CODEWITHSUNDEEP
c#string
Jan Hakl
Jan Hakl

Reputation: 75

Get text inside the pair of outside brackets

I need to get the text from the outside pair of brackets So from the text like this with unknown number of inside blocks:

Block1{{text1}{text2} ... {text n}}

get the result:

{text1}

and

{text2} ....{text n}

Is there an easy way how to do it? Thanks!

Upvotes: 0

Views: 140

Answers (2)

Becca
Becca

Reputation: 1580

You can use regular expressions.

    String pattern = @"(Block[0-9]+){({[^}]+})*}";
    String text = @"Block1{{text1}{text2}{text3}{text4}{text5}{text6}}Block2{{text1}{text2}{text3}}";
    foreach(Match match in Regex.Matches(text, pattern))
    {
        Console.Out.WriteLine("---------");
        Console.Out.WriteLine("Match: `" + match.ToString() + "`");

        foreach(Group grp in match.Groups) 
        {
            Console.Out.WriteLine("    Group: `" + grp.Value + "`");
            foreach(Capture cpt in grp.Captures)
            {
                Console.Out.WriteLine("        Capture: `" + cpt.Value + "`");
            }
        }
    }

Breaking down the regular expression pattern:

Capture the literal Block and zero or more numerical digits:

(Block[0-9]+)

Process a literal {:

{

Capture zero or more repetitions of a literal {, one or more of anything but }, and then a literal }:

({[^}]+})*

Process a literal }:

}

Here's a .NET fiddle.

edit 2: Based on conversation in the comments, the original question was intended to be broader. I think the following answer works for the specific case originally presented, but the answer above is generic.

You can use regular expressions.

    String pattern = @"{({[^}]+})({[^}]+})}";

    Match match = Regex.Match(text, pattern);
    Console.Out.WriteLine("---------");
    Console.Out.WriteLine("Match: `" + match.ToString() + "`");

    if (match.Groups.Count == 3)
    {
        Console.Out.WriteLine("    Group 1: ``" + match.Groups[1].Value);
        Console.Out.WriteLine("    Group 2: ``" + match.Groups[2].Value);
    }

To break down this expression:

Match one opening curly braces:

{

Make a group out of one opening curly brace, one or more characters that are not a closing curly brace, and one closing curly brace.

({[^}]+})

Make a group out of one opening curly brace, one or more characters that are not a closing curly brace, and one closing curly brace.

({[^}]+})

Match one closing curly brace:

}

edit: I had made a mistake that I have corrected with the first regular expression; it yielded text1 rather than {text1} and similarly for text2.

Upvotes: 1

user8628164
user8628164

Reputation: 1

Try indexing methods. (Ex: Block1[0], Block1[1])

Block1[0]

Upvotes: -3

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