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Posted to c-dev@xerces.apache.org by David --- <da...@yahoo.fr> on 2004/03/16 00:17:25 UTC
HandlerBase problem with SAXXMLREADER reader
Hello,
Going through the doc i noticed that EndElement
requires the implementation of a handlerbase.
However when I use a handlerbase in my code in got an
error while using SAX2XMLREADER. It complains that
setContentHandler requires a contenthandler. However
my XMLhandler is a HandlerBase.
If I use DefaultHandler instead of HandleBase in Xml.h
it works but then the endElement method is not
available. Can anybody help??
Error at execution:
david@home:XmlXercesFactory>make
g++ Xml.cpp -c -o Xml.o
g++ SaxParser.cpp -c -o SaxParser.o
SaxParser.cpp: In member function `virtual void
SaxParser::ParseFile(char*)':
SaxParser.cpp:58: error: no matching function for call
to `
xercesc_2_4::SAX2XMLReader::setContentHandler(Xml*)'
/usr/local/include/xercesc/sax2/SAX2XMLReader.hpp:304:
error: candidates are:
virtual void
xercesc_2_4::SAX2XMLReader::setContentHandler(xercesc_2_4::ContentHandler*)
make: *** [SaxParser.o] Error 1
>
#FILES#
#Xml.h
class xml : public HandlerBase {
public:
Xml()
virtual ~Xml()
###Here all the handler methods
}
#
in SaxParser.cpp
void SaxParser::ParseFile(char *xmlFile)
{
std::cout <<"Trying to parse "<< xmlFile << "..."
<< std::endl;
Xml handler;
c_parser->setErrorHandler(&handler);
c_parser->setContentHandler(&handler);
try {
c_parser->parse(xmlFile);
}
catch (XMLException &e){
std::cout << "Error parsing file "<<
Error(e.getMessage()) << std::endl;
exit (-1);
}
....
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Re: SV:Re: SV:HandlerBase problem with SAXXMLREADER reader
Posted by David --- <da...@yahoo.fr>.
Looking at your code I realized that my endElement
method was badly implemented. Now it works like yours
with DefaultHandler.....
thanks ,
david
--- Gröndal_Daniel <da...@rfv.sfa.se> a
écrit : > Hi!
>
> Well, that's more or less exactly what I want to do
> as well. Since I use
> SAX2XMLReader my handlerclass inherits from
> DefaultHandler. DefaultHandler is
> used with the SAX2-api and HandlerBase is used with
> SAX as far as I know from
> the docs. Anyway, they both provide an empty
> implementation for handlers.
>
> My handler class looks something like this:
>
> class TestAppHandler : public DefaultHandler
> {
> public:
> TestAppHandler ();
> virtual ~TestAppHandler();
> //
> // SAX-functions (three over loaded functions. The
> others are empty
> (implemented in DefaultHandler))
> //
> void startElement(const XMLCh* const uri,
> const XMLCh* const localname,
> const XMLCh* const qname,
> const Attributes& attributes);
> void endElement(const XMLCh* const uri,
> const XMLCh* const localname,
> const XMLCh* const qname);
> void characters(const XMLCh *const chars, const
> unsigned int length);
>
> private:
>
> const XMLCh* functionString;
> const XMLCh* argString;
>
> };
>
> and the implementation of endElement() looks like:
>
> void TestAppHandler::endElement(const XMLCh* const
> uri,
> const XMLCh* const localname,
> const XMLCh* const qname)
> {
>
> std::cout << "TestAppHandler::endElement(): " <<
> XMLString::transcode(localname) << std::endl;
>
> if (XMLString::equals(localname, functionString))
> {
> //
> // do something (functionsString is defined in
> constructor)
> //
> }
>
> if (XMLString::equals(localname, argString)) {
> //
> // do something else (argString is defined in
> constructor)
> //
> }
> }
>
> I use to parse a file with function names and
> arguments and then call the
> correct function with the supplied arguments (for
> automatic regression tests).
>
> The endElement() really works fine. Whenever an
> </argument> is encountered an
> argument is stored and when </function> is
> encountered the function is called
> with all arguments.
>
> What I am trying to say is that endElement() should
> be available in
> DefaultHandler as well. There must be something else
> that's wrong.
