Reuse filename template regex

Author: mohnjiles

StabilityMatrix.Avalonia/Models/Inference/FileNameFormatProvider.cs

@@ -144,7 +144,7 @@ public ValidationResult Validate(string format)
 
     public IEnumerable<string> GetVariableTexts(string template)
     {
-        return BracketRegex().Matches(template).Select(m => m.Groups[1].Value);
+        return VariableRegex().Matches(template).Select(m => m.Groups[1].Value);
     }
 
     public string GetVariableName(string variableText)
@@ -185,7 +185,7 @@ public bool TryResolveVariable(string variableText, out string? value, out strin
 
     public IEnumerable<FileNameFormatPart> GetParts(string template)
     {
-        var regex = BracketRegex();
+        var regex = VariableRegex();
         var matches = regex.Matches(template);
 
         var parts = new List<FileNameFormatPart>();
@@ -338,6 +338,8 @@ private static (string Variable, Slice? Slice) ExtractVariableAndSlice(string co
     [GeneratedRegex(@"\{([a-z_:\d\[\]]+)\}")]
     private static partial Regex BracketRegex();
 
+    internal static Regex VariableRegex() => BracketRegex();
+
     /// <summary>
     /// Regex for matching a Python-like array index.
     /// </summary>

StabilityMatrix.Avalonia/Services/ModelOrganizationService.cs

@@ -20,7 +20,6 @@ public class ModelOrganizationService
         Path.DirectorySeparatorChar,
         Path.AltDirectorySeparatorChar,
     ];
-    private static readonly Regex TemplateRegex = new(@"\{([a-z_:\d\[\]]+)\}", RegexOptions.Compiled);
     private static readonly HashSet<char> InvalidSubstitutionChars =
     [
         .. Path.GetInvalidFileNameChars(),
@@ -325,7 +324,7 @@ out string? error
         var builder = new StringBuilder();
         var currentIndex = 0;
 
-        foreach (var match in TemplateRegex.Matches(template).Cast<Match>())
+        foreach (var match in FileNameFormatProvider.VariableRegex().Matches(template).Cast<Match>())
         {
             if (match.Index > currentIndex)
             {