Splitting fpdfdoc/doc_* part I

core/fpdfdoc/cpdf_actionfields.cpp

Index: core/fpdfdoc/cpdf_actionfields.cpp
diff --git a/core/fpdfdoc/cpdf_actionfields.cpp b/core/fpdfdoc/cpdf_actionfields.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..1ad1eb4673dc5519383b1d1aa18627cff6b5ec71
--- /dev/null
+++ b/core/fpdfdoc/cpdf_actionfields.cpp
@@ -0,0 +1,96 @@
+// Copyright 2016 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/fpdfdoc/include/cpdf_actionfields.h"
+
+#include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
+#include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
+#include "core/fpdfdoc/include/cpdf_action.h"
+
+size_t CPDF_ActionFields::GetFieldsCount() const {
+  if (!m_pAction)
+    return 0;
+
+  CPDF_Dictionary* pDict = m_pAction->GetDict();
+  if (!pDict)
+    return 0;
+
+  CFX_ByteString csType = pDict->GetStringBy("S");
+  CPDF_Object* pFields = nullptr;
+  if (csType == "Hide")
+    pFields = pDict->GetDirectObjectBy("T");
+  else
+    pFields = pDict->GetArrayBy("Fields");
+
+  if (!pFields)
+    return 0;
+  if (pFields->IsDictionary())
+    return 1;
+  if (pFields->IsString())
+    return 1;
+  if (CPDF_Array* pArray = pFields->AsArray())
+    return pArray->GetCount();
+  return 0;
+}
+
+std::vector<CPDF_Object*> CPDF_ActionFields::GetAllFields() const {
+  std::vector<CPDF_Object*> fields;
+  if (!m_pAction)
+    return fields;
+
+  CPDF_Dictionary* pDict = m_pAction->GetDict();
+  if (!pDict)
+    return fields;
+
+  CFX_ByteString csType = pDict->GetStringBy("S");
+  CPDF_Object* pFields;
+  if (csType == "Hide")
+    pFields = pDict->GetDirectObjectBy("T");
+  else
+    pFields = pDict->GetArrayBy("Fields");
+
+  if (!pFields)
+    return fields;
+
+  if (pFields->IsDictionary() || pFields->IsString()) {
+    fields.push_back(pFields);
+  } else if (CPDF_Array* pArray = pFields->AsArray()) {
+    for (size_t i = 0; i < pArray->GetCount(); ++i) {
+      CPDF_Object* pObj = pArray->GetDirectObjectAt(i);
+      if (pObj)
+        fields.push_back(pObj);
+    }
+  }
+  return fields;
+}
+
+CPDF_Object* CPDF_ActionFields::GetField(size_t iIndex) const {
+  if (!m_pAction)
+    return nullptr;
+
+  CPDF_Dictionary* pDict = m_pAction->GetDict();
+  if (!pDict)
+    return nullptr;
+
+  CFX_ByteString csType = pDict->GetStringBy("S");
+  CPDF_Object* pFields = nullptr;
+  if (csType == "Hide")
+    pFields = pDict->GetDirectObjectBy("T");
+  else
+    pFields = pDict->GetArrayBy("Fields");
+
+  if (!pFields)
+    return nullptr;
+
+  CPDF_Object* pFindObj = nullptr;
+  if (pFields->IsDictionary() || pFields->IsString()) {
+    if (iIndex == 0)
+      pFindObj = pFields;
+  } else if (CPDF_Array* pArray = pFields->AsArray()) {
+    pFindObj = pArray->GetDirectObjectAt(iIndex);
+  }
+  return pFindObj;
+}