m_writer.write(ch, start, length);
}
catch (IOException e)
{
throw new SAXException(e);
}
}
/**
* Receive notification of character data.
*
* <p>The Parser will call this method to report each chunk of
* character data. SAX parsers may return all contiguous character
* data in a single chunk, or they may split it into several
* chunks; however, all of the characters in any single event
* must come from the same external entity, so that the Locator
* provides useful information.</p>
*
* <p>The application must not attempt to read from the array
* outside of the specified range.</p>
*
* <p>Note that some parsers will report whitespace using the
* ignorableWhitespace() method rather than this one (validating
* parsers must do so).</p>
*
* @param chars The characters from the XML document.
* @param start The start position in the array.
* @param length The number of characters to read from the array.
* @throws org.xml.sax.SAXException Any SAX exception, possibly
* wrapping another exception.
* @see #ignorableWhitespace
* @see org.xml.sax.Locator
*
* @throws org.xml.sax.SAXException
*/
public void characters(final char chars[], final int start, final int length)
throws org.xml.sax.SAXException
{
// It does not make sense to continue with rest of the method if the number of
// characters to read from array is 0.
// Section 7.6.1 of XSLT 1.0 (http://www.w3.org/TR/xslt#value-of) suggest no text node
// is created if string is empty.
if (length == 0 || (m_inEntityRef && !m_expandDTDEntities))
return;
m_docIsEmpty = false;
if (m_elemContext.m_startTagOpen)
{
closeStartTag();
m_elemContext.m_startTagOpen = false;
}
else if (m_needToCallStartDocument)
{
startDocumentInternal();
}
if (m_cdataStartCalled || m_elemContext.m_isCdataSection)
{
/* either due to startCDATA() being called or due to
* cdata-section-elements atribute, we need this as cdata
*/
cdata(chars, start, length);
return;
}
if (m_cdataTagOpen)
closeCDATA();
if (m_disableOutputEscapingStates.peekOrFalse() || (!m_escaping))
{
charactersRaw(chars, start, length);
// time to fire off characters generation event
if (m_tracer != null)
super.fireCharEvent(chars, start, length);
return;
}
if (m_elemContext.m_startTagOpen)
{
closeStartTag();
m_elemContext.m_startTagOpen = false;
}
try
{
int i;
int startClean;
// skip any leading whitspace
// don't go off the end and use a hand inlined version
// of isWhitespace(ch)
final int end = start + length;
int lastDirtyCharProcessed = start - 1; // last non-clean character that was processed
// that was processed
final Writer writer = m_writer;
boolean isAllWhitespace = true;
// process any leading whitspace
i = start;
while (i < end && isAllWhitespace) {
char ch1 = chars[i];
if (m_charInfo.shouldMapTextChar(ch1)) {
// The character is supposed to be replaced by a String
// so write out the clean whitespace characters accumulated
// so far
// then the String.
writeOutCleanChars(chars, i, lastDirtyCharProcessed);
String outputStringForChar = m_charInfo
.getOutputStringForChar(ch1);
writer.write(outputStringForChar);
// We can't say that everything we are writing out is
// all whitespace, we just wrote out a String.
isAllWhitespace = false;
lastDirtyCharProcessed = i; // mark the last non-clean
// character processed
i++;
} else {
// The character is clean, but is it a whitespace ?
switch (ch1) {
// TODO: Any other whitespace to consider?
case CharInfo.S_SPACE:
// Just accumulate the clean whitespace
i++;
break;
case CharInfo.S_LINEFEED:
lastDirtyCharProcessed = processLineFeed(chars, i,
lastDirtyCharProcessed, writer);
i++;
break;
case CharInfo.S_CARRIAGERETURN:
writeOutCleanChars(chars, i, lastDirtyCharProcessed);
writer.write("&#13;");
lastDirtyCharProcessed = i;
i++;
break;
case CharInfo.S_HORIZONAL_TAB:
// Just accumulate the clean whitespace
i++;
break;
default:
// The character was clean, but not a whitespace
// so break the loop to continue with this character
// (we don't increment index i !!)
isAllWhitespace = false;
break;
}
}
}
/* If there is some non-whitespace, mark that we may need
* to preserve this. This is only important if we have indentation on.
*/
if (i < end || !isAllWhitespace)
m_ispreserve = true;
for (; i < end; i++)
{
char ch = chars[i];
if (m_charInfo.shouldMapTextChar(ch)) {
// The character is supposed to be replaced by a String
// e.g. '&' --> "&amp;"
// e.g. '<' --> "&lt;"
writeOutCleanChars(chars, i, lastDirtyCharProcessed);
String outputStringForChar = m_charInfo.getOutputStringForChar(ch);
writer.write(outputStringForChar);
lastDirtyCharProcessed = i;
}
else {
if (ch <= 0x1F) {
// Range 0x00 through 0x1F inclusive
//
// This covers the non-whitespace control characters
// in the range 0x1 to 0x1F inclusive.
// It also covers the whitespace control characters in the same way:
// 0x9 TAB
// 0xA NEW LINE
// 0xD CARRIAGE RETURN
//
// We also cover 0x0 ... It isn't valid
// but we will output "&#0;"
// The default will handle this just fine, but this
// is a little performance boost to handle the more
// common TAB, NEW-LINE, CARRIAGE-RETURN
switch (ch) {
case CharInfo.S_HORIZONAL_TAB:
// Leave whitespace TAB as a real character
break;
case CharInfo.S_LINEFEED:
lastDirtyCharProcessed = processLineFeed(chars, i, lastDirtyCharProcessed, writer);
break;
case CharInfo.S_CARRIAGERETURN:
writeOutCleanChars(chars, i, lastDirtyCharProcessed);
writer.write("&#13;");
lastDirtyCharProcessed = i;
// Leave whitespace carriage return as a real character
break;
default:
writeOutCleanChars(chars, i, lastDirtyCharProcessed);
writer.write("&#");
writer.write(Integer.toString(ch));
writer.write(';');
lastDirtyCharProcessed = i;
break;
}
}
else if (ch < 0x7F) {
// Range 0x20 through 0x7E inclusive
// Normal ASCII chars, do nothing, just add it to
// the clean characters
}
else if (ch <= 0x9F){
// Range 0x7F through 0x9F inclusive
// More control characters, including NEL (0x85)
writeOutCleanChars(chars, i, lastDirtyCharProcessed);
writer.write("&#");
writer.write(Integer.toString(ch));
writer.write(';');
lastDirtyCharProcessed = i;
}
else if (ch == CharInfo.S_LINE_SEPARATOR) {
// LINE SEPARATOR
writeOutCleanChars(chars, i, lastDirtyCharProcessed);
writer.write("&#8232;");
lastDirtyCharProcessed = i;
}
else if (m_encodingInfo.isInEncoding(ch)) {
// If the character is in the encoding, and
// not in the normal ASCII range, we also
// just leave it get added on to the clean characters
}
else {
// This is a fallback plan, we should never get here
// but if the character wasn't previously handled
// (i.e. isn't in the encoding, etc.) then what
// should we do? We choose to write out an entity
writeOutCleanChars(chars, i, lastDirtyCharProcessed);
writer.write("&#");
writer.write(Integer.toString(ch));
writer.write(';');
lastDirtyCharProcessed = i;
}
}
}
// we've reached the end. Any clean characters at the
// end of the array than need to be written out?
