Add option to preserve unreferenced objects

1 files changed, 18 insertions, 0 deletions

diff --git a/libqpdf/QPDFWriter.cc b/libqpdf/QPDFWriter.cc
index 59e306fc..01309f43 100644
--- a/libqpdf/QPDFWriter.cc
+++ b/libqpdf/QPDFWriter.cc
@@ -58,6 +58,7 @@ QPDFWriter::init()
     stream_data_mode = qpdf_s_compress;
     qdf_mode = false;
     precheck_streams = false;
+    preserve_unreferenced_objects = false;
     static_id = false;
     suppress_original_object_ids = false;
     direct_stream_lengths = true;
@@ -184,6 +185,12 @@ QPDFWriter::setPrecheckStreams(bool val)
 }
 
 void
+QPDFWriter::setPreserveUnreferencedObjects(bool val)
+{
+    this->preserve_unreferenced_objects = val;
+}
+
+void
 QPDFWriter::setMinimumPDFVersion(std::string const& version)
 {
     setMinimumPDFVersion(version, 0);
@@ -3074,6 +3081,17 @@ QPDFWriter::writeStandard()
     writeHeader();
     writeString(this->extra_header_text);
 
+    if (this->preserve_unreferenced_objects)
+    {
+        QTC::TC("qpdf", "QPDFWriter preserve unreferenced standard");
+        std::vector<QPDFObjectHandle> all = this->pdf.getAllObjects();
+        for (std::vector<QPDFObjectHandle>::iterator iter = all.begin();
+             iter != all.end(); ++iter)
+        {
+            enqueueObject(*iter);
+        }
+    }
+
     // Put root first on queue.
     QPDFObjectHandle trailer = getTrimmedTrailer();
     enqueueObject(trailer.getKey("/Root"));