Matching binary data using boost regex
Is boost regex able to match binary data in a given binary input?
Ex.:
Input in binary form:0x01 0x02 0x03 0x04 0x05 0x01 0x02 0x03 0x04 0x08
Binary expression to match:
0x01 0x02 0x03 0x开发者_StackOverflow中文版04
In this case, 2 instances should be matched.
Many thanks!
Yes, boost::regex supports binary.
Your question is not clean enough to me. So If this answer is not what you looking for, just tell me I will delete it.
The regex
boost library is much powerful than C++
as you can in the screenshot:
picture source
Also when the C++ can do it, of course Boost can do it, as well.
std::regex::iterator
std::string binary( "0x01 0x02 0x03 0x04 0x05 0x01 0x02 0x03 0x04 0x08" );
std::basic_regex< char > regex( "0x01 0x02 0x03 0x04" );
// or
// std::basic_regex< char > regex( "0x01.+?4" );
std::regex_iterator< std::string::iterator > last;
std::regex_iterator< std::string::iterator > begin( binary.begin(), binary.end(), regex );
while( begin != last ){
std::cout << begin->str() << '\n';
++begin;
}
output
0x01 0x02 0x03 0x04
0x01 0x02 0x03 0x04
or
std::regex_token::iterator
std::string binary( "0x01 0x02 0x03 0x04 0x05 0x01 0x02 0x03 0x04 0x08" );
std::basic_regex< char > regex( " 0x0[58] ?" );
std::regex_token_iterator< std::string::iterator > last;
std::regex_token_iterator< std::string::iterator > begin( binary.begin(), binary.end(), regex, -1 );
while( begin != last ){
std::cout << *begin << '\n';
++begin;
}
output
as the same
With boost
std::string binary( "0x01 0x02 0x03 0x04 0x05 0x01 0x02 0x03 0x04 0x08" );
boost::basic_regex< char > regex( " 0x0[58] ?" );
boost::regex_token_iterator< std::string::const_iterator > last;
boost::regex_token_iterator< std::string::const_iterator > begin( binary.begin(), binary.end(), regex, -1 );
while( begin != last ){
std::cout << *begin << '\n';
++begin;
}
output
as the same
difference: std::string::const_iterator, instead of std::string::iterator
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