NAME

regex_match – Matche a string from against a compiled regular expression

SYNOPSIS

#include <rationl.h>
int regex_match(reg_t re, char *string);
    

DESCRIPTION

regex_match() matches a regular expression against a string and returns true(1) if the regular expression matches the string or false(0) otherwise.

re The regular expression that was compiled using regex_compile

string The string to match the regular expression against

RETURN VALUE

regex_match() returns true(1) if the string passed as parameter is matched by the regular expression false(0) if not.

EXAMPLES

Program that matches an email address passed as first parameter

#include <rationl.h>
#include <err.h>
#include <stdio.h>
int main(int argc, char** argv)
{


    if(argc != 2)


        errx(1, "No input email address found.");


    reg_t re = regex_compile("\\w+(\\.\\w+)?@\\w+(\\.[a-z]{2,})+");


    if(regex_match(re, argv[1]))


        printf("%s is a valid email.\n", argv[1]);


    else


        printf("%s is not a valid email.\n", argv[1]);


    regex_free(re);


    return 0;
}