Allow adding the same page more than once in --pages (fixes #272)

1 files changed, 15 insertions, 0 deletions

diff --git a/libqpdf/QPDFPageObjectHelper.cc b/libqpdf/QPDFPageObjectHelper.cc
index 4093622d..611f33ea 100644
--- a/libqpdf/QPDFPageObjectHelper.cc
+++ b/libqpdf/QPDFPageObjectHelper.cc
@@ -1,5 +1,6 @@
 #include <qpdf/QPDFPageObjectHelper.hh>
 #include <qpdf/QTC.hh>
+#include <qpdf/QPDF.hh>
 
 QPDFPageObjectHelper::Members::~Members()
 {
@@ -167,3 +168,17 @@ QPDFPageObjectHelper::removeUnreferencedResources()
         }
     }
 }
+
+QPDFPageObjectHelper
+QPDFPageObjectHelper::shallowCopyPage()
+{
+    QPDF* qpdf = this->oh.getOwningQPDF();
+    if (! qpdf)
+    {
+        throw std::runtime_error(
+            "QPDFPageObjectHelper::shallowCopyPage"
+            " called with a direct objet");
+    }
+    QPDFObjectHandle new_page = this->oh.shallowCopy();
+    return QPDFPageObjectHelper(qpdf->makeIndirectObject(new_page));
+}