Slash in regular expression in Golang

Question

I have two links:

1: /aaa/bbbb/ccccc.htm
2: /xxx/yyy.htm

What regex is able to match the second link?

I have tried:

^\/.*\/.*[^\/].* 

But, it match all of them.

Answer 1

I'm guessing that we might want to pass both URLs, which in that case we would start with:

(\/[a-z]+)?(?:\.htm)?

We can then add more boundaries, if you wish.

RegEx

If this wasn't your desired expression, you can modify/change your expressions in regex101.com.

RegEx Circuit

jex.im visualizes regular expressions:

JavaScript Group Breakup

const regex = /((\/[a-z]+)?(?:\.htm)?)/gm;
const str = `/aaa/bbbb/ccccc.htm
/xxx/yyy.htm`;
const subst = `Group #1: $1\nGroup #2: $2\n`;

// The substituted value will be contained in the result variable
const result = str.replace(regex, subst);

console.log('Substitution result: ', result);

---

If you only wish to pass the second URL and fail the first one, you can simply add some boundaries to your expression, maybe something similar to this would work:

^\/[a-z]+\/[a-z]+.htm$