>
> //daniel
>
>
> David --- (2004-03-16 10:59):
> >Hi daniel,
> >For instance I'm using xerces_2_4.
> >
> >You are using DefaultHandler and I'm trying to use
> >handlerbase. The reason for that is the following
> >method EndElement. It doesn't display anything in
> my
> >case. However start element display properly all
> the
> >elements.
> >My idea is only to display some elements, not all
> of
> >the elements that are found in the file that's why
> i
> >want to modify endElement.
> >If I use DefaultHandler it runs but still
> endElement
> >is not displayed. Did you try to display the
> >endElement like below?
> >
> >void Xml::endElement(const XMLElementDecl &
> elemDecl,
> >const unsigned int urlId, const bool
> isRoot, const
> >XMLCh *const elemPrefix)
> >{
> >
> > std::cout << "Found end element:" <<
> >XMLString::transcode(elemPrefix) << std::endl;
> >
> >}
> >
> >
> >--- Gröndal_Daniel <da...@rfv.sfa.se> a
> écrit
> >: > Hi!
> >>
> >> I'm doing roughly the same thing as you are:
> >>
> >> ----------------------------------------------
> >> class TestAppHandler : public DefaultHandler
> >> {
> >> public:
> >> TestAppHandler ();
> >> virtual ~TestAppHandler();
> >> void startElement(const XMLCh* const uri,
> >> const XMLCh* const localname,
> >> const XMLCh* const qname,
> >> const Attributes& attributes);
> >> void endElement(const XMLCh* const uri,
> >> const XMLCh* const localname,
> >> const XMLCh* const qname);
> >> void characters(const XMLCh *const chars, const
> >> unsigned int length);
> >> -----------------------------------------------
> >>
> >> I have no problem over loading the function
> >> endElement() and then to register
> >> an object of type TestAppHandler as a
> >> contenthandler.
> >>
> >> ---------------------------------------------
> >> parser = XMLReaderFactory::createXMLReader();
> >> TestAppHandler handler;
> >> parser->setContentHandler(&handler);
> >> --------------------------------------------
> >>
> >> I use Xerces 2.3.0 if that should matter?
> >>
> >> //daniel
> >>
> >>
> >>
> >> David --- (2004-03-16 00:17):
> >> >Hello,
> >> >Going through the doc i noticed that EndElement
> >> >requires the implementation of a handlerbase.
> >> >However when I use a handlerbase in my code in
> got
> >> an
> >> >error while using SAX2XMLREADER. It complains
> that
> >> >setContentHandler requires a contenthandler.
> >> However
> >> >my XMLhandler is a HandlerBase.
> >> >If I use DefaultHandler instead of HandleBase in
> >> Xml.h
> >> >it works but then the endElement method is not
> >> >available. Can anybody help??
> >> >
> >> >Error at execution:
> >> >
> >> >david@home:XmlXercesFactory>make
> >> >g++ Xml.cpp -c -o Xml.o
> >> >g++ SaxParser.cpp -c -o SaxParser.o
> >> >SaxParser.cpp: In member function `virtual void
> >> >SaxParser::ParseFile(char*)':
> >> >SaxParser.cpp:58: error: no matching function
> for
> >> call
> >> >to `
> >> >
> >>
>
>>xercesc_2_4::SAX2XMLReader::setContentHandler(Xml*)'
> >>
>
>>/usr/local/include/xercesc/sax2/SAX2XMLReader.hpp:304:
> >> >error: candidates are:
> >> > virtual void
> >> >
> >>
>
>>xercesc_2_4::SAX2XMLReader::setContentHandler(xercesc_2_4::ContentHandler*)
> >> >make: *** [SaxParser.o] Error 1
> >> >>
> >> >
>
=== message truncated ===
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Re: SV:Re: SV:HandlerBase problem with SAXXMLREADER reader
Posted by da...@us.ibm.com.
Daniel,
Can you please turn off requesting a return receipt when you post to this
list!
Thanks!
