com.fasterxml.aalto.in
Class ReaderScanner

java.lang.Object
  com.fasterxml.aalto.in.XmlScanner
      com.fasterxml.aalto.in.ReaderScanner

All Implemented Interfaces:

XmlConsts, NamespaceContext, XMLStreamConstants

public final class ReaderScanner
extends XmlScanner

This is the concrete scanner implementation used when input comes as a Reader. In general using this scanner is quite a bit less optimal than that of InputStream based scanner. Nonetheless, it is included for completeness, since Stax interface allows passing Readers as input sources.

Field Summary

protected Reader	_in Underlying InputStream to use for reading content.
protected char[]	_inputBuffer
protected int	_inputEnd
protected int	_inputPtr
protected CharBasedPNameTable	_symbols For now, symbol table contains prefixed names.
protected int	mPastChars Number of bytes that were read and processed before the contents of the current buffer; used for calculating absolute offsets.
protected int	mRowStartOffset Offset used to calculate the column value given current input buffer pointer.
protected int	mTmpChar Storage location for a single character that can not be pushed back (for example, multi-byte char)

Fields inherited from class com.fasterxml.aalto.in.XmlScanner

_attrCollector, _attrCount, _cfgCoalescing, _cfgLazyParsing, _config, _currElem, _currNsCount, _currRow, _currToken, _defaultNs, _depth, _entityPending, _isEmptyTag, _lastNsContext, _lastNsDecl, _nameBuffer, _nsBindingCache, _nsBindingCount, _nsBindings, _nsBindMisses, _publicId, _systemId, _textBuilder, _tokenIncomplete, _tokenName, _xml11, CDATA_STR, INT_0, INT_9, INT_a, INT_A, INT_AMP, INT_APOS, INT_COLON, INT_CR, INT_EQ, INT_EXCL, INT_f, INT_F, INT_GT, INT_HYPHEN, INT_LBRACKET, INT_LF, INT_LT, INT_NULL, INT_QMARK, INT_QUOTE, INT_RBRACKET, INT_SLASH, INT_SPACE, INT_TAB, INT_z, MAX_UNICODE_CHAR, TOKEN_EOI

Fields inherited from interface com.fasterxml.aalto.util.XmlConsts

CHAR_CR, CHAR_LF, CHAR_NULL, CHAR_SPACE, STAX_DEFAULT_OUTPUT_ENCODING, STAX_DEFAULT_OUTPUT_VERSION, XML_DECL_KW_ENCODING, XML_DECL_KW_STANDALONE, XML_DECL_KW_VERSION, XML_SA_NO, XML_SA_YES, XML_V_10, XML_V_10_STR, XML_V_11, XML_V_11_STR, XML_V_UNKNOWN

Fields inherited from interface javax.xml.stream.XMLStreamConstants

ATTRIBUTE, CDATA, CHARACTERS, COMMENT, DTD, END_DOCUMENT, END_ELEMENT, ENTITY_DECLARATION, ENTITY_REFERENCE, NAMESPACE, NOTATION_DECLARATION, PROCESSING_INSTRUCTION, SPACE, START_DOCUMENT, START_ELEMENT

Constructor Summary

ReaderScanner(ReaderConfig cfg, Reader r)

ReaderScanner(ReaderConfig cfg, Reader r, char[] buffer, int ptr, int last)

Method Summary

protected void	_closeSource()
protected void	_releaseBuffers()
protected PName	addPName(char[] nameBuffer, int nameLen, int hash)
protected int	checkInTreeIndentation(char c) Note: consequtive white space is only considered indentation, if the following token seems like a tag (start/end).
protected int	checkPrologIndentation(char c)
protected void	finishCData()
protected void	finishCharacters()
protected void	finishCoalescedCData()
protected void	finishCoalescedCharacters()
protected void	finishCoalescedText() Method that gets called after a primary text segment (of type CHARACTERS or CDATA, not applicable to SPACE) has been read in text buffer.
protected void	finishComment()
protected void	finishDTD(boolean copyContents)
protected void	finishPI()
protected void	finishSpace()
int	getCurrentColumnNr()
int	getCurrentLineNr()
org.codehaus.stax2.XMLStreamLocation2	getCurrentLocation()
protected int	handleCharEntity()
protected int	handleCommentOrCdataStart()
protected int	handleEndElement()
protected int	handleEntityInText(boolean inAttr)
protected int	handlePIStart()
protected int	handlePrologDeclStart(boolean isProlog)
protected int	handleStartElement(char c)
protected boolean	loadAndRetain(int nrOfChars)
protected boolean	loadMore()
protected char	loadOne()
protected char	loadOne(int type)
protected void	markLF()
protected void	markLF(int offset)
int	nextFromProlog(boolean isProlog)
int	nextFromTree()
protected PName	parsePName(char c)
protected String	parsePublicId(char quoteChar)
protected String	parseSystemId(char quoteChar)
protected void	skipCData()
protected boolean	skipCharacters()
protected boolean	skipCoalescedText() Method that gets called after a primary text segment (of type CHARACTERS or CDATA, not applicable to SPACE) has been skipped.
protected void	skipComment()
protected char	skipInternalWs(boolean reqd, String msg)
protected void	skipPI()
protected void	skipSpace()

