Use invariant culture for all numeric conversions

src/Gemstone.COMTRADE/AnalogChannel.cs

@@ -153,21 +153,21 @@ public AnalogChannel(string lineImage, int version = 1999, bool targetFloatingPo
             if (parts.Length < 10 || !useRelaxedValidation && parts.Length != 10 && parts.Length != 13)
                 throw new InvalidOperationException($"Unexpected number of line image elements for analog channel definition: {parts.Length} - expected 10 or 13{Environment.NewLine}Image = {lineImage}");
 
-            Index = int.Parse(parts[0].Trim());
+            Index = int.Parse(parts[0].Trim(), CultureInfo.InvariantCulture);
             Name = parts[1];
             Units = parts[4];   // Assign Units before PhaseID
             PhaseID = parts[2];
             CircuitComponent = parts[3];
-            Multiplier = double.Parse(parts[5].Trim());
-            Adder = double.Parse(parts[6].Trim());
-            Skew = double.Parse(parts[7].Trim());
-            MinValue = double.Parse(parts[8].Trim());
-            MaxValue = double.Parse(parts[9].Trim());
+            Multiplier = double.Parse(parts[5].Trim(), CultureInfo.InvariantCulture);
+            Adder = double.Parse(parts[6].Trim(), CultureInfo.InvariantCulture);
+            Skew = double.Parse(parts[7].Trim(), CultureInfo.InvariantCulture);
+            MinValue = double.Parse(parts[8].Trim(), CultureInfo.InvariantCulture);
+            MaxValue = double.Parse(parts[9].Trim(), CultureInfo.InvariantCulture);
 
             if (parts.Length >= 13)
             {
-                PrimaryRatio = double.Parse(parts[10].Trim());
-                SecondaryRatio = double.Parse(parts[11].Trim());
+                PrimaryRatio = double.Parse(parts[10].Trim(), CultureInfo.InvariantCulture);
+                SecondaryRatio = double.Parse(parts[11].Trim(), CultureInfo.InvariantCulture);
                 ScalingIdentifier = parts[12].Trim()[0];
             }
         }
@@ -561,7 +561,7 @@ public override string ToString()
             // An,ch_id,ph,ccbm,uu,a,b,skew,min,max
             List<string> values = new()
             {
-                Index.ToString(),
+                Index.ToString(CultureInfo.InvariantCulture),
                 Name ?? string.Empty,
                 PhaseID,
                 CircuitComponent ?? string.Empty,

src/Gemstone.COMTRADE/DigitalChannel.cs

@@ -26,6 +26,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Globalization;
 using Gemstone.StringExtensions;
 #if NETSTANDARD
 using Newtonsoft.Json;
@@ -79,15 +80,15 @@ public DigitalChannel(string lineImage, int version = 1999, bool useRelaxedValid
 
             if (parts.Length >= 5)
             {
-                Index = int.Parse(parts[0].Trim());
+                Index = int.Parse(parts[0].Trim(), CultureInfo.InvariantCulture);
                 Name = parts[1];
                 PhaseID = parts[2];
                 CircuitComponent = parts[3];
                 NormalState = parts[4].Trim().ParseBoolean();
             }
             else
             {
-                Index = int.Parse(parts[0].Trim());
+                Index = int.Parse(parts[0].Trim(), CultureInfo.InvariantCulture);
                 Name = parts[1];
                 NormalState = parts[2].Trim().ParseBoolean();
             }
@@ -203,7 +204,7 @@ public override string ToString()
                 // Dn,ch_id,ph,ccbm,y
                 values = new List<string>
                 {
-                    Index.ToString(),
+                    Index.ToString(CultureInfo.InvariantCulture),
                     Name ?? string.Empty,
                     PhaseID ?? string.Empty,
                     CircuitComponent ?? string.Empty,
@@ -215,7 +216,7 @@ public override string ToString()
                 // Dn,ch_id,y
                 values = new List<string>
                 {
-                    Index.ToString(),
+                    Index.ToString(CultureInfo.InvariantCulture),
                     Name ?? string.Empty,
                     NormalState ? "1" : "0"
                 };

src/Gemstone.COMTRADE/Parser.cs

@@ -24,6 +24,7 @@
 //******************************************************************************************************
 
 using System;
+using System.Globalization;
 using System.IO;
 using System.Linq;
 using System.Text;
@@ -402,7 +403,7 @@ private bool ReadNextAscii()
             }
 
