in serializer/src/main/java/org/apache/xml/serializer/ToStream.java [1434:1706]
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;
i = start;
// Note: The case where m_pendingHighUTF16Surrogate is set upon entry
// but the first character is not the low surrogate is perplexing.
// THEORETICALLY, everything but characters() should recognize that
// case as meaning characters() just ended abnormally and flush or
// report the isolated high surrogate before they start, rather than
// leaving it for us to erroneously insert into the next character block.
// But that's a pretty pervasive change for a rare error case.
//
// (Not handling it that way risks the high surrogate being flushed into
// the start of the next characters() block, and that in turn would need
// a special case here or it would be flushed after the whitespace...
// This needs more thought. GONK TODO REVIEW.
// process any leading whitespace
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(" ");
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;
// Process characters after initial whitespace (if any)
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. '&' --> "&"
// e.g. '<' --> "<"
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 "�"
// 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(" ");
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("
");
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 if (Encodings.isLowUTF16Surrogate(ch)) {
if(m_encodingInfo.isInEncoding(m_pendingHighUTF16Surrogate,ch)) {
char[] buffer= {m_pendingHighUTF16Surrogate,ch};
writer.write(buffer);
} else {
// Clean characters should have been flushed by high surrogate
int codepoint = Encodings.toCodePoint(m_pendingHighUTF16Surrogate,ch);
writer.write("&#");
writer.write(Integer.toString(codepoint));
writer.write(';');
}
m_pendingHighUTF16Surrogate=0;
lastDirtyCharProcessed=i;
}
else if (Encodings.isHighUTF16Surrogate(ch)) {
writeOutCleanChars(chars,i,lastDirtyCharProcessed);
m_pendingHighUTF16Surrogate=ch;
lastDirtyCharProcessed=i;
}
else {
// This is a fallback plan, we get here if the
// encoding doesn't contain ch and it's not part
// of a surrogate pair
// The right thing is to write out an entity
writeOutCleanChars(chars, i, lastDirtyCharProcessed);
writer.write("&#");
writer.write(Integer.toString(ch));
writer.write(';');
lastDirtyCharProcessed = i;
}
} // end input scan loop
// 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);
}