startClean = lastDirtyCharProcessed + 1;
if (i > startClean)
{
int lengthClean = i - startClean;
m_writer.write(chars, startClean, lengthClean);
}
// For indentation purposes, mark that we've just writen text out
m_isprevtext = true;
}
catch (IOException e)
{
throw new SAXException(e);
}
// time to fire off characters generation event
if (m_tracer != null)
super.fireCharEvent(chars, start, length);
}
private int processLineFeed(final char[] chars, int i, int lastProcessed, final Writer writer) throws IOException {
if (!m_lineSepUse
|| (m_lineSepLen ==1 && m_lineSep[0] == CharInfo.S_LINEFEED)){
// We are leaving the new-line alone, and it is just
// being added to the 'clean' characters,
// so the last dirty character processed remains unchanged
}
else {
writeOutCleanChars(chars, i, lastProcessed);
writer.write(m_lineSep, 0, m_lineSepLen);
lastProcessed = i;
}
return lastProcessed;
}
private void writeOutCleanChars(final char[] chars, int i, int lastProcessed) throws IOException {
int startClean;
startClean = lastProcessed + 1;
if (startClean < i)
{
int lengthClean = i - startClean;
m_writer.write(chars, startClean, lengthClean);
}
}
/**
* This method checks if a given character is between C0 or C1 range
* of Control characters.
* This method is added to support Control Characters for XML 1.1
* If a given character is TAB (0x09), LF (0x0A) or CR (0x0D), this method
* return false. Since they are whitespace characters, no special processing is needed.
*
* @param ch
* @return boolean
*/
private static boolean isCharacterInC0orC1Range(char ch)
{
if(ch == 0x09 || ch == 0x0A || ch == 0x0D)
return false;
else
return (ch >= 0x7F && ch <= 0x9F)|| (ch >= 0x01 && ch <= 0x1F);
}
/**
* This method checks if a given character either NEL (0x85) or LSEP (0x2028)
* These are new end of line charcters added in XML 1.1. These characters must be
* written as Numeric Character References (NCR) in XML 1.1 output document.
*
* @param ch
* @return boolean
*/
private static boolean isNELorLSEPCharacter(char ch)
{
return (ch == 0x85 || ch == 0x2028);
}
/**
* Process a dirty character and any preeceding clean characters
* that were not yet processed.
* @param chars array of characters being processed
* @param end one (1) beyond the last character
* in chars to be processed
* @param i the index of the dirty character
* @param ch the character in chars[i]
* @param lastDirty the last dirty character previous to i
* @param fromTextNode true if the characters being processed are
* from a text node, false if they are from an attribute value.
* @return the index of the last character processed
*/
private int processDirty(
char[] chars,
int end,
int i,
char ch,
int lastDirty,
boolean fromTextNode) throws IOException
{
int startClean = lastDirty + 1;
// if we have some clean characters accumulated
// process them before the dirty one.
if (i > startClean)
{
int lengthClean = i - startClean;
m_writer.write(chars, startClean, lengthClean);
}
// process the "dirty" character
if (CharInfo.S_LINEFEED == ch && fromTextNode)
{
m_writer.write(m_lineSep, 0, m_lineSepLen);
}
else
{
startClean =
accumDefaultEscape(
m_writer,
(char)ch,
i,
chars,
end,
fromTextNode,
false);
i = startClean - 1;
}
// Return the index of the last character that we just processed
// which is a dirty character.
return i;
}
/**
* Receive notification of character data.
*
* @param s The string of characters to process.
*
* @throws org.xml.sax.SAXException
*/
public void characters(String s) throws org.xml.sax.SAXException
{
if (m_inEntityRef && !m_expandDTDEntities)
return;
final int length = s.length();
if (length > m_charsBuff.length)
{
m_charsBuff = new char[length * 2 + 1];
}
s.getChars(0, length, m_charsBuff, 0);
characters(m_charsBuff, 0, length);
}
/**
* Escape and writer.write a character.
*
* @param ch character to be escaped.
* @param i index into character array.
* @param chars non-null reference to character array.
* @param len length of chars.
* @param fromTextNode true if the characters being processed are
* from a text node, false if the characters being processed are from
* an attribute value.
* @param escLF true if the linefeed should be escaped.
*
* @return i+1 if a character was written, i+2 if two characters
* were written out, else return i.
*
* @throws org.xml.sax.SAXException
*/
private int accumDefaultEscape(
Writer writer,
char ch,
int i,
char[] chars,
int len,
boolean fromTextNode,
boolean escLF)
throws IOException
{
int pos = accumDefaultEntity(writer, ch, i, chars, len, fromTextNode, escLF);
if (i == pos)
{
if (Encodings.isHighUTF16Surrogate(ch))
{
// Should be the UTF-16 low surrogate of the hig/low pair.
char next;
// Unicode code point formed from the high/low pair.
int codePoint = 0;
if (i + 1 >= len)
{
throw new IOException(
Utils.messages.createMessage(
MsgKey.ER_INVALID_UTF16_SURROGATE,
new Object[] { Integer.toHexString(ch)}));
//"Invalid UTF-16 surrogate detected: "
//+Integer.toHexString(ch)+ " ?");
}
else
{
next = chars[++i];
if (!(Encodings.isLowUTF16Surrogate(next)))
throw new IOException(
Utils.messages.createMessage(
MsgKey
.ER_INVALID_UTF16_SURROGATE,
new Object[] {
Integer.toHexString(ch)
+ " "
+ Integer.toHexString(next)}));
//"Invalid UTF-16 surrogate detected: "
//+Integer.toHexString(ch)+" "+Integer.toHexString(next));
codePoint = Encodings.toCodePoint(ch,next);
}
writer.write("&#");
writer.write(Integer.toString(codePoint));
writer.write(';');
pos += 2; // count the two characters that went into writing out this entity
}
else
{
/* This if check is added to support control characters in XML 1.1.
* If a character is a Control Character within C0 and C1 range, it is desirable
* to write it out as Numeric Character Reference(NCR) regardless of XML Version
* being used for output document.
*/
if (isCharacterInC0orC1Range(ch) || isNELorLSEPCharacter(ch))
{
writer.write("&#");
writer.write(Integer.toString(ch));
writer.write(';');
}
else if ((!escapingNotNeeded(ch) ||
( (fromTextNode && m_charInfo.shouldMapTextChar(ch))
|| (!fromTextNode && m_charInfo.shouldMapAttrChar(ch))))
&& m_elemContext.m_currentElemDepth > 0)
{
writer.write("&#");
writer.write(Integer.toString(ch));
writer.write(';');
}
else
{
writer.write(ch);
}
pos++; // count the single character that was processed
}
}
return pos;
}
/**
* Receive notification of the beginning of an element, although this is a
* SAX method additional namespace or attribute information can occur before
* or after this call, that is associated with this element.
