Create internal package

1 files changed, 23 insertions, 0 deletions

diff --git a/src/main/java/org/zwobble/mammoth/internal/docx/Numbering.java b/src/main/java/org/zwobble/mammoth/internal/docx/Numbering.java
new file mode 100644
index 0000000..f61b5db
--- /dev/null
+++ b/src/main/java/org/zwobble/mammoth/internal/docx/Numbering.java
@@ -0,0 +1,23 @@
+package org.zwobble.mammoth.internal.docx;
+
+import org.zwobble.mammoth.internal.documents.NumberingLevel;
+
+import java.util.Map;
+import java.util.Optional;
+
+import static org.zwobble.mammoth.internal.util.MammothMaps.map;
+
+public class Numbering {
+    public static final Numbering EMPTY = new Numbering(map());
+
+    private final Map<String, Map<String, NumberingLevel>> numbering;
+
+    public Numbering(Map<String, Map<String, NumberingLevel>> numbering) {
+        this.numbering = numbering;
+    }
+
+    public Optional<NumberingLevel> findLevel(String numId, String level) {
+        return Optional.ofNullable(numbering.get(numId))
+            .flatMap(levels -> Optional.ofNullable(levels.get(level)));
+    }
+}