[Boost-users] xpressive - delete weird character is a string

Subject: [Boost-users] xpressive - delete weird character is a string
From: Jean-Christophe Roux (jcxxr_at_[hidden])
Date: 2010-12-23 15:09:24

Hello,

I have strings coming from a webpage (through a post form and fastcgi 
application) that contain "weird characters".
In vim, those characters appears like ^@ in blue. Those weird characters were 
not there in the web form but are there in my fasctcgi application. 
I suspect they appear like that because of issues with charset but I am not 
sure. 

I would like to have a function to remove those weird characters from the 
strings and I would think that xpressive would be a good tool for that.

When the weird characters are at the ends of the string, I trim using this 
function and the boost algo library

 void
 remove_non_graph(std::string& str)
 {
   using namespace boost;
   trim_if(str, !is_print());
   return;
 }

but this does not work when the weird character is inside the string or there 
are break lines.

Is there an easy way to clean those strings with xpressive?

Thank you
Jean