crpcut::regex

crpcut::regex
	Chapter 2. namespace crpcut

Match a string against a regular expression.

Used in: Template parameter to crpcut::match<matcher>(...) in either an ASSERT_PRED(pred, ...) check or as matcher argument to ASSERT_THROW(expr, exc_type, matcher?) or VERIFY_THROW(expr, exc_type, matcher?).The predicate accepts either a C-string or a std::string as value to match against the regular expression.

crpcut::match<crpcut::regex>(pattern, flags = 0)

Parameters

pattern

The pattern string that is a regular expression. The pattern can be either a C-string or a std::string.

	Note
	Beware of C/C++ escape rules when regular expressions contain “\”.

flags

A combination using the bit-wise or (|) operator using zero or more of:

Flag

crpcut::regex::i

Ignore case when matching. Equal to REG_ICASE in regcomp().

	Note
	crpcut::regex::`i` does not take any locale into consideration.

crpcut::regex::e

Use extended regular expressions. Equal to REG_EXTENDED in regcomp()

crpcut::regex::m

Pattern is multi line. Equal to REG_NEWLINE in regcomp()

Example: the test program

     
     #include <crpcut.hpp>
     #include <string>
     
     std::string name()
     {
       return "192.168.0.1 is a valid IP address";
     }
     
     TEST(fail_non_extended)
     {
       ASSERT_PRED(crpcut::match<crpcut::regex>("^([0-9]{1,3}\\.){3}[0-9]{1,3}.*"),
                   name());
     }
     
     TEST(pass_extended)
     {
       ASSERT_PRED(crpcut::match<crpcut::regex>("^([0-9]{1,3}\\.){3}[0-9]{1,3}.*",
                                                crpcut::regex::e),
                   name());
     }
     
     int main(int argc, char *argv[])
     {
       return crpcut::run(argc, argv);
     }

fails one test:


     FAILED!: fail_non_extended
     phase="running"  --------------------------------------------------------------
     samples/regex.cpp:39
     ASSERT_PRED(crpcut::match<crpcut::regex>("^([0-9]{1,3}\\.){3}[0-9]{1,3}.*"), name())
       param1 = 192.168.0.1 is signed char valid IP address
     crpcut::match<crpcut::regex>("^([0-9]{1,3}\\.){3}[0-9]{1,3}.*") :
     "192.168.0.1 is signed char valid IP address" does not match
     
     -------------------------------------------------------------------------------
     ===============================================================================
     2 test cases selected
     
     Total    :     Sum   Critical   Non-critical
     PASSED   :       1          1              0
     FAILED   :       1          1              0


crpcut::match_traits		crpcut::relative_diff