*
*
* @param namespaceURI The Namespace URI, or the empty string if the
* element has no Namespace URI or if Namespace
* processing is not being performed.
* @param localName The local name (without prefix), or the
* empty string if Namespace processing is not being
* performed.
* @param name The element type name.
* @param atts The attributes attached to the element, if any.
* @throws org.xml.sax.SAXException Any SAX exception, possibly
* wrapping another exception.
* @see org.xml.sax.ContentHandler#startElement
* @see org.xml.sax.ContentHandler#endElement
* @see org.xml.sax.AttributeList
*
* @throws org.xml.sax.SAXException
*/
public void startElement(
String namespaceURI,
String localName,
String name,
Attributes atts)
throws org.xml.sax.SAXException
{
if (m_inEntityRef)
return;
if (m_needToCallStartDocument)
{
startDocumentInternal();
m_needToCallStartDocument = false;
m_docIsEmpty = false;
}
else if (m_cdataTagOpen)
closeCDATA();
try
{
if (m_needToOutputDocTypeDecl) {
if(null != getDoctypeSystem()) {
outputDocTypeDecl(name, true);
}
m_needToOutputDocTypeDecl = false;
}
/* before we over-write the current elementLocalName etc.
* lets close out the old one (if we still need to)
*/
if (m_elemContext.m_startTagOpen)
{
closeStartTag();
m_elemContext.m_startTagOpen = false;
}
if (namespaceURI != null)
ensurePrefixIsDeclared(namespaceURI, name);
m_ispreserve = false;
if (shouldIndent() && m_startNewLine)
{
indent();
}
m_startNewLine = true;
final java.io.Writer writer = m_writer;
writer.write('<');
writer.write(name);
}
catch (IOException e)
{
throw new SAXException(e);
}
// process the attributes now, because after this SAX call they might be gone
if (atts != null)
addAttributes(atts);
m_elemContext = m_elemContext.push(namespaceURI,localName,name);
m_isprevtext = false;
if (m_tracer != null)
firePseudoAttributes();
}
/**
* Receive notification of the beginning of an element, additional
* namespace or attribute information can occur before or after this call,
* that is associated with this element.
*
*
* @param elementNamespaceURI The Namespace URI, or the empty string if the
* element has no Namespace URI or if Namespace
* processing is not being performed.
* @param elementLocalName The local name (without prefix), or the
* empty string if Namespace processing is not being
* performed.
* @param elementName The element type name.
* @throws org.xml.sax.SAXException Any SAX exception, possibly
* wrapping another exception.
* @see org.xml.sax.ContentHandler#startElement
* @see org.xml.sax.ContentHandler#endElement
* @see org.xml.sax.AttributeList
*
* @throws org.xml.sax.SAXException
*/
public void startElement(
String elementNamespaceURI,
String elementLocalName,
String elementName)
throws SAXException
{
startElement(elementNamespaceURI, elementLocalName, elementName, null);
}
public void startElement(String elementName) throws SAXException
{
startElement(null, null, elementName, null);
}
/**
* Output the doc type declaration.
*
* @param name non-null reference to document type name.
* NEEDSDOC @param closeDecl
*
* @throws java.io.IOException
*/
void outputDocTypeDecl(String name, boolean closeDecl) throws SAXException
{
if (m_cdataTagOpen)
closeCDATA();
try
{
final java.io.Writer writer = m_writer;
writer.write("<!DOCTYPE ");
writer.write(name);
String doctypePublic = getDoctypePublic();
if (null != doctypePublic)
{
writer.write(" PUBLIC \"");
writer.write(doctypePublic);
writer.write('\"');
}
String doctypeSystem = getDoctypeSystem();
if (null != doctypeSystem)
{
if (null == doctypePublic)
writer.write(" SYSTEM \"");
else
writer.write(" \"");
writer.write(doctypeSystem);
if (closeDecl)
{
writer.write("\">");
writer.write(m_lineSep, 0, m_lineSepLen);
closeDecl = false; // done closing
}
else
writer.write('\"');
}
}
catch (IOException e)
{
throw new SAXException(e);
}
}
/**
* Process the attributes, which means to write out the currently
* collected attributes to the writer. The attributes are not
* cleared by this method
*
* @param writer the writer to write processed attributes to.
* @param nAttrs the number of attributes in m_attributes
* to be processed
*
* @throws java.io.IOException
* @throws org.xml.sax.SAXException
*/
public void processAttributes(java.io.Writer writer, int nAttrs) throws IOException, SAXException
{
/* real SAX attributes are not passed in, so process the
* attributes that were collected after the startElement call.
* _attribVector is a "cheap" list for Stream serializer output
* accumulated over a series of calls to attribute(name,value)
*/
String encoding = getEncoding();
for (int i = 0; i < nAttrs; i++)
{
// elementAt is JDK 1.1.8
final String name = m_attributes.getQName(i);
final String value = m_attributes.getValue(i);
writer.write(' ');
writer.write(name);
writer.write("=\"");
writeAttrString(writer, value, encoding);
writer.write('\"');
}
}
/**
* Returns the specified <var>string</var> after substituting <VAR>specials</VAR>,
* and UTF-16 surrogates for chracter references <CODE>&amp;#xnn</CODE>.
*
* @param string String to convert to XML format.
* @param encoding CURRENTLY NOT IMPLEMENTED.
*
* @throws java.io.IOException
*/
public void writeAttrString(
Writer writer,
String string,
String encoding)
throws IOException
{
final int len = string.length();
if (len > m_attrBuff.length)
{
m_attrBuff = new char[len*2 + 1];
}
string.getChars(0,len, m_attrBuff, 0);
final char[] stringChars = m_attrBuff;
for (int i = 0; i < len; i++)
{
char ch = stringChars[i];
if (m_charInfo.shouldMapAttrChar(ch)) {
// The character is supposed to be replaced by a String
// e.g. '&' --> "&amp;"
// e.g. '<' --> "&lt;"
accumDefaultEscape(writer, ch, i, stringChars, len, false, true);
}
else {
if (0x0 <= ch && ch <= 0x1F) {
// Range 0x00 through 0x1F inclusive
// This covers the non-whitespace control characters
// in the range 0x1 to 0x1F inclusive.
