LibUnicode: Add enum for UAX#14 line breaking classes

Libraries/LibUnicode/CharacterTypes.cpp

@@ -463,4 +463,30 @@ BidiClass bidirectional_class(u32 code_point)
     return char_direction_to_bidi_class(direction);
 }
 
+LineBreakClass line_break_class(u32 code_point)
+{
+    auto icu_code_point = static_cast<UChar32>(code_point);
+    auto icu_line_break = static_cast<ULineBreak>(u_getIntPropertyValue(icu_code_point, UCHAR_LINE_BREAK));
+
+    switch (icu_line_break) {
+    case U_LB_ALPHABETIC:
+    case U_LB_HEBREW_LETTER:
+        return LineBreakClass::Alphabetic;
+    case U_LB_NUMERIC:
+        return LineBreakClass::Numeric;
+    case U_LB_IDEOGRAPHIC:
+    case U_LB_H2:
+    case U_LB_H3:
+        return LineBreakClass::Ideographic;
+    case U_LB_AMBIGUOUS:
+        return LineBreakClass::Ambiguous;
+    case U_LB_COMPLEX_CONTEXT:
+        return LineBreakClass::ComplexContext;
+    case U_LB_COMBINING_MARK:
+        return LineBreakClass::CombiningMark;
+    default:
+        return LineBreakClass::Other;
+    }
+}
+
 }

Libraries/LibUnicode/CharacterTypes.h

@@ -74,4 +74,16 @@ enum class BidiClass {
 
 BidiClass bidirectional_class(u32 code_point);
 
+enum class LineBreakClass {
+    Alphabetic,     // AL
+    Numeric,        // NU
+    Ideographic,    // ID
+    Ambiguous,      // AI
+    ComplexContext, // SA
+    CombiningMark,  // CM
+    Other,
+};
+
+LineBreakClass line_break_class(u32 code_point);
+
 }