正则表达式在C＃中匹配和拆分字符串

Question

I have some ASCII documents in the following format:

[section heading]
paragraphs......

[section heading]
paragraphs......
...

Note: heading text are always enclosed in some specific pattern (eg [ ] in the above example)

I want to split the file into separate sections (each with a heading and the content ).

What would be the most efficient way to parse the above document?

Using Regex.Match() I can extract the headings, but not the subsequent text content.

Using Regex.Split() I can grab the content, but not the related headings.

Is it possible combine these two Regex methods to parse the document? Are there better ways to achieve the same?

Answer 1

Try this:

string search = "\[([\w ]+)\]([^\[]*)";
foreach (Match match in Regex.Matches(yourtext, search))
    {
        string heading = match.Groups[1];
        string text = match.Groups[2];
    }

The regular expression capture both the heading and the paragraph. Thanks to capturing groups (between parentheses), you can extract both of them by iterating over the matches.

Answer 2

(\[[^\]]*\])\n([\s\S]*?)(?=\n\[|$)

You can try this.Grab the group 1 and group 2.See demo.

https://regex101.com/r/gU4aG0/1