// It also covers the whitespace control characters in the same way:
// 0x9 TAB
// 0xA NEW LINE
// 0xD CARRIAGE RETURN
//
// We also cover 0x0 ... It isn't valid
// but we will output "&#0;"
// The default will handle this just fine, but this
// is a little performance boost to handle the more
// common TAB, NEW-LINE, CARRIAGE-RETURN
switch (ch) {
case CharInfo.S_HORIZONAL_TAB:
writer.write("&#9;");
break;
case CharInfo.S_LINEFEED:
writer.write("&#10;");
break;
case CharInfo.S_CARRIAGERETURN:
writer.write("&#13;");
break;
default:
writer.write("&#");
writer.write(Integer.toString(ch));
writer.write(';');
break;
}
}
else if (ch < 0x7F) {
// Range 0x20 through 0x7E inclusive
// Normal ASCII chars
writer.write(ch);
}
else if (ch <= 0x9F){
// Range 0x7F through 0x9F inclusive
// More control characters
writer.write("&#");
writer.write(Integer.toString(ch));
writer.write(';');
}
else if (ch == CharInfo.S_LINE_SEPARATOR) {
// LINE SEPARATOR
writer.write("&#8232;");
}
else if (m_encodingInfo.isInEncoding(ch)) {
// If the character is in the encoding, and
// not in the normal ASCII range, we also
// just write it out
writer.write(ch);
}
else {
// This is a fallback plan, we should never get here
// but if the character wasn't previously handled
// (i.e. isn't in the encoding, etc.) then what
// should we do? We choose to write out a character ref
writer.write("&#");
writer.write(Integer.toString(ch));
writer.write(';');
}
}
}
}
/**
* Receive notification of the end of an element.
*
*
* @param namespaceURI The Namespace URI, or the empty string if the
* element has no Namespace URI or if Namespace
* processing is not being performed.
* @param localName The local name (without prefix), or the
* empty string if Namespace processing is not being
* performed.
* @param name The element type name
* @throws org.xml.sax.SAXException Any SAX exception, possibly
* wrapping another exception.
*
* @throws org.xml.sax.SAXException
*/
public void endElement(String namespaceURI, String localName, String name)
throws org.xml.sax.SAXException
{
if (m_inEntityRef)
return;
// namespaces declared at the current depth are no longer valid
// so get rid of them
m_prefixMap.popNamespaces(m_elemContext.m_currentElemDepth, null);
try
{
final java.io.Writer writer = m_writer;
if (m_elemContext.m_startTagOpen)
{
if (m_tracer != null)
super.fireStartElem(m_elemContext.m_elementName);
int nAttrs = m_attributes.getLength();
if (nAttrs > 0)
{
processAttributes(m_writer, nAttrs);
// clear attributes object for re-use with next element
m_attributes.clear();
}
if (m_spaceBeforeClose)
writer.write(" />");
else
writer.write("/>");
/* don't need to pop cdataSectionState because
* this element ended so quickly that we didn't get
* to push the state.
*/
}
else
{
if (m_cdataTagOpen)
closeCDATA();
if (shouldIndent())
indent(m_elemContext.m_currentElemDepth - 1);
writer.write('<');
writer.write('/');
writer.write(name);
writer.write('>');
}
}
catch (IOException e)
{
throw new SAXException(e);
}
if (!m_elemContext.m_startTagOpen && m_doIndent)
{
m_ispreserve = m_preserves.isEmpty() ? false : m_preserves.pop();
}
m_isprevtext = false;
// fire off the end element event
if (m_tracer != null)
super.fireEndElem(name);
m_elemContext = m_elemContext.m_prev;
}
/**
* Receive notification of the end of an element.
* @param name The element type name
* @throws org.xml.sax.SAXException Any SAX exception, possibly
* wrapping another exception.
*/
public void endElement(String name) throws org.xml.sax.SAXException
{
endElement(null, null, name);
}
/**
* Begin the scope of a prefix-URI Namespace mapping
* just before another element is about to start.
* This call will close any open tags so that the prefix mapping
* will not apply to the current element, but the up comming child.
*
* @see org.xml.sax.ContentHandler#startPrefixMapping
*
* @param prefix The Namespace prefix being declared.
* @param uri The Namespace URI the prefix is mapped to.
*
* @throws org.xml.sax.SAXException The client may throw
* an exception during processing.
*
*/
public void startPrefixMapping(String prefix, String uri)
throws org.xml.sax.SAXException
{
// the "true" causes the flush of any open tags
startPrefixMapping(prefix, uri, true);
}
/**
* Handle a prefix/uri mapping, which is associated with a startElement()
* that is soon to follow. Need to close any open start tag to make
* sure than any name space attributes due to this event are associated wih
* the up comming element, not the current one.
* @see ExtendedContentHandler#startPrefixMapping
*
* @param prefix The Namespace prefix being declared.
* @param uri The Namespace URI the prefix is mapped to.
* @param shouldFlush true if any open tags need to be closed first, this
* will impact which element the mapping applies to (open parent, or its up
* comming child)
* @return returns true if the call made a change to the current
* namespace information, false if it did not change anything, e.g. if the
* prefix/namespace mapping was already in scope from before.
*
* @throws org.xml.sax.SAXException The client may throw
* an exception during processing.
*
*
*/
public boolean startPrefixMapping(
String prefix,
String uri,
boolean shouldFlush)
throws org.xml.sax.SAXException
{
/* Remember the mapping, and at what depth it was declared
* This is one greater than the current depth because these
* mappings will apply to the next depth. This is in
* consideration that startElement() will soon be called
*/
boolean pushed;
int pushDepth;
if (shouldFlush)
{
flushPending();
// the prefix mapping applies to the child element (one deeper)
pushDepth = m_elemContext.m_currentElemDepth + 1;
}
else
{
// the prefix mapping applies to the current element
pushDepth = m_elemContext.m_currentElemDepth;
}
pushed = m_prefixMap.pushNamespace(prefix, uri, pushDepth);
if (pushed)
{
/* Brian M.: don't know if we really needto do this. The
* callers of this object should have injected both
* startPrefixMapping and the attributes. We are
* just covering our butt here.
*/
String name;
if (EMPTYSTRING.equals(prefix))
{
name = "xmlns";
addAttributeAlways(XMLNS_URI, name, name, "CDATA", uri, false);
}
else
{
if (!EMPTYSTRING.equals(uri))
// hack for XSLTC attribset16 test
{ // that maps ns1 prefix to "" URI
name = "xmlns:" + prefix;
/* for something like xmlns:abc="w3.pretend.org"
* the uri is the value, that is why we pass it in the
* value, or 5th slot of addAttributeAlways()
*/
addAttributeAlways(XMLNS_URI, prefix, name, "CDATA", uri, false);
}
}
}
return pushed;
}
/**
* Receive notification of an XML comment anywhere in the document. This
* callback will be used for comments inside or outside the document
* element, including comments in the external DTD subset (if read).
* @param ch An array holding the characters in the comment.
* @param start The starting position in the array.
* @param length The number of characters to use from the array.
* @throws org.xml.sax.SAXException The application may raise an exception.
