1 files changed, 39 insertions, 0 deletions
diff --git a/core/fpdfapi/parser/cpdf_dictionary.cpp b/core/fpdfapi/parser/cpdf_dictionary.cpp
index d4e4080d31..7d84083829 100644
--- a/core/fpdfapi/parser/cpdf_dictionary.cpp
+++ b/core/fpdfapi/parser/cpdf_dictionary.cpp
@@ -16,6 +16,7 @@
 #include "core/fpdfapi/parser/cpdf_reference.h"
 #include "core/fpdfapi/parser/cpdf_stream.h"
 #include "core/fpdfapi/parser/cpdf_string.h"
+#include "core/fpdfapi/parser/fpdf_parser_decode.h"
 #include "third_party/base/logging.h"
 #include "third_party/base/stl_util.h"
 
@@ -237,3 +238,41 @@ void CPDF_Dictionary::SetMatrixFor(const CFX_ByteString& key,
 CFX_ByteString CPDF_Dictionary::MaybeIntern(const CFX_ByteString& str) {
   return m_pPool ? m_pPool->Intern(str) : str;
 }
+
+bool CPDF_Dictionary::WriteTo(CFX_FileBufferArchive* archive,
+                              FX_FILESIZE* offset) const {
+  if (archive->AppendString("<<") < 0)
+    return false;
+  *offset += 2;
+
+  for (const auto& it : *this) {
+    const CFX_ByteString& key = it.first;
+    CPDF_Object* pValue = it.second.get();
+    if (archive->AppendString("/") < 0)
+      return false;
+
+    int32_t len = archive->AppendString(PDF_NameEncode(key).AsStringC());
+    if (len < 0)
+      return false;
+    *offset += len + 1;
+
+    if (!pValue->IsInline()) {
+      if (archive->AppendString(" ") < 0)
+        return false;
+
+      len = archive->AppendDWord(pValue->GetObjNum());
+      if (len < 0)
+        return false;
+      if (archive->AppendString(" 0 R") < 0)
+        return false;
+      *offset += len + 5;
+    } else {
+      if (!pValue->WriteTo(archive, offset))
+        return false;
+    }
+  }
+  if (archive->AppendString(">>") < 0)
+    return false;
+  *offset += 2;
+  return true;
+}