reading parameter file and parsing the contents

[easy]

i need to read in parameter files of unknown length where the
parameters are given in pairs such as "key value" (without quotes). I
only recognize one pair per line and if I encounter a '#' I ignore
anything past the '#' and if an "end" I end the loop. This code works
fine but I want to apply it to other things.

I am new to C++ and I have the suspicion that there is a more elegant
way to do what I did. Before I use the same method in other places I'd
like to know how this could be improved and made "more correct" in
general, and specifically on how I searched for alphanums.


int ParameterFile_t::read( map<string,string>* ParameterTable )
{
string readout;
stromg alphanum =
"AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz1234567890_.,";
string read1;
string read2;
unsigned int start = 0;
unsigned int end = 0;
while( !parameterfile.eof() )
{
getline(parameterfile, readout);
unsigned int found;
if( (found = readout,find('#')) != string::npos )
readout.erase( found , readout.length() );

// get first string
if( (start = readout.find_first_of(alphanum )) == string::npos)
continue;
end = readout.find_first_not_of(alphanum,start);
read1 = readout.substr(start, end - start);

// is end?
if( read.compare("end") == 0 )
break;

// get second string
if( (start = readout.find_first_of(alphanum, end+1 )) ==
string::npos)
continue;
end = readout.find_first_not_of(alphanum,start);
read2 = readout.substr(start, end - start);

(*ParameterTable)[read1] = read2;
}
return 0;
}

Thanks, Chris.
and please forgive me if I'm in the wrong group.

 

[easy]

** edit :: "stromg alphanum" = should be "string alphanum ="

 

[Edernity]

hello easy,
You should check out fstream class of the iostream header.
by that you can do the tokenizer much easier and basic too.
There are some complex tokenizer that you can get too. I have it too.
You know, you can do this parameter things easy. See the fstream bet,
I'll all be clear to you. (wonder how much money lost out for classes
to solve these simple questions, I was one of them eheh)
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