I have a following string that I would like to parse into either a List or a String[].
(Test)(Testing (Value))
End result should be Test and Testing (Value)
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118answers:
3
+2
A:
If I understood correctly that you need Test and Testing (Value), then here is regexp:
\(([^\)]+)\)\((.+)\)
and masked version of it ready for java string:
\\(([^\\)]+)\\)\\((.+)\\)
serg
2010-05-11 18:48:30
This cannot handle unlimited nesting.
SLaks
2010-05-11 18:49:48
@SLaks Well, it handles his exact question, although so does `return new String[] {"Test", "Testing (Value)"};`. It's unclear exactly how generic the solution needs to be
Michael Mrozek
2010-05-11 18:51:48
Who said anything about unlimited nesting? And this one would capture `Testing (V(a(l)u)e)` into second captured group, if that's what you mean (and if that's what is needed as it is not clear from the question).
serg
2010-05-11 18:53:04
Yep the solution by serg555 is exactly what I was looking for. Sorry for not being clear. Thanks!
2010-05-11 19:10:59
A:
Please read this section of php manual. It tells you about recursive patterns, which can be used to match nested things, and about the related problems. Google it for more information.
scaryzet
2010-05-11 18:57:15
You might want to include a synopsis or quote from the article you linked to. That way we have a clue as to why we should follow your link.
chilltemp
2010-05-11 19:04:04
@chilltemp: It doesn't really matter in this case; the OP is working in Java, which has no support for recursive regexes.
Alan Moore
2010-05-12 00:17:03
A:
This question is really vague, but under one reasonable interpretation, this is the solution that can take care of arbitrary nesting depth in a certain format:
String text = "(T)(T(V))(1(2(3)2)1)(a*(b+(c-d))+(e/f))";
String[] parts = text.split("(?<=\\))(?=\\()");
System.out.println(java.util.Arrays.toString(parts));
// prints "[(T), (T(V)), (1(2(3)2)1), (a*(b+(c-d))+(e/f))]"
Basically you want to split between )( (using assertions). Won't work for all cases, e.g. ((.)(.)), but like many people have said, the requirements of the question is vague, and the general balanced parenthesis problem is not solvable with Java regex.
See also
polygenelubricants
2010-05-12 03:12:52