1 files changed, 200 insertions, 0 deletions
diff --git a/core/fpdfapi/parser/cpdf_array.cpp b/core/fpdfapi/parser/cpdf_array.cpp
new file mode 100644
index 0000000000..61e69e8a53
--- /dev/null
+++ b/core/fpdfapi/parser/cpdf_array.cpp
@@ -0,0 +1,200 @@
+// 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/fpdfapi/parser/cpdf_array.h"
+
+#include <set>
+
+#include "core/fpdfapi/parser/cpdf_name.h"
+#include "core/fpdfapi/parser/cpdf_number.h"
+#include "core/fpdfapi/parser/cpdf_reference.h"
+#include "core/fpdfapi/parser/cpdf_stream.h"
+#include "core/fpdfapi/parser/cpdf_string.h"
+#include "third_party/base/logging.h"
+#include "third_party/base/stl_util.h"
+
+CPDF_Array::CPDF_Array() {}
+
+CPDF_Array::~CPDF_Array() {
+  // Mark the object as deleted so that it will not be deleted again
+  // in case of cyclic references.
+  m_ObjNum = kInvalidObjNum;
+  for (auto& it : m_Objects) {
+    if (it)
+      it->Release();
+  }
+}
+
+CPDF_Object::Type CPDF_Array::GetType() const {
+  return ARRAY;
+}
+
+bool CPDF_Array::IsArray() const {
+  return true;
+}
+
+CPDF_Array* CPDF_Array::AsArray() {
+  return this;
+}
+
+const CPDF_Array* CPDF_Array::AsArray() const {
+  return this;
+}
+
+CPDF_Object* CPDF_Array::Clone() const {
+  return CloneObjectNonCyclic(false);
+}
+
+CPDF_Object* CPDF_Array::CloneNonCyclic(
+    bool bDirect,
+    std::set<const CPDF_Object*>* pVisited) const {
+  pVisited->insert(this);
+  CPDF_Array* pCopy = new CPDF_Array();
+  for (size_t i = 0; i < GetCount(); i++) {
+    CPDF_Object* value = m_Objects[i];
+    if (!pdfium::ContainsKey(*pVisited, value))
+      pCopy->m_Objects.push_back(value->CloneNonCyclic(bDirect, pVisited));
+  }
+  return pCopy;
+}
+
+CFX_FloatRect CPDF_Array::GetRect() {
+  CFX_FloatRect rect;
+  if (!IsArray() || m_Objects.size() != 4)
+    return rect;
+
+  rect.left = GetNumberAt(0);
+  rect.bottom = GetNumberAt(1);
+  rect.right = GetNumberAt(2);
+  rect.top = GetNumberAt(3);
+  return rect;
+}
+
+CFX_Matrix CPDF_Array::GetMatrix() {
+  CFX_Matrix matrix;
+  if (!IsArray() || m_Objects.size() != 6)
+    return matrix;
+
+  matrix.Set(GetNumberAt(0), GetNumberAt(1), GetNumberAt(2), GetNumberAt(3),
+             GetNumberAt(4), GetNumberAt(5));
+  return matrix;
+}
+
+CPDF_Object* CPDF_Array::GetObjectAt(size_t i) const {
+  if (i >= m_Objects.size())
+    return nullptr;
+  return m_Objects[i];
+}
+
+CPDF_Object* CPDF_Array::GetDirectObjectAt(size_t i) const {
+  if (i >= m_Objects.size())
+    return nullptr;
+  return m_Objects[i]->GetDirect();
+}
+
+CFX_ByteString CPDF_Array::GetStringAt(size_t i) const {
+  if (i >= m_Objects.size())
+    return CFX_ByteString();
+  return m_Objects[i]->GetString();
+}
+
+int CPDF_Array::GetIntegerAt(size_t i) const {
+  if (i >= m_Objects.size())
+    return 0;
+  return m_Objects[i]->GetInteger();
+}
+
+FX_FLOAT CPDF_Array::GetNumberAt(size_t i) const {
+  if (i >= m_Objects.size())
+    return 0;
+  return m_Objects[i]->GetNumber();
+}
+
+CPDF_Dictionary* CPDF_Array::GetDictAt(size_t i) const {
+  CPDF_Object* p = GetDirectObjectAt(i);
+  if (!p)
+    return nullptr;
+  if (CPDF_Dictionary* pDict = p->AsDictionary())
+    return pDict;
+  if (CPDF_Stream* pStream = p->AsStream())
+    return pStream->GetDict();
+  return nullptr;
+}
+
+CPDF_Stream* CPDF_Array::GetStreamAt(size_t i) const {
+  return ToStream(GetDirectObjectAt(i));
+}
+
+CPDF_Array* CPDF_Array::GetArrayAt(size_t i) const {
+  return ToArray(GetDirectObjectAt(i));
+}
+
+void CPDF_Array::RemoveAt(size_t i, size_t nCount) {
+  if (i >= m_Objects.size())
+    return;
+
+  if (nCount <= 0 || nCount > m_Objects.size() - i)
+    return;
+
+  for (size_t j = 0; j < nCount; ++j) {
+    if (CPDF_Object* p = m_Objects[i + j])
+      p->Release();
+  }
+  m_Objects.erase(m_Objects.begin() + i, m_Objects.begin() + i + nCount);
+}
+
+void CPDF_Array::SetAt(size_t i, CPDF_Object* pObj) {
+  ASSERT(IsArray());
+  CHECK(!pObj || pObj->GetObjNum() == 0);
+  if (i >= m_Objects.size()) {
+    ASSERT(false);
+    return;
+  }
+  if (CPDF_Object* pOld = m_Objects[i])
+    pOld->Release();
+
+  m_Objects[i] = pObj;
+}
+
+void CPDF_Array::InsertAt(size_t index, CPDF_Object* pObj) {
+  ASSERT(IsArray());
+  CHECK(!pObj || pObj->GetObjNum() == 0);
+  if (index >= m_Objects.size()) {
+    // Allocate space first.
+    m_Objects.resize(index + 1, nullptr);
+    m_Objects[index] = pObj;
+  } else {
+    // Directly insert.
+    m_Objects.insert(m_Objects.begin() + index, pObj);
+  }
+}
+
+void CPDF_Array::Add(CPDF_Object* pObj) {
+  ASSERT(IsArray());
+  CHECK(!pObj || pObj->GetObjNum() == 0);
+  m_Objects.push_back(pObj);
+}
+
+void CPDF_Array::AddName(const CFX_ByteString& str) {
+  Add(new CPDF_Name(str));
+}
+
+void CPDF_Array::AddString(const CFX_ByteString& str) {
+  Add(new CPDF_String(str, FALSE));
+}
+
+void CPDF_Array::AddInteger(int i) {
+  Add(new CPDF_Number(i));
+}
+
+void CPDF_Array::AddNumber(FX_FLOAT f) {
+  Add(new CPDF_Number(f));
+}
+
+void CPDF_Array::AddReference(CPDF_IndirectObjectHolder* pDoc,
+                              uint32_t objnum) {
+  Add(new CPDF_Reference(pDoc, objnum));
+}