add - Added last index of replacement overloads

---

We've added more overloads to the ReplaceLastOccurrence() function to accommodate cases where chars are involved.

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Type: add
Breaking: False
Doc Required: False
Backport Required: False
Part: 1/1

Textify.Tests/General/TextToolsTest.cs

@@ -80,6 +80,46 @@ public void TestReplaceLastOccurrence()
             Source.ShouldBe(expected);
         }
 
+        /// <summary>
+        /// Tests replacing last occurrence of a string
+        /// </summary>
+        [TestMethod]
+        [Description("Querying")]
+        public void TestReplaceLastOccurrenceChar()
+        {
+            string expected = "Nitrocid is awesome and its features are great!";
+            string Source = "Nitrocid is awesome and i great!";
+            Source = Source.ReplaceLastOccurrence('i', "its features are");
+            Source.ShouldBe(expected);
+        }
+
+        /// <summary>
+        /// Tests replacing last occurrence of a string
+        /// </summary>
+        [TestMethod]
+        [Description("Querying")]
+        public void TestReplaceLastOccurrenceWithChar()
+        {
+            string expected = "Nitrocid is awesome and S great!";
+            string Source = "Nitrocid is awesome and is great!";
+            string Target = "is";
+            Source = Source.ReplaceLastOccurrence(Target, 'S');
+            Source.ShouldBe(expected);
+        }
+
+        /// <summary>
+        /// Tests replacing last occurrence of a string
+        /// </summary>
+        [TestMethod]
+        [Description("Querying")]
+        public void TestReplaceLastOccurrenceCharWithChar()
+        {
+            string expected = "Nitrocid is awesome and S great!";
+            string Source = "Nitrocid is awesome and i great!";
+            Source = Source.ReplaceLastOccurrence('i', 'S');
+            Source.ShouldBe(expected);
+        }
+
         /// <summary>
         /// Tests replacing all specified occurrences of strings with a single string
         /// </summary>

Textify/General/TextTools.cs

@@ -541,6 +541,65 @@ public static string ReplaceLastOccurrence(this string source, string searchText
             return result;
         }
 
+        /// <summary>
+        /// Replaces last occurrence of a text in source string with the replacement
+        /// </summary>
+        /// <param name="source">A string which has the specified text to replace</param>
+        /// <param name="searchText">A string to be replaced</param>
+        /// <param name="replace">A character to replace</param>
+        /// <returns>String that has its last occurrence of text replaced</returns>
+        public static string ReplaceLastOccurrence(this string source, string searchText, char replace)
+        {
+            if (source is null)
+                throw new TextifyException("The source may not be null");
+            if (searchText is null)
+                throw new TextifyException("The search text may not be null");
+
+            int position = source.LastIndexOf(searchText);
+            if (position == -1)
+                return source;
+            string result = source.Remove(position, searchText.Length).Insert(position, $"{replace}");
+            return result;
+        }
+
+        /// <summary>
+        /// Replaces last occurrence of a text in source string with the replacement
+        /// </summary>
+        /// <param name="source">A string which has the specified text to replace</param>
+        /// <param name="searchText">A character to be replaced</param>
+        /// <param name="replace">A string to replace</param>
+        /// <returns>String that has its last occurrence of text replaced</returns>
+        public static string ReplaceLastOccurrence(this string source, char searchText, string replace)
+        {
+            if (source is null)
+                throw new TextifyException("The source may not be null");
+
+            int position = source.LastIndexOf(searchText);
+            if (position == -1)
+                return source;
+            string result = source.Remove(position, 1).Insert(position, replace);
+            return result;
+        }
+
+        /// <summary>
+        /// Replaces last occurrence of a text in source string with the replacement
+        /// </summary>
+        /// <param name="source">A string which has the specified text to replace</param>
+        /// <param name="searchText">A character to be replaced</param>
+        /// <param name="replace">A character to replace</param>
+        /// <returns>String that has its last occurrence of text replaced</returns>
+        public static string ReplaceLastOccurrence(this string source, char searchText, char replace)
+        {
+            if (source is null)
+                throw new TextifyException("The source may not be null");
+
+            int position = source.LastIndexOf(searchText);
+            if (position == -1)
+                return source;
+            string result = source.Remove(position, 1).Insert(position, $"{replace}");
+            return result;
+        }
+
         /// <summary>
         /// Get all indexes of a value in string
         /// </summary>