C# Regex原子开闭括号

Question

我有以下占位符，我试图使用原子组成对捕获双开括号和尾括号：

{{(？>{{((？)\{}}(<-纵深>)\{}^}*}]((深度)(？)) 我是{名字}，我有{{刻度}：红色{{metallic_scales}：闪闪发光}}

可以肯定地说，我并没有取得多大的成功。

所以我想要这样的东西：

1. {名称}
2. {鳞片}：红色{metallic_scales}：闪闪发光}鳞片}}
3. {{metallic_scales}：闪闪发光的}

Answer 1

你可以用

(?=                    # Start of a positive lookahead to enable overlapping matches
  (?<results>          # The group storing the results
    {{                 # {{ (left-hand delimiter)
      (?>              # Start of an atomic group
        (?!{{|}}).|    # Any char not starting {{ or }} char sequence, or
        {{(?<DEPTH>)|  # {{ and a value pushed on to DEPTH group stack, or
        }}(?<-DEPTH>)  # }} and a value popped from the DEPTH group stack
      )*               # Zero or more repetitions of the atomic group patterns
    }}                 # }} substring
    (?(DEPTH)(?!))     # Conditional construct failing the match if DEPTH stack is not empty
  )                    # End of the results group
)                      # End of the lookahead

见regex演示。

C#声明：

Regex reg = new Regex(@"
    (?=                  # Start of a positive lookahead to enable overlapping matches
      (?<results>          # The group storing the results
        {{                 # {{ (left-hand delimiter)
          (?>              # Start of an atomic group
            (?!{{|}}).|    # Any char not starting {{ or }} char sequence, or
            {{(?<DEPTH>)|  # {{ and a value pushed on to DEPTH group stack, or
            }}(?<-DEPTH>)  # }} and a value popped from the DEPTH group stack
          )*               # Zero or more repetitions of the atomic group patterns
        }}                 # }} substring
        (?(DEPTH)(?!))     # Conditional construct failing the match if DEPTH stack is not empty
      )                    # End of the results group
    )                      # End of the lookahead", 
    RegexOptions.IgnorePatternWhitespace | RegexOptions.Singleline);
var results = reg.Matches(text).Cast<Match>().Select(x => x.Groups["results"].Value);