[2023/08/31]

* When creating a table object any leading or trailing white space will be automatically removed.
* When reading a spline from a DXF if its degree is larger than 10 it will be set to the maximun allowed.
* (fixed) The key of the references dictionary in the TableObjects must be case independent.

Author: haplokuon

TestDxfDocument/Program.cs

@@ -27,6 +27,7 @@ namespace TestDxfDocument
     /// </summary>
     public class Program
     {
+
         public static void Main()
         {
             DxfDocument doc = Test(@"sample.dxf"); 

doc/Changelog.txt

@@ -1,5 +1,10 @@
 ## Change history
 
+### [2023/08/31]
+* When creating a table object any leading or trailing white space will be automatically removed.
+* When reading a spline from a DXF if its degree is larger than 10 it will be set to the maximun allowed.
+* (fixed) The key of the references dictionary in the TableObjects must be case independent. 
+
 ### [2023/07/15]
 * (fixed) StackOverflow exception when cloning the extended data associated to an application registry with circular references.
 

netDxf/Collections/TableObjects.cs

@@ -57,7 +57,7 @@ protected TableObjects(DxfDocument document, string codeName, string handle)
             : base(codeName)
         {
             this.list = new Dictionary<string, T>(StringComparer.OrdinalIgnoreCase);
-            this.references = new Dictionary<string, DxfObjectReferences>();
+            this.references = new Dictionary<string, DxfObjectReferences>(StringComparer.OrdinalIgnoreCase);
             this.Owner = document;
 
             if (string.IsNullOrEmpty(handle))

netDxf/Entities/HatchPattern.cs

@@ -337,12 +337,16 @@ public static HatchPattern Load(string file, string patternName)
                 {
                     string line = reader.ReadLine();
                     if (line == null)
+                    {
                         throw new FileLoadException("Unknown error reading pat file.", file);
+                    }
                     line = line.Trim();
 
                     // every pattern definition starts with '*'
                     if (!line.StartsWith("*"))
+                    {
                         continue;
+                    }
 
                     // reading pattern name and description
                     int endName = line.IndexOf(','); // the first semicolon divides the name from the description that might contain more semicolons
@@ -352,21 +356,28 @@ public static HatchPattern Load(string file, string patternName)
                     // remove start and end spaces
                     description = description.Trim();
                     if (!name.Equals(patternName, StringComparison.OrdinalIgnoreCase))
+                    {
                         continue;
+                    }
 
                     // we have found the pattern name, the next lines of the file contains the pattern definition
                     line = reader.ReadLine();
                     if (line == null)
+                    {
                         throw new FileLoadException("Unknown error reading PAT file.", file);
+                    }
+
                     line = line.Trim();
 
                     pattern = new HatchPattern(name, description);
 
                     while (!string.IsNullOrEmpty(line) && !line.StartsWith("*") &&  !line.StartsWith(";"))
                     {
                         string[] tokens = line.Split(',');
-                        if(tokens.Length < 5)
+                        if (tokens.Length < 5)
+                        {
                             throw new FileLoadException("The hatch pattern definition lines must contain at least 5 values.", file);
+                        }
 
                         double angle = double.Parse(tokens[0], NumberStyles.Float, CultureInfo.InvariantCulture);
                         Vector2 origin = new Vector2(
@@ -390,11 +401,16 @@ public static HatchPattern Load(string file, string patternName)
                         pattern.LineDefinitions.Add(lineDefinition);
                         pattern.Type = HatchType.UserDefined;
 
-                        if(reader.EndOfStream) break;
+                        if (reader.EndOfStream)
+                        {
+                            break;
+                        }
 
                         line = reader.ReadLine();
                         if (line == null)
+                        {
                             throw new FileLoadException("Unknown error reading PAT file.", file);
+                        }
                         line = line.Trim();
                     } 
 

netDxf/Entities/Spline.cs

@@ -38,6 +38,8 @@ public class Spline :
     {
         #region private fields
 
+        public const short MaxDegree = 10;
+
         private readonly Vector3[] fitPoints;
         private readonly SplineCreationMethod creationMethod;
         private Vector3? startTangent;
@@ -160,7 +162,7 @@ public Spline(IEnumerable<Vector3> controlPoints, IEnumerable<double> weights, s
             : base(EntityType.Spline, DxfObjectCode.Spline)
         {
             // spline degree
-            if (degree < 1 || degree > 10)
+            if (degree < 1 || degree > MaxDegree)
             {
                 throw new ArgumentOutOfRangeException(nameof(degree), degree, "The spline degree valid values range from 1 to 10.");
             }
@@ -235,7 +237,7 @@ internal Spline(IEnumerable<Vector3> controlPoints, IEnumerable<double> weights,
             : base(EntityType.Spline, DxfObjectCode.Spline)
         {
             // spline degree
-            if (degree < 1 || degree > 10)
+            if (degree < 1 || degree > MaxDegree)
             {
                 throw new ArgumentOutOfRangeException(nameof(degree), degree, "The spline degree valid values range from 1 to 10.");
             }

netDxf/IO/DxfReader.cs

@@ -7799,6 +7799,10 @@ private Spline ReadSpline()
                         break;
                     case 71:
                         degree = this.chunk.ReadShort();
+                        if (degree > Spline.MaxDegree)
+                        {
+                            degree = Spline.MaxDegree;
+                        }
                         this.chunk.Next();
                         break;
                     case 72:
@@ -9393,6 +9397,11 @@ private MText ReadMText()
                 textString = textString.Replace("^J", "\\P");
             }
 
+            if (spacingStyle == MTextLineSpacingStyle.Default || spacingStyle == MTextLineSpacingStyle.Multiple)
+            {
+                spacingStyle = MTextLineSpacingStyle.AtLeast;
+            }
+
             Vector3 ocsDirection = MathHelper.Transform(direction, normal, CoordinateSystem.World, CoordinateSystem.Object);
 
             MText entity = new MText

netDxf/Tables/TableObject.cs

@@ -74,6 +74,7 @@ protected virtual void OnNameChangedEvent(string oldName, string newName)
         protected TableObject(string name, string codeName, bool checkName)
             : base(codeName)
         {
+            name = name.Trim();
             if (checkName)
             {
                 if (!IsValidName(name))