CODEWITHSUNDEEP
regextextkeywordparentheses
burakakkor
burakakkor

Reputation: 345

Regex get text between parentheses and keywords

i have a text pattern like this;

(((a) or (b) or (c)) and ((d) or (e)) and ((!f) or (!g)))

and i want to get it like this;

((a) or (b) or (c))
((d) or (e))
((!f) or (!g))

After that i want to seperate them like this;

a,b,c
d,e
!f,!g

any help would be awesome :)

edit 1: sorry about the missing parts; using language is C# and this is what i got;

(\([^\(\)]+\))|([^\(\)]+)

with i got;

(a) or (b) or (c) and (d) or (e) and (!f) or (!g)

thanks already!

Upvotes: 2

Views: 281

Answers (2)

burakakkor
burakakkor

Reputation: 345

After my work i figure this;

  string msg = "(((a) or (b) or (c)) and ((d) or (e)) and ((!f) or (!g)))";

  Regex regex = null;
  MatchCollection matchCollection = null;

  regex = new Regex(@"(\([^\(\)]+\))|([^\(\)]+)"); // For outer parantheses
  matchCollection = regex.Matches(query);
  foreach (Match match in matchCollection)
  {
    MatchCollection subMatchCollection = Regex.Matches(match.Value, @"(""[^""]+"")|([^\s\(\)]+)"); // For value of inner parantheses
    foreach (Match subMatch in subMatchCollection)
    {
      //with 2 loops i got each elements of this type of string.
    }
  }

Thanks to everyone! :)

Upvotes: 0

Jerry
Jerry

Reputation: 71538

Taking this previous regex and modifying the code a little...

string msg= "(((a) or (b) or (c)) and ((d) or (e)) and ((!f) or (!g)))";
var charSetOccurences = new Regex(@"\(((?:[^()]|(?<o>\()|(?<-o>\)))+(?(o)(?!)))\)");
var charSetMatches = charSetOccurences.Matches(msg);
foreach (Match mainMatch in charSetMatches)
{
    var sets = charSetOccurences.Matches(mainMatch.Groups[1].Value);
    foreach (Match match in sets)
    {
        Console.WriteLine(match.Groups[0].Value);
    }
}

The first regex is being used to get the contents of the outermost paren.

The same regex is then used to get the individual sets within the 'larger' content. You get this as output:

((a) or (b) or (c))
((d) or (e))
((!f) or (!g))

ideone demo

If you want to remove the outer parens, just change the innermost line:

Console.WriteLine(match.Groups[0].Value);

to

Console.WriteLine(match.Groups[1].Value);

To get:

(a) or (b) or (c)
(d) or (e)
(!f) or (!g)

I trust you can take it from here.

Upvotes: 1

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