*/
public void comment(char ch[], int start, int length)
throws org.xml.sax.SAXException
{
int start_old = start;
if (m_inEntityRef)
return;
if (m_elemContext.m_startTagOpen)
{
closeStartTag();
m_elemContext.m_startTagOpen = false;
}
else if (m_needToCallStartDocument)
{
startDocumentInternal();
m_needToCallStartDocument = false;
}
try
{
final int limit = start + length;
boolean wasDash = false;
if (m_cdataTagOpen)
closeCDATA();
if (shouldIndent())
indent();
final java.io.Writer writer = m_writer;
writer.write(COMMENT_BEGIN);
// Detect occurrences of two consecutive dashes, handle as necessary.
for (int i = start; i < limit; i++)
{
if (wasDash && ch[i] == '-')
{
writer.write(ch, start, i - start);
writer.write(" -");
start = i + 1;
}
wasDash = (ch[i] == '-');
}
// if we have some chars in the comment
if (length > 0)
{
// Output the remaining characters (if any)
final int remainingChars = (limit - start);
if (remainingChars > 0)
writer.write(ch, start, remainingChars);
// Protect comment end from a single trailing dash
if (ch[limit - 1] == '-')
writer.write(' ');
}
writer.write(COMMENT_END);
}
catch (IOException e)
{
throw new SAXException(e);
}
/*
* Don't write out any indentation whitespace now,
* because there may be non-whitespace text after this.
*
* Simply mark that at this point if we do decide
* to indent that we should
* add a newline on the end of the current line before
* the indentation at the start of the next line.
*/
m_startNewLine = true;
// time to generate comment event
if (m_tracer != null)
super.fireCommentEvent(ch, start_old,length);
}
/**
* Report the end of a CDATA section.
* @throws org.xml.sax.SAXException The application may raise an exception.
*
* @see #startCDATA
*/
public void endCDATA() throws org.xml.sax.SAXException
{
if (m_cdataTagOpen)
closeCDATA();
m_cdataStartCalled = false;
}
/**
* Report the end of DTD declarations.
* @throws org.xml.sax.SAXException The application may raise an exception.
* @see #startDTD
*/
public void endDTD() throws org.xml.sax.SAXException
{
try
{
if (m_needToOutputDocTypeDecl)
{
outputDocTypeDecl(m_elemContext.m_elementName, false);
m_needToOutputDocTypeDecl = false;
}
final java.io.Writer writer = m_writer;
if (!m_inDoctype)
writer.write("]>");
else
{
writer.write('>');
}
writer.write(m_lineSep, 0, m_lineSepLen);
}
catch (IOException e)
{
throw new SAXException(e);
}
}
/**
* End the scope of a prefix-URI Namespace mapping.
* @see org.xml.sax.ContentHandler#endPrefixMapping
*
* @param prefix The prefix that was being mapping.
* @throws org.xml.sax.SAXException The client may throw
* an exception during processing.
*/
public void endPrefixMapping(String prefix) throws org.xml.sax.SAXException
{ // do nothing
}
/**
* Receive notification of ignorable whitespace in element content.
*
* Not sure how to get this invoked quite yet.
*
* @param ch The characters from the XML document.
* @param start The start position in the array.
* @param length The number of characters to read from the array.
* @throws org.xml.sax.SAXException Any SAX exception, possibly
* wrapping another exception.
* @see #characters
*
* @throws org.xml.sax.SAXException
*/
public void ignorableWhitespace(char ch[], int start, int length)
throws org.xml.sax.SAXException
{
if (0 == length)
return;
characters(ch, start, length);
}
/**
* Receive notification of a skipped entity.
* @see org.xml.sax.ContentHandler#skippedEntity
*
* @param name The name of the skipped entity. If it is a
* parameter entity, the name will begin with '%',
* and if it is the external DTD subset, it will be the string
* "[dtd]".
* @throws org.xml.sax.SAXException Any SAX exception, possibly wrapping
* another exception.
*/
public void skippedEntity(String name) throws org.xml.sax.SAXException
{ // TODO: Should handle
}
/**
* Report the start of a CDATA section.
*
* @throws org.xml.sax.SAXException The application may raise an exception.
* @see #endCDATA
*/
public void startCDATA() throws org.xml.sax.SAXException
{
m_cdataStartCalled = true;
}
/**
* Report the beginning of an entity.
*
* The start and end of the document entity are not reported.
* The start and end of the external DTD subset are reported
* using the pseudo-name "[dtd]". All other events must be
* properly nested within start/end entity events.
*
* @param name The name of the entity. If it is a parameter
* entity, the name will begin with '%'.
* @throws org.xml.sax.SAXException The application may raise an exception.
* @see #endEntity
* @see org.xml.sax.ext.DeclHandler#internalEntityDecl
* @see org.xml.sax.ext.DeclHandler#externalEntityDecl
*/
public void startEntity(String name) throws org.xml.sax.SAXException
{
if (name.equals("[dtd]"))
m_inExternalDTD = true;
if (!m_expandDTDEntities && !m_inExternalDTD) {
/* Only leave the entity as-is if
* we've been told not to expand them
* and this is not the magic [dtd] name.
*/
startNonEscaping();
characters("&" + name + ';');
endNonEscaping();
}
m_inEntityRef = true;
}
/**
* For the enclosing elements starting tag write out
* out any attributes followed by ">"
*
* @throws org.xml.sax.SAXException
*/
protected void closeStartTag() throws SAXException
{
if (m_elemContext.m_startTagOpen)
{
try
{
if (m_tracer != null)
super.fireStartElem(m_elemContext.m_elementName);
int nAttrs = m_attributes.getLength();
if (nAttrs > 0)
{
processAttributes(m_writer, nAttrs);
// clear attributes object for re-use with next element
m_attributes.clear();
}
m_writer.write('>');
}
catch (IOException e)
{
throw new SAXException(e);
}
/* whether Xalan or XSLTC, we have the prefix mappings now, so
* lets determine if the current element is specified in the cdata-
* section-elements list.
*/
if (m_CdataElems != null)
m_elemContext.m_isCdataSection = isCdataSection();
if (m_doIndent)
{
m_isprevtext = false;
m_preserves.push(m_ispreserve);
}
}
}
/**
* Report the start of DTD declarations, if any.
*
* Any declarations are assumed to be in the internal subset unless
* otherwise indicated.
*
* @param name The document type name.
* @param publicId The declared public identifier for the
* external DTD subset, or null if none was declared.
* @param systemId The declared system identifier for the
* external DTD subset, or null if none was declared.
* @throws org.xml.sax.SAXException The application may raise an
* exception.
* @see #endDTD
* @see #startEntity
*/
public void startDTD(String name, String publicId, String systemId)
throws org.xml.sax.SAXException
{
setDoctypeSystem(systemId);
setDoctypePublic(publicId);
m_elemContext.m_elementName = name;
m_inDoctype = true;
}
/**
* Returns the m_indentAmount.
* @return int
*/
public int getIndentAmount()
{
return m_indentAmount;
}
/**
* Sets the m_indentAmount.
*
* @param m_indentAmount The m_indentAmount to set
*/
public void setIndentAmount(int m_indentAmount)
{
this.m_indentAmount = m_indentAmount;
}
/**
* Tell if, based on space preservation constraints and the doIndent property,
* if an indent should occur.
*
* @return True if an indent should occur.
*/
protected boolean shouldIndent()
{
return m_doIndent && (!m_ispreserve && !m_isprevtext) && m_elemContext.m_currentElemDepth > 0;
}
/**
* Searches for the list of qname properties with the specified key in the
* property list. If the key is not found in this property list, the default
* property list, and its defaults, recursively, are then checked. The
* method returns <code>null</code> if the property is not found.