Dave
|---------+--------------------------->
| | "Gröndal Daniel"|
| | <daniel.grondal@|
| | rfv.sfa.se> |
| | |
| | 03/16/2004 02:15|
| | AM |
| | Please respond |
| | to xerces-c-dev |
|---------+--------------------------->
>-------------------------------------------------------------------------------------------------------------------------------------------------|
| |
| To: xerces-c-dev@xml.apache.org |
| cc: (bcc: David N Bertoni/Cambridge/IBM) |
| Subject: SV:Re: SV:HandlerBase problem with SAXXMLREADER reader |
>-------------------------------------------------------------------------------------------------------------------------------------------------|
Hi!
Well, that's more or less exactly what I want to do as well. Since I use
SAX2XMLReader my handlerclass inherits from DefaultHandler. DefaultHandler
is
used with the SAX2-api and HandlerBase is used with SAX as far as I know
from
the docs. Anyway, they both provide an empty implementation for handlers.
...
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SV:Re: SV:HandlerBase problem with SAXXMLREADER
reader
Posted by Gröndal Daniel <da...@rfv.sfa.se>.
Hi!
Well, that's more or less exactly what I want to do as well. Since I use
SAX2XMLReader my handlerclass inherits from DefaultHandler. DefaultHandler is
used with the SAX2-api and HandlerBase is used with SAX as far as I know from
the docs. Anyway, they both provide an empty implementation for handlers.
My handler class looks something like this:
class TestAppHandler : public DefaultHandler
{
public:
TestAppHandler ();
virtual ~TestAppHandler();
//
// SAX-functions (three over loaded functions. The others are empty
(implemented in DefaultHandler))
//
void startElement(const XMLCh* const uri,
const XMLCh* const localname,
const XMLCh* const qname,
const Attributes& attributes);
void endElement(const XMLCh* const uri,
const XMLCh* const localname,
const XMLCh* const qname);
void characters(const XMLCh *const chars, const unsigned int length);
private:
const XMLCh* functionString;
const XMLCh* argString;
};
and the implementation of endElement() looks like:
void TestAppHandler::endElement(const XMLCh* const uri,
const XMLCh* const localname,
const XMLCh* const qname)
{
std::cout << "TestAppHandler::endElement(): " <<
XMLString::transcode(localname) << std::endl;
if (XMLString::equals(localname, functionString)) {
//
// do something (functionsString is defined in constructor)
//
}
if (XMLString::equals(localname, argString)) {
//
// do something else (argString is defined in constructor)
//
}
}
I use to parse a file with function names and arguments and then call the
correct function with the supplied arguments (for automatic regression tests).
The endElement() really works fine. Whenever an </argument> is encountered an
argument is stored and when </function> is encountered the function is called
with all arguments.
What I am trying to say is that endElement() should be available in
DefaultHandler as well. There must be something else that's wrong.
//daniel
David --- (2004-03-16 10:59):
>Hi daniel,
>For instance I'm using xerces_2_4.
>
>You are using DefaultHandler and I'm trying to use
>handlerbase. The reason for that is the following
>method EndElement. It doesn't display anything in my
>case. However start element display properly all the
>elements.
>My idea is only to display some elements, not all of
>the elements that are found in the file that's why i
>want to modify endElement.
>If I use DefaultHandler it runs but still endElement
>is not displayed. Did you try to display the
>endElement like below?
>
>void Xml::endElement(const XMLElementDecl & elemDecl,
>const unsigned int urlId, const bool isRoot, const
>XMLCh *const elemPrefix)
>{
>
> std::cout << "Found end element:" <<
>XMLString::transcode(elemPrefix) << std::endl;
>
>}
>
>
>--- Gröndal_Daniel <da...@rfv.sfa.se> a écrit
>: > Hi!
>>
>> I'm doing roughly the same thing as you are:
>>
>> ----------------------------------------------
>> class TestAppHandler : public DefaultHandler
>> {
>> public:
>> TestAppHandler ();
>> virtual ~TestAppHandler();
>> void startElement(const XMLCh* const uri,
>> const XMLCh* const localname,
>> const XMLCh* const qname,
>> const Attributes& attributes);
>> void endElement(const XMLCh* const uri,
>> const XMLCh* const localname,
>> const XMLCh* const qname);
>> void characters(const XMLCh *const chars, const
>> unsigned int length);
>> -----------------------------------------------
>>
>> I have no problem over loading the function
>> endElement() and then to register
>> an object of type TestAppHandler as a
>> contenthandler.
