// Implements Reusable.
public void reset() {
// Resets all members (alphabetically ordered).
_attributes.reset();
_attrPrefixSep = 0;
_attrQName = null;
_attrValue = null;
_attrQName = null;
_charactersPending = false;
_encoding = null;
_entities.reset();
_eventType = START_DOCUMENT;
_index = 0;
_isEmpty = false;
_location.reset();
_namespaces.reset();
_prolog = null;
_readCount = 0;
_reader = null;
_depth = 0;
_readIndex = 0;
_seqsIndex = 0;
_start = 0;
_startOffset = 0;
_state = STATE_CHARACTERS;
_utf8StreamReader.reset();
// Recycles if factory produced.
if (_factory != null) _factory.recycle(this);
}
/** Reloads data buffer. */
private void reloadBuffer() throws XMLStreamException {
if (_reader == null) throw new XMLStreamException("Input not specified");
_location._column += _readIndex;
_location._charactersRead += _readIndex;
_readIndex = 0;
try {
_readCount = _reader.read(_readBuffer, 0, _readBuffer.length);
if ((_readCount <= 0) && ((_depth != 0) || (_state != STATE_CHARACTERS)))
throw new XMLUnexpectedEndOfDocumentException("Unexpected end of document", _location);
} catch (IOException e) {
throw new XMLStreamException(e);
}
while ((_index + _readCount) >= _data.length) { // Potential overflow.
increaseDataBuffer();
}
}
/**
* Handles end of line as per XML Spec. 2.11
*
* @param c the potential end of line character.
* @return the replacement character for end of line.
*/
private char handleEndOfLine(char c) throws XMLStreamException {
if (c == 0xD) { // Replaces #xD with #xA
// Unless next char is #xA, then skip,
// #xD#xA will be replaced by #xA
if (_readIndex >= _readCount) reloadBuffer();
if ((_readIndex < _readCount) && (_readBuffer[_readIndex] == 0xA)) {
_readIndex++; // Skips 0xD
_location._totalCharsRead++;
}
c = (char) 0xA;
}
if (c == 0xA) {
_location._line++;
_location._column = -_readIndex; // column = 0
} else if (c == 0x0) {
throw new XMLStreamException("Illegal XML character U+0000", _location);
}
return c;
}
// Implements XMLStreamReader Interface.
public int next() throws XMLStreamException {
// Clears previous state.
if (_eventType == START_ELEMENT) {
if (_isEmpty) { // Previous empty tag, generates END_TAG automatically.
_isEmpty = false;
return _eventType = END_ELEMENT;
}
} else if (_eventType == END_ELEMENT) {
_namespaces.pop();
CharArray startElem = _elemStack[_depth--];
_start = _index = startElem.offset();
// TODO: does this loop do anything at all?
while (_seqs[--_seqsIndex] != startElem) { // Recycles CharArray instances.
}
}
// Reader loop.
while (true) {
// Main character reading block.
if ((_readIndex >= _readCount) && isEndOfStream())
return _eventType; // END_DOCUMENT or CHARACTERS.
char c = _readBuffer[_readIndex++];
_location._totalCharsRead++;
if (c <= '&') c = (c == '&') ? replaceEntity() : (c < ' ') ? handleEndOfLine(c) : c;
_data[_index++] = c;
// Main processing.
//
switch (_state) {
case STATE_CHARACTERS:
while (true) { // Read characters data all at once.
if (c == '<') {
int length = _index - _start - 1;
if (length > 0) {
if (_charactersPending) {
_text.setArray(_data, _text.offset(), _text.length() + length); // Coalescing.
} else {
_text = newSeq(_start, length);
_charactersPending = true;
}
_start = _index - 1; // Keeps '<' as part of markup.
}
_state = STATE_MARKUP;
break;
}
// Local character reading block.
if ((_readIndex >= _readCount) && isEndOfStream()) return _eventType;
c = _readBuffer[_readIndex++];
_location._totalCharsRead++;
if (c <= '&') c = (c == '&') ? replaceEntity() : (c < ' ') ? handleEndOfLine(c) : c;
_data[_index++] = c;
}
break;
case STATE_CDATA:
while (true) { // Reads CDATA all at once.
if ((c == '>')
&& (_index - _start >= 3)
&& (_data[_index - 2] == ']')
&& (_data[_index - 3] == ']')) {
_index -= 3;
int length = _index - _start;
if (length > 0) { // Not empty.
if (_charactersPending) {
_text.setArray(_data, _text.offset(), _text.length() + length); // Coalescing.
} else {
_text = newSeq(_start, length);
_charactersPending = true;
}
}
_start = _index;
_state = STATE_CHARACTERS;
break;
}
// Local character reading block.
if (_readIndex >= _readCount) reloadBuffer();
c = _readBuffer[_readIndex++];
_location._totalCharsRead++;
if (c < ' ') c = handleEndOfLine(c);
_data[_index++] = c;
}
break;
case STATE_DTD:
if (c == '>') {
_text = newSeq(_start, _index - _start);
_index = _start; // Do not keep DTD.
