Fix puncture prose boundary splitting

src/RolemasterDb.ImportTool/Parsing/CriticalTableParserSupport.cs

@@ -15,6 +15,7 @@ internal static class CriticalTableParserSupport
     internal const int TopGroupingTolerance = 2;
 
     private static readonly Regex MultiFragmentSplitRegex = new(@"\S(?:.*?\S)?(?=(?:\s{2,}|$))", RegexOptions.Compiled);
+    private static readonly Regex SentenceFragmentSplitRegex = new(@"\S.*?(?:[.!?](?:['"")\]]*)|$)", RegexOptions.Compiled);
     private static readonly Regex NumericAffixLineRegex = new(@"^\d+(?:H|∑|∏|π|∫|\s*[–-])", RegexOptions.Compiled);
     private static readonly Regex StandaloneModifierAffixLineRegex = new(@"^(?:\d+)?\((?:\+|-|–)\d+\)$", RegexOptions.Compiled);
 
@@ -373,7 +374,7 @@ internal static class CriticalTableParserSupport
             supportsPowerPointModifier: footerText.Contains("powerpoint modification", StringComparison.OrdinalIgnoreCase));
     }
 
-    internal static List<XmlTextFragment> SplitBoundaryCrossingAffixFragments(
+    internal static List<XmlTextFragment> SplitBoundaryCrossingFragments(
         IReadOnlyList<XmlTextFragment> bodyFragments,
         IReadOnlyList<(string Key, double CenterX)> columnCenters,
         IReadOnlySet<string> affixLegendSymbols)
@@ -382,7 +383,7 @@ internal static class CriticalTableParserSupport
 
         foreach (var fragment in bodyFragments)
         {
-            splitFragments.AddRange(SplitBoundaryCrossingAffixFragment(fragment, columnCenters, affixLegendSymbols));
+            splitFragments.AddRange(SplitBoundaryCrossingFragment(fragment, columnCenters, affixLegendSymbols));
         }
 
         return splitFragments;
@@ -467,7 +468,7 @@ internal static class CriticalTableParserSupport
                 !excludedFragments.Contains(item))
             .ToList();
 
-        return SplitBoundaryCrossingAffixFragments(bodyFragments, columnCenters, affixLegendSymbols);
+        return SplitBoundaryCrossingFragments(bodyFragments, columnCenters, affixLegendSymbols);
     }
 
     internal static void RepairLeadingAffixLeakage(List<ColumnarCellEntry> cellEntries, IReadOnlySet<string> affixLegendSymbols)
@@ -612,17 +613,17 @@ internal static class CriticalTableParserSupport
         return true;
     }
 
-    private static IReadOnlyList<XmlTextFragment> SplitBoundaryCrossingAffixFragment(
+    private static IReadOnlyList<XmlTextFragment> SplitBoundaryCrossingFragment(
         XmlTextFragment fragment,
         IReadOnlyList<(string Key, double CenterX)> columnCenters,
         IReadOnlySet<string> affixLegendSymbols)
     {
-        if (!LooksLikeBoundaryCrossingAffixFragment(fragment, columnCenters, affixLegendSymbols))
+        if (!TryGetBoundaryCrossingPattern(fragment, columnCenters, affixLegendSymbols, out var splitPattern))
         {
             return [fragment];
         }
 
-        var matches = MultiFragmentSplitRegex.Matches(fragment.Text);
+        var matches = splitPattern.Matches(fragment.Text);
         if (matches.Count < 2)
         {
             return [fragment];
@@ -667,17 +668,40 @@ internal static class CriticalTableParserSupport
             : [fragment];
     }
 
-    private static bool LooksLikeBoundaryCrossingAffixFragment(
+    private static bool TryGetBoundaryCrossingPattern(
         XmlTextFragment fragment,
         IReadOnlyList<(string Key, double CenterX)> columnCenters,
-        IReadOnlySet<string> affixLegendSymbols)
+        IReadOnlySet<string> affixLegendSymbols,
+        out Regex splitPattern)
     {
-        if (!IsAffixLikeLine(fragment.Text, affixLegendSymbols) ||
-            !fragment.Text.Contains("  ", StringComparison.Ordinal))
+        splitPattern = null!;
+
+        if (!CrossesColumnBoundary(fragment, columnCenters))
         {
             return false;
         }
 
+        if (IsAffixLikeLine(fragment.Text, affixLegendSymbols) &&
+            fragment.Text.Contains("  ", StringComparison.Ordinal))
+        {
+            splitPattern = MultiFragmentSplitRegex;
+            return true;
+        }
+
+        if (!IsAffixLikeLine(fragment.Text, affixLegendSymbols) &&
+            CountSentenceLikeSegments(fragment.Text) >= 2)
+        {
+            splitPattern = SentenceFragmentSplitRegex;
+            return true;
+        }
+
+        return false;
+    }
+
+    private static bool CrossesColumnBoundary(
+        XmlTextFragment fragment,
+        IReadOnlyList<(string Key, double CenterX)> columnCenters)
+    {
         var fragmentRight = fragment.Left + fragment.Width;
 
         for (var index = 0; index < columnCenters.Count - 1; index++)
@@ -692,6 +716,11 @@ internal static class CriticalTableParserSupport
         return false;
     }
 
+    private static int CountSentenceLikeSegments(string text) =>
+        SentenceFragmentSplitRegex.Matches(text)
+            .Select(match => CollapseWhitespace(match.Value))
+            .Count(value => !string.IsNullOrWhiteSpace(value));
+
     private static void AddLegendMatch(
         IDictionary<string, string> symbolEffects,
         string value,