Add extractFontFamily method

src/main/java/org/verapdf/pd/font/PDFontDescriptor.java

@@ -24,9 +24,9 @@
 import org.verapdf.cos.*;
 import org.verapdf.pd.PDObject;
 import org.verapdf.pd.font.stdmetrics.StandardFontMetrics;
+import org.verapdf.tools.FontConstants;
 
-import java.util.Iterator;
-import java.util.Map;
+import java.util.*;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
@@ -122,6 +122,35 @@ public String getFontFamily() {
         return fontFamily;
     }
 
+    public static String extractFontFamilyFromFontName(String fontNameWithoutSubset) {
+        if (fontNameWithoutSubset == null || fontNameWithoutSubset.isEmpty()) return null;
+
+        String name = fontNameWithoutSubset.trim();
+        name = name.replaceAll("\\*\\d+", "");
+
+        boolean changed = true;
+        while (changed) {
+            changed = false;
+            for (String suffix : FontConstants.STYLE_SUFFIXES) {
+                String lowerName = name.toLowerCase();
+                String lowerSuffix = suffix.toLowerCase();
+                if (lowerName.endsWith(lowerSuffix)) {
+                    name = name.substring(0, name.length() - suffix.length());
+                    if (name.endsWith("-")) {
+                        name = name.substring(0, name.length() - 1);
+                    }
+                    changed = true;
+                    break;
+                }
+            }
+        }
+
+        String spaced = name.replaceAll("([a-z])([A-Z])", "$1 $2");
+        spaced = spaced.trim().replaceAll("\\s+", " ");
+
+        return spaced.isEmpty() ? null : spaced;
+    }
+
     /**
      * @return the font stretch value.
      */

src/main/java/org/verapdf/tools/FontConstants.java

@@ -0,0 +1,78 @@
+package org.verapdf.tools;
+
+import java.util.Arrays;
+import java.util.List;
+
+public class FontConstants {
+    public static final List<String> STYLE_SUFFIXES = Arrays.asList(
+            // ---- Weight ----
+            "Hairline", "Thin",
+            "ExtraLight", "ExtLt", "Extra Light", "Extra-Light",
+            "UltraLight", "UltLt", "Ultra Light", "Ultra-Light",
+            "Light", "Lt",
+            "Book",
+            "Normal",
+            "Regular", "Rg", "Roman",
+            "Medium", "Md",
+            "Demi", "DemiBold", "Demi Bold", "Demi-Bold",
+            "SemiBold", "Semibold", "SemiBd", "Semi Bold", "Semi-Bold",
+            "Bold", "Bd",
+            "ExtraBold", "ExtBd", "Extra Bold", "Extra-Bold",
+            "UltraBold", "UltBd", "Ultra Bold", "Ultra-Bold",
+            "Black", "Blk",
+            "Heavy", "Hv",
+            "Ultra", "Fat", "Poster",
+
+            // ---- Slope ----
+            "Italic", "Ita", "It",
+            "Oblique", "Obl", "Caps", "CapsI",
+            "Backslant",
+
+            // ---- Width ----
+            "Compressed",
+            "ExtraCondensed", "UltraCondensed",
+            "Condensed", "Cond", "Cn",
+            "SemiCondensed",
+            "Narrow",
+            "SemiExpanded",
+            "Expanded", "Exp", "Extended",
+            "ExtraExpanded", "UltraExpanded",
+            "Wide",
+
+            // ---- Optical size ----
+            "Caption", "Text", "Subhead", "Deck", "Display", "Titling",
+
+            // ---- Weight + Italic/Oblique (common combinations) ----
+            "ThinItalic", "ThinIt",
+            "LightItalic", "LightOblique", "LightIt",
+            "BookItalic", "BookOblique",
+            "MediumItalic", "MediumOblique", "MediumIt",
+            "DemiItalic", "DemiOblique",
+            "SemiBoldItalic", "SemiboldItalic", "SemiBoldIt", "SemiboldIt",
+            "BoldItalic", "BoldIt", "BoldOblique", "BoldObl",
+            "ExtraBoldItalic", "ExtraBoldIt",
+            "BlackItalic", "BlackIt", "HeavyItalic",
+
+            // ---- Width + Weight / Slope (common combos) ----
+            "BoldCondensed", "BoldCond", "BoldCn",
+            "BoldExpanded", "BoldExp", "BoldExtended",
+            "BoldSemiExt", "SemiExt",
+            "LightCondensed", "LightCond",
+            "MediumCondensed", "MediumCond",
+            "CondensedBold", "CondBold",
+            "CondensedLight",
+            "ExpandedBold", "ExtendedBold",
+
+            // ---- SmallCaps & other variants ----
+            "SmallCaps", "SC", "PetiteCaps",
+            "RomanSmallCaps",
+            "BoldSmallCaps",
+            "Inline", "Outline", "Shadow",
+            "Engraved", "Stencil", "Swash",
+            "SuppSwashCaps", "SwashCaps",
+            "Ornaments", "Symbols", "Icons", "Supp", "Small",
+
+            // ---- Foundry / vendor tags ----
+            "Std", "MT", "PS", "LT", "Com", "W1G", "EF", "CE"
+    );
+}