libxml++ enable exception handling

Pianoman78315 · 10-26-2010, 04:45 AM

Hello,

To parse several XML documents I´m using libxml++. I do programming for linux angstrom-armv5te. Because compiling libxml++ for this distribution and platform was impossible, I simply included the library to my project, which workes fine.

Unfortunately I´m not able not use the exception handing which effects that a simple error inside a documents makes my whole program crash. This should not happen.

Is there a way to check the documents validity before parsing or better active the exception handling for doing this:

Code:

try{
xmlpp::DomParser Parser; 
Parser.parse_file( XMLFilePath);
}
catch (...){ 
printf("error"); 
}

LIBXMLCPP_EXCEPTIONS_ENABLED is not defined. Inside the 'libxml++config.h' there is following code:

Code:

#ifdef GLIBMM_CONFIGURE
/* compiler feature tests that are used during compile time and run-time
   by libxml++ only. */
#undef LIBXMLCPP_EXCEPTIONS_ENABLED
#endif /* GLIBMM_CONFIGURE */

Any chances to solve my problem?
Thanks in advance, Michael

paulsm4 · 10-27-2010, 12:30 AM

Hi -

I can't believe that if you're able to compile your application, you're not able to RE-compile libxml++ (and compile it with exception support).

"Plan A" should certainly be to create a viable libXML++, if at all possible.

If it isn't possible, for whatever reason, then I guess "Plan B" would be to find a different library.

"expat" would probably be a good choice:
http://expat.sourceforge.net/

'Hope that helps

Pianoman78315 · 10-28-2010, 02:36 AM

The reason why I can´t compile libxml++ is that after configuring and setting all paths and env-variables right, during compilation strange ref paths apeared that never existed on my system. The library is unable to compile because those paths don´t exists. I manipulated everything inside the makefile that could be the reason. Later on I found those paths in the *.la file of another already installed library. I´m not sure if it was glibmm or libxml2. Those paths do also exist in the binaries of the libraries as dependencies . Creating a path with that name and putting in the libs I was able to make, but unfortunately not to install.

What could be the reason why LIBXMLL_EXCEPTION_ENABLED is not defined. What do I have to do to enable this?

Pianoman78315 · 10-28-2010, 07:48 AM

problem solved.

redefined LIBXMLCPP_EXCEPTIONS_ENABLED where it is to be undefined in 'libxml++config.h'.

Then while compiling an error appeared in 'textreader.cc'.

Uncommented following lines in 'textreader.cc' ( 375 - 378 )

Code:

TextReader* ths = const_cast<TextReader*>(this);

   int severity = severity_;
   ths->severity_ = 0;

Then compiling works fine. Exception handling as well. I´m so happy.
Thank you very much.