com.fasterxml.aalto.in
Class ByteBasedScanner

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

All Implemented Interfaces:

XmlConsts, NamespaceContext, XMLStreamConstants

Direct Known Subclasses:

AsyncByteScanner, StreamScanner

public abstract class ByteBasedScanner
extends XmlScanner

Intermediate base class used by different byte-backed scanners. Specifically, used as a base by both blocking (stream) and non-blocking (async) byte-based scanners (as opposed to Writer-backed, ie. character-based scanners)

Field Summary

protected XmlCharTypes	_charTypes This is a simple container object that is used to access the decoding tables for characters.
protected int	_inputEnd Pointer to the first byte after the end of valid content.
protected int	_inputPtr Pointer to the next unread byte in the input buffer.
protected int	_pastBytes Number of bytes that were read and processed before the contents of the current buffer; used for calculating absolute offsets.
protected int[]	_quadBuffer This buffer is used for name parsing.
protected int	_rowStartOffset Offset used to calculate the column value given current input buffer pointer.
protected ByteBasedPNameTable	_symbols For now, symbol table contains prefixed names.
protected int	_tmpChar Storage location for a single character that can not be easily pushed back (for example, multi-byte char; or char entity expansion).
protected static byte	BYTE_a
protected static byte	BYTE_A
protected static byte	BYTE_AMP
protected static byte	BYTE_APOS
protected static byte	BYTE_C
protected static byte	BYTE_CR
protected static byte	BYTE_D
protected static byte	BYTE_EQ
protected static byte	BYTE_EXCL
protected static byte	BYTE_g
protected static byte	BYTE_GT
protected static byte	BYTE_HASH
protected static byte	BYTE_HYPHEN
protected static byte	BYTE_l
protected static byte	BYTE_LBRACKET
protected static byte	BYTE_LF
protected static byte	BYTE_LT
protected static byte	BYTE_m
protected static byte	BYTE_NULL
protected static byte	BYTE_o
protected static byte	BYTE_p
protected static byte	BYTE_P
protected static byte	BYTE_q
protected static byte	BYTE_QMARK
protected static byte	BYTE_QUOT
protected static byte	BYTE_RBRACKET
protected static byte	BYTE_s
protected static byte	BYTE_S
protected static byte	BYTE_SEMICOLON
protected static byte	BYTE_SLASH
protected static byte	BYTE_SPACE
protected static byte	BYTE_t
protected static byte	BYTE_T
protected static byte	BYTE_TAB
protected static byte	BYTE_u
protected static byte	BYTE_x

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

protected

ByteBasedScanner(ReaderConfig cfg)

Method Summary

protected abstract void	_closeSource()
protected void	_releaseBuffers()
protected abstract PName	addPName(int hash, int[] quads, int qlen, int lastQuadBytes)
protected PName	addUtfPName(XmlCharTypes charTypes, int hash, int[] quads, int qlen, int lastQuadBytes) Conceptually, this method really does NOT belong here.
protected abstract int	decodeCharForError(byte b) Method called by methods when encountering a byte that can not be part of a valid character in the current context.
int	getCurrentColumnNr()
int	getCurrentLineNr()
org.codehaus.stax2.XMLStreamLocation2	getCurrentLocation()
protected void	markLF()
protected void	markLF(int offset)
protected void	reportInvalidInitial(int mask)
protected void	reportInvalidOther(int mask)

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

bindName, bindNs, checkImmutableBinding, close, decodeAttrBinaryValue, decodeAttrValue, decodeAttrValues, decodeElements, findAttrIndex, findOrCreateBinding, finishCData, finishCharacters, finishComment, finishDTD, finishPI, finishSpace, 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, loadMore, loadMoreGuaranteed, loadMoreGuaranteed, nextFromProlog, nextFromTree, reportDoubleHyphenInComments, reportDuplicateNsDecl, reportEntityOverflow, reportEofInName, reportIllegalCDataEnd, reportIllegalNsDecl, reportIllegalNsDecl, reportInputProblem, reportInvalidNameChar, reportInvalidNsIndex, reportInvalidXmlChar, reportMissingPISpace, reportMultipleColonsInName, reportPrologProblem, reportPrologUnexpChar, reportTreeUnexpChar, reportUnboundPrefix, reportUnexpandedEntityInAttr, reportUnexpectedEndTag, resetForDecoding, skipCData, skipCharacters, skipCoalescedText, skipComment, skipPI, skipSpace, 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

BYTE_NULL

protected static final byte BYTE_NULL

See Also:

