Add GPL modules

MediaBrowser.Model/Extensions/StringHelper.cs

@@ -0,0 +1,57 @@
+using System;
+using System.Text;
+
+namespace MediaBrowser.Model.Extensions
+{
+    /// <summary>
+    /// Isolating these helpers allow this entire project to be easily converted to Java
+    /// </summary>
+    public static class StringHelper
+    {
+        /// <summary>
+        /// Equalses the ignore case.
+        /// </summary>
+        /// <param name="str1">The STR1.</param>
+        /// <param name="str2">The STR2.</param>
+        /// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
+        public static bool EqualsIgnoreCase(string str1, string str2)
+        {
+            return string.Equals(str1, str2, StringComparison.OrdinalIgnoreCase);
+        }
+
+        /// <summary>
+        /// Replaces the specified STR.
+        /// </summary>
+        /// <param name="str">The STR.</param>
+        /// <param name="oldValue">The old value.</param>
+        /// <param name="newValue">The new value.</param>
+        /// <param name="comparison">The comparison.</param>
+        /// <returns>System.String.</returns>
+        public static string Replace(this string str, string oldValue, string newValue, StringComparison comparison)
+        {
+            var sb = new StringBuilder();
+
+            var previousIndex = 0;
+            var index = str.IndexOf(oldValue, comparison);
+
+            while (index != -1)
+            {
+                sb.Append(str.Substring(previousIndex, index - previousIndex));
+                sb.Append(newValue);
+                index += oldValue.Length;
+
+                previousIndex = index;
+                index = str.IndexOf(oldValue, index, comparison);
+            }
+
+            sb.Append(str.Substring(previousIndex));
+
+            return sb.ToString();
+        }
+
+        public static string FirstToUpper(this string str)
+        {
+            return string.IsNullOrEmpty(str) ? "" : str.Substring(0, 1).ToUpper() + str.Substring(1);
+        }
+    }
+}