             // Parse row of data
-            uint sample = uint.Parse(elems[0]);
+            uint sample = uint.Parse(elems[0], CultureInfo.InvariantCulture);
 
             // Capture initial sample index - this handles cases where sample index does not start at zero
             if (m_initialSample == uint.MaxValue)
@@ -426,7 +427,7 @@ private bool ReadNextAscii()
 
             // Fall back on specified microsecond time
             if (Timestamp == DateTime.MinValue)
-                Timestamp = new DateTime(Ticks.FromMicroseconds(double.Parse(elems[1]) * m_schema!.TimeFactor) + m_schema.StartTime.Value);
+                Timestamp = new DateTime(Ticks.FromMicroseconds(double.Parse(elems[1], CultureInfo.InvariantCulture) * m_schema!.TimeFactor) + m_schema.StartTime.Value);
 
             // Apply timestamp offset to restore UTC timezone
             if (AdjustToUTC)
@@ -438,7 +439,7 @@ private bool ReadNextAscii()
             // Parse all record values
             for (int i = 0; i < Values.Length; i++)
             {
-                Values[i] = double.Parse(elems[i + 2]);
+                Values[i] = double.Parse(elems[i + 2], CultureInfo.InvariantCulture);
 
                 if (i < m_schema!.AnalogChannels?.Length)
                     Values[i] = AdjustValue(Values[i], i);

src/Gemstone.COMTRADE/SampleRate.cs

@@ -64,8 +64,8 @@ public SampleRate(string lineImage, bool useRelaxedValidation = false)
             if (parts.Length < 2 || (!useRelaxedValidation && parts.Length != 2))
                 throw new InvalidOperationException($"Unexpected number of line image elements for sample rate definition: {parts.Length} - expected 2{Environment.NewLine}Image = {lineImage}");
 
-            Rate = double.Parse(parts[0].Trim());
-            EndSample = long.Parse(parts[1].Trim());
+            Rate = double.Parse(parts[0].Trim(), CultureInfo.InvariantCulture);
+            EndSample = long.Parse(parts[1].Trim(), CultureInfo.InvariantCulture);
         }
 
         #endregion
@@ -76,7 +76,15 @@ public SampleRate(string lineImage, bool useRelaxedValidation = false)
         /// Converts <see cref="SampleRate"/> to its string format.
         /// </summary>
         public override string ToString() => // samp,endsamp
-            $"{Rate.ToString(CultureInfo.InvariantCulture)},{EndSample}";
+            Format($"{Rate},{EndSample}");
+
+        #endregion
+
+        #region [ Static ]
+
+        // Static Methods
+        private static string Format(FormattableString formattableString) =>
+            formattableString.ToString(CultureInfo.InvariantCulture);
 
         #endregion
     }

src/Gemstone.COMTRADE/Schema.cs

@@ -248,7 +248,7 @@ public Schema(string fileName, bool useRelaxedValidation)
             DeviceID = parts[1].Trim();
 
             if (parts.Length >= 3 && !string.IsNullOrWhiteSpace(parts[2]))
-                Version = int.Parse(parts[2].Trim());
+                Version = int.Parse(parts[2].Trim(), CultureInfo.InvariantCulture);
             else
                 Version = 1991;
 
@@ -258,9 +258,9 @@ public Schema(string fileName, bool useRelaxedValidation)
             if (parts.Length < 3 || (!useRelaxedValidation && parts.Length != 3))
                 throw new InvalidOperationException($"Unexpected number of line image elements for second configuration file line: {parts.Length} - expected 3{Environment.NewLine}Image = {lines[lineNumber - 1]}");
 