Methods inherited from class com.fasterxml.aalto.in.XmlScanner

bindName, bindNs, checkImmutableBinding, close, decodeAttrBinaryValue, decodeAttrValue, decodeAttrValues, decodeElements, findAttrIndex, findOrCreateBinding, finishToken, fireSaxCharacterEvents, fireSaxCommentEvent, fireSaxEndElement, fireSaxPIEvent, fireSaxSpaceEvents, fireSaxStartElement, getAttrCollector, getAttrCount, getAttrLocalName, getAttrNsURI, getAttrPrefix, getAttrPrefixedName, getAttrQName, getAttrType, getAttrValue, getAttrValue, getConfig, getDepth, getDTDPublicId, getDTDSystemId, getEndLocation, getInputPublicId, getInputSystemId, getName, getNamespacePrefix, getNamespaceURI, getNamespaceURI, getNamespaceURI, getNonTransientNamespaceContext, getNsCount, getPrefix, getPrefixes, getQName, getStartLocation, getText, getText, getTextCharacters, getTextCharacters, getTextLength, hasEmptyStack, isAttrSpecified, isEmptyTag, isTextWhitespace, loadMoreGuaranteed, loadMoreGuaranteed, reportDoubleHyphenInComments, reportDuplicateNsDecl, reportEntityOverflow, reportEofInName, reportIllegalCDataEnd, reportIllegalNsDecl, reportIllegalNsDecl, reportInputProblem, reportInvalidNameChar, reportInvalidNsIndex, reportInvalidXmlChar, reportMissingPISpace, reportMultipleColonsInName, reportPrologProblem, reportPrologUnexpChar, reportTreeUnexpChar, reportUnboundPrefix, reportUnexpandedEntityInAttr, reportUnexpectedEndTag, resetForDecoding, skipToken, throwInvalidSpace, throwInvalidXmlChar, throwNullChar, throwUnexpectedChar, verifyXmlChar

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

_in

protected Reader _in

Underlying InputStream to use for reading content.

_inputBuffer

protected char[] _inputBuffer

_inputPtr

protected int _inputPtr

_inputEnd

protected int _inputEnd

mTmpChar

protected int mTmpChar

Storage location for a single character that can not be pushed back (for example, multi-byte char)

_symbols

protected final CharBasedPNameTable _symbols

For now, symbol table contains prefixed names. In future it is possible that they may be split into prefixes and local names?

mPastChars

protected int mPastChars

Number of bytes that were read and processed before the contents of the current buffer; used for calculating absolute offsets.

mRowStartOffset

protected int mRowStartOffset

Offset used to calculate the column value given current input buffer pointer. May be negative, if the first character of the row was contained within an earlier buffer.

Constructor Detail

ReaderScanner

public ReaderScanner(ReaderConfig cfg,
                     Reader r,
                     char[] buffer,
                     int ptr,
                     int last)

ReaderScanner

public ReaderScanner(ReaderConfig cfg,
                     Reader r)

Method Detail

_releaseBuffers

protected void _releaseBuffers()

Overrides:

_releaseBuffers in class XmlScanner

_closeSource

protected void _closeSource()
                     throws IOException

Specified by:

_closeSource in class XmlScanner

Throws:

IOException

nextFromProlog

public final int nextFromProlog(boolean isProlog)
                         throws XMLStreamException

Specified by:

nextFromProlog in class XmlScanner

Throws:

XMLStreamException

nextFromTree

public final int nextFromTree()
                       throws XMLStreamException

Specified by:

nextFromTree in class XmlScanner

Throws:

XMLStreamException

handlePrologDeclStart

protected final int handlePrologDeclStart(boolean isProlog)
                                   throws XMLStreamException

Throws:

XMLStreamException

handleCommentOrCdataStart

protected final int handleCommentOrCdataStart()
                                       throws XMLStreamException

Throws:

XMLStreamException

handlePIStart

protected final int handlePIStart()
                           throws XMLStreamException

Throws:

XMLStreamException

handleCharEntity

protected final int handleCharEntity()
                              throws XMLStreamException

Returns:

Code point for the entity that expands to a valid XML content character.

