1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
|
// 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 <utility>
#include "core/fpdfapi/cpdf_modulemgr.h"
#include "core/fpdfapi/parser/cpdf_array.h"
#include "core/fpdfapi/parser/cpdf_boolean.h"
#include "core/fpdfapi/parser/cpdf_dictionary.h"
#include "core/fpdfapi/parser/cpdf_linearized_header.h"
#include "core/fpdfapi/parser/cpdf_number.h"
#include "core/fpdfapi/parser/cpdf_parser.h"
#include "core/fpdfapi/parser/cpdf_reference.h"
#include "core/fpdfapi/parser/cpdf_string.h"
#include "core/fxcrt/fx_memory.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/base/ptr_util.h"
namespace {
const int kNumTestPages = 7;
CPDF_Dictionary* CreatePageTreeNode(std::unique_ptr<CPDF_Array> kids,
CPDF_Document* pDoc,
int count) {
CPDF_Array* pUnowned = pDoc->AddIndirectObject(std::move(kids))->AsArray();
CPDF_Dictionary* pageNode = pDoc->NewIndirect<CPDF_Dictionary>();
pageNode->SetNewFor<CPDF_String>("Type", "Pages", false);
pageNode->SetNewFor<CPDF_Reference>("Kids", pDoc, pUnowned->GetObjNum());
pageNode->SetNewFor<CPDF_Number>("Count", count);
for (size_t i = 0; i < pUnowned->GetCount(); i++) {
pUnowned->GetDictAt(i)->SetNewFor<CPDF_Reference>("Parent", pDoc,
pageNode->GetObjNum());
}
return pageNode;
}
std::unique_ptr<CPDF_Dictionary> CreateNumberedPage(size_t number) {
auto page = pdfium::MakeUnique<CPDF_Dictionary>();
page->SetNewFor<CPDF_String>("Type", "Page", false);
page->SetNewFor<CPDF_Number>("PageNumbering", static_cast<int>(number));
return page;
}
class CPDF_TestDocumentForPages : public CPDF_Document {
public:
CPDF_TestDocumentForPages() : CPDF_Document(nullptr) {
// Set up test
auto zeroToTwo = pdfium::MakeUnique<CPDF_Array>();
zeroToTwo->AddNew<CPDF_Reference>(
this, AddIndirectObject(CreateNumberedPage(0))->GetObjNum());
zeroToTwo->AddNew<CPDF_Reference>(
this, AddIndirectObject(CreateNumberedPage(1))->GetObjNum());
zeroToTwo->AddNew<CPDF_Reference>(
this, AddIndirectObject(CreateNumberedPage(2))->GetObjNum());
CPDF_Dictionary* branch1 =
CreatePageTreeNode(std::move(zeroToTwo), this, 3);
auto zeroToThree = pdfium::MakeUnique<CPDF_Array>();
zeroToThree->AddNew<CPDF_Reference>(this, branch1->GetObjNum());
zeroToThree->AddNew<CPDF_Reference>(
this, AddIndirectObject(CreateNumberedPage(3))->GetObjNum());
CPDF_Dictionary* branch2 =
CreatePageTreeNode(std::move(zeroToThree), this, 4);
auto fourFive = pdfium::MakeUnique<CPDF_Array>();
fourFive->AddNew<CPDF_Reference>(
this, AddIndirectObject(CreateNumberedPage(4))->GetObjNum());
fourFive->AddNew<CPDF_Reference>(
this, AddIndirectObject(CreateNumberedPage(5))->GetObjNum());
CPDF_Dictionary* branch3 = CreatePageTreeNode(std::move(fourFive), this, 2);
auto justSix = pdfium::MakeUnique<CPDF_Array>();
justSix->AddNew<CPDF_Reference>(
this, AddIndirectObject(CreateNumberedPage(6))->GetObjNum());
CPDF_Dictionary* branch4 = CreatePageTreeNode(std::move(justSix), this, 1);
auto allPages = pdfium::MakeUnique<CPDF_Array>();
allPages->AddNew<CPDF_Reference>(this, branch2->GetObjNum());
allPages->AddNew<CPDF_Reference>(this, branch3->GetObjNum());
allPages->AddNew<CPDF_Reference>(this, branch4->GetObjNum());
CPDF_Dictionary* pagesDict =
CreatePageTreeNode(std::move(allPages), this, kNumTestPages);
m_pOwnedRootDict = pdfium::MakeUnique<CPDF_Dictionary>();
m_pOwnedRootDict->SetNewFor<CPDF_Reference>("Pages", this,
pagesDict->GetObjNum());
m_pRootDict = m_pOwnedRootDict.get();
m_PageList.resize(kNumTestPages);
}
void SetTreeSize(int size) {
m_pOwnedRootDict->SetNewFor<CPDF_Number>("Count", size);
m_PageList.resize(size);
}
private:
std::unique_ptr<CPDF_Dictionary> m_pOwnedRootDict;
};
class CPDF_TestDocumentWithPageWithoutPageNum : public CPDF_Document {
public:
CPDF_TestDocumentWithPageWithoutPageNum() : CPDF_Document(nullptr) {
// Set up test
auto allPages = pdfium::MakeUnique<CPDF_Array>();
allPages->AddNew<CPDF_Reference>(
this, AddIndirectObject(CreateNumberedPage(0))->GetObjNum());
allPages->AddNew<CPDF_Reference>(
this, AddIndirectObject(CreateNumberedPage(1))->GetObjNum());
// Page without pageNum.
