Parses a camel cased or pascal cased string and returns an array of the words within the string. - CSharp System

CSharp examples for System:String Case

  1. HOME
  2. CSharp
  3. System
  4. String Case

Description

Parses a camel cased or pascal cased string and returns an array of the words within the string.

Demo Code


using System.Text;
using System.Linq;
using System.Collections.Generic;
using System;//from ww w  .ja va 2  s. c om

public class Main{
        /// <summary>
		/// Parses a camel cased or pascal cased string and returns an array
		/// of the words within the string.
		/// </summary>
		/// <example>
		/// The string "PascalCasing" will return an array with two
		/// elements, "Pascal" and "Casing".
		/// </example>
		/// <param name="source"></param>
		/// <returns></returns>
		public static string[] SplitByCamelCase(this string source)
		{
			if (source == null)
				return new string[] { }; //Return empty array.

			if (source.Length == 0)
				return new string[] { "" };

			List<string> words = new List<string>();
			int wordStartIndex = 0;

			char[] letters = source.ToCharArray();
			bool lastWasUpper = char.IsUpper(letters[0]);
			// Skip the first letter. we don't care what case it is.
			for (int i = 1; i < letters.Length; i++)
			{
				if ((!lastWasUpper && char.IsUpper(letters[i])) ||
					(lastWasUpper && char.IsUpper(letters[i]) && i + 1 < letters.Length && char.IsLower(letters[i + 1])))
				{
					lastWasUpper = true;
					//Grab everything before the current index.
					words.Add(new String(letters, wordStartIndex, i - wordStartIndex));
					wordStartIndex = i;
				}
				else if (!char.IsUpper(letters[i]))
					lastWasUpper = false;
			}
			//We need to have the last word.
			words.Add(new String(letters, wordStartIndex, letters.Length - wordStartIndex));

			//Copy to a string array.
			return words.ToArray();
		}
}

Related Tutorials