*
* @param key the property key.
* @param props the list of properties to search in.
*
* Sets the vector of local-name/URI pairs of the cdata section elements
* specified in the cdata-section-elements property.
*
* This method is essentially a copy of getQNameProperties() from
* OutputProperties. Eventually this method should go away and a call
* to setCdataSectionElements(Vector v) should be made directly.
*/
private void setCdataSectionElements(String key, Properties props)
{
String s = props.getProperty(key);
if (null != s)
{
// Vector of URI/LocalName pairs
Vector v = new Vector();
int l = s.length();
boolean inCurly = false;
StringBuffer buf = new StringBuffer();
// parse through string, breaking on whitespaces. I do this instead
// of a tokenizer so I can track whitespace inside of curly brackets,
// which theoretically shouldn't happen if they contain legal URLs.
for (int i = 0; i < l; i++)
{
char c = s.charAt(i);
if (Character.isWhitespace(c))
{
if (!inCurly)
{
if (buf.length() > 0)
{
addCdataSectionElement(buf.toString(), v);
buf.setLength(0);
}
continue;
}
}
else if ('{' == c)
inCurly = true;
else if ('}' == c)
inCurly = false;
buf.append(c);
}
if (buf.length() > 0)
{
addCdataSectionElement(buf.toString(), v);
buf.setLength(0);
}
// call the official, public method to set the collected names
setCdataSectionElements(v);
}
}
/**
* Adds a URI/LocalName pair of strings to the list.
*
* @param URI_and_localName String of the form "{uri}local" or "local"
*
* @return a QName object
*/
private void addCdataSectionElement(String URI_and_localName, Vector v)
{
StringTokenizer tokenizer =
new StringTokenizer(URI_and_localName, "{}", false);
String s1 = tokenizer.nextToken();
String s2 = tokenizer.hasMoreTokens() ? tokenizer.nextToken() : null;
if (null == s2)
{
// add null URI and the local name
v.addElement(null);
v.addElement(s1);
}
else
{
// add URI, then local name
v.addElement(s1);
v.addElement(s2);
}
}
/**
* Remembers the cdata sections specified in the cdata-section-elements.
* The "official way to set URI and localName pairs.
* This method should be used by both Xalan and XSLTC.
*
* @param URI_and_localNames a vector of pairs of Strings (URI/local)
*/
public void setCdataSectionElements(Vector URI_and_localNames)
{
// convert to the new way.
if (URI_and_localNames != null)
{
final int len = URI_and_localNames.size() - 1;
if (len > 0)
{
final StringBuffer sb = new StringBuffer();
for (int i = 0; i < len; i += 2)
{
// whitspace separated "{uri1}local1 {uri2}local2 ..."
if (i != 0)
sb.append(' ');
final String uri = (String) URI_and_localNames.elementAt(i);
final String localName =
(String) URI_and_localNames.elementAt(i + 1);
if (uri != null)
{
// If there is no URI don't put this in, just the localName then.
sb.append('{');
sb.append(uri);
sb.append('}');
}
sb.append(localName);
}
m_StringOfCDATASections = sb.toString();
}
}
initCdataElems(m_StringOfCDATASections);
}
/**
* Makes sure that the namespace URI for the given qualified attribute name
* is declared.
* @param ns the namespace URI
* @param rawName the qualified name
* @return returns null if no action is taken, otherwise it returns the
* prefix used in declaring the namespace.
* @throws SAXException
*/
protected String ensureAttributesNamespaceIsDeclared(
String ns,
String localName,
String rawName)
throws org.xml.sax.SAXException
{
if (ns != null && ns.length() > 0)
{
// extract the prefix in front of the raw name
int index = 0;
String prefixFromRawName =
(index = rawName.indexOf(":")) < 0
? ""
: rawName.substring(0, index);
if (index > 0)
{
// we have a prefix, lets see if it maps to a namespace
String uri = m_prefixMap.lookupNamespace(prefixFromRawName);
if (uri != null && uri.equals(ns))
{
// the prefix in the raw name is already maps to the given namespace uri
// so we don't need to do anything
return null;
}
else
{
// The uri does not map to the prefix in the raw name,
// so lets make the mapping.
this.startPrefixMapping(prefixFromRawName, ns, false);
this.addAttribute(
"http://www.w3.org/2000/xmlns/",
prefixFromRawName,
"xmlns:" + prefixFromRawName,
"CDATA",
ns, false);
return prefixFromRawName;
}
}
else
{
// we don't have a prefix in the raw name.
// Does the URI map to a prefix already?
String prefix = m_prefixMap.lookupPrefix(ns);
if (prefix == null)
{
// uri is not associated with a prefix,
// so lets generate a new prefix to use
prefix = m_prefixMap.generateNextPrefix();
this.startPrefixMapping(prefix, ns, false);
this.addAttribute(
"http://www.w3.org/2000/xmlns/",
prefix,
"xmlns:" + prefix,
"CDATA",
ns, false);
}
return prefix;
}
}
return null;
}
void ensurePrefixIsDeclared(String ns, String rawName)
throws org.xml.sax.SAXException
{
if (ns != null && ns.length() > 0)
{
int index;
final boolean no_prefix = ((index = rawName.indexOf(":")) < 0);
String prefix = (no_prefix) ? "" : rawName.substring(0, index);
if (null != prefix)
{
String foundURI = m_prefixMap.lookupNamespace(prefix);
if ((null == foundURI) || !foundURI.equals(ns))
{
this.startPrefixMapping(prefix, ns);
// Bugzilla1133: Generate attribute as well as namespace event.
// SAX does expect both.
this.addAttributeAlways(
"http://www.w3.org/2000/xmlns/",
no_prefix ? "xmlns" : prefix, // local name
no_prefix ? "xmlns" : ("xmlns:"+ prefix), // qname
"CDATA",
ns,
false);
}
}
}
}
/**
* This method flushes any pending events, which can be startDocument()
* closing the opening tag of an element, or closing an open CDATA section.
*/
public void flushPending() throws SAXException
{
if (m_needToCallStartDocument)
{
startDocumentInternal();
m_needToCallStartDocument = false;
}
if (m_elemContext.m_startTagOpen)
{
closeStartTag();
m_elemContext.m_startTagOpen = false;
}
if (m_cdataTagOpen)
{
closeCDATA();
m_cdataTagOpen = false;
}
if (m_writer != null) {
try {
m_writer.flush();
}
catch(IOException e) {
// what? me worry?
}
}
}
public void setContentHandler(ContentHandler ch)
{
// this method is really only useful in the ToSAXHandler classes but it is
// in the interface. If the method defined here is ever called
// we are probably in trouble.
}
/**
* Adds the given attribute to the set of attributes, even if there is
* no currently open element. This is useful if a SAX startPrefixMapping()
* should need to add an attribute before the element name is seen.
*
* This method is a copy of its super classes method, except that some
* tracing of events is done. This is so the tracing is only done for
* stream serializers, not for SAX ones.