allPages->Add(CreateNumberedPage(2));
CPDF_Dictionary* pagesDict =
CreatePageTreeNode(std::move(allPages), this, 3);
m_pOwnedRootDict = pdfium::MakeUnique<CPDF_Dictionary>();
m_pOwnedRootDict->SetNewFor<CPDF_Reference>("Pages", this,
pagesDict->GetObjNum());
m_pRootDict = m_pOwnedRootDict.get();
m_PageList.resize(3);
}
private:
std::unique_ptr<CPDF_Dictionary> m_pOwnedRootDict;
};
class TestLinearized : public CPDF_LinearizedHeader {
public:
explicit TestLinearized(CPDF_Dictionary* dict)
: CPDF_LinearizedHeader(dict) {}
};
} // 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 { CPDF_ModuleMgr::Destroy(); }
};
TEST_F(cpdf_document_test, GetPages) {
std::unique_ptr<CPDF_TestDocumentForPages> document =
pdfium::MakeUnique<CPDF_TestDocumentForPages>();
for (int i = 0; i < kNumTestPages; 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(kNumTestPages);
EXPECT_FALSE(page);
}
TEST_F(cpdf_document_test, GetPageWithoutObjNumTwice) {
std::unique_ptr<CPDF_TestDocumentWithPageWithoutPageNum> document =
pdfium::MakeUnique<CPDF_TestDocumentWithPageWithoutPageNum>();
const CPDF_Dictionary* page = document->GetPage(2);
ASSERT_TRUE(page);
// This is page without obj num.
ASSERT_EQ(0ul, page->GetObjNum());
const CPDF_Dictionary* second_call_page = document->GetPage(2);
EXPECT_TRUE(second_call_page);
EXPECT_EQ(page, second_call_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(kNumTestPages);
EXPECT_FALSE(page);
}
TEST_F(cpdf_document_test, 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(kNumTestPages);
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>());
auto dict = pdfium::MakeUnique<CPDF_Dictionary>();
dict->SetNewFor<CPDF_Boolean>("Linearized", true);
const int page_count = 100;
dict->SetNewFor<CPDF_Number>("N", page_count);
TestLinearized linearized(dict.get());
document.LoadLinearizedDoc(&linearized);
ASSERT_EQ(page_count, document.GetPageCount());
CPDF_Object* page_stub = document.NewIndirect<CPDF_Dictionary>();
const uint32_t obj_num = page_stub->GetObjNum();
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));
}
TEST_F(cpdf_document_test, CountGreaterThanPageTree) {
std::unique_ptr<CPDF_TestDocumentForPages> document =
pdfium::MakeUnique<CPDF_TestDocumentForPages>();
document->SetTreeSize(kNumTestPages + 3);
for (int i = 0; i < kNumTestPages; i++)
EXPECT_TRUE(document->GetPage(i));
for (int i = kNumTestPages; i < kNumTestPages + 4; i++)
EXPECT_FALSE(document->GetPage(i));
EXPECT_TRUE(document->GetPage(kNumTestPages - 1));
}
|