_state = STATE_CHARACTERS;
return _eventType = DTD;
} else if (c == '[') {
_state = STATE_DTD_INTERNAL;
}
break;
case STATE_DTD_INTERNAL:
if (c == ']') {
_state = STATE_DTD;
}
break;
case STATE_MARKUP: // Starts with '<'
if (_index - _start == 2) {
if (c == '/') {
_start = _index = _index - 2;
_state = STATE_CLOSE_TAGxREAD_ELEM_NAME;
_prefixSep = -1;
if (_charactersPending) { // Flush characters event.
_charactersPending = false;
return _eventType = CHARACTERS;
}
} else if (c == '?') {
_start = _index = _index - 2;
_state = STATE_PI;
if (_charactersPending) { // Flush characters event.
_charactersPending = false;
return _eventType = CHARACTERS;
}
} else if (c != '!') { // Element tag (first letter).
_location._lastStartTagPos = _location._totalCharsRead - 2;
_data[_start] = c;
_index = _start + 1;
_state = STATE_OPEN_TAGxREAD_ELEM_NAME;
_prefixSep = -1;
if (_charactersPending) { // Flush character event.
_charactersPending = false;
return _eventType = CHARACTERS;
}
}
} else if ((_index - _start == 4)
&& (_data[_start + 1] == '!')
&& (_data[_start + 2] == '-')
&& (_data[_start + 3] == '-')) {
_start = _index = _index - 4; // Removes <!--
_state = STATE_COMMENT;
if (_charactersPending) { // Flush character event.
_charactersPending = false;
return _eventType = CHARACTERS;
}
} else if ((_index - _start == 9)
&& (_data[_start + 1] == '!')
&& (_data[_start + 2] == '[')
&& (_data[_start + 3] == 'C')
&& (_data[_start + 4] == 'D')
&& (_data[_start + 5] == 'A')
&& (_data[_start + 6] == 'T')
&& (_data[_start + 7] == 'A')
&& (_data[_start + 8] == '[')) {
_start = _index = _index - 9; // Do not keep <![CDATA[
_state = STATE_CDATA;
} else if ((_index - _start == 9)
&& (_data[_start + 1] == '!')
&& (_data[_start + 2] == 'D')
&& (_data[_start + 3] == 'O')
&& (_data[_start + 4] == 'C')
&& (_data[_start + 5] == 'T')
&& (_data[_start + 6] == 'Y')
&& (_data[_start + 7] == 'P')
&& (_data[_start + 8] == 'E')) {
// Keeps <!DOCTYPE as part of DTD.
_state = STATE_DTD;
} else {
// Ignores, e.g. <!ELEMENT <!ENTITY...
}
break;
case STATE_COMMENT:
while (true) { // Read comment all at once.
if ((c == '>')
&& (_index - _start >= 3)
&& (_data[_index - 2] == '-')
&& (_data[_index - 3] == '-')) {
_index -= 3; // Removes -->
_text = newSeq(_start, _index - _start);
_state = STATE_CHARACTERS;
_index = _start; // Do not keep comments.
return _eventType = COMMENT;
}
// Local character reading block.
if (_readIndex >= _readCount) reloadBuffer();
c = _readBuffer[_readIndex++];
_location._totalCharsRead++;
if (c < ' ') c = handleEndOfLine(c);
_data[_index++] = c;
}
case STATE_PI:
if ((c == '>') && (_index - _start >= 2) && (_data[_index - 2] == '?')) {
_index -= 2; // Removes ?>
_text = newSeq(_start, _index - _start);
_state = STATE_CHARACTERS;
_index = _start; // Do not keep processing instructions.
return _eventType = PROCESSING_INSTRUCTION;
}
break;
// OPEN_TAG:
case STATE_OPEN_TAGxREAD_ELEM_NAME:
_attributes.reset();
_namespaces.push();
while (true) { // Read element name all at once.
if (c < '@') { // Else avoid multiple checks.
if (c == '>') {
_qName = newSeq(_start, --_index - _start);
_start = _index;
_state = STATE_CHARACTERS;
processStartTag();
_isEmpty = false;
return _eventType = START_ELEMENT;
} else if (c == '/') {
_qName = newSeq(_start, --_index - _start);
_start = _index;
_state = STATE_OPEN_TAGxEMPTY_TAG;
break;
} else if (c == ':') {
_prefixSep = _index - 1;
} else if (c <= ' ') {
_qName = newSeq(_start, --_index - _start);
_state = STATE_OPEN_TAGxELEM_NAME_READ;
break;
}
}
if (_readIndex >= _readCount) reloadBuffer();
c = _data[_index++] = _readBuffer[_readIndex++];
_location._totalCharsRead++;
}
break;
case STATE_OPEN_TAGxELEM_NAME_READ:
if (c == '>') {
_start = --_index;
_state = STATE_CHARACTERS;
processStartTag();
_isEmpty = false;
return _eventType = START_ELEMENT;
} else if (c == '/') {
_state = STATE_OPEN_TAGxEMPTY_TAG;
} else if (c > ' ') {
_start = _index - 1; // Includes current character.
