Question

I have these:

<!--{tag}--> 

and

<!--{tag(integer)}-->

and

<!--{tag('argument1')}-->

and

<!--{tag('argument1', 'argument2',... 'argumentn')}-->

I am looking for single pattern, that can handle all of them, I have tried this for the first one, but I have no idea with the second pattern, to the fourth:

<!--\{tag\}-->

ps:
*argument can be an integer (with no quote) or a string with single quote (or double quote).
*The pattern can extract the information in argument

Thanks

Answer 1

It’s not pretty, but this is what I came up with:

<!--\{tag(?:\(((?:\d+)|(?:'\w+')|(?:(?:['"]?\w+['"]?,\s*){1,}['"]?[\w\d]+['"]?))\))?\}-->

You can see from the regexer that it is matching every one of your test cases.

However, it will also match the following test cases, which I am leaving up to the OP to determine how to correct.

<!--{tag(argument1, 2)}--> (missing quotes around string arguments)
<!--{tag("argument1', 2)}--> (unmatched single and double quotes)
<!--{tag(2, "arg)}--> (missing unmatched quotes)