any way to see the non-printable stuff in strings?

[darren]

Hi

I'm working on a project that has a lot of string processing going
on. I'm getting hung up because I can't see some of the hidden
characters in my strings (\n, \r\n, \t etc etc). Is there any way to
print out a string to standard out that shows these hidden characters
as escape sequences instead of their literal meaning?

 

[sebastian]

something like this would work:

std::string
expand_escapes( std::string const & text )
{
std::stringstream
result;
for
(
string::const_iterator
seq = text.begin( ),
fin = text.end( );
seq != fin;
seq++
)
{
if( isprint( *seq ) )
result << *seq;
else
result << "<" << ( int * )*seq << ">";
}
return result.str( );
}


int
main( void )
{
std::cout << expand_escapes( "bell: \b newline: \n crlf: \r\n" )
<< std::endl;
}

 

[darren]

something like this would work:

std::string
expand_escapes( std::string const & text )
{
std::stringstream
result;
for
(
string::const_iterator
seq = text.begin( ),
fin = text.end( );
seq != fin;
seq++
)
{
if( isprint( *seq ) )
result << *seq;
else
result << "<" << ( int * )*seq << ">";
}
return result.str( );

}

int
main( void )
{
std::cout << expand_escapes( "bell: \b newline: \n crlf: \r\n" )
<< std::endl;

}

cool, thanks for the help sebastian, i'll give it a try.