>>
>> ---------------------------------------------
>> parser = XMLReaderFactory::createXMLReader();
>> TestAppHandler handler;
>> parser->setContentHandler(&handler);
>> --------------------------------------------
>>
>> I use Xerces 2.3.0 if that should matter?
>>
>> //daniel
>>
>>
>>
>> David --- (2004-03-16 00:17):
>> >Hello,
>> >Going through the doc i noticed that EndElement
>> >requires the implementation of a handlerbase.
>> >However when I use a handlerbase in my code in got
>> an
>> >error while using SAX2XMLREADER. It complains that
>> >setContentHandler requires a contenthandler.
>> However
>> >my XMLhandler is a HandlerBase.
>> >If I use DefaultHandler instead of HandleBase in
>> Xml.h
>> >it works but then the endElement method is not
>> >available. Can anybody help??
>> >
>> >Error at execution:
>> >
>> >david@home:XmlXercesFactory>make
>> >g++ Xml.cpp -c -o Xml.o
>> >g++ SaxParser.cpp -c -o SaxParser.o
>> >SaxParser.cpp: In member function `virtual void
>> >SaxParser::ParseFile(char*)':
>> >SaxParser.cpp:58: error: no matching function for
>> call
>> >to `
>> >
>>
>>xercesc_2_4::SAX2XMLReader::setContentHandler(Xml*)'
>>
>>/usr/local/include/xercesc/sax2/SAX2XMLReader.hpp:304:
>> >error: candidates are:
>> > virtual void
>> >
>>
>>xercesc_2_4::SAX2XMLReader::setContentHandler(xercesc_2_4::ContentHandler*)
>> >make: *** [SaxParser.o] Error 1
>> >>
>> >
>> >#FILES#
>> >
>> >#Xml.h
>> >
>> >
>> >class xml : public HandlerBase {
>> >
>> >public:
>> >Xml()
>> >virtual ~Xml()
>> >
>> >###Here all the handler methods
>> >
>> >}
>> >
>> >#
>> >in SaxParser.cpp
>> >void SaxParser::ParseFile(char *xmlFile)
>> >{
>> > std::cout <<"Trying to parse "<< xmlFile <<
>> "..."
>> ><< std::endl;
>> >
>> > Xml handler;
>> >
>> > c_parser->setErrorHandler(&handler);
>> > c_parser->setContentHandler(&handler);
>> >
>> >
>> > try {
>> > c_parser->parse(xmlFile);
>> > }
>> > catch (XMLException &e){
>> > std::cout << "Error parsing file "<<
>> >Error(e.getMessage()) << std::endl;
>> > exit (-1);
>> > }
>> > ....
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >Yahoo! Mail : votre e-mail personnel et gratuit qui
>> vous suit partout !
>> >Créez votre Yahoo! Mail sur
>> http://fr.benefits.yahoo.com/
>> >
>> >Dialoguez en direct avec vos amis grâce à Yahoo!
>> Messenger !Téléchargez Yahoo!
>> Messenger sur http://fr.messenger.yahoo.com
>> >
>>
>>---------------------------------------------------------------------
>> >To unsubscribe, e-mail:
>> xerces-c-dev-unsubscribe@xml.apache.org
>> >For additional commands, e-mail:
>> xerces-c-dev-help@xml.apache.org
>> >
>>
>>
>__________________________________________________________
>> RFV Data/Produktenheten E-post:
>> daniel.grondal@rfv.sfa.se
>> Daniel Gröndal Tfn: 060-187126
>> S:a Järnvägsgatan 41 Mobil: 070-3016517
>> 851 93 Sundsvall Fax: 060-147870
>>
>__________________________________________________________
>>
>>
>>
>>
>---------------------------------------------------------------------
>> To unsubscribe, e-mail:
>> xerces-c-dev-unsubscribe@xml.apache.org
>> For additional commands, e-mail:
>> xerces-c-dev-help@xml.apache.org
>>
>
>
>
>
>
>
>Yahoo! Mail : votre e-mail personnel et gratuit qui vous suit partout !
>Créez votre Yahoo! Mail sur http://fr.benefits.yahoo.com/
>
>Dialoguez en direct avec vos amis grâce à Yahoo! Messenger !Téléchargez Yahoo!
