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< td align = "right" valign = "center" > < img src = "logo32.png" align = "right" width = "64" height = "32" border = "0" > < / td > < / tr > < / table > < h1 align = center > TQXmlReader Class Reference< br > < small > [< a href = "xml.html" > XML module< / a > ]< / small > < / h1 >
< p > The TQXmlReader class provides an interface for XML readers (i.e.
parsers).
< a href = "#details" > More...< / a >
< p > All the functions in this class are < a href = "threads.html#reentrant" > reentrant< / a > when TQt is built with thread support.< / p >
< p > < tt > #include < < a href = "tqxml-h.html" > tqxml.h< / a > > < / tt >
< p > Inherited by < a href = "tqxmlsimplereader.html" > TQXmlSimpleReader< / a > .
< p > < a href = "tqxmlreader-members.html" > List of all member functions.< / a >
< h2 > Public Members< / h2 >
< ul >
< li class = fn > virtual bool < a href = "#feature" > < b > feature< / b > < / a > ( const TQString & name, bool * ok = 0 ) const = 0< / li >
< li class = fn > virtual void < a href = "#setFeature" > < b > setFeature< / b > < / a > ( const TQString & name, bool value ) = 0< / li >
< li class = fn > virtual bool < a href = "#hasFeature" > < b > hasFeature< / b > < / a > ( const TQString & name ) const = 0< / li >
< li class = fn > virtual void * < a href = "#property" > < b > property< / b > < / a > ( const TQString & name, bool * ok = 0 ) const = 0< / li >
< li class = fn > virtual void < a href = "#setProperty" > < b > setProperty< / b > < / a > ( const TQString & name, void * value ) = 0< / li >
< li class = fn > virtual bool < a href = "#hasProperty" > < b > hasProperty< / b > < / a > ( const TQString & name ) const = 0< / li >
< li class = fn > virtual void < a href = "#setEntityResolver" > < b > setEntityResolver< / b > < / a > ( TQXmlEntityResolver * handler ) = 0< / li >
< li class = fn > virtual TQXmlEntityResolver * < a href = "#entityResolver" > < b > entityResolver< / b > < / a > () const = 0< / li >
< li class = fn > virtual void < a href = "#setDTDHandler" > < b > setDTDHandler< / b > < / a > ( TQXmlDTDHandler * handler ) = 0< / li >
< li class = fn > virtual TQXmlDTDHandler * < a href = "#DTDHandler" > < b > DTDHandler< / b > < / a > () const = 0< / li >
< li class = fn > virtual void < a href = "#setContentHandler" > < b > setContentHandler< / b > < / a > ( TQXmlContentHandler * handler ) = 0< / li >
< li class = fn > virtual TQXmlContentHandler * < a href = "#contentHandler" > < b > contentHandler< / b > < / a > () const = 0< / li >
< li class = fn > virtual void < a href = "#setErrorHandler" > < b > setErrorHandler< / b > < / a > ( TQXmlErrorHandler * handler ) = 0< / li >
< li class = fn > virtual TQXmlErrorHandler * < a href = "#errorHandler" > < b > errorHandler< / b > < / a > () const = 0< / li >
< li class = fn > virtual void < a href = "#setLexicalHandler" > < b > setLexicalHandler< / b > < / a > ( TQXmlLexicalHandler * handler ) = 0< / li >
< li class = fn > virtual TQXmlLexicalHandler * < a href = "#lexicalHandler" > < b > lexicalHandler< / b > < / a > () const = 0< / li >
< li class = fn > virtual void < a href = "#setDeclHandler" > < b > setDeclHandler< / b > < / a > ( TQXmlDeclHandler * handler ) = 0< / li >
< li class = fn > virtual TQXmlDeclHandler * < a href = "#declHandler" > < b > declHandler< / b > < / a > () const = 0< / li >
< li class = fn > virtual bool parse ( const TQXmlInputSource & input ) = 0 < em > (obsolete)< / em > < / li >
< li class = fn > virtual bool < a href = "#parse" > < b > parse< / b > < / a > ( const TQXmlInputSource * input ) = 0< / li >
< / ul >
< hr > < a name = "details" > < / a > < h2 > Detailed Description< / h2 >
The TQXmlReader class provides an interface for XML readers (i.e.
parsers).