-            int totalChannels = int.Parse(parts[0].Trim());
-            int totalAnalogChannels = int.Parse(parts[1].Trim().Split('A')[0]);
-            int totalDigitalChannels = int.Parse(parts[2].Trim().Split('D')[0]);
+            int totalChannels = int.Parse(parts[0].Trim(), CultureInfo.InvariantCulture);
+            int totalAnalogChannels = int.Parse(parts[1].Trim().Split('A')[0], CultureInfo.InvariantCulture);
+            int totalDigitalChannels = int.Parse(parts[2].Trim().Split('D')[0], CultureInfo.InvariantCulture);
 
             if (totalChannels != totalAnalogChannels + totalDigitalChannels)
                 throw new InvalidOperationException($"Total defined channels must equal the sum of the total number of analog and digital channel definitions.{Environment.NewLine}Image = {lines[lineNumber - 1]}");
@@ -280,10 +280,10 @@ public Schema(string fileName, bool useRelaxedValidation)
             DigitalChannels = digitalChannels.ToArray();
 
             // Parse line frequency
-            NominalFrequency = double.Parse(lines[lineNumber++]);
+            NominalFrequency = double.Parse(lines[lineNumber++], CultureInfo.InvariantCulture);
 
             // Parse total number of sample rates
-            int totalSampleRates = int.Parse(lines[lineNumber++]);
+            int totalSampleRates = int.Parse(lines[lineNumber++], CultureInfo.InvariantCulture);
 
             if (totalSampleRates == 0)
                 totalSampleRates = 1;
@@ -310,7 +310,7 @@ public Schema(string fileName, bool useRelaxedValidation)
             AnalogChannels = analogLineImages.Select(lineImage => new AnalogChannel(lineImage, Version, targetFloatingPoint, useRelaxedValidation)).ToArray();
 
             // Parse time factor
-            TimeFactor = lineNumber < lines.Length ? double.Parse(lines[lineNumber++]) : 1;
+            TimeFactor = lineNumber < lines.Length ? double.Parse(lines[lineNumber++], CultureInfo.InvariantCulture) : 1;
 
             // Parse time information line
             if (lineNumber < lines.Length)
@@ -339,10 +339,10 @@ public Schema(string fileName, bool useRelaxedValidation)
                 parts = lines[lineNumber/*++*/].Split(',');
 
                 if (parts.Length > 0)
-                    TimeQualityIndicatorCode = (TimeQualityIndicatorCode)byte.Parse(parts[0], NumberStyles.HexNumber);
+                    TimeQualityIndicatorCode = (TimeQualityIndicatorCode)byte.Parse(parts[0], NumberStyles.HexNumber, CultureInfo.InvariantCulture);
 
                 if (parts.Length > 1)
-                    LeapSecondIndicator = (LeapSecondIndicator)byte.Parse(parts[1]);
+                    LeapSecondIndicator = (LeapSecondIndicator)byte.Parse(parts[1], CultureInfo.InvariantCulture);
             }
         }
 
@@ -523,11 +523,11 @@ public string FileImage
             {
                 StringBuilder fileImage = new();
 
-                void appendLine(string line)
+                void appendLine(FormattableString line)
                 {
                     // The standard .NET "Environment.NewLine" constant can just be a line feed on some operating systems,
                     // but the COMTRADE standard requires that end of line markers be both a carriage return and line feed.
-                    fileImage.Append(line);
+                    fileImage.Append(line.ToString(CultureInfo.InvariantCulture));
                     fileImage.Append(Writer.CRLF);
                 }
 
@@ -539,17 +539,17 @@ void appendLine(string line)
 
                 // Write analog definitions
                 for (int i = 0; i < TotalAnalogChannels; i++)
-                    appendLine(AnalogChannels![i].ToString());
+                    appendLine($"{AnalogChannels![i]}");
 
                 // Write digital definitions
                 for (int i = 0; i < TotalDigitalChannels; i++)
-                    appendLine(DigitalChannels![i].ToString());
+                    appendLine($"{DigitalChannels![i]}");
 
