Add QPDFObjectHandle::shallowCopy()

1 files changed, 32 insertions, 0 deletions

diff --git a/libqpdf/QPDFObjectHandle.cc b/libqpdf/QPDFObjectHandle.cc
index 53d9414c..4e28c405 100644
--- a/libqpdf/QPDFObjectHandle.cc
+++ b/libqpdf/QPDFObjectHandle.cc
@@ -663,6 +663,38 @@ QPDFObjectHandle::newStream(QPDF* qpdf, PointerHolder<Buffer> data)
     return result;
 }
 
+QPDFObjectHandle
+QPDFObjectHandle::shallowCopy()
+{
+    assertInitialized();
+
+    if (isStream())
+    {
+	QTC::TC("qpdf", "QPDFObjectHandle ERR shallow copy stream");
+	throw std::runtime_error(
+	    "attempt to make a shallow copy of a stream");
+    }
+
+    QPDFObjectHandle new_obj;
+    if (isArray())
+    {
+	QTC::TC("qpdf", "QPDFObjectHandle shallow copy array");
+	new_obj = newArray(getArrayAsVector());
+    }
+    else if (isDictionary())
+    {
+	QTC::TC("qpdf", "QPDFObjectHandle shallow copy dictionary");
+        new_obj = newDictionary(getDictAsMap());
+    }
+    else
+    {
+	QTC::TC("qpdf", "QPDFObjectHandle shallow copy scalar");
+        new_obj = *this;
+    }
+
+    return new_obj;
+}
+
 void
 QPDFObjectHandle::makeDirectInternal(std::set<int>& visited)
 {