Maybe it's just bad naming, but couldn't be that the a_data you are
using in the function is the same a_data where you store the file name?
Are you invoking parseData(a_size, buffer)?
Alberto
Matthias Höpfer wrote:
Alberto:
Thanks for your hint.
Steps were as follows:
- receive xml fragments time by time
- save to hdd
- load xml into buffer
- forward buffer to xmlhandler
- parse with xerces
Below is the code i loaded the xml into buffer:
// reading from file, then forward buffer to xml handler
std::string strfile ( (char*)a_data );
ifstream file ( strfile.c_str(), ios::in );
char* buffer = new char [a_size];
file.read ( buffer, a_size );
// fwd buffer to xmlhandler an parse with xerces
Anyway, i left the 'load xml to buffer' completely and forwarded just the
filename to xerces. Which seems a cleaner solution to me. Adding ios::binary
didn't work either. The problem just occurs on this special kind of
buffer/filelenght. There's no problem if the size is smaler.
The new steps are:
- receive xml fragments time by time
- save to hdd
- forward filename to xmlhandler
- parse with xerces
Thanks for your help, folks. Issue solved due to my needs.
Matthias
-----Original Message-----
From: Alberto Massari [mailto:[EMAIL PROTECTED]
Sent: Tuesday, June 03, 2008 10:06 AM
To: [email protected]
Subject: Re: MemBufInputSource: Unknown Exception
The exception should be an UTFDataFormatException, that complains about an
invalid UTF-8 structure; if the XML can be parsed when is on the disk, maybe
the code that loads it has a bug (maybe you are opening it as a text stream,
and single \n gets turned into \n\r)
Alberto
Matthias Höpfer wrote:
Dave:
You're right, i'm using Visual Studio (6.0 beeing exactly). I catch an
'...(KERNEL32.DLL): 0xE06D7363: Microsoft C++ Exception.'. Stepping through
the calling stack didn't help me (me, but maybe someone else...) any further.
KERNEL32! 7c812a5b()
MSVCRTD! [EMAIL PROTECTED] + 57 bytes
xercesc_2_8::XMLUTF8Transcoder::checkTrailingBytes(const unsigned char
205, const unsigned int 1, const unsigned int 1) line 110
xercesc_2_8::XMLUTF8Transcoder::transcodeFrom(const unsigned char *
const 0x01afcc67, const unsigned int 6807, unsigned short * const
0x01ad8c24, const unsigned int 16384, unsigned int & 36826000,
unsigned char * const 0x01ae0c28) line 246
xercesc_2_8::XMLReader::xcodeMoreChars(unsigned short * const
0x01ad8c24, unsigned char * const 0x01ae0c28, const unsigned int
16384) line 1751 + 78 bytes
xercesc_2_8::XMLReader::refreshCharBuffer() line 547 + 42 bytes
xercesc_2_8::XMLReader::getNextChar(unsigned short & 59792) line 714 +
8 bytes
xercesc_2_8::ReaderMgr::getNextChar() line 95 + 15 bytes
xercesc_2_8::IGXMLScanner::scanAttValue(const xercesc_2_8::XMLAttDef *
const 0x00000000, const unsigned short * const 0x01b0cb88,
xercesc_2_8::XMLBuffer & {...}) line 2319 + 14 bytes
xercesc_2_8::IGXMLScanner::scanStartTag(unsigned char & 1) line 1860 +
32 bytes
xercesc_2_8::IGXMLScanner::scanContent() line 899
xercesc_2_8::IGXMLScanner::scanDocument(const xercesc_2_8::InputSource
& {...}) line 214 + 8 bytes
xercesc_2_8::AbstractDOMParser::parse(const xercesc_2_8::InputSource &
{...}) line 519 CXmlHandler::parseDataRequest(const unsigned int
39610, const unsigned char * 0x01ec2b10) line 66 + 17 bytes
I still don't know what's wrong. (Therefore i included the calling
stack. Maybe someone's got a clue...)
At the moment i'm thinking about inserting an switch deciding between memory or
file input. But i'd definitely prefer the memory input source.
Matthias
-----Original Message-----
From: David Bertoni [mailto:[EMAIL PROTECTED]
Sent: Monday, June 02, 2008 7:45 PM
To: [email protected]
Subject: Re: MemBufInputSource: Unknown Exception
Matthias Hopfer wrote:
Hi all,
Currently i'm trying to parse a well formed xml from memory via
MemBufInputSource.
// init above works fine
// code start
...
catch (...)
{
TRACE ( _T("CXmlHandler::parseDataRequest(): catched UKNOWN
Exception\n") );
}
//...
}
// code end
Every time i catch an 'Unknown Exception' and i don't know why. If
i'm parsing the file directly from HDD, it works without any errors.
The file itself is a wellformed xml but pretty 'huge' (39610 bytes).
Assuming that there are no mistakes reading the file into memory (did
it quite often...=), i have absolutely no clue what i'm doing wrong.
Anybody hints?
If I had to guess, I would say it's an access violation. However, instead of having us guess, you might want to run this in the debugger.
It looks like you're using Visual Studio, so the debugger will display the type of exception in the output window. You can also configure the debugger to break when an exception is thrown, which will help you determine where the exception is thrown.
Dave
