Add FPDFCatalog_IsTagged to public API.

The new fpdf_catalog.h will contains functions to access entries in
the catalog (root) dict in a PDF.

Bug: chromium:768986
Change-Id: I6e1d4a479d6f8742981e89f07bab98ee96dc3763
Reviewed-on: https://pdfium-review.googlesource.com/15970
Reviewed-by: dsinclair <dsinclair@chromium.org>
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>

1 files changed, 22 insertions, 0 deletions

diff --git a/fpdfsdk/fpdfcatalog.cpp b/fpdfsdk/fpdfcatalog.cpp
new file mode 100644
index 0000000000..493e5aea43
--- /dev/null
+++ b/fpdfsdk/fpdfcatalog.cpp
@@ -0,0 +1,22 @@
+// Copyright 2017 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "public/fpdf_catalog.h"
+
+#include "core/fpdfapi/parser/cpdf_document.h"
+#include "fpdfsdk/fsdk_define.h"
+
+FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
+FPDFCatalog_IsTagged(FPDF_DOCUMENT document) {
+  CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
+  if (!pDoc)
+    return false;
+
+  const CPDF_Dictionary* pCatalog = pDoc->GetRoot();
+  if (!pCatalog)
+    return false;
+
+  const CPDF_Dictionary* pMarkInfo = pCatalog->GetDictFor("MarkInfo");
+  return pMarkInfo && pMarkInfo->GetIntegerFor("Marked") != 0;
+}