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henrym

String Tokenization

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I'm making a Console and I'm having lots of problems with my TokenizeCommand method:
      
bool CConsole::TokenizeCommand(const string &command)
{
	argc = 0;
	argv.clear();

	istringstream data(command);
	string token;

	//copy tokens to argv

	while (data >> token)
	{
		argv[argc++] = token;
	}

	return true;
}
  
argc is int, argv is std::vector<string>. It creates an unhandled exception : access violation. Code compiles fine, no errors but, a few warnings...which I have chosen to ignore (happens with all my projects using vector or string):
        
c:\program files\microsoft visual studio\vc98\include\vector(39) : warning C4786: 'std::reverse_iterator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const *,std::basic_string<char,std::char_traits<char>,std::allocator<char> 
>,std::basic_string<char,std::char_traits<char>,std::allocator<char> > const &,std::basic_string<char,std::char_traits<char>,std::allocator<char> > const *,int>' : identifier was truncated to '255' characters in the debug information
        c:\program files\microsoft visual studio\vc98\include\vector(39) : while compiling class-template member function '__thiscall std::vector<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<c
har,std::char_traits<char>,std::allocator<char> > > >::std::vector<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >(const std::allocator<std:
:basic_string<char,std::char_traits<char>,std::allocator<char> > > &)'
c:\program files\microsoft visual studio\vc98\include\vector(39) : warning C4786: 'std::reverse_iterator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > *,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std:
:basic_string<char,std::char_traits<char>,std::allocator<char> > &,std::basic_string<char,std::char_traits<char>,std::allocator<char> > *,int>' : identifier was truncated to '255' characters in the debug information
        c:\program files\microsoft visual studio\vc98\include\vector(39) : while compiling class-template member function '__thiscall std::vector<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<c
har,std::char_traits<char>,std::allocator<char> > > >::std::vector<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >(const std::allocator<std:
:basic_string<char,std::char_traits<char>,std::allocator<char> > > &)'
c:\program files\microsoft visual studio\vc98\include\vector(39) : warning C4786: 'std::vector<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >
 >::vector<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >' : identifier was truncated to '255' characters in the debug information
c:\program files\microsoft visual studio\vc98\include\vector(60) : warning C4786: 'std::vector<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >
 >::~vector<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >' : identifier was truncated to '255' characters in the debug information
      
Is there anything at all wrong with my code? Henrym My Site [edited by - henrym on September 15, 2002 6:46:00 AM]

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VC++ Specific - Get RID of the warnings with

#pragma warning(disable:4786) // stl names truncated to 255 chars


Make sure you do this *before including anything of the STL!*
Otherwise these will still plop up!

Regards
/Roger

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Davepermen had the right answer. The explanation is that a vector is not an infinitely-sized array, and therefore you can''t just use the [] operator to add elements randomly. It needs to be of the appropriate size first. Using push_back handles this for you, as it increases the size by one and adds the element into that last position.

[ MSVC Fixes | STL | SDL | Game AI | Sockets | C++ Faq Lite | Boost | Asking Questions | Organising code files | My stuff ]

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