< p >
< p > This abstract class provides an interface for all of TQt's XML
readers. Currently there is only one implementation of a reader
included in TQt's XML module: < a href = "tqxmlsimplereader.html" > TQXmlSimpleReader< / a > . In future releases
there might be more readers with different properties available
(e.g. a validating parser).
< p > The design of the XML classes follows the < a href = "http://www.saxproject.org/" > SAX2 Java interface< / a > , with
the names adapted to fit TQt naming conventions. It should be very
easy for anybody who has worked with SAX2 to get started with the
TQt XML classes.
< p > All readers use the class < a href = "tqxmlinputsource.html" > TQXmlInputSource< / a > to read the input
document. Since you are normally interested in particular content
in the XML document, the reader reports the content through
special handler classes (< a href = "tqxmldtdhandler.html" > TQXmlDTDHandler< / a > , < a href = "tqxmldeclhandler.html" > TQXmlDeclHandler< / a > ,
< a href = "tqxmlcontenthandler.html" > TQXmlContentHandler< / a > , < a href = "tqxmlentityresolver.html" > TQXmlEntityResolver< / a > , < a href = "tqxmlerrorhandler.html" > TQXmlErrorHandler< / a > and
< a href = "tqxmllexicalhandler.html" > TQXmlLexicalHandler< / a > ), which you must subclass, if you want to
process the contents.
< p > Since the handler classes only describe interfaces you must
implement all the functions. We provide the < a href = "tqxmldefaulthandler.html" > TQXmlDefaultHandler< / a >
class to make this easier: it implements a default behaviour (do
nothing) for all functions, so you can subclass it and just
implement the functions you are interested in.
< p > Features and properties of the reader can be set with < a href = "#setFeature" > setFeature< / a > ()
and < a href = "#setProperty" > setProperty< / a > () respectively. You can set the reader to use your
own subclasses with < a href = "#setEntityResolver" > setEntityResolver< / a > (), < a href = "#setDTDHandler" > setDTDHandler< / a > (),
< a href = "#setContentHandler" > setContentHandler< / a > (), < a href = "#setErrorHandler" > setErrorHandler< / a > (), < a href = "#setLexicalHandler" > setLexicalHandler< / a > () and
< a href = "#setDeclHandler" > setDeclHandler< / a > (). The parse itself is started with a call to
< a href = "#parse" > parse< / a > ().
< p > < p > See also < a href = "tqxmlsimplereader.html" > TQXmlSimpleReader< / a > and < a href = "xml-tools.html" > XML< / a > .
< hr > < h2 > Member Function Documentation< / h2 >
< h3 class = fn > < a href = "tqxmldtdhandler.html" > TQXmlDTDHandler< / a > * < a name = "DTDHandler" > < / a > TQXmlReader::DTDHandler () const< tt > [pure virtual]< / tt >
< / h3 >
< p > Returns the DTD handler or 0 if none was set.
< p > < p > See also < a href = "#setDTDHandler" > setDTDHandler< / a > ().
< h3 class = fn > < a href = "tqxmlcontenthandler.html" > TQXmlContentHandler< / a > * < a name = "contentHandler" > < / a > TQXmlReader::contentHandler () const< tt > [pure virtual]< / tt >
< / h3 >
< p > Returns the content handler or 0 if none was set.
< p > < p > See also < a href = "#setContentHandler" > setContentHandler< / a > ().
< h3 class = fn > < a href = "tqxmldeclhandler.html" > TQXmlDeclHandler< / a > * < a name = "declHandler" > < / a > TQXmlReader::declHandler () const< tt > [pure virtual]< / tt >
< / h3 >
< p > Returns the declaration handler or 0 if none was set.
< p > < p > See also < a href = "#setDeclHandler" > setDeclHandler< / a > ().