Constant Field Values

BYTE_SPACE

protected static final byte BYTE_SPACE

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Constant Field Values

BYTE_LF

protected static final byte BYTE_LF

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Constant Field Values

BYTE_CR

protected static final byte BYTE_CR

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BYTE_TAB

protected static final byte BYTE_TAB

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BYTE_LT

protected static final byte BYTE_LT

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Constant Field Values

BYTE_GT

protected static final byte BYTE_GT

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Constant Field Values

BYTE_AMP

protected static final byte BYTE_AMP

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Constant Field Values

BYTE_HASH

protected static final byte BYTE_HASH

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Constant Field Values

BYTE_EXCL

protected static final byte BYTE_EXCL

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Constant Field Values

BYTE_HYPHEN

protected static final byte BYTE_HYPHEN

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Constant Field Values

BYTE_QMARK

protected static final byte BYTE_QMARK

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Constant Field Values

BYTE_SLASH

protected static final byte BYTE_SLASH

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Constant Field Values

BYTE_EQ

protected static final byte BYTE_EQ

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Constant Field Values

BYTE_QUOT

protected static final byte BYTE_QUOT

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Constant Field Values

BYTE_APOS

protected static final byte BYTE_APOS

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BYTE_LBRACKET

protected static final byte BYTE_LBRACKET

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BYTE_RBRACKET

protected static final byte BYTE_RBRACKET

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Constant Field Values

BYTE_SEMICOLON

protected static final byte BYTE_SEMICOLON

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Constant Field Values

BYTE_a

protected static final byte BYTE_a

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Constant Field Values

BYTE_g

protected static final byte BYTE_g

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Constant Field Values

BYTE_l

protected static final byte BYTE_l

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Constant Field Values

BYTE_m

protected static final byte BYTE_m

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BYTE_o

protected static final byte BYTE_o

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BYTE_p

protected static final byte BYTE_p

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BYTE_q

protected static final byte BYTE_q

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BYTE_s

protected static final byte BYTE_s

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BYTE_t

protected static final byte BYTE_t

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BYTE_u

protected static final byte BYTE_u

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BYTE_x

protected static final byte BYTE_x

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BYTE_A

protected static final byte BYTE_A

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BYTE_C

protected static final byte BYTE_C

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BYTE_D

protected static final byte BYTE_D

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BYTE_P

protected static final byte BYTE_P

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BYTE_S

protected static final byte BYTE_S

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BYTE_T

protected static final byte BYTE_T

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Constant Field Values

_inputPtr

protected int _inputPtr

Pointer to the next unread byte in the input buffer.

_inputEnd

protected int _inputEnd

Pointer to the first byte after the end of valid content. This may point beyond of the physical buffer array.

_quadBuffer

protected int[] _quadBuffer

This buffer is used for name parsing. Will be expanded if/as needed; 32 ints can hold names 128 ascii chars long.

_symbols

protected final ByteBasedPNameTable _symbols

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

_charTypes

protected final XmlCharTypes _charTypes

This is a simple container object that is used to access the decoding tables for characters. Indirection is needed since we actually support multiple utf-8 compatible encodings, not just utf-8 itself.

_pastBytes

protected int _pastBytes

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

_rowStartOffset

protected int _rowStartOffset

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.

_tmpChar

protected int _tmpChar

Storage location for a single character that can not be easily pushed back (for example, multi-byte char; or char entity expansion). Negative, if from entity expansion; positive if a singular char.

Constructor Detail

ByteBasedScanner

protected ByteBasedScanner(ReaderConfig cfg)

Method Detail

_releaseBuffers

protected void _releaseBuffers()

Overrides:

_releaseBuffers in class XmlScanner

_closeSource

protected abstract void _closeSource()
                              throws IOException

Specified by:

_closeSource in class XmlScanner

Throws:

IOException

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()

decodeCharForError

protected abstract int decodeCharForError(byte b)
                                   throws XMLStreamException

Method called by methods when encountering a byte that can not be part of a valid character in the current context. Should return the actual decoded character for error reporting purposes.

Throws:

XMLStreamException

addPName

protected abstract PName addPName(int hash,
                                  int[] quads,
                                  int qlen,
                                  int lastQuadBytes)
                           throws XMLStreamException

Throws:

XMLStreamException

addUtfPName

protected final PName addUtfPName(XmlCharTypes charTypes,
                                  int hash,
                                  int[] quads,
                                  int qlen,
                                  int lastQuadBytes)
                           throws XMLStreamException

Conceptually, this method really does NOT belong here. However, currently it is quite hard to refactor it, so it'll have to stay here until better place is found

Throws:

XMLStreamException

reportInvalidInitial

protected void reportInvalidInitial(int mask)
                             throws XMLStreamException

Throws:

XMLStreamException

reportInvalidOther

protected void reportInvalidOther(int mask)
                           throws XMLStreamException

Throws:

XMLStreamException