Add Slovenian number to words.

src/Humanizer.Tests/Humanizer.Tests.csproj

@@ -115,6 +115,7 @@
     <Compile Include="Localisation\pt-BR\TimeSpanHumanizeTests.cs" />
     <Compile Include="Localisation\sk\TimeSpanHumanizeTests.cs" />
     <Compile Include="Localisation\sl\DateHumanizeTests.cs" />
+    <Compile Include="Localisation\sl\NumberToWordsTests.cs" />
     <Compile Include="Localisation\sl\TimeSpanHumanizeTests.cs" />
     <Compile Include="Localisation\sr-Latn\DateHumanizeTests.cs" />
     <Compile Include="Localisation\sr-Latn\TimeSpanHumanizeTests.cs" />

src/Humanizer.Tests/Localisation/sl/NumberToWordsTests.cs

@@ -0,0 +1,56 @@
+using Xunit;
+using Xunit.Extensions;
+
+namespace Humanizer.Tests.Localisation.sl
+{
+    public class NumberToWordsTests : AmbientCulture
+    {
+        public NumberToWordsTests() : base("sl-SI") { }
+
+        [Theory]
+        [InlineData(0, "nič")]
+        [InlineData(1, "ena")]
+        [InlineData(2, "dva")]
+        [InlineData(3, "tri")]
+        [InlineData(4, "štiri")]
+        [InlineData(5, "pet")]
+        [InlineData(6, "šest")]
+        [InlineData(7, "sedem")]
+        [InlineData(8, "osem")]
+        [InlineData(9, "devet")]
+        [InlineData(10, "deset")]
+        [InlineData(20, "dvajset")]
+        [InlineData(30, "trideset")]
+        [InlineData(40, "štirideset")]
+        [InlineData(50, "petdeset")]
+        [InlineData(60, "šestdeset")]
+        [InlineData(70, "sedemdeset")]
+        [InlineData(80, "osemdeset")]
+        [InlineData(90, "devetdeset")]
+        [InlineData(100, "sto")]
+        [InlineData(200, "dvesto")]
+        [InlineData(1000, "tisoč")]
+        [InlineData(10000, "deset tisoč")]
+        [InlineData(100000, "sto tisoč")]
+        [InlineData(1000000, "milijon")]
+        [InlineData(10000000, "deset milijonov")]
+        [InlineData(100000000, "sto milijonov")]
+        [InlineData(1000000000, "milijarda")]
+        [InlineData(2000000000, "dve milijardi")]
+        [InlineData(122, "sto dvaindvajset")]
+        [InlineData(3501, "tri tisoč petsto ena")]
+        [InlineData(111, "sto enajst")]
+        [InlineData(1112, "tisoč sto dvanajst")]
+        [InlineData(11213, "enajst tisoč dvesto trinajst")]
+        [InlineData(121314, "sto enaindvajset tisoč tristo štirinajst")]
+        [InlineData(2132415, "dva milijona sto dvaintrideset tisoč štiristo petnajst")]
+        [InlineData(12345516, "dvanajst milijonov tristo petinštirideset tisoč petsto šestnajst")]
+        [InlineData(751633617, "sedemsto enainpetdeset milijonov šeststo triintrideset tisoč šeststo sedemnajst")]
+        [InlineData(1111111118, "milijarda sto enajst milijonov sto enajst tisoč sto osemnajst")]
+        [InlineData(-751633619, "minus sedemsto enainpetdeset milijonov šeststo triintrideset tisoč šeststo devetnajst")]
+        public void ToWords(int number, string expected)
+        {
+            Assert.Equal(expected, number.ToWords());
+        }
+    }
+}

