Custom Simple Data pluralizer; makes an attempt to properly handle words ending in "y".

gistfile1.txt

using System;
using Simple.Data;

/// <summary>
/// Custom Simple Data pluralizer; makes an attempt to properly handle words ending in "y".
/// </summary>
public class Pluralizer : IPluralizer
{
    public bool IsSingular(string word) { return !IsPlural(word); }

    public bool IsPlural(string word) { return word.EndsWith("s", StringComparison.InvariantCultureIgnoreCase); }

    public string Pluralize(string word)
    {
        if (!word.EndsWith("y", StringComparison.InvariantCultureIgnoreCase)
            || word.EndsWith("ey", StringComparison.InvariantCultureIgnoreCase)
            || word.EndsWith("ay", StringComparison.InvariantCultureIgnoreCase)
            || word.EndsWith("oy", StringComparison.InvariantCultureIgnoreCase))
        {
            return string.Concat(word, "s");
        }
        return string.Concat(word.Substring(0, word.Length - 1), "ies");
    }

    public string Singularize(string word)
    {
        if (word.EndsWith("ies", StringComparison.InvariantCultureIgnoreCase))
        {
            return string.Concat(word.Substring(0, word.Length - 3), "y");
        }
        return word.EndsWith("s", StringComparison.InvariantCultureIgnoreCase)
                   ? word.Substring(0, word.Length - 1)
                   : word;
    }
}