DEELX Engine Examples: Test Email

To test whether a string is valid email address.

Regular Expression

^([0-9a-zA-Z]([-.\w]*[0-9a-zA-Z])*@(([0-9a-zA-Z])+([-\w]*[0-9a-zA-Z])*\.)+[a-zA-Z]{2,9})$

Method

MatchExact

Code

#include "deelx.h" int test_email(const char * string) {     // declare, you can use 'static' if your regex does not change     CRegexpT <char> regexp("^([0-9a-zA-Z]([-.\\w]*[0-9a-zA-Z])*@(([0-9a-zA-Z])+([-\\w]*[0-9a-zA-Z])*\\.)+[a-zA-Z]{2,9})$");     // test     MatchResult result = regexp.MatchExact(string);     // matched or not     return result.IsMatched(); } int main(int argc, char * argv[]) {     char * str1 = "bob@smith.com";     char * str2 = "bob@.com";     printf("'%s' => %s\n", str1, (test_email(str1) ? "yes" : "no"));     printf("'%s' => %s\n", str2, (test_email(str2) ? "yes" : "no"));     return 0; }