.NET - How can you split a "caps" delimited string into an array?

.net regex algorithm string pascalcasing
Matias Nino picture Matias Nino · Oct 1, 2008 · Viewed 21k times · Source

How do I go from this string: "ThisIsMyCapsDelimitedString"

...to this string: "This Is My Caps Delimited String"

Fewest lines of code in VB.net is preferred but C# is also welcome.

Cheers!

Answer

Markus Jarderot picture Markus Jarderot · Oct 1, 2008

I made this a while ago. It matches each component of a CamelCase name.

/([A-Z]+(?=$|[A-Z][a-z])|[A-Z]?[a-z]+)/g

For example:

"SimpleHTTPServer" => ["Simple", "HTTP", "Server"]
"camelCase" => ["camel", "Case"]

To convert that to just insert spaces between the words:

Regex.Replace(s, "([a-z](?=[A-Z])|[A-Z](?=[A-Z][a-z]))", "$1 ")

If you need to handle digits:

/([A-Z]+(?=$|[A-Z][a-z]|[0-9])|[A-Z]?[a-z]+|[0-9]+)/g

Regex.Replace(s,"([a-z](?=[A-Z]|[0-9])|[A-Z](?=[A-Z][a-z]|[0-9])|[0-9](?=[^0-9]))","$1 ")

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