通过括号中的逗号分组串 [英] Grouping string by comma between brackets

问题描述

回应： HTTP： //stackoverflow.com/questions/1454913/regular-expression-to-find-a-string-included-between-two-characters-while-exclud



我正在寻找一个适用于我的字符串，包括括号中的正则表达式：

Response to : http://stackoverflow.com/questions/1454913/regular-expression-to-find-a-string-included-between-two-characters-while-exclud

Hi,I'm looking for a regex pattern that applies to my string including brackets:

[1,2,3， 4,5] [ABC，EF，G] [0,2,4b，Y7]

可以是任何东西，包括文字，数字，非字一起或分开。

[1,2,3,4,5] [abc,ef,g] [0,2,4b,y7]
could be anything including word,digit,non-word together or separated.

我想用 \ [（。*？）\]
，但是那是什么会给我用逗号分隔支架和子组字符串之间的小组，这样的结果可能是以下??

I wish to get the group between brackets by \[(.*?)\] but what is the regex pattern that will give me the group between brackets and sub-group strings separated by commas so that the result may be following ??

Group1 : 1,2,3,4,5
 Group1: 1
 Group2: 2
 Group3: 3
 Group4: 4
 Group5: 5

Group2 : abc,ef,g
 Group1: abc
 Group2: ef
 Group3: g

etc ..

感谢您的帮助。

推荐答案

我同意@Dav，你会在每个方括号组使用String.Split是最好的。

I agree with @Dav that you would be best using String.Split on each square-bracketed group.

不过，可以提取使用数据单正则表达式：

However, you can extract all the data using a single regular expression:

(?:\s*\[((.*?)(?:,(.+?))*)\])+

使用这个表达式，你必须处理所有每个捕获的组来获取所有数据。作为一个例子，在你的字符串运行下面的代码：

Using this expression, you will have to process all the captures of each group to get all the data. As an example, run the following code on your string:

var regex = new Regex(@"(?:\s*\[((.*?)(?:,(.+?))*)\])+");
var match = regex.Match(@"[1,2,3,4,5] [abc,ef,g] [0,2,4b,y7]");

for (var i = 1; i < match.Groups.Count; i++)
{
    var group = match.Groups[i];
    Console.WriteLine("Group " + i);

    for (var j = 0; j < group.Captures.Count; j++)
    {
        var capture = group.Captures[j];

        Console.WriteLine("  Capture " + j + ": " + capture.Value 
                                       + " at " + capture.Index);
    }
}

这将产生以下的输出：

Group 1
  Capture 0: 1,2,3,4,5 at 1
  Capture 1: abc,ef,g at 13
  Capture 2: 0,2,4b,y7 at 24
Group 2
  Capture 0: 1 at 1
  Capture 1: abc at 13
  Capture 2: 0 at 24
Group 3
  Capture 0: 2 at 3
  Capture 1: 3 at 5
  Capture 2: 4 at 7
  Capture 3: 5 at 9
  Capture 4: ef at 17
  Capture 5: g at 20
  Capture 6: 2 at 26
  Capture 7: 4b at 28
  Capture 8: y7 at 31

1组为您提供了每个方括号组的值，2组为您提供了每个方括号组与组相匹配的第一个项目3给你所有的后续项目。你将不得不看捕获的指标，以确定哪些项目属于每个方括号组。

Group 1 gives you the value of each square-bracketed group, group 2 gives you the first item matched in each square-bracketed group and group 3 gives you all the subsequent items. You will have to look at the indexes of the captures to determine which item belongs to each square-bracketed group.

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