Add anchor on hyperlinks as fragment if present

2 files changed, 12 insertions, 2 deletions

diff --git a/src/main/java/org/zwobble/mammoth/internal/docx/StatefulBodyXmlReader.java b/src/main/java/org/zwobble/mammoth/internal/docx/StatefulBodyXmlReader.java
index 2097822..f726a29 100644
--- a/src/main/java/org/zwobble/mammoth/internal/docx/StatefulBodyXmlReader.java
+++ b/src/main/java/org/zwobble/mammoth/internal/docx/StatefulBodyXmlReader.java
@@ -436,8 +436,10 @@ class StatefulBodyXmlReader {
         Optional<String> anchor = element.getAttributeOrNone("w:anchor");
         ReadResult childrenResult = readElements(element.getChildren());
         if (relationshipId.isPresent()) {
-            return childrenResult.map(children -> Hyperlink.href(
-                relationships.findRelationshipById(relationshipId.get()).getTarget(), children));
+            String targetHref = relationships.findRelationshipById(relationshipId.get()).getTarget();
+            String href = anchor.map(fragment -> Uris.replaceFragment(targetHref, anchor.get()))
+                .orElse(targetHref);
+            return childrenResult.map(children -> Hyperlink.href(href, children));
         } else if (anchor.isPresent()) {
             return childrenResult.map(children -> Hyperlink.anchor(
                 anchor.get(), children));
diff --git a/src/main/java/org/zwobble/mammoth/internal/docx/Uris.java b/src/main/java/org/zwobble/mammoth/internal/docx/Uris.java
index 51dab9c..35b1751 100644
--- a/src/main/java/org/zwobble/mammoth/internal/docx/Uris.java
+++ b/src/main/java/org/zwobble/mammoth/internal/docx/Uris.java
@@ -11,4 +11,12 @@ public class Uris {
             return base + "/" + uri;
         }
     }
+
+    public static String replaceFragment(String uri, String fragment) {
+        int hashIndex = uri.indexOf("#");
+        if (hashIndex != -1) {
+            uri = uri.substring(0, hashIndex);
+        }
+        return uri + "#" + fragment;
+    }
 }