Add private methods for reserving specific objects

2 files changed, 8 insertions, 0 deletions

diff --git a/include/qpdf/QPDF.hh b/include/qpdf/QPDF.hh
index 2e24b261..b547fcbd 100644
--- a/include/qpdf/QPDF.hh
+++ b/include/qpdf/QPDF.hh
@@ -1079,6 +1079,7 @@ class QPDF
     std::shared_ptr<QPDFObject> resolve(int objid, int generation);
     void resolveObjectsInStream(int obj_stream_number);
     void stopOnError(std::string const& message);
+    QPDFObjectHandle reserveObjectIfNotExists(int objid, int gen);
 
     // Calls finish() on the pipeline when done but does not delete it
     bool pipeStreamData(
diff --git a/include/qpdf/QPDFObjectHandle.hh b/include/qpdf/QPDFObjectHandle.hh
index 70c7cf54..ec4a9699 100644
--- a/include/qpdf/QPDFObjectHandle.hh
+++ b/include/qpdf/QPDFObjectHandle.hh
@@ -1444,6 +1444,12 @@ class QPDFObjectHandle
             return QPDFObjectHandle::newStream(
                 qpdf, objid, generation, stream_dict, offset, length);
         }
+        // Reserve an object with a specific ID
+        static QPDFObjectHandle
+        makeReserved()
+        {
+            return QPDFObjectHandle::makeReserved();
+        }
     };
     friend class Factory;
 
@@ -1561,6 +1567,7 @@ class QPDFObjectHandle
         QPDFObjectHandle stream_dict,
         qpdf_offset_t offset,
         size_t length);
+    static QPDFObjectHandle makeReserved();
 
     void typeWarning(char const* expected_type, std::string const& warning);
     void objectWarning(std::string const& warning);