1 files changed, 42 insertions, 0 deletions
diff --git a/core/fpdfapi/font/cpdf_cid2unicodemap.cpp b/core/fpdfapi/font/cpdf_cid2unicodemap.cpp
new file mode 100644
index 0000000000..cb378aa9d6
--- /dev/null
+++ b/core/fpdfapi/font/cpdf_cid2unicodemap.cpp
@@ -0,0 +1,42 @@
+// 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.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "core/fpdfapi/font/cpdf_cid2unicodemap.h"
+
+#include "core/fpdfapi/cpdf_modulemgr.h"
+#include "core/fpdfapi/font/cpdf_cmapmanager.h"
+#include "core/fpdfapi/page/cpdf_pagemodule.h"
+
+CPDF_CID2UnicodeMap::CPDF_CID2UnicodeMap() {
+  m_EmbeddedCount = 0;
+}
+
+CPDF_CID2UnicodeMap::~CPDF_CID2UnicodeMap() {}
+
+bool CPDF_CID2UnicodeMap::IsLoaded() {
+  return m_EmbeddedCount != 0;
+}
+
+wchar_t CPDF_CID2UnicodeMap::UnicodeFromCID(uint16_t CID) {
+  if (m_Charset == CIDSET_UNICODE) {
+    return CID;
+  }
+  if (CID < m_EmbeddedCount) {
+    return m_pEmbeddedMap[CID];
+  }
+  return 0;
+}
+
+void CPDF_CID2UnicodeMap::Load(CPDF_CMapManager* pMgr,
+                               CIDSet charset,
+                               bool bPromptCJK) {
+  m_Charset = charset;
+
+  CPDF_FontGlobals* pFontGlobals =
+      CPDF_ModuleMgr::Get()->GetPageModule()->GetFontGlobals();
+  m_pEmbeddedMap = pFontGlobals->m_EmbeddedToUnicodes[charset].m_pMap;
+  m_EmbeddedCount = pFontGlobals->m_EmbeddedToUnicodes[charset].m_Count;
+}