Release Update

src/Gemstone/Common.cs

@@ -46,7 +46,6 @@
 
 using System;
 using System.Collections;
-using System.Collections.Generic;
 using System.ComponentModel;
 using System.Diagnostics;
 using System.Globalization;
@@ -616,7 +615,10 @@ public static ulong GetTotalPhysicalMemory()
     {
         if (IsPosixEnvironment)
         {
-            string output = Command.Execute("awk", "'/MemTotal/ {print $2}' /proc/meminfo").StandardOutput;
+            // Pass the awk program as a single argument using double quotes (which the .NET argument tokenizer
+            // groups and strips); single quotes are shell-only syntax and, since the command is executed without
+            // a shell, would be passed to awk literally - causing "awk: unexpected character '''".
+            string output = Command.Execute("awk", "\"/MemTotal/ {print $2}\" /proc/meminfo").StandardOutput;
             return ulong.Parse(output) * SI2.Kilo;
         }
 
@@ -632,7 +634,9 @@ public static ulong GetAvailablePhysicalMemory()
     {
         if (IsPosixEnvironment)
         {
-            string output = Command.Execute("awk", "'/MemAvailable/ {print $2}' /proc/meminfo").StandardOutput;
+            // Double-quote the awk program so it is passed as a single argument; single quotes are shell-only
+            // syntax and would reach awk literally when executed without a shell (see GetTotalPhysicalMemory).
+            string output = Command.Execute("awk", "\"/MemAvailable/ {print $2}\" /proc/meminfo").StandardOutput;
             return ulong.Parse(output) * SI2.Kilo;
         }
 

src/Gemstone/Identity/UserInfoUnix.cs

@@ -23,13 +23,8 @@
 
 using System;
 using System.Collections.Generic;
-using System.Diagnostics.CodeAnalysis;
-using System.Globalization;
-using System.IO;
 using System.Linq;
 using System.Runtime.InteropServices;
-using System.Security;
-using System.Security.Principal;
 using System.Text;
 using Gemstone.Collections.CollectionExtensions;
 using Gemstone.Console;

src/Gemstone/Identity/UserInfoWindows.cs

@@ -25,7 +25,6 @@
 using System.Collections;
 using System.Collections.Generic;
 using System.DirectoryServices;
-using System.Linq;
 using System.Management;
 using System.Reflection;
 using System.Runtime.InteropServices;
@@ -793,7 +792,7 @@
         string getGroupPrefix(string accountName)
         {
             string[] parts = accountName.Split('\\');
             return parts.Length == 2 ? parts[0].Trim() : null;
         }
 
         //using (Logger.SuppressFirstChanceExceptionLogMessages())
@@ -812,7 +811,7 @@
                     // Don't include "BUILTIN\" prefix for group names so they are easily comparable
                     builtInGroups.Add(groupAccount.ToString().Substring((BuiltInGroupName ?? "BUILTIN").Length + 1));
                 }
                 catch (IdentityNotMappedException ex)
                 {
                     // TODO: Exposes as captured exception event
                     //Logger.SwallowException(ex, "WindowsUserInfo.cs Static Constructor: Failed to lookup identity", builtInSid.ToString());
@@ -868,8 +867,8 @@
     {
         Type type = largeInteger.GetType();
 
         int highPart = (int)type.InvokeMember("HighPart", BindingFlags.GetProperty, null, largeInteger, null);
         int lowPart = (int)type.InvokeMember("LowPart", BindingFlags.GetProperty, null, largeInteger, null);
 
         return (long)highPart << 32 | (uint)lowPart;
     }
@@ -1008,7 +1007,7 @@
         }
         catch (COMException)
         {
             accountEntry = null;
             return false;
         }
     }

