Regular expression

[techm]

#include <iostream>
Can anybody please help me to extract till "/" or "0x2f" into b(string) ??

Please do the needful.

#include <pcrecpp.h>

using namespace std;

int main() {
string str1("hello0x3Ftest/test/etsdf");
pcrecpp::RE re("([^(/|?:0x2F)].*)/(.*)/(.*)");
string b, k, p;
if ((re.FullMatch(str1, &b, &k, &p)) ) {
cout<< "\n b: "<<b << " k: " << k <<" P: "<<p<<endl;
} else {
cout<<"invalid\n";
}
}

output : b: hello3Ftest k: test P: etsdf

but Expected output :
output : b: hello

[Galik]

.* is greedy, try .*? to get the shortest match rather than the longest

[mcleano]

http://www.cplusplus.com/reference/string/string/find/
http://www.cplusplus.com/reference/string/string/substr/

[Galik]

What exactly do you want the expression to do?

[Galik]

I don't know the regex engine you are using but you might want to try this, it may do what you want: "([^/]+)(?:/|$)"

It says take everything that is not a '/' until you meet a '/' or the end.

[techm]

I want to extract until "/" or "0x2F" ..I meant to say that if I encode "/" to hex then also I want to extract until "/".

[helios]

Regular expressions are overkill for this. Just search the input string for "/" and "0x2F" and cut the string at whichever comes first.