src/Humanizer/Humanizer.csproj

@@ -56,6 +56,7 @@
     <Compile Include="GrammaticalGender.cs" />
     <Compile Include="Localisation\GrammaticalNumber\RussianGrammaticalNumber.cs" />
     <Compile Include="Localisation\GrammaticalNumber\RussianGrammaticalNumberDetector.cs" />
+    <Compile Include="Localisation\NumberToWords\SlovenianNumberToWordsConverter.cs" />
     <Compile Include="Localisation\NumberToWords\DutchNumberToWordsConverter.cs" />
     <Compile Include="Localisation\NumberToWords\DefaultNumberToWordsConverter.cs" />
     <Compile Include="Localisation\NumberToWords\GermanNumberToWordsConverter.cs" />

src/Humanizer/Localisation/NumberToWords/SlovenianNumberToWordsConverter.cs

@@ -0,0 +1,81 @@
+using System.Collections.Generic;
+
+namespace Humanizer.Localisation.NumberToWords {
+   internal class SlovenianNumberToWordsConverter : DefaultNumberToWordsConverter {
+      private static readonly string[] UnitsMap = { "niè", "ena", "dva", "tri", "štiri", "pet", "šest", "sedem", "osem", "devet", "deset", "enajst", "dvanajst", "trinajst", "štirinajst", "petnajst", "šestnajst", "sedemnajst", "osemnajst", "devetnajst" };
+      private static readonly string[] TensMap = { "niè", "deset", "dvajset", "trideset", "štirideset", "petdeset", "šestdeset", "sedemdeset", "osemdeset", "devetdeset" };
+
+      public override string Convert(int number) {
+         if (number == 0)
+            return "niè";
+
+         if (number < 0)
+            return string.Format("minus {0}", Convert(-number));
+
+         var parts = new List<string>();
+
+         var billions = number / 1000000000;
+         if (billions > 0) {
+            parts.Add(Part("milijarda", "dve milijardi", "{0} milijarde", "{0} milijard", billions));
+            number %= 1000000000;
+            if (number > 0)
+               parts.Add(" ");
+         }
+
+         var millions = number / 1000000;
+         if (millions > 0) {
+            parts.Add(Part("milijon", "dva milijona", "{0} milijone", "{0} milijonov", millions));
+            number %= 1000000;
+            if (number > 0)
+               parts.Add(" ");
+         }
+
+         var thousands = number / 1000;
+         if (thousands > 0) {
+            parts.Add(Part("tisoè", "dva tisoè", "{0} tisoè", "{0} tisoè", thousands));
+            number %= 1000;
+            if (number > 0)
+               parts.Add(" ");
+         }
+
+         var hundreds = number / 100;
+         if (hundreds > 0) {
+            parts.Add(Part("sto", "dvesto", "{0}sto", "{0}sto", hundreds));
+            number %= 100;
+            if (number > 0)
+               parts.Add(" ");
+         }
+
+         if (number > 0) {
+            if (number < 20) {
+               if (number > 1)
+                  parts.Add(UnitsMap[number]);
+               else
+                  parts.Add("ena");
+            }
+            else {
+               var units = number % 10;
+               if (units > 0)
+                  parts.Add(string.Format("{0}in", UnitsMap[units]));
+
+               parts.Add(TensMap[number / 10]);
+            }
+         }
+
+         return string.Join("", parts);
+      }
+
+      private string Part(string singular, string dual, string trialQuadral, string plural, int number) {
+         if (number == 1)
+            return singular;
+
+         else if (number == 2)
+            return dual;
+
+         else if (number == 3 || number == 4)
+            return string.Format(trialQuadral, Convert(number));
+
+         return string.Format(plural, Convert(number));
+      }
+   }
+}

src/Humanizer/NumberToWordsExtension.cs

@@ -24,6 +24,7 @@ public static class NumberToWordsExtension
                 {"nl", () => new DutchNumberToWordsConverter()},
                 {"he", () => new HebrewNumberToWordsConverter()},
                 {"de", () => new GermanNumberToWordsConverter()},
+                {"sl", () => new SlovenianNumberToWordsConverter()}
             };
 
         /// <summary>