                 // Write line frequency
-                appendLine(NominalFrequency.ToString(CultureInfo.InvariantCulture));
+                appendLine($"{NominalFrequency}");
 
                 // Write total number of sample rates (zero signifies no fixed sample rates)
-                appendLine(TotalSampleRates.ToString());
+                appendLine($"{TotalSampleRates}");
 
                 int totalSampleRates = TotalSampleRates;
 
@@ -558,18 +558,18 @@ void appendLine(string line)
 
                 // Write sample rates
                 for (int i = 0; i < totalSampleRates; i++)
-                    appendLine(SampleRates![i].ToString());
+                    appendLine($"{SampleRates![i]}");
 
                 // Write timestamps
-                appendLine(StartTime.ToString());
-                appendLine(TriggerTime.ToString());
+                appendLine($"{StartTime}");
+                appendLine($"{TriggerTime}");
 
                 // Write file type
-                appendLine(FileType.ToString().ToUpper());
+                appendLine($"{FileType.ToString().ToUpper()}");
 
                 // Write time factor
                 if (Version >= 1999)
-                    appendLine(TimeFactor.ToString(CultureInfo.InvariantCulture));
+                    appendLine($"{TimeFactor}");
 
                 // Write per data set time info and state
                 if (Version >= 2013)

src/Gemstone.COMTRADE/TimeOffset.cs

@@ -23,6 +23,8 @@
 
 
 using System;
+using System.Globalization;
+
 #if NETSTANDARD
 using Newtonsoft.Json;
 #else
@@ -76,14 +78,14 @@ public TimeOffset(string lineImage)
                 switch (parts.Length)
                 {
                     case 1:
-                        validFormat = int.TryParse(lineImage, out hours);
+                        validFormat = int.TryParse(lineImage, NumberStyles.Integer, CultureInfo.InvariantCulture, out hours);
                         break;
                     case 2:
                     {
-                        validFormat = int.TryParse(parts[0], out hours);
+                        validFormat = int.TryParse(parts[0], NumberStyles.Integer, CultureInfo.InvariantCulture, out hours);
 
                         if (validFormat)
-                            validFormat = int.TryParse(parts[1], out minutes);
+                            validFormat = int.TryParse(parts[1], NumberStyles.Integer, CultureInfo.InvariantCulture, out minutes);
                         break;
                     }
                     default:
@@ -167,7 +169,15 @@ public long TickOffset
         /// Converts <see cref="TimeOffset"/> to its string format.
         /// </summary>
         public override string ToString() => 
-            NotApplicable ? "x" : $"{Hours}h{Minutes:00}";
+            NotApplicable ? "x" : Format($"{Hours}h{Minutes:00}");
+
+        #endregion
+
+        #region [ Static ]
+
+        // Static Methods
+        private static string Format(FormattableString formattableString) =>
+            formattableString.ToString(CultureInfo.InvariantCulture);
 
         #endregion
     }

src/Gemstone.COMTRADE/Timestamp.cs

@@ -59,11 +59,11 @@ public Timestamp(string lineImage)
 
             if (parts.Length == 4)
             {
-                double.TryParse(parts[^1], out milliseconds);
+                TryParse(parts[^1], out milliseconds);
                 parts = new[] { parts[0], parts[1], parts[2] };
             }
 
-            double.TryParse(parts[^1], out double seconds);
+            TryParse(parts[^1], out double seconds);
 
             seconds += milliseconds;
 
@@ -97,5 +97,16 @@ public override string ToString() =>
             Value.ToString("dd/MM/yyyy,HH:mm:ss.ffffff", CultureInfo.InvariantCulture);
 
         #endregion
+
+        #region [ Static ]
+
+        // Static Methods
+        private static bool TryParse(string s, out double result)
+        {
+            NumberStyles style = NumberStyles.Float | NumberStyles.AllowThousands;
+            return double.TryParse(s, style, CultureInfo.InvariantCulture, out result);
+        }
+
+        #endregion
     }
 }