在括号()之间获取文本的Reg表达式,我尝试过,但我没有得到RegEx。对于这个例子
Regex。匹配(脚本,@“\(.*?\)”)。值
例子:-
add(mul(a,add(b,c)),d) + e - sub(f,g)
Output =>
1) mul(a,add(b,c)),d
2) f,g
...NET允许在正则表达式中递归。请参见平衡组定义
var input = @"add(mul(a,add(b,c)),d) + e - sub(f,g)";
var regex = new Regex(@"
\( # Match (
(
[^()]+ # all chars except ()
| (?<Level>\() # or if ( then Level += 1
| (?<-Level>\)) # or if ) then Level -= 1
)+ # Repeat (to go from inside to outside)
(?(Level)(?!)) # zero-width negative lookahead assertion
\) # Match )",
RegexOptions.IgnorePatternWhitespace);
foreach (Match c in regex.Matches(input))
{
Console.WriteLine(c.Value.Trim('(', ')'));
}