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// 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->GetObjNum() != kInvalidObjNum)
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::ConvertToIndirectObjectAt(size_t i,
CPDF_IndirectObjectHolder* pHolder) {
if (i >= m_Objects.size())
return;
CPDF_Object* pObj = m_Objects[i];
if (!pObj || pObj->IsReference())
return;
uint32_t dwObjNum = pHolder->AddIndirectObject(pObj);
m_Objects[i] = new CPDF_Reference(pHolder, dwObjNum);
}
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));
}
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