(递归?)正则表达式删除空的xml标签 [英] (Recursive?) Regex to remove empty xml tags

问题描述

我想从 xml 文件中删除所有空标签.但是，我的选择非常有限，因此我想使用正则表达式(此处提供并在内部已知).

I'd like to remove all empty tags from an xml file. However, my options are very limited, so I'd like to use a regex (which is available and known internally here).

我对正则表达式删除它们变体中的空标签没有问题，但嵌套的空标签有点困难，因为我的正则表达式只会深入.

I have no problem with the regex to remove the empty tags in their variations, but the nested empty tags are a bit harder, as my regex will only go one deep.

我相信这是因为我的递归中的命名捕获组，但我无法修复它.

I believe it's because of the named capture group in my recursion, but I'm not able to fix it.

这是我目前所拥有的:这里

最好的问候和感谢，

劳伦特

推荐答案

试试这个

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            string xml = 
                "<root>" +
                    "<tag1>Good</tag1>" +
                    "<tag2 element=\"Good\"></tag2>" +
                    "<tag3 element=\"Good\" />" +
                    "<tag4></tag4>" +
                    "<tag13>" +
                    "</tag13>" +
                    "<tag5 />" +
                    "<tag6/>" +
                    "<tag7>" +
                        "<tag7.1>good</tag7.1>" +
                    "</tag7>" +
                    "<tag8>" +
                        "<tag8.1></tag8.1>" +
                    "</tag8>" +
                    "<tag9>" +
                        "<tag9.1 />" +
                    "</tag9>" +
                    "<tag10>" +
                        "<tag10.1/>" +
                    "</tag10>" +
                    "<tag10>" +
                        "<tag10.1>Wel iets</tag10.1>" +
                    "</tag10>" +
                    "<tag11>" +
                        "<tag11.1 element=\"Good\"/>" +
                    "</tag11>" +
                    "<tag12>" +
                        "<tag12.1></tag12.1>" +
                        "<tag12.2>" +
                            "<tag12.2.1></tag12.2.1>" +
                        "</tag12.2>" +
                    "</tag12>" +
                    "</root>";
            XElement root = XElement.Parse(xml);
            var deleteElements = root.Descendants().Where(x => (x.Descendants().Count() == 0) && (x.Attributes().Count() == 0) && (x.Value.Length == 0)).ToList();
            foreach (XElement deleteElement in deleteElements)
            {
                deleteElement.Remove();
            }
        }
    }
}
​

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