_attrPrefixSep = -1;
_state = STATE_OPEN_TAGxREAD_ATTR_NAME;
}
break;
case STATE_OPEN_TAGxREAD_ATTR_NAME:
while (true) { // Read attribute name all at once.
if (c < '@') { // Else avoid multiple checks.
if (c <= ' ') {
_attrQName = newSeq(_start, --_index - _start);
_state = STATE_OPEN_TAGxATTR_NAME_READ;
break;
} else if (c == '=') {
_attrQName = newSeq(_start, --_index - _start);
_state = STATE_OPEN_TAGxEQUAL_READ;
break;
} else if (c == ':') {
_attrPrefixSep = _index - 1;
}
}
if (_readIndex >= _readCount) reloadBuffer();
_data[_index++] = c = _readBuffer[_readIndex++];
_location._totalCharsRead++;
}
break;
case STATE_OPEN_TAGxATTR_NAME_READ:
if (c == '=') {
--_index;
_state = STATE_OPEN_TAGxEQUAL_READ;
} else if (c > ' ') {
throw new XMLStreamException("'=' expected", _location);
}
break;
case STATE_OPEN_TAGxEQUAL_READ:
if (c == '\'') {
_start = --_index;
_state = STATE_OPEN_TAGxREAD_ATTR_VALUE_SIMPLE_QUOTE;
} else if (c == '\"') {
_start = --_index;
_state = STATE_OPEN_TAGxREAD_ATTR_VALUE_DOUBLE_QUOTE;
} else if (c > ' ') {
throw new XMLStreamException("Quotes expected", _location);
}
break;
case STATE_OPEN_TAGxREAD_ATTR_VALUE_SIMPLE_QUOTE:
while (true) { // Read attribute value all at once.
if (c == '\'') {
_attrValue = newSeq(_start, --_index - _start);
processAttribute();
_state = STATE_OPEN_TAGxELEM_NAME_READ;
break;
}
// Local character reading block.
if (_readIndex >= _readCount) reloadBuffer();
c = _readBuffer[_readIndex++];
_location._totalCharsRead++;
if (c == '&') c = replaceEntity();
_data[_index++] = c;
}
break;
case STATE_OPEN_TAGxREAD_ATTR_VALUE_DOUBLE_QUOTE:
while (true) { // Read attribute value all at once.
if (c == '\"') {
_attrValue = newSeq(_start, --_index - _start);
processAttribute();
_state = STATE_OPEN_TAGxELEM_NAME_READ;
break;
}
// Local character reading block.
if (_readIndex >= _readCount) reloadBuffer();
c = _readBuffer[_readIndex++];
_location._totalCharsRead++;
if (c == '&') c = replaceEntity();
_data[_index++] = c;
}
break;
case STATE_OPEN_TAGxEMPTY_TAG:
if (c == '>') {
_start = --_index;
_state = STATE_CHARACTERS;
processStartTag();
_isEmpty = true;
return _eventType = START_ELEMENT;
} else {
throw new XMLStreamException("'>' expected", _location);
}
// CLOSE_TAG:
case STATE_CLOSE_TAGxREAD_ELEM_NAME:
while (true) { // Element name can be read all at once.
if (c < '@') { // Else avoid multiple checks.
if (c == '>') {
_qName = newSeq(_start, --_index - _start);
_start = _index;
_state = STATE_CHARACTERS;
processEndTag();
return _eventType = END_ELEMENT;
} else if (c == ':') {
_prefixSep = _index - 1;
} else if (c <= ' ') {
_qName = newSeq(_start, --_index - _start);
_state = STATE_CLOSE_TAGxELEM_NAME_READ;
break;
}
}
if (_readIndex >= _readCount) reloadBuffer();
c = _data[_index++] = _readBuffer[_readIndex++];
_location._totalCharsRead++;
}
break;
case STATE_CLOSE_TAGxELEM_NAME_READ:
if (c == '>') {
_start = --_index;
_state = STATE_CHARACTERS;
processEndTag();
return _eventType = END_ELEMENT;
} else if (c > ' ') {
throw new XMLStreamException("'>' expected", _location);
}
break;
default:
throw new XMLStreamException("State unknown: " + _state, _location);
}
}
}
/**
* Returns the textual representation of this reader current state.
*
* @return the textual representation of the current state.
*/
public String toString() {
return "XMLStreamReader - State: "
+ NAMES_OF_EVENTS[_eventType]
+ ", Location: "
+ _location.toString();
}