java - Regex to replace all in a String, but no those inside [code] [/code] tag

Question

I need help to replace all (new line) caracters for
in a String, but not those inside [code][/code] tags. My brain is burning, I can't solve this by my own :(

Example:

test test test
test test test
test
test

[code]some
test
code
[/code]

more text

Should be:

test test test<br />
test test test<br />
test<br />
test<br />
<br />
[code]some
test
code
[/code]<br />
<br />
more text<br />

Thanks for your time. Best regards.

Answer 1

I would suggest a (simple) parser, and not a regular expression. Something like this (bad pseudocode):

stack elementStack;

foreach(char in string) {
    if(string-from-char == "[code]") {
        elementStack.push("code");
        string-from-char = "";
    }

    if(string-from-char == "[/code]") {
        elementStack.popTo("code");
        string-from-char = "";
    }

    if(char == "
" && !elementStack.contains("code")) {
        char = "<br/>
";
    }
}