Question

I have some boost Regex code which I think should fire. I’m new to boost but I know a little bit of Regex. Here’s the code that I’m using.

re = boost::basic_regex<TCHAR>(_T("-+\\s+Original\\s+Message\\s+-+"), boost::regex_constants::icase);
boost::match_results<TSTRING::const_iterator> result;
if(boost::regex_match(RawBody, result, re))

and here is the test string I’m using.

this is a test

-------- Original Message --------

everything under here should disappear

My code compiles and runs, it just doesn’t trigger the if statement. I tried debugging into the boost code and … yeah…

Answer 1

regex_match

The algorithm regex_match determines whether a given regular
expression matches all of a given character sequence denoted by a pair
of bidirectional-iterators, the algorithm is defined as follows, the
main use of this function is data input validation.

regex_search

The algorithm regex_search will search a range denoted by a pair of
bidirectional-iterators for a given regular expression. The algorithm
uses various heuristics to reduce the search time by only checking for
a match if a match could conceivably start at that position. The
algorithm is defined as follows:

So, use boost::regex_search. Example.

http://liveworkspace.org/code/fa35778995c4bd1e191c785671ab94b6