Add option to preserve unreferenced objects

2 files changed, 13 insertions, 0 deletions

diff --git a/include/qpdf/QPDF.hh b/include/qpdf/QPDF.hh
index ef9ce597..ad8503dc 100644
--- a/include/qpdf/QPDF.hh
+++ b/include/qpdf/QPDF.hh
@@ -396,6 +396,12 @@ class QPDF
     QPDF_DLL
     void showXRefTable();
 
+    // Returns a list of indirect objects for every object in the xref
+    // table. Useful for discovering objects that are not otherwised
+    // referenced.
+    QPDF_DLL
+    std::vector<QPDFObjectHandle> getAllObjects();
+
     // Optimization support -- see doc/optimization.  Implemented in
     // QPDF_optimization.cc
 
diff --git a/include/qpdf/QPDFWriter.hh b/include/qpdf/QPDFWriter.hh
index 2687cce0..fd35fecd 100644
--- a/include/qpdf/QPDFWriter.hh
+++ b/include/qpdf/QPDFWriter.hh
@@ -155,6 +155,12 @@ class QPDFWriter
     QPDF_DLL
     void setPrecheckStreams(bool);
 
+    // Preserve unreferenced objects. The default behavior is to
+    // discard any object that is not visited during a traversal of
+    // the object structure from the trailer.
+    QPDF_DLL
+    void setPreserveUnreferencedObjects(bool);
+
     // Set the minimum PDF version.  If the PDF version of the input
     // file (or previously set minimum version) is less than the
     // version passed to this method, the PDF version of the output
@@ -427,6 +433,7 @@ class QPDFWriter
     qpdf_stream_data_e stream_data_mode;
     bool qdf_mode;
     bool precheck_streams;
+    bool preserve_unreferenced_objects;
     bool static_id;
     bool suppress_original_object_ids;
     bool direct_stream_lengths;