< h3 class = fn > < a href = "tqxmlentityresolver.html" > TQXmlEntityResolver< / a > * < a name = "entityResolver" > < / a > TQXmlReader::entityResolver () const< tt > [pure virtual]< / tt >
< / h3 >
< p > Returns the entity resolver or 0 if none was set.
< p > < p > See also < a href = "#setEntityResolver" > setEntityResolver< / a > ().
< h3 class = fn > < a href = "tqxmlerrorhandler.html" > TQXmlErrorHandler< / a > * < a name = "errorHandler" > < / a > TQXmlReader::errorHandler () const< tt > [pure virtual]< / tt >
< / h3 >
< p > Returns the error handler or 0 if none is set.
< p > < p > See also < a href = "#setErrorHandler" > setErrorHandler< / a > ().
< h3 class = fn > bool < a name = "feature" > < / a > TQXmlReader::feature ( const < a href = "tqstring.html" > TQString< / a > & name, bool * ok = 0 ) const< tt > [pure virtual]< / tt >
< / h3 >
< p > If the reader has the feature called < em > name< / em > , the feature's value
is returned. If no such feature exists the return value is
undefined.
< p > If < em > ok< / em > is not 0: < em > *ok< / em > is set to TRUE if the reader has the
feature called < em > name< / em > ; otherwise < em > *ok< / em > is set to FALSE.
< p > < p > See also < a href = "#setFeature" > setFeature< / a > () and < a href = "#hasFeature" > hasFeature< / a > ().
< h3 class = fn > bool < a name = "hasFeature" > < / a > TQXmlReader::hasFeature ( const < a href = "tqstring.html" > TQString< / a > & name ) const< tt > [pure virtual]< / tt >
< / h3 >
< p > Returns < tt > TRUE< / tt > if the reader has the feature called < em > name< / em > ;
otherwise returns FALSE.
< p > < p > See also < a href = "#feature" > feature< / a > () and < a href = "#setFeature" > setFeature< / a > ().
< h3 class = fn > bool < a name = "hasProperty" > < / a > TQXmlReader::hasProperty ( const < a href = "tqstring.html" > TQString< / a > & name ) const< tt > [pure virtual]< / tt >
< / h3 >
< p > Returns TRUE if the reader has the property < em > name< / em > ; otherwise
returns FALSE.
< p > < p > See also < a href = "#property" > property< / a > () and < a href = "#setProperty" > setProperty< / a > ().
< h3 class = fn > < a href = "tqxmllexicalhandler.html" > TQXmlLexicalHandler< / a > * < a name = "lexicalHandler" > < / a > TQXmlReader::lexicalHandler () const< tt > [pure virtual]< / tt >
< / h3 >
< p > Returns the lexical handler or 0 if none was set.
< p > < p > See also < a href = "#setLexicalHandler" > setLexicalHandler< / a > ().
< h3 class = fn > bool < a name = "parse" > < / a > TQXmlReader::parse ( const < a href = "tqxmlinputsource.html" > TQXmlInputSource< / a > * input )< tt > [pure virtual]< / tt >
< / h3 >
< p > Reads an XML document from < em > input< / em > and parses it. Returns TRUE if
the parsing was successful; otherwise returns FALSE.
< p > Example: < a href = "xml-sax-walkthrough.html#x2139" > xml/tagreader/tagreader.cpp< / a > .
< h3 class = fn > bool < a name = "parse-2" > < / a > TQXmlReader::parse ( const < a href = "tqxmlinputsource.html" > TQXmlInputSource< / a > & input )< tt > [pure virtual]< / tt >
< / h3 >
< p > < b > This function is obsolete.< / b > It is provided to keep old source working. We strongly advise against using it in new code.
< p >
< h3 class = fn > void * < a name = "property" > < / a > TQXmlReader::property ( const < a href = "tqstring.html" > TQString< / a > & name, bool * ok = 0 ) const< tt > [pure virtual]< / tt >
< / h3 >
< p > If the reader has the property < em > name< / em > , this function returns the
value of the property; otherwise the return value is undefined.
