From 654c0e8caf5e75119534de5d93d1ee28bd13325a Mon Sep 17 00:00:00 2001
From: Jay Berkenbilt <ejb@ql.org>
Date: Sat, 12 Jan 2019 09:14:20 -0500
Subject: Allow adding the same page more than once in --pages (fixes #272)

---
 libqpdf/QPDF.cc                 |  6 ++++++
 libqpdf/QPDFPageObjectHelper.cc | 15 +++++++++++++++
 2 files changed, 21 insertions(+)

(limited to 'libqpdf')

diff --git a/libqpdf/QPDF.cc b/libqpdf/QPDF.cc
index 95ae9cab..0dbce669 100644
--- a/libqpdf/QPDF.cc
+++ b/libqpdf/QPDF.cc
@@ -2470,6 +2470,12 @@ QPDF::swapObjects(int objid1, int generation1, int objid2, int generation2)
     this->m->obj_cache[og2] = t;
 }
 
+unsigned long long
+QPDF::getUniqueId() const
+{
+    return this->m->unique_id;
+}
+
 std::string
 QPDF::getFilename() const
 {
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));
+}
-- 
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