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-rw-r--r--core/fpdfapi/fpdf_parser/cpdf_array_unittest.cpp181
-rw-r--r--core/fpdfapi/fpdf_parser/include/cpdf_array.h8
2 files changed, 189 insertions, 0 deletions
diff --git a/core/fpdfapi/fpdf_parser/cpdf_array_unittest.cpp b/core/fpdfapi/fpdf_parser/cpdf_array_unittest.cpp
new file mode 100644
index 0000000000..58642a610f
--- /dev/null
+++ b/core/fpdfapi/fpdf_parser/cpdf_array_unittest.cpp
@@ -0,0 +1,181 @@
+// 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/fpdf_parser/include/cpdf_array.h"
+#include "core/fpdfapi/fpdf_parser/include/cpdf_number.h"
+#include "core/fpdfapi/fpdf_parser/include/cpdf_reference.h"
+
+#include <memory>
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace {
+
+using ScopedArray = std::unique_ptr<CPDF_Array, ReleaseDeleter<CPDF_Array>>;
+
+} // namespace
+
+TEST(cpdf_array, RemoveAt) {
+ {
+ int elems[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+ ScopedArray arr(new CPDF_Array);
+ for (size_t i = 0; i < FX_ArraySize(elems); ++i)
+ arr->AddInteger(elems[i]);
+ arr->RemoveAt(3, 3);
+ int expected[] = {1, 2, 3, 7, 8, 9, 10};
+ EXPECT_EQ(FX_ArraySize(expected), arr->GetCount());
+ for (size_t i = 0; i < FX_ArraySize(expected); ++i)
+ EXPECT_EQ(expected[i], arr->GetIntegerAt(i));
+ arr->RemoveAt(4, 2);
+ int expected2[] = {1, 2, 3, 7, 10};
+ EXPECT_EQ(FX_ArraySize(expected2), arr->GetCount());
+ for (size_t i = 0; i < FX_ArraySize(expected2); ++i)
+ EXPECT_EQ(expected2[i], arr->GetIntegerAt(i));
+ }
+ {
+ // When the range is out of bound, RemoveAt has no effect.
+ int elems[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+ ScopedArray arr(new CPDF_Array);
+ for (size_t i = 0; i < FX_ArraySize(elems); ++i)
+ arr->AddInteger(elems[i]);
+ arr->RemoveAt(8, 5);
+ EXPECT_EQ(FX_ArraySize(elems), arr->GetCount());
+ for (size_t i = 0; i < FX_ArraySize(elems); ++i)
+ EXPECT_EQ(elems[i], arr->GetIntegerAt(i));
+ arr->RemoveAt(0, 12);
+ EXPECT_EQ(FX_ArraySize(elems), arr->GetCount());
+ arr->RemoveAt(11, 1);
+ EXPECT_EQ(FX_ArraySize(elems), arr->GetCount());
+ }
+}
+
+TEST(cpdf_array, InsertAt) {
+ {
+ int elems[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+ ScopedArray arr(new CPDF_Array);
+ for (size_t i = 0; i < FX_ArraySize(elems); ++i)
+ arr->InsertAt(i, new CPDF_Number(elems[i]));
+ EXPECT_EQ(FX_ArraySize(elems), arr->GetCount());
+ for (size_t i = 0; i < FX_ArraySize(elems); ++i)
+ EXPECT_EQ(elems[i], arr->GetIntegerAt(i));
+ arr->InsertAt(3, new CPDF_Number(33));
+ arr->InsertAt(6, new CPDF_Number(55));
+ arr->InsertAt(12, new CPDF_Number(12));
+ int expected[] = {1, 2, 3, 33, 4, 5, 55, 6, 7, 8, 9, 10, 12};
+ EXPECT_EQ(FX_ArraySize(expected), arr->GetCount());
+ for (size_t i = 0; i < FX_ArraySize(expected); ++i)
+ EXPECT_EQ(expected[i], arr->GetIntegerAt(i));
+ }
+ {
+ // When the position to insert is beyond the upper bound,
+ // an element is inserted at that position while other unfilled
+ // positions have nullptr.
+ int elems[] = {1, 2};
+ ScopedArray arr(new CPDF_Array);
+ for (size_t i = 0; i < FX_ArraySize(elems); ++i)
+ arr->InsertAt(i, new CPDF_Number(elems[i]));
+ arr->InsertAt(10, new CPDF_Number(10));
+ EXPECT_EQ(11, arr->GetCount());
+ for (size_t i = 0; i < FX_ArraySize(elems); ++i)
+ EXPECT_EQ(elems[i], arr->GetIntegerAt(i));
+ for (size_t i = FX_ArraySize(elems); i < 10; ++i)
+ EXPECT_EQ(nullptr, arr->GetObjectAt(i));
+ EXPECT_EQ(10, arr->GetIntegerAt(10));
+ }
+}
+
+TEST(cpdf_array, Clone) {
+ {
+ // Basic case.
+ int elems[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+ ScopedArray arr(new CPDF_Array);
+ for (size_t i = 0; i < FX_ArraySize(elems); ++i)
+ arr->InsertAt(i, new CPDF_Number(elems[i]));
+ ScopedArray arr2(arr->Clone()->AsArray());
+ EXPECT_EQ(arr->GetCount(), arr2->GetCount());
+ for (size_t i = 0; i < FX_ArraySize(elems); ++i) {
+ // Clone() always create new objects.
+ EXPECT_NE(arr->GetObjectAt(i), arr2->GetObjectAt(i));
+ EXPECT_EQ(arr->GetIntegerAt(i), arr2->GetIntegerAt(i));
+ }
+ }
+ {
+ // Clone() with and without dereferencing reference objects.