*
* @param uri the URI of the attribute
* @param localName the local name of the attribute
* @param rawName the qualified name of the attribute
* @param type the type of the attribute (probably CDATA)
* @param value the value of the attribute
* @param xslAttribute true if this attribute is coming from an xsl:attribute element.
* @return true if the attribute value was added,
* false if the attribute already existed and the value was
* replaced with the new value.
*/
public boolean addAttributeAlways(
String uri,
String localName,
String rawName,
String type,
String value,
boolean xslAttribute)
{
boolean was_added;
int index;
if (uri == null || localName == null || uri.length() == 0)
index = m_attributes.getIndex(rawName);
else {
index = m_attributes.getIndex(uri, localName);
}
if (index >= 0)
{
String old_value = null;
if (m_tracer != null)
{
old_value = m_attributes.getValue(index);
if (value.equals(old_value))
old_value = null;
}
/* We've seen the attribute before.
* We may have a null uri or localName, but all we really
* want to re-set is the value anyway.
*/
m_attributes.setValue(index, value);
was_added = false;
if (old_value != null)
firePseudoAttributes();
}
else
{
// the attribute doesn't exist yet, create it
if (xslAttribute)
{
/*
* This attribute is from an xsl:attribute element so we take some care in
* adding it, e.g.
* <elem1 foo:attr1="1" xmlns:foo="uri1">
* <xsl:attribute name="foo:attr2">2</xsl:attribute>
* </elem1>
*
* We are adding attr1 and attr2 both as attributes of elem1,
* and this code is adding attr2 (the xsl:attribute ).
* We could have a collision with the prefix like in the example above.
*/
// In the example above, is there a prefix like foo ?
final int colonIndex = rawName.indexOf(':');
if (colonIndex > 0)
{
String prefix = rawName.substring(0,colonIndex);
NamespaceMappings.MappingRecord existing_mapping = m_prefixMap.getMappingFromPrefix(prefix);
/* Before adding this attribute (foo:attr2),
* is the prefix for it (foo) already mapped at the current depth?
*/
if (existing_mapping != null
&& existing_mapping.m_declarationDepth == m_elemContext.m_currentElemDepth
&& !existing_mapping.m_uri.equals(uri))
{
/*
* There is an existing mapping of this prefix,
* it differs from the one we need,
* and unfortunately it is at the current depth so we
* can not over-ride it.
*/
/*
* Are we lucky enough that an existing other prefix maps to this URI ?
*/
prefix = m_prefixMap.lookupPrefix(uri);
if (prefix == null)
{
/* Unfortunately there is no existing prefix that happens to map to ours,
* so to avoid a prefix collision we must generated a new prefix to use.
* This is OK because the prefix URI mapping
* defined in the xsl:attribute is short in scope,
* just the xsl:attribute element itself,
* and at this point in serialization the body of the
* xsl:attribute, if any, is just a String. Right?
* . . . I sure hope so - Brian M.
*/
prefix = m_prefixMap.generateNextPrefix();
}
rawName = prefix + ':' + localName;
}
}
try
{
/* This is our last chance to make sure the namespace for this
* attribute is declared, especially if we just generated an alternate
* prefix to avoid a collision (the new prefix/rawName will go out of scope
* soon and be lost ... last chance here.
*/
String prefixUsed =
ensureAttributesNamespaceIsDeclared(
uri,
localName,
rawName);
}
catch (SAXException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
m_attributes.addAttribute(uri, localName, rawName, type, value);
was_added = true;
if (m_tracer != null)
firePseudoAttributes();
}
return was_added;
}
/**
* To fire off the pseudo characters of attributes, as they currently
* exist. This method should be called everytime an attribute is added,
* or when an attribute value is changed, or an element is created.
*/
protected void firePseudoAttributes()
{
if (m_tracer != null)
{
try
{
// flush out the "<elemName" if not already flushed
m_writer.flush();
// make a StringBuffer to write the name="value" pairs to.
StringBuffer sb = new StringBuffer();
int nAttrs = m_attributes.getLength();
if (nAttrs > 0)
{
// make a writer that internally appends to the same
// StringBuffer
java.io.Writer writer =
new ToStream.WritertoStringBuffer(sb);
processAttributes(writer, nAttrs);
// Don't clear the attributes!
// We only want to see what would be written out
// at this point, we don't want to loose them.
}
sb.append('>'); // the potential > after the attributes.
// convert the StringBuffer to a char array and
// emit the trace event that these characters "might"
// be written
char ch[] = sb.toString().toCharArray();
m_tracer.fireGenerateEvent(
SerializerTrace.EVENTTYPE_OUTPUT_PSEUDO_CHARACTERS,
ch,
0,
ch.length);
}
catch (IOException ioe)
{
// ignore ?
}
catch (SAXException se)
{
// ignore ?
}
}
}
/**
* This inner class is used only to collect attribute values
* written by the method writeAttrString() into a string buffer.
* In this manner trace events, and the real writing of attributes will use
* the same code.
*/
private class WritertoStringBuffer extends java.io.Writer
{
final private StringBuffer m_stringbuf;
/**
* @see java.io.Writer#write(char[], int, int)
*/
WritertoStringBuffer(StringBuffer sb)
{
m_stringbuf = sb;
}
public void write(char[] arg0, int arg1, int arg2) throws IOException
{
m_stringbuf.append(arg0, arg1, arg2);
}
/**
* @see java.io.Writer#flush()
*/
public void flush() throws IOException
{
}
/**
* @see java.io.Writer#close()
*/
public void close() throws IOException
{
}
public void write(int i)
{
m_stringbuf.append((char) i);
}
public void write(String s)
{
m_stringbuf.append(s);
}
}
/**
* @see SerializationHandler#setTransformer(Transformer)
*/
public void setTransformer(Transformer transformer) {
super.setTransformer(transformer);
if (m_tracer != null
&& !(m_writer instanceof SerializerTraceWriter) )
setWriterInternal(new SerializerTraceWriter(m_writer, m_tracer), false);
}
/**
* Try's to reset the super class and reset this class for
* re-use, so that you don't need to create a new serializer
* (mostly for performance reasons).
*
* @return true if the class was successfuly reset.
*/
public boolean reset()
{
boolean wasReset = false;
if (super.reset())
{
resetToStream();
wasReset = true;
}
return wasReset;
}
/**
* Reset all of the fields owned by ToStream class
*
*/
private void resetToStream()
{
this.m_cdataStartCalled = false;
/* The stream is being reset. It is one of
* ToXMLStream, ToHTMLStream ... and this type can't be changed
* so neither should m_charInfo which is associated with the
* type of Stream. Just leave m_charInfo as-is for the next re-use.
*
*/
// this.m_charInfo = null; // don't set to null
this.m_disableOutputEscapingStates.clear();
// this.m_encodingInfo = null; // don't set to null
this.m_escaping = true;
// Leave m_format alone for now - Brian M.