Messenger sur http://fr.messenger.yahoo.com
>
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>For additional commands, e-mail: xerces-c-dev-help@xml.apache.org
>
__________________________________________________________
RFV Data/Produktenheten E-post: daniel.grondal@rfv.sfa.se
Daniel Gröndal Tfn: 060-187126
S:a Järnvägsgatan 41 Mobil: 070-3016517
851 93 Sundsvall Fax: 060-147870
__________________________________________________________
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Re: SV:HandlerBase problem with SAXXMLREADER reader
Posted by David --- <da...@yahoo.fr>.
Hi daniel,
For instance I'm using xerces_2_4.
You are using DefaultHandler and I'm trying to use
handlerbase. The reason for that is the following
method EndElement. It doesn't display anything in my
case. However start element display properly all the
elements.
My idea is only to display some elements, not all of
the elements that are found in the file that's why i
want to modify endElement.
If I use DefaultHandler it runs but still endElement
is not displayed. Did you try to display the
endElement like below?
void Xml::endElement(const XMLElementDecl & elemDecl,
const unsigned int urlId, const bool isRoot, const
XMLCh *const elemPrefix)
{
std::cout << "Found end element:" <<
XMLString::transcode(elemPrefix) << std::endl;
}
--- Gröndal_Daniel <da...@rfv.sfa.se> a écrit
: > Hi!
>
> I'm doing roughly the same thing as you are:
>
> ----------------------------------------------
> class TestAppHandler : public DefaultHandler
> {
> public:
> TestAppHandler ();
> virtual ~TestAppHandler();
> void startElement(const XMLCh* const uri,
> const XMLCh* const localname,
> const XMLCh* const qname,
> const Attributes& attributes);
> void endElement(const XMLCh* const uri,
> const XMLCh* const localname,
> const XMLCh* const qname);
> void characters(const XMLCh *const chars, const
> unsigned int length);
> -----------------------------------------------
>
> I have no problem over loading the function
> endElement() and then to register
> an object of type TestAppHandler as a
> contenthandler.
>
> ---------------------------------------------
> parser = XMLReaderFactory::createXMLReader();
> TestAppHandler handler;
> parser->setContentHandler(&handler);
> --------------------------------------------
>
> I use Xerces 2.3.0 if that should matter?
>
> //daniel
>
>
>
> David --- (2004-03-16 00:17):
> >Hello,
> >Going through the doc i noticed that EndElement
> >requires the implementation of a handlerbase.
> >However when I use a handlerbase in my code in got
> an
> >error while using SAX2XMLREADER. It complains that
> >setContentHandler requires a contenthandler.
> However
> >my XMLhandler is a HandlerBase.
> >If I use DefaultHandler instead of HandleBase in
> Xml.h
> >it works but then the endElement method is not
> >available. Can anybody help??
> >
> >Error at execution:
> >
> >david@home:XmlXercesFactory>make
> >g++ Xml.cpp -c -o Xml.o
> >g++ SaxParser.cpp -c -o SaxParser.o
> >SaxParser.cpp: In member function `virtual void
> >SaxParser::ParseFile(char*)':
> >SaxParser.cpp:58: error: no matching function for
> call
> >to `
> >
>
>xercesc_2_4::SAX2XMLReader::setContentHandler(Xml*)'
>
>/usr/local/include/xercesc/sax2/SAX2XMLReader.hpp:304:
> >error: candidates are:
> > virtual void
> >
>
>xercesc_2_4::SAX2XMLReader::setContentHandler(xercesc_2_4::ContentHandler*)
> >make: *** [SaxParser.o] Error 1
> >>
> >
> >#FILES#
> >
> >#Xml.h
> >
> >
> >class xml : public HandlerBase {
> >
> >public:
> >Xml()
> >virtual ~Xml()
> >
> >###Here all the handler methods
> >
> >}
> >
> >#
> >in SaxParser.cpp
> >void SaxParser::ParseFile(char *xmlFile)
> >{
> > std::cout <<"Trying to parse "<< xmlFile <<
> "..."
> ><< std::endl;
> >
> > Xml handler;
> >
> > c_parser->setErrorHandler(&handler);
> > c_parser->setContentHandler(&handler);
> >
> >
> > try {
> > c_parser->parse(xmlFile);
> > }
> > catch (XMLException &e){
> > std::cout << "Error parsing file "<<
> >Error(e.getMessage()) << std::endl;
> > exit (-1);
> > }
> > ....