src/Gemstone/Serialization.cs

@@ -73,29 +73,28 @@ private class LegacySerializationBinder : SerializationBinder
             // Perform namespace transformations that occurred when migrating to the Grid Solutions Framework
             // from various older versions of code with different namespaces
             string newTypeName = typeName
-                .Replace("TVA.", "Gemstone.")
-                .Replace("GSF.TimeSeries.", "Gemstone.Timeseries.")
-                .Replace("GSF.", "Gemstone.")
-                .Replace("TimeSeriesFramework.", "Gemstone.Timeseries.")
+                .Replace(".TimeSeries.", ".Timeseries.")                    // Updated Gemstone casing for timeseries namespace
+                .Replace("GSF.Units.EE", "Gemstone.Numeric.EE")             // Gemstone assembly relocation of EE namespace
+                .Replace("TVA.Units.EE", "Gemstone.Numeric.EE")             // Gemstone assembly relocation of EE namespace
+                .Replace("TimeSeriesFramework.", "Gemstone.Timeseries.")    // 2007 TVA Code Library "TimeSeriesFramework" namespace
                 .Replace("ConnectionTester.", "Gemstone.PhasorProtocols.")  // PMU Connection Tester namespace
-                .Replace("TVA.Phasors.", "Gemstone.PhasorProtocols.")       // 2007 TVA Code Library namespace
-                .Replace("Tva.Phasors.", "Gemstone.PhasorProtocols.")       // 2008 TVA Code Library namespace
-                .Replace("BpaPdcStream", "BPAPDCstream")                    // 2013 GSF uppercase phasor protocol namespace
-                .Replace("FNet", "FNET")                                    // 2013 GSF uppercase phasor protocol namespace
-                .Replace("Iec61850_90_5", "IEC61850_90_5")                  // 2013 GSF uppercase phasor protocol namespace
-                .Replace("Ieee1344", "IEEE1344")                            // 2013 GSF uppercase phasor protocol namespace
-                .Replace("IeeeC37_118", "IEEEC37_118");                     // 2013 GSF uppercase phasor protocol namespace
+                .Replace("TVA.Phasors.", "Gemstone.PhasorProtocols.")       // 2007 TVA Code Library "Phasors" namespace
+                .Replace("Tva.Phasors.", "Gemstone.PhasorProtocols.")       // 2008 TVA Code Library "Phasors" namespace
+                .Replace("GSF.", "Gemstone.")                               // 2013+ GSF root namespace
+                .Replace("TVA.", "Gemstone.")                               // 2007 TVA Code Library root namespace
+                .Replace("Tva.", "Gemstone.")                               // 2008 TVA Code Library root namespace
+                .Replace("BpaPdcStream", "BPAPDCstream")                    // 2013 updated GSF casing for phasor protocol namespace
+                .Replace("FNet", "FNET")                                    // 2013 updated GSF casing for phasor protocol namespace
+                .Replace("Iec61850_90_5", "IEC61850_90_5")                  // 2013 updated GSF casing for phasor protocol namespace
+                .Replace("Ieee1344", "IEEE1344")                            // 2013 updated GSF casing for phasor protocol namespace
+                .Replace("IeeeC37_118", "IEEEC37_118");                     // 2013 updated GSF casing for phasor protocol namespace
 
-            // Check for 2009 TVA Code Library namespace
+            // Check for 2009 TVA Code Library "PhasorProtocols" namespace
             if (newTypeName.StartsWith("PhasorProtocols", StringComparison.Ordinal))
                 newTypeName = "Gemstone." + newTypeName;
 
