Updates

.install/library.sh

@@ -160,3 +160,73 @@ _isKVM() {
         echo 1
     fi
 }
+
+# _replaceInFile $startMarket $endMarker $customtext $targetFile
+_replaceInFile() {
+
+    # Set function parameters
+    start_string=$1
+    end_string=$2
+    new_string="$3"
+    file_path="$4"
+
+    # Counters
+    start_line_counter=0
+    end_line_counter=0
+    start_found=0
+    end_found=0
+
+    if [ -f $file_path ] ;then
+
+        # Detect Start String
+        while read -r line
+        do
+            ((start_line_counter++))
+            if [[ $line = *$start_string* ]]; then
+                # echo "Start found in $start_line_counter"
+                start_found=$start_line_counter
+                break
+            fi 
+        done < "$file_path"
+
+        # Detect End String
+        while read -r line
+        do
+            ((end_line_counter++))
+            if [[ $line = *$end_string* ]]; then
+                # echo "End found in $end_line_counter"
+                end_found=$end_line_counter
+                break
+            fi 
+        done < "$file_path"
+
+        # Check that deliminters exists
+        if [[ "$start_found" == "0" ]] ;then
+            echo "ERROR: Start deliminter not found."
+            sleep 2
+        fi
+        if [[ "$end_found" == "0" ]] ;then
+            echo "ERROR: End deliminter not found."
+            sleep 2
+        fi
+
+        # Replace text between delimiters
+        if [[ ! "$start_found" == "0" ]] && [[ ! "$end_found" == "0" ]] && [ "$start_found" -le "$end_found" ] ;then
+            # Remove the old line
+            ((start_found++))
+
+            if [ ! "$start_found" == "$end_found" ] ;then    
+                ((end_found--))
+                sed -i "$start_found,$end_found d" $file_path
+            fi
+            # Add the new line
+            sed -i "$start_found i $new_string" $file_path
+        else
+            echo "ERROR: Delimiters syntax."
+            sleep 2
+        fi
+    else
+        echo "ERROR: Target file not found."
+        sleep 2
+    fi
+}