1 files changed, 55 insertions, 0 deletions
diff --git a/libqpdf/QPDFValue.cc b/libqpdf/QPDFValue.cc
index ca3205b7..30d534dc 100644
--- a/libqpdf/QPDFValue.cc
+++ b/libqpdf/QPDFValue.cc
@@ -9,3 +9,58 @@ QPDFValue::do_create(QPDFValue* object)
     obj->value = std::shared_ptr<QPDFValue>(object);
     return obj;
 }
+
+std::string
+QPDFValue::getDescription()
+{
+    if (object_description) {
+        switch (object_description->index()) {
+        case 0:
+            {
+                // Simple template string
+                auto description = std::get<0>(*object_description);
+
+                if (auto pos = description.find("$OG");
+                    pos != std::string::npos) {
+                    description.replace(pos, 3, og.unparse(' '));
+                }
+                if (auto pos = description.find("$PO");
+                    pos != std::string::npos) {
+                    qpdf_offset_t shift = (type_code == ::ot_dictionary) ? 2
+                        : (type_code == ::ot_array)                      ? 1
+                                                                         : 0;
+
+                    description.replace(
+                        pos, 3, std::to_string(parsed_offset + shift));
+                }
+                return description;
+            }
+        case 1:
+            {
+                // QPDF::JSONReactor generated description
+                auto j_descr = std::get<1>(*object_description);
+                return (
+                    *j_descr.input +
+                    (j_descr.object.empty() ? "" : ", " + j_descr.object) +
+                    " at offset " + std::to_string(parsed_offset));
+            }
+        case 2:
+            {
+                // Child object description
+                auto j_descr = std::get<2>(*object_description);
+                std::string result;
+                if (auto p = j_descr.parent.lock()) {
+                    result = p->getDescription();
+                }
+                result += j_descr.static_descr;
+                if (auto pos = result.find("$VD"); pos != std::string::npos) {
+                    result.replace(pos, 3, j_descr.var_descr);
+                }
+                return result;
+            }
+        }
+    } else if (og.isIndirect()) {
+        return "object " + og.unparse(' ');
+    }
+    return {};
+}