Throws:

XMLStreamException

handleStartElement

protected final int handleStartElement(char c)
                                throws XMLStreamException

Throws:

XMLStreamException

handleEndElement

protected final int handleEndElement()
                              throws XMLStreamException

Throws:

XMLStreamException

handleEntityInText

protected final int handleEntityInText(boolean inAttr)
                                throws XMLStreamException

Throws:

XMLStreamException

finishComment

protected final void finishComment()
                            throws XMLStreamException

Specified by:

finishComment in class XmlScanner

Throws:

XMLStreamException

finishPI

protected final void finishPI()
                       throws XMLStreamException

Specified by:

finishPI in class XmlScanner

Throws:

XMLStreamException

finishDTD

protected final void finishDTD(boolean copyContents)
                        throws XMLStreamException

Specified by:

finishDTD in class XmlScanner

Throws:

XMLStreamException

finishCData

protected final void finishCData()
                          throws XMLStreamException

Specified by:

finishCData in class XmlScanner

Throws:

XMLStreamException

finishCharacters

protected final void finishCharacters()
                               throws XMLStreamException

Specified by:

finishCharacters in class XmlScanner

Throws:

XMLStreamException

finishSpace

protected final void finishSpace()
                          throws XMLStreamException

Specified by:

finishSpace in class XmlScanner

Throws:

XMLStreamException

finishCoalescedText

protected final void finishCoalescedText()
                                  throws XMLStreamException

Method that gets called after a primary text segment (of type CHARACTERS or CDATA, not applicable to SPACE) has been read in text buffer. Method has to see if the following event would be textual as well, and if so, read it (and any other following textual segments).

Throws:

XMLStreamException

finishCoalescedCData

protected final void finishCoalescedCData()
                                   throws XMLStreamException

Throws:

XMLStreamException

finishCoalescedCharacters

protected final void finishCoalescedCharacters()
                                        throws XMLStreamException

Throws:

XMLStreamException

skipCoalescedText

protected final boolean skipCoalescedText()
                                   throws XMLStreamException

Method that gets called after a primary text segment (of type CHARACTERS or CDATA, not applicable to SPACE) has been skipped. Method has to see if the following event would be textual as well, and if so, skip it (and any other following textual segments).

Specified by:

skipCoalescedText in class XmlScanner

Returns:

True if we encountered an unexpandable entity

Throws:

XMLStreamException

skipComment

protected final void skipComment()
                          throws XMLStreamException

Specified by:

skipComment in class XmlScanner

Throws:

XMLStreamException

skipPI

protected final void skipPI()
                     throws XMLStreamException

Specified by:

skipPI in class XmlScanner

Throws:

XMLStreamException

skipCharacters

protected final boolean skipCharacters()
                                throws XMLStreamException

Specified by:

skipCharacters in class XmlScanner

Returns:

True, if an unexpanded entity was encountered (and is now pending)

Throws:

XMLStreamException

skipCData

protected final void skipCData()
                        throws XMLStreamException

Specified by:

skipCData in class XmlScanner

Throws:

XMLStreamException

skipSpace

protected final void skipSpace()
                        throws XMLStreamException

Specified by:

skipSpace in class XmlScanner

Throws:

XMLStreamException

skipInternalWs

protected char skipInternalWs(boolean reqd,
                              String msg)
                       throws XMLStreamException

Returns:

First byte following skipped white space

Throws:

XMLStreamException

checkInTreeIndentation

protected final int checkInTreeIndentation(char c)
                                    throws XMLStreamException

Note: consequtive white space is only considered indentation, if the following token seems like a tag (start/end). This so that if a CDATA section follows, it can be coalesced in coalescing mode. Although we could check if coalescing mode is enabled, this should seldom have significant effect either way, so it removes one possible source of problems in coalescing mode.

Returns:

-1, if indentation was handled; offset in the output buffer, if not

Throws:

XMLStreamException

checkPrologIndentation

protected final int checkPrologIndentation(char c)
                                    throws XMLStreamException

Returns:

-1, if indentation was handled; offset in the output buffer, if not

Throws:

XMLStreamException

parsePName

protected PName parsePName(char c)
                    throws XMLStreamException

Throws:

XMLStreamException

addPName

protected final PName addPName(char[] nameBuffer,
                               int nameLen,
                               int hash)
                        throws XMLStreamException

Throws:

XMLStreamException

parsePublicId

protected String parsePublicId(char quoteChar)
                        throws XMLStreamException

Throws:

XMLStreamException

parseSystemId

protected String parseSystemId(char quoteChar)
                        throws XMLStreamException

Throws:

XMLStreamException

getCurrentLocation

public org.codehaus.stax2.XMLStreamLocation2 getCurrentLocation()

Specified by:

getCurrentLocation in class XmlScanner

Returns:

Current input location

getCurrentLineNr

public int getCurrentLineNr()

Specified by:

getCurrentLineNr in class XmlScanner

getCurrentColumnNr

public int getCurrentColumnNr()

Specified by:

getCurrentColumnNr in class XmlScanner

markLF

protected final void markLF(int offset)

markLF

protected final void markLF()

loadMore

protected final boolean loadMore()
                          throws XMLStreamException

Specified by:

loadMore in class XmlScanner

Throws:

XMLStreamException

loadOne

protected final char loadOne()
                      throws XMLStreamException

Throws:

XMLStreamException

loadOne

protected final char loadOne(int type)
                      throws XMLStreamException

Throws:

XMLStreamException

loadAndRetain

protected final boolean loadAndRetain(int nrOfChars)
                               throws XMLStreamException

Throws:

XMLStreamException