+ static const size_t kNumOfRows = 3;
+ static const size_t kNumOfRowElems = 5;
+ int elems[kNumOfRows][kNumOfRowElems] = {
+ {1, 2, 3, 4, 5}, {10, 9, 8, 7, 6}, {11, 12, 13, 14, 15}};
+ ScopedArray arr(new CPDF_Array);
+ // Indirect references to indirect objects.
+ std::unique_ptr<CPDF_IndirectObjectHolder> obj_holder(
+ new CPDF_IndirectObjectHolder(nullptr));
+ for (size_t i = 0; i < kNumOfRows; ++i) {
+ CPDF_Array* arr_elem = new CPDF_Array;
+ for (size_t j = 0; j < kNumOfRowElems; ++j) {
+ CPDF_Number* obj = new CPDF_Number(elems[i][j]);
+ // Starts object number from 1.
+ int obj_num = i * kNumOfRowElems + j + 1;
+ obj_holder->InsertIndirectObject(obj_num, obj);
+ arr_elem->InsertAt(j, new CPDF_Reference(obj_holder.get(), obj_num),
+ obj_holder.get());
+ }
+ arr->InsertAt(i, arr_elem);
+ }
+ ASSERT_EQ(kNumOfRows, arr->GetCount());
+ // Not dereferencing reference objects means just creating new references
+ // instead of new copies of direct objects.
+ ScopedArray arr1(arr->Clone(FALSE)->AsArray());
+ EXPECT_EQ(arr->GetCount(), arr1->GetCount());
+ // Dereferencing reference objects creates new copies of direct objects.
+ ScopedArray arr2(arr->Clone(TRUE)->AsArray());
+ EXPECT_EQ(arr->GetCount(), arr2->GetCount());
+ for (size_t i = 0; i < kNumOfRows; ++i) {
+ CPDF_Array* arr_elem = arr->GetObjectAt(i)->AsArray();
+ CPDF_Array* arr1_elem = arr1->GetObjectAt(i)->AsArray();
+ CPDF_Array* arr2_elem = arr2->GetObjectAt(i)->AsArray();
+ EXPECT_NE(arr_elem, arr1_elem);
+ EXPECT_NE(arr_elem, arr2_elem);
+ for (size_t j = 0; j < kNumOfRowElems; ++j) {
+ auto elem_obj = arr_elem->GetObjectAt(j);
+ auto elem_obj1 = arr1_elem->GetObjectAt(j);
+ auto elem_obj2 = arr2_elem->GetObjectAt(j);
+ // Results from not deferencing reference objects.
+ EXPECT_NE(elem_obj, elem_obj1);
+ EXPECT_TRUE(elem_obj1->IsReference());
+ EXPECT_EQ(elem_obj->GetDirect(), elem_obj1->GetDirect());
+ EXPECT_EQ(elem_obj->GetInteger(), elem_obj1->GetInteger());
+ // Results from deferencing reference objects.
+ EXPECT_NE(elem_obj, elem_obj2);
+ EXPECT_TRUE(elem_obj2->IsNumber());
+ EXPECT_NE(elem_obj->GetDirect(), elem_obj2);
+ EXPECT_EQ(elem_obj->GetObjNum(), elem_obj2->GetObjNum());
+ EXPECT_EQ(elem_obj->GetInteger(), elem_obj2->GetInteger());
+ }
+ }
+ arr.reset();
+ ASSERT_EQ(kNumOfRows, arr1->GetCount());
+ for (size_t i = 0; i < kNumOfRows; ++i) {
+ for (size_t j = 0; j < kNumOfRowElems; ++j) {
+ // Results from not deferencing reference objects.
+ auto elem_obj1 = arr1->GetObjectAt(i)->AsArray()->GetObjectAt(j);
+ EXPECT_TRUE(elem_obj1->IsReference());
+ EXPECT_EQ(elems[i][j], elem_obj1->GetInteger());
+ // Results from deferencing reference objects.
+ EXPECT_EQ(elems[i][j],
+ arr2->GetObjectAt(i)->AsArray()->GetIntegerAt(j));
+ }
+ }
+ }
+}
+
+TEST(cpdf_array, Iterator) {
+ int elems[] = {-23, -11, 3, 455, 2345877,
+ 0, 7895330, -12564334, 10000, -100000};
+ ScopedArray arr(new CPDF_Array);
+ for (size_t i = 0; i < FX_ArraySize(elems); ++i)
+ arr->InsertAt(i, new CPDF_Number(elems[i]));
+ size_t index = 0;
+ for (const auto& it : *arr)
+ EXPECT_EQ(elems[index++], it->AsNumber()->GetInteger());
+}
diff --git a/core/fpdfapi/fpdf_parser/include/cpdf_array.h b/core/fpdfapi/fpdf_parser/include/cpdf_array.h
index ac3bf41b45..dfe03b9d70 100644
--- a/core/fpdfapi/fpdf_parser/include/cpdf_array.h
+++ b/core/fpdfapi/fpdf_parser/include/cpdf_array.h
@@ -16,6 +16,9 @@
class CPDF_Array : public CPDF_Object {
public:
+ using iterator = std::vector<CPDF_Object*>::iterator;
+ using const_iterator = std::vector<CPDF_Object*>::const_iterator;
+
CPDF_Array();
// CPDF_Object.
@@ -57,6 +60,11 @@ class CPDF_Array : public CPDF_Object {
AddReference(pDoc, obj->GetObjNum());
}
+ iterator begin() { return m_Objects.begin(); }
+ iterator end() { return m_Objects.end(); }
+ const_iterator begin() const { return m_Objects.begin(); }
+ const_iterator end() const { return m_Objects.end(); }
+
protected:
~CPDF_Array() override;
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-22 04:03:10 +0000