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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.
#include "core/fpdfapi/parser/cpdf_document.h"
#include <memory>
#include "core/fpdfapi/cpdf_modulemgr.h"
#include "core/fpdfapi/parser/cpdf_array.h"
#include "core/fpdfapi/parser/cpdf_dictionary.h"
#include "core/fpdfapi/parser/cpdf_parser.h"
#include "core/fxcrt/fx_memory.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace {
using ScopedDictionary =
std::unique_ptr<CPDF_Dictionary, ReleaseDeleter<CPDF_Dictionary>>;
CPDF_Dictionary* CreatePageTreeNode(CPDF_Array* kids,
CPDF_Document* pDoc,
int count) {
CPDF_Dictionary* pageNode = new CPDF_Dictionary();
pageNode->SetStringFor("Type", "Pages");
pageNode->SetReferenceFor("Kids", pDoc, pDoc->AddIndirectObject(kids));
pageNode->SetIntegerFor("Count", count);
uint32_t pageNodeRef = pDoc->AddIndirectObject(pageNode);
for (size_t i = 0; i < kids->GetCount(); i++)
kids->GetDictAt(i)->SetReferenceFor("Parent", pDoc, pageNodeRef);
return pageNode;
}
CPDF_Dictionary* CreateNumberedPage(size_t number) {
CPDF_Dictionary* page = new CPDF_Dictionary();
page->SetStringFor("Type", "Page");
page->SetIntegerFor("PageNumbering", number);
return page;
}
class CPDF_TestDocumentForPages : public CPDF_Document {
public:
CPDF_TestDocumentForPages() : CPDF_Document(nullptr) {
// Set up test
CPDF_Array* zeroToTwo = new CPDF_Array();
zeroToTwo->AddReference(this, AddIndirectObject(CreateNumberedPage(0)));
zeroToTwo->AddReference(this, AddIndirectObject(CreateNumberedPage(1)));
zeroToTwo->AddReference(this, AddIndirectObject(CreateNumberedPage(2)));
CPDF_Dictionary* branch1 = CreatePageTreeNode(zeroToTwo, this, 3);
CPDF_Array* zeroToThree = new CPDF_Array();
zeroToThree->AddReference(this, branch1->GetObjNum());
zeroToThree->AddReference(this, AddIndirectObject(CreateNumberedPage(3)));
CPDF_Dictionary* branch2 = CreatePageTreeNode(zeroToThree, this, 4);
CPDF_Array* fourFive = new CPDF_Array();
fourFive->AddReference(this, AddIndirectObject(CreateNumberedPage(4)));
fourFive->AddReference(this, AddIndirectObject(CreateNumberedPage(5)));
CPDF_Dictionary* branch3 = CreatePageTreeNode(fourFive, this, 2);
CPDF_Array* justSix = new CPDF_Array();
justSix->AddReference(this, AddIndirectObject(CreateNumberedPage(6)));
CPDF_Dictionary* branch4 = CreatePageTreeNode(justSix, this, 1);
CPDF_Array* allPages = new CPDF_Array();
allPages->AddReference(this, branch2->GetObjNum());
allPages->AddReference(this, branch3->GetObjNum());
allPages->AddReference(this, branch4->GetObjNum());
CPDF_Dictionary* pagesDict = CreatePageTreeNode(allPages, this, 7);
m_pOwnedRootDict.reset(new CPDF_Dictionary());
m_pOwnedRootDict->SetReferenceFor("Pages", this, pagesDict->GetObjNum());
m_pRootDict = m_pOwnedRootDict.get();
m_PageList.SetSize(7);
}
private:
std::unique_ptr<CPDF_Dictionary> m_pOwnedRootDict;
};
} // namespace
class cpdf_document_test : public testing::Test {
public:
void SetUp() override {
CPDF_ModuleMgr* module_mgr = CPDF_ModuleMgr::Get();
module_mgr->InitPageModule();
}
void TearDown() override {}
};
TEST_F(cpdf_document_test, GetPages) {
std::unique_ptr<CPDF_TestDocumentForPages> document =
pdfium::MakeUnique<CPDF_TestDocumentForPages>();
for (int i = 0; i < 7; i++) {
CPDF_Dictionary* page = document->GetPage(i);
ASSERT_TRUE(page);
ASSERT_TRUE(page->KeyExist("PageNumbering"));
EXPECT_EQ(i, page->GetIntegerFor("PageNumbering"));
}
CPDF_Dictionary* page = document->GetPage(7);
EXPECT_FALSE(page);
}
TEST_F(cpdf_document_test, GetPagesReverseOrder) {
std::unique_ptr<CPDF_TestDocumentForPages> document =
pdfium::MakeUnique<CPDF_TestDocumentForPages>();
for (int i = 6; i >= 0; i--) {
CPDF_Dictionary* page = document->GetPage(i);
ASSERT_TRUE(page);
ASSERT_TRUE(page->KeyExist("PageNumbering"));
EXPECT_EQ(i, page->GetIntegerFor("PageNumbering"));
}
CPDF_Dictionary* page = document->GetPage(7);
EXPECT_FALSE(page);
}
TEST(cpdf_document, GetPagesInDisorder) {
std::unique_ptr<CPDF_TestDocumentForPages> document =
pdfium::MakeUnique<CPDF_TestDocumentForPages>();
CPDF_Dictionary* page = document->GetPage(1);
ASSERT_TRUE(page);
ASSERT_TRUE(page->KeyExist("PageNumbering"));
EXPECT_EQ(1, page->GetIntegerFor("PageNumbering"));
page = document->GetPage(3);
ASSERT_TRUE(page);
ASSERT_TRUE(page->KeyExist("PageNumbering"));
EXPECT_EQ(3, page->GetIntegerFor("PageNumbering"));
page = document->GetPage(7);
EXPECT_FALSE(page);
page = document->GetPage(6);
ASSERT_TRUE(page);
ASSERT_TRUE(page->KeyExist("PageNumbering"));
EXPECT_EQ(6, page->GetIntegerFor("PageNumbering"));
}
TEST_F(cpdf_document_test, UseCachedPageObjNumIfHaveNotPagesDict) {
// ObjNum can be added in CPDF_DataAvail::IsPageAvail, and PagesDict
// can be not exists in this case.
// (case, when hint table is used to page check in CPDF_DataAvail).
CPDF_Document document(pdfium::MakeUnique<CPDF_Parser>());
std::unique_ptr<CPDF_Dictionary> dict(new CPDF_Dictionary());
const int page_count = 100;
dict->SetIntegerFor("N", page_count);
document.LoadLinearizedDoc(dict.get());
ASSERT_EQ(page_count, document.GetPageCount());
CPDF_Object* page_stub = new CPDF_Dictionary();
const uint32_t obj_num = document.AddIndirectObject(page_stub);
const int test_page_num = 33;
EXPECT_FALSE(document.IsPageLoaded(test_page_num));
EXPECT_EQ(nullptr, document.GetPage(test_page_num));
document.SetPageObjNum(test_page_num, obj_num);
EXPECT_TRUE(document.IsPageLoaded(test_page_num));
EXPECT_EQ(page_stub, document.GetPage(test_page_num));
}
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