捕获外部paren组而忽略内部paren组

Question

我正在使用C#和regex，试图捕获外部的paren组，同时忽略内部的paren组。我有遗留生成的文本文件，其中包含数千个字符串构造，如下所示：

([txtData] of COMPOSITE
(dirty FALSE)
(composite [txtModel])
(view [star3])
(creationIndex 0)
(creationProps )
(instanceNameSpecified FALSE)
(containsObject nil)
(sName txtData)
(txtDynamic FALSE)
(txtSubComposites )
(txtSubObjects )
(txtSubConnections )
)

([txtUI] of COMPOSITE
(dirty FALSE)
(composite [txtModel])
(view [star2])
(creationIndex 0)
(creationProps )
(instanceNameSpecified FALSE)
(containsObject nil)
(sName ApplicationWindow)
(txtDynamic FALSE)
(txtSubComposites )
(txtSubObjects )
(txtSubConnections )
)

([star38] of COMPOSITE
(dirty FALSE)
(composite [txtUI])
(view [star39])
(creationIndex 26)
(creationProps composite [txtUI] sName Bestellblatt)
(instanceNameSpecified TRUE)
(containsObject COMPOSITE)
(sName Bestellblatt)
(txtDynamic FALSE)
(txtSubComposites )
(txtSubObjects )
(txtSubConnections )
)

Regex regex = new Regex(@"\((.*?)\)");
return regex.Matches(str);

null

Answer 1

你可以通过平衡群体来实现。

下面是一个匹配外括号的演示。

string sentence = @"([txtData] of COM ..."; // your text

string pattern = @"\((?>\((?<c>)|[^()]+|\)(?<-c>))*(?(c)(?!))\)";
Regex rgx = new Regex(pattern);

foreach (Match match in rgx.Matches(sentence))
{
    Console.WriteLine(match.Value);
    Console.WriteLine("--------");
}