< p > If < em > ok< / em > is not 0: if the reader has the < em > name< / em > property < em > *ok< / em >
is set to TRUE; otherwise < em > *ok< / em > is set to FALSE.
< p > < p > See also < a href = "#setProperty" > setProperty< / a > () and < a href = "#hasProperty" > hasProperty< / a > ().
< h3 class = fn > void < a name = "setContentHandler" > < / a > TQXmlReader::setContentHandler ( < a href = "tqxmlcontenthandler.html" > TQXmlContentHandler< / a > * handler )< tt > [pure virtual]< / tt >
< / h3 >
< p > Sets the content handler to < em > handler< / em > .
< p > < p > See also < a href = "#contentHandler" > contentHandler< / a > ().
< p > Example: < a href = "xml-sax-walkthrough.html#x2140" > xml/tagreader/tagreader.cpp< / a > .
< h3 class = fn > void < a name = "setDTDHandler" > < / a > TQXmlReader::setDTDHandler ( < a href = "tqxmldtdhandler.html" > TQXmlDTDHandler< / a > * handler )< tt > [pure virtual]< / tt >
< / h3 >
< p > Sets the DTD handler to < em > handler< / em > .
< p > < p > See also < a href = "#DTDHandler" > DTDHandler< / a > ().
< h3 class = fn > void < a name = "setDeclHandler" > < / a > TQXmlReader::setDeclHandler ( < a href = "tqxmldeclhandler.html" > TQXmlDeclHandler< / a > * handler )< tt > [pure virtual]< / tt >
< / h3 >
< p > Sets the declaration handler to < em > handler< / em > .
< p > < p > See also < a href = "#declHandler" > declHandler< / a > ().
< h3 class = fn > void < a name = "setEntityResolver" > < / a > TQXmlReader::setEntityResolver ( < a href = "tqxmlentityresolver.html" > TQXmlEntityResolver< / a > * handler )< tt > [pure virtual]< / tt >
< / h3 >
< p > Sets the entity resolver to < em > handler< / em > .
< p > < p > See also < a href = "#entityResolver" > entityResolver< / a > ().
< h3 class = fn > void < a name = "setErrorHandler" > < / a > TQXmlReader::setErrorHandler ( < a href = "tqxmlerrorhandler.html" > TQXmlErrorHandler< / a > * handler )< tt > [pure virtual]< / tt >
< / h3 >
< p > Sets the error handler to < em > handler< / em > . Clears the error handler if
< em > handler< / em > is 0.
< p > < p > See also < a href = "#errorHandler" > errorHandler< / a > ().
< h3 class = fn > void < a name = "setFeature" > < / a > TQXmlReader::setFeature ( const < a href = "tqstring.html" > TQString< / a > & name, bool value )< tt > [pure virtual]< / tt >
< / h3 >
< p > Sets the feature called < em > name< / em > to the given < em > value< / em > . If the
reader doesn't have the feature nothing happens.
< p > < p > See also < a href = "#feature" > feature< / a > () and < a href = "#hasFeature" > hasFeature< / a > ().
< p > Reimplemented in < a href = "tqxmlsimplereader.html#setFeature" > TQXmlSimpleReader< / a > .
< h3 class = fn > void < a name = "setLexicalHandler" > < / a > TQXmlReader::setLexicalHandler ( < a href = "tqxmllexicalhandler.html" > TQXmlLexicalHandler< / a > * handler )< tt > [pure virtual]< / tt >
< / h3 >
< p > Sets the lexical handler to < em > handler< / em > .
< p > < p > See also < a href = "#lexicalHandler" > lexicalHandler< / a > ().
< h3 class = fn > void < a name = "setProperty" > < / a > TQXmlReader::setProperty ( const < a href = "tqstring.html" > TQString< / a > & name, void * value )< tt > [pure virtual]< / tt >
< / h3 >
< p > Sets the property < em > name< / em > to < em > value< / em > . If the reader doesn't have
the property nothing happens.
< p > < p > See also < a href = "#property" > property< / a > () and < a href = "#hasProperty" > hasProperty< / a > ().
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