Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

C# ProperCase function that handles McDonalde

Posted on 2004-10-03
2
Medium Priority
?
918 Views
Last Modified: 2008-01-09
I need a ProperCase function that handles McDonald and ONeils?
I have a 'standard' on. Does any one have one that converts  MCDONALD to McDonald ?
TIA
0
Comment
Question by:JElster
  • 2
2 Comments
 
LVL 6

Accepted Solution

by:
der_jth earned 300 total points
ID: 12212933
I didn't have one, but writing it was an interesting challenge :-) It certainly isn't one of the fastest, but it's probably one of the most readable and configurable ones. Tailor to your needs. The algorithm isn't exactly perfect, but I couldn't come up with a situation where the flaws would've mattered in practice.


using System.Text.RegularExpressions;
...

// CONFIGURATION:

// The following words will always be in lower case (except in the start of the string)
static string[] lowerCaseWords = { "of", "the", "and", "or", "a", "an", "von" };

// The following prefixes will cause their next character to be uppercased
// Note: Keep the first character uppercase when defining these; all else must be in lowercase
static string[] upperCasePrefixes = { "Mc", "O'" };

// The following words will be always presented in the case they have here.
static string[] fixedCaseWords = { "USA", "NATO", "Mbit" };



/// <summary>
/// Converts the given string into ProperCase.
/// </summary>
/// <param name="original">The original string, f.e. "THE EYE OF THE TIGER"</param>
/// <returns>The string converted into ProperCase, f.e. "The Eye of the Tiger"</returns>
public static string ProperCase(string original) {

  if (original == null || original.Length == 0) return "";

  // Run the original through the massage word-by-word
  string result =
    Regex.Replace(original.ToLower(), @"\b(\w+)\b", new MatchEvaluator(HandleSingleWord));

  // Always uppercase the first character
  return Char.ToUpper(result[0]) + (result.Length > 1 ? result.Substring(1) : "");
}


// This helper method properizes (sp?) the case of a single word (regex match)
// NOTE: The input is in all lowercase as forced by the ProperCase method.
private static string HandleSingleWord(Match m) {

  string word = m.Groups[1].Value;

  // Is this word defined as all-lowercase?
  foreach (string lcw in lowerCaseWords)
    if (word == lcw)
      return word;

  // Is this word defined as a fixed-case word?
  foreach (string fcw in fixedCaseWords)
    if (String.Compare(word, fcw, true) == 0)
      return fcw;

  // Ok, this is a normal word; uppercase the first letter
  if (word.Length == 1)
    return Char.ToUpper(word[0]).ToString();
  word = Char.ToUpper(word[0]) + word.Substring(1);

  // Check if this word starts with one of the uppercasing prefixes
  // Note: Only one of the uppercasing prefixes is applies
  foreach (string ucPrefix in upperCasePrefixes)
    if (word.StartsWith(ucPrefix) && word.Length > ucPrefix.Length)
      return word.Substring(0, ucPrefix.Length) +
              Char.ToUpper(word[ucPrefix.Length]) +
              (word.Length > ucPrefix.Length + 1
                ? word.Substring(ucPrefix.Length + 1)
                : "");

  return word;
}
0
 
LVL 6

Expert Comment

by:der_jth
ID: 12212949
Actually, that Mbit was a stupid example. Substitute "MHz" to see some real effect. :-)
0

Featured Post

Hire Technology Freelancers with Gigs

Work with freelancers specializing in everything from database administration to programming, who have proven themselves as experts in their field. Hire the best, collaborate easily, pay securely, and get projects done right.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article introduced a TextBox that supports transparent background.   Introduction TextBox is the most widely used control component in GUI design. Most GUI controls do not support transparent background and more or less do not have the…
Exception Handling is in the core of any application that is able to dignify its name. In this article, I'll guide you through the process of writing a DRY (Don't Repeat Yourself) Exception Handling mechanism, using Aspect Oriented Programming.
In response to a need for security and privacy, and to continue fostering an environment members can turn to for support, solutions, and education, Experts Exchange has created anonymous question capabilities. This new feature is available to our Pr…
Please read the paragraph below before following the instructions in the video — there are important caveats in the paragraph that I did not mention in the video. If your PaperPort 12 or PaperPort 14 is failing to start, or crashing, or hanging, …
Suggested Courses

886 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question