From 0b53b648ab79a35b9ec0da56c0b936955a51d135 Mon Sep 17 00:00:00 2001
From: m-holger <m-holger@kubitscheck.org>
Date: Sun, 25 Dec 2022 11:03:54 +0000
Subject: Refactor QPDF_Array::unparse

---
 libqpdf/QPDF_Array.cc | 35 ++++++++++++++++++++++-------------
 1 file changed, 22 insertions(+), 13 deletions(-)

diff --git a/libqpdf/QPDF_Array.cc b/libqpdf/QPDF_Array.cc
index 2cb4bce5..3bd139b1 100644
--- a/libqpdf/QPDF_Array.cc
+++ b/libqpdf/QPDF_Array.cc
@@ -128,24 +128,33 @@ QPDF_Array::disconnect()
 std::string
 QPDF_Array::unparse()
 {
+    std::string result = "[ ";
     if (sparse) {
-        std::string result = "[ ";
-        for (int i = 0; i < sp_size; ++i) {
-            result += at(i).unparse();
-            result += " ";
+        int next = 0;
+        for (auto& item: sp_elements) {
+            int key = item.first;
+            for (int j = next; j < key; ++j) {
+                result += "null ";
+            }
+            item.second->resolve();
+            auto og = item.second->getObjGen();
+            result += og.isIndirect() ? og.unparse(' ') + " R "
+                                      : item.second->unparse() + " ";
+            next = ++key;
+        }
+        for (int j = next; j < sp_size; ++j) {
+            result += "null ";
         }
-        result += "]";
-        return result;
     } else {
-        std::string result = "[ ";
-        auto size = elements.size();
-        for (int i = 0; i < int(size); ++i) {
-            result += at(i).unparse();
-            result += " ";
+        for (auto const& item: elements) {
+            item->resolve();
+            auto og = item->getObjGen();
+            result += og.isIndirect() ? og.unparse(' ') + " R "
+                                      : item->unparse() + " ";
         }
-        result += "]";
-        return result;
     }
+    result += "]";
+    return result;
 }
 
 JSON
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