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >Yahoo! Mail : votre e-mail personnel et gratuit qui
> vous suit partout !
> >Créez votre Yahoo! Mail sur
> http://fr.benefits.yahoo.com/
> >
> >Dialoguez en direct avec vos amis grâce à Yahoo!
> Messenger !Téléchargez Yahoo!
> Messenger sur http://fr.messenger.yahoo.com
> >
>
>---------------------------------------------------------------------
> >To unsubscribe, e-mail:
> xerces-c-dev-unsubscribe@xml.apache.org
> >For additional commands, e-mail:
> xerces-c-dev-help@xml.apache.org
> >
>
>
__________________________________________________________
> RFV Data/Produktenheten E-post:
> daniel.grondal@rfv.sfa.se
> Daniel Gröndal Tfn: 060-187126
> S:a Järnvägsgatan 41 Mobil: 070-3016517
> 851 93 Sundsvall Fax: 060-147870
>
__________________________________________________________
>
>
>
>
---------------------------------------------------------------------
> To unsubscribe, e-mail:
> xerces-c-dev-unsubscribe@xml.apache.org
> For additional commands, e-mail:
> xerces-c-dev-help@xml.apache.org
>
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SV:HandlerBase problem with SAXXMLREADER reader
Posted by Gröndal Daniel <da...@rfv.sfa.se>.
Hi!
I'm doing roughly the same thing as you are:
----------------------------------------------
class TestAppHandler : public DefaultHandler
{
public:
TestAppHandler ();
virtual ~TestAppHandler();
void startElement(const XMLCh* const uri,
const XMLCh* const localname,
const XMLCh* const qname,
const Attributes& attributes);
void endElement(const XMLCh* const uri,
const XMLCh* const localname,
const XMLCh* const qname);
void characters(const XMLCh *const chars, const unsigned int length);
-----------------------------------------------
I have no problem over loading the function endElement() and then to register
an object of type TestAppHandler as a contenthandler.
---------------------------------------------
parser = XMLReaderFactory::createXMLReader();
TestAppHandler handler;
parser->setContentHandler(&handler);
--------------------------------------------
I use Xerces 2.3.0 if that should matter?
//daniel
David --- (2004-03-16 00:17):
>Hello,
>Going through the doc i noticed that EndElement
>requires the implementation of a handlerbase.
>However when I use a handlerbase in my code in got an
>error while using SAX2XMLREADER. It complains that
>setContentHandler requires a contenthandler. However
>my XMLhandler is a HandlerBase.
>If I use DefaultHandler instead of HandleBase in Xml.h
>it works but then the endElement method is not
>available. Can anybody help??
>
>Error at execution:
>
>david@home:XmlXercesFactory>make
>g++ Xml.cpp -c -o Xml.o
>g++ SaxParser.cpp -c -o SaxParser.o
>SaxParser.cpp: In member function `virtual void
>SaxParser::ParseFile(char*)':
>SaxParser.cpp:58: error: no matching function for call
>to `
>
>xercesc_2_4::SAX2XMLReader::setContentHandler(Xml*)'
>/usr/local/include/xercesc/sax2/SAX2XMLReader.hpp:304:
>error: candidates are:
> virtual void
>
>xercesc_2_4::SAX2XMLReader::setContentHandler(xercesc_2_4::ContentHandler*)
>make: *** [SaxParser.o] Error 1
>>
>
>#FILES#
>
>#Xml.h
>
>
>class xml : public HandlerBase {
>
>public:
>Xml()
>virtual ~Xml()
>
>###Here all the handler methods
>
>}
>
>#
>in SaxParser.cpp
>void SaxParser::ParseFile(char *xmlFile)
>{
> std::cout <<"Trying to parse "<< xmlFile << "..."
><< std::endl;
>
> Xml handler;
>
> c_parser->setErrorHandler(&handler);
> c_parser->setContentHandler(&handler);
>
>
> try {
> c_parser->parse(xmlFile);
> }
> catch (XMLException &e){
> std::cout << "Error parsing file "<<
>Error(e.getMessage()) << std::endl;
> exit (-1);
> }
> ....
>
>
>
>
>
>
>
>
>
>
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