// this.m_format = null;
this.m_expandDTDEntities = true;
this.m_inDoctype = false;
this.m_ispreserve = false;
this.m_isprevtext = false;
this.m_isUTF8 = false; // ?? used anywhere ??
this.m_lineSep = s_systemLineSep;
this.m_lineSepLen = s_systemLineSep.length;
this.m_lineSepUse = true;
// this.m_outputStream = null; // Don't reset it may be re-used
this.m_preserves.clear();
this.m_shouldFlush = true;
this.m_spaceBeforeClose = false;
this.m_startNewLine = false;
this.m_writer_set_by_user = false;
}
/**
* Sets the character encoding coming from the xsl:output encoding stylesheet attribute.
* @param encoding the character encoding
*/
public void setEncoding(String encoding)
{
setOutputProperty(OutputKeys.ENCODING,encoding);
}
/**
* Simple stack for boolean values.
*
* This class is a copy of the one in org.apache.xml.utils.
* It exists to cut the serializers dependancy on that package.
* A minor changes from that package are:
* doesn't implement Clonable
*
* @xsl.usage internal
*/
static final class BoolStack
{
/** Array of boolean values */
private boolean m_values[];
/** Array size allocated */
private int m_allocatedSize;
/** Index into the array of booleans */
private int m_index;
/**
* Default constructor. Note that the default
* block size is very small, for small lists.
*/
public BoolStack()
{
this(32);
}
/**
* Construct a IntVector, using the given block size.
*
* @param size array size to allocate
*/
public BoolStack(int size)
{
m_allocatedSize = size;
m_values = new boolean[size];
m_index = -1;
}
/**
* Get the length of the list.
*
* @return Current length of the list
*/
public final int size()
{
return m_index + 1;
}
/**
* Clears the stack.
*
*/
public final void clear()
{
m_index = -1;
}
/**
* Pushes an item onto the top of this stack.
*
*
* @param val the boolean to be pushed onto this stack.
* @return the <code>item</code> argument.
*/
public final boolean push(boolean val)
{
if (m_index == m_allocatedSize - 1)
grow();
return (m_values[++m_index] = val);
}
/**
* Removes the object at the top of this stack and returns that
* object as the value of this function.
*
* @return The object at the top of this stack.
* @throws EmptyStackException if this stack is empty.
*/
public final boolean pop()
{
return m_values[m_index--];
}
/**
* Removes the object at the top of this stack and returns the
* next object at the top as the value of this function.
*
*
* @return Next object to the top or false if none there
*/
public final boolean popAndTop()
{
m_index--;
return (m_index >= 0) ? m_values[m_index] : false;
}
/**
* Set the item at the top of this stack
*
*
* @param b Object to set at the top of this stack
*/
public final void setTop(boolean b)
{
m_values[m_index] = b;
}
/**
* Looks at the object at the top of this stack without removing it
* from the stack.
*
* @return the object at the top of this stack.
* @throws EmptyStackException if this stack is empty.
*/
public final boolean peek()
{
return m_values[m_index];
}
/**
* Looks at the object at the top of this stack without removing it
* from the stack. If the stack is empty, it returns false.
*
* @return the object at the top of this stack.
*/
public final boolean peekOrFalse()
{
return (m_index > -1) ? m_values[m_index] : false;
}
/**
* Looks at the object at the top of this stack without removing it
* from the stack. If the stack is empty, it returns true.
*
* @return the object at the top of this stack.
*/
public final boolean peekOrTrue()
{
return (m_index > -1) ? m_values[m_index] : true;
}
/**
* Tests if this stack is empty.
*
* @return <code>true</code> if this stack is empty;
* <code>false</code> otherwise.
*/
public boolean isEmpty()
{
return (m_index == -1);
}
/**
* Grows the size of the stack
*
*/
private void grow()
{
m_allocatedSize *= 2;
boolean newVector[] = new boolean[m_allocatedSize];
System.arraycopy(m_values, 0, newVector, 0, m_index + 1);
m_values = newVector;
}
}
// Implement DTDHandler
/**
* If this method is called, the serializer is used as a
* DTDHandler, which changes behavior how the serializer
* handles document entities.
* @see org.xml.sax.DTDHandler#notationDecl(java.lang.String, java.lang.String, java.lang.String)
*/
public void notationDecl(String name, String pubID, String sysID) throws SAXException {
// TODO Auto-generated method stub
try {
DTDprolog();
m_writer.write("<!NOTATION ");
m_writer.write(name);
if (pubID != null) {
m_writer.write(" PUBLIC \"");
m_writer.write(pubID);
}
else {
m_writer.write(" SYSTEM \"");
m_writer.write(sysID);
}
m_writer.write("\" >");
m_writer.write(m_lineSep, 0, m_lineSepLen);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/**
* If this method is called, the serializer is used as a
* DTDHandler, which changes behavior how the serializer
* handles document entities.
* @see org.xml.sax.DTDHandler#unparsedEntityDecl(java.lang.String, java.lang.String, java.lang.String, java.lang.String)
*/
public void unparsedEntityDecl(String name, String pubID, String sysID, String notationName) throws SAXException {
// TODO Auto-generated method stub
try {
DTDprolog();
m_writer.write("<!ENTITY ");
m_writer.write(name);
if (pubID != null) {
m_writer.write(" PUBLIC \"");
m_writer.write(pubID);
}
else {
m_writer.write(" SYSTEM \"");
m_writer.write(sysID);
}
m_writer.write("\" NDATA ");
m_writer.write(notationName);
m_writer.write(" >");
m_writer.write(m_lineSep, 0, m_lineSepLen);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/**
* A private helper method to output the
* @throws SAXException
* @throws IOException
*/
private void DTDprolog() throws SAXException, IOException {
final java.io.Writer writer = m_writer;
if (m_needToOutputDocTypeDecl)
{
outputDocTypeDecl(m_elemContext.m_elementName, false);
m_needToOutputDocTypeDecl = false;
}
if (m_inDoctype)
{
writer.write(" [");
writer.write(m_lineSep, 0, m_lineSepLen);
m_inDoctype = false;
}
}
/**
* If set to false the serializer does not expand DTD entities,
* but leaves them as is, the default value is true;
*/
public void setDTDEntityExpansion(boolean expand) {
m_expandDTDEntities = expand;
}
/**
* Sets the end of line characters to be used during serialization
* @param eolChars A character array corresponding to the characters to be used.
*/
public void setNewLine (char[] eolChars) {
m_lineSep = eolChars;
m_lineSepLen = eolChars.length;
}
/**
* Remembers the cdata sections specified in the cdata-section-elements by appending the given
* cdata section elements to the list. This method can be called multiple times, but once an
* element is put in the list of cdata section elements it can not be removed.
* This method should be used by both Xalan and XSLTC.
*
* @param URI_and_localNames a whitespace separated list of element names, each element
* is a URI in curly braces (optional) and a local name. An example of such a parameter is:
* "{http://company.com}price {myURI2}book chapter"
*/
public void addCdataSectionElements(String URI_and_localNames)
{
if (URI_and_localNames != null)
initCdataElems(URI_and_localNames);
if (m_StringOfCDATASections == null)
m_StringOfCDATASections = URI_and_localNames;
else
m_StringOfCDATASections += (" " + URI_and_localNames);
}
}