-            // Check for 2014 LineFrequency type
-            if (newTypeName.Equals("GSF.PhasorProtocols.LineFrequency", StringComparison.Ordinal))
-                newTypeName = "Gemstone.Numeric.EE.LineFrequency";
-
-            // Check for GSF LineFrequency type
-            if (newTypeName.Equals("GSF.Units.EE.LineFrequency", StringComparison.Ordinal))
+            // Check for 2014 LineFrequency type (note: already replaced GSF with Gemstone here)
+            if (newTypeName.Equals("Gemstone.PhasorProtocols.LineFrequency", StringComparison.Ordinal))
                 newTypeName = "Gemstone.Numeric.EE.LineFrequency";
 
             try
@@ -128,8 +127,45 @@ private class LegacySerializationBinder : SerializationBinder
             // No type found; return null
             return null;
         }
+
+        /// <summary>
+        /// Controls the binding of a serialized object to a type name and assembly name during serialization.
+        /// </summary>
+        /// <remarks>
+        /// Maps current Gemstone types back to their legacy GSF names so that XML written by Gemstone code
+        /// remains readable by .NET Framework consumers (PMU Connection Tester, older openPDC builds, etc.)
+        /// that only know the GSF-era types. The Gemstone-side reader translates these names back via
+        /// <see cref="BindToType(string, string)"/>, so round-trip identity is preserved.
+        /// </remarks>
+        /// <param name="serializedType">The runtime type being serialized.</param>
+        /// <param name="assemblyName">On return, the legacy assembly name to emit.</param>
+        /// <param name="typeName">On return, the legacy fully-qualified type name to emit.</param>
+        public override void BindToName(Type serializedType, out string? assemblyName, out string? typeName)
+        {
+            string fullName = serializedType.FullName ?? serializedType.Name;
+            string typeNamespace = serializedType.Namespace ?? string.Empty;
+            string runtimeAssembly = serializedType.Assembly.GetName().Name ?? string.Empty;
+
+            // Special case: Gemstone.Numeric.EE.* types (LineFrequency, PhasorType, etc.) historically
+            // lived in the GSF.Units.EE namespace inside the GSF.Core assembly.
+            if (typeNamespace == "Gemstone.Numeric.EE" || typeNamespace.StartsWith("Gemstone.Numeric.EE.", StringComparison.Ordinal))
+            {
+                typeName = fullName.Replace("Gemstone.Numeric.EE", "GSF.Units.EE", StringComparison.Ordinal);
+                assemblyName = "GSF.Core";
+                return;
+            }
+
+            // General case: Gemstone.* → GSF.* (and Timeseries → TimeSeries casing flip).
+            typeName = fullName
+                .Replace("Gemstone.Timeseries.", "GSF.TimeSeries.", StringComparison.Ordinal)
+                .Replace("Gemstone.", "GSF.", StringComparison.Ordinal);
+
+            assemblyName = runtimeAssembly
+                .Replace("Gemstone.Timeseries", "GSF.TimeSeries", StringComparison.Ordinal)
+                .Replace("Gemstone.", "GSF.", StringComparison.Ordinal);
+        }
     }
-    
+
     /// <summary>
     /// Gets <see cref="SerializationInfo"/> value for specified <paramref name="name"/>; otherwise <paramref name="defaultValue"/>.
     /// </summary>

src/Gemstone/StringExtensions/FuzzyStrings/LongestCommonSubstring.cs

@@ -21,7 +21,6 @@
 //
 //******************************************************************************************************
 
-using System;
 using System.Diagnostics.CodeAnalysis;
 using System.Text;
 

src/Gemstone/StringExtensions/StringExtensions.cs

@@ -250,15 +250,19 @@ public static T ConvertToType<T>(this string? value, CultureInfo? culture)
     /// </remarks>
     public static object? ConvertToType(this string? value, Type type, CultureInfo? culture, bool suppressException = true)
     {
-        // Don't proceed further if string is empty.
+        // Handle the trivial string-to-string conversion
+        if (type == typeof(string))
+            return value;
+
+        // Don't proceed further if string is empty
         if (string.IsNullOrEmpty(value))
             return null;
 
-        // Initialize return type if not specified.
+        // There is no way to guess what type the user intended to convert to
         if (type is null)
             throw new ArgumentNullException(nameof(type));
 
-        // Initialize culture info if not specified.
+        // Initialize culture info if not specified
         culture ??= CultureInfo.InvariantCulture;
 
         // Handle array types as a special case