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-rw-r--r--core/fpdfapi/edit/cpdf_creator.cpp35
-rw-r--r--core/fpdfapi/edit/cpdf_creator_embeddertest.cpp43
-rw-r--r--core/fpdfapi/parser/cpdf_parser.cpp116
-rw-r--r--core/fpdfapi/parser/cpdf_parser.h1
4 files changed, 51 insertions, 144 deletions
diff --git a/core/fpdfapi/edit/cpdf_creator.cpp b/core/fpdfapi/edit/cpdf_creator.cpp
index b347d45dce..9735460f41 100644
--- a/core/fpdfapi/edit/cpdf_creator.cpp
+++ b/core/fpdfapi/edit/cpdf_creator.cpp
@@ -323,34 +323,15 @@ bool CPDF_Creator::WriteOldIndirectObject(uint32_t objnum) {
m_ObjectOffsets[objnum] = m_Archive->CurrentOffset();
bool bExistInMap = !!m_pDocument->GetIndirectObject(objnum);
- const CPDF_Parser::ObjectType object_type = m_pParser->GetObjectType(objnum);
- if (m_pParser->IsVersionUpdated() || m_bSecurityChanged || bExistInMap ||
- (object_type == CPDF_Parser::ObjectType::kCompressed && m_pEncryptDict)) {
- CPDF_Object* pObj = m_pDocument->GetOrParseIndirectObject(objnum);
- if (!pObj) {
- m_ObjectOffsets.erase(objnum);
- return true;
- }
- if (!WriteIndirectObj(pObj->GetObjNum(), pObj))
- return false;
- if (!bExistInMap)
- m_pDocument->DeleteIndirectObject(objnum);
- } else {
- std::vector<uint8_t> buffer = m_pParser->GetIndirectBinary(objnum);
- if (buffer.empty())
- return true;
- if (object_type == CPDF_Parser::ObjectType::kCompressed) {
- if (!m_Archive->WriteDWord(objnum) ||
- !m_Archive->WriteString(" 0 obj ") ||
- !m_Archive->WriteBlock(buffer.data(), buffer.size()) ||
- !m_Archive->WriteString("\r\nendobj\r\n")) {
- return false;
- }
- } else {
- if (!m_Archive->WriteBlock(buffer.data(), buffer.size()))
- return false;
- }
+ CPDF_Object* pObj = m_pDocument->GetOrParseIndirectObject(objnum);
+ if (!pObj) {
+ m_ObjectOffsets.erase(objnum);
+ return true;
}
+ if (!WriteIndirectObj(pObj->GetObjNum(), pObj))
+ return false;
+ if (!bExistInMap)
+ m_pDocument->DeleteIndirectObject(objnum);
return true;
}
diff --git a/core/fpdfapi/edit/cpdf_creator_embeddertest.cpp b/core/fpdfapi/edit/cpdf_creator_embeddertest.cpp
new file mode 100644
index 0000000000..def7d50a97
--- /dev/null
+++ b/core/fpdfapi/edit/cpdf_creator_embeddertest.cpp
@@ -0,0 +1,43 @@
+// Copyright 2017 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 <memory>
+#include <string>
+#include <vector>
+
+#include "core/fxcrt/fx_system.h"
+#include "public/fpdf_annot.h"
+#include "public/fpdf_edit.h"
+#include "public/fpdfview.h"
+#include "testing/embedder_test.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+class CPDF_CreatorEmbedderTest : public EmbedderTest {};
+
+TEST_F(CPDF_CreatorEmbedderTest, SavedDocsAreEqualAfterParse) {
+ ASSERT_TRUE(OpenDocument("annotation_stamp_with_ap.pdf"));
+ // Save without additional data reading.
+ EXPECT_TRUE(FPDF_SaveAsCopy(document(), this, 0));
+ const std::string saved_doc_1 = GetString();
+ ClearString();
+
+ {
+ // Do some read only operations.
+ ASSERT_GE(1, FPDF_GetPageCount(document()));
+ FPDF_PAGE page = FPDF_LoadPage(document(), 0);
+ ASSERT_TRUE(page);
+ FPDF_BITMAP new_bitmap =
+ RenderPageWithFlags(page, form_handle(), FPDF_ANNOT);
+ FPDFBitmap_Destroy(new_bitmap);
+ UnloadPage(page);
+ }
+
+ // Save when we have additional loaded data.
+ EXPECT_TRUE(FPDF_SaveAsCopy(document(), this, 0));
+ const std::string saved_doc_2 = GetString();
+ ClearString();
+
+ // The sizes of saved docs should be equal.
+ EXPECT_EQ(saved_doc_1.size(), saved_doc_2.size());
+}
diff --git a/core/fpdfapi/parser/cpdf_parser.cpp b/core/fpdfapi/parser/cpdf_parser.cpp
index 32c616c1c6..da51eb1c83 100644
--- a/core/fpdfapi/parser/cpdf_parser.cpp
+++ b/core/fpdfapi/parser/cpdf_parser.cpp
@@ -1258,122 +1258,6 @@ FX_FILESIZE CPDF_Parser::GetObjectSize(uint32_t objnum) const {
return *it - offset;
}
-std::vector<uint8_t> CPDF_Parser::GetIndirectBinary(uint32_t objnum) {
- std::vector<uint8_t> buffer;
- if (!IsValidObjectNumber(objnum))
- return buffer;
-
- if (GetObjectType(objnum) == ObjectType::kCompressed) {
- CFX_RetainPtr<CPDF_StreamAcc> pObjStream =
- GetObjectStream(m_ObjectInfo[objnum].pos);
- if (!pObjStream)
- return buffer;
-
- int32_t offset = GetStreamFirst(pObjStream);
- const uint8_t* pData = pObjStream->GetData();
- uint32_t totalsize = pObjStream->GetSize();
- auto file = pdfium::MakeRetain<CFX_MemoryStream>(
- const_cast<uint8_t*>(pData), static_cast<size_t>(totalsize), false);
- CPDF_SyntaxParser syntax;
- syntax.InitParser(file, 0);
-
- for (int i = GetStreamNCount(pObjStream); i > 0; --i) {
- uint32_t thisnum = syntax.GetDirectNum();
- uint32_t thisoff = syntax.GetDirectNum();
- if (thisnum != objnum)
- continue;
-
- size_t size = 0;
- if (i == 1) {
- size = totalsize - (thisoff + offset);
- } else {
- syntax.GetDirectNum(); // Skip nextnum.
- uint32_t nextoff = syntax.GetDirectNum();
- size = nextoff - thisoff;
- }
-
- buffer.resize(size);
- memcpy(buffer.data(), pData + thisoff + offset, size);
- break;
- }
- return buffer;
- }
-
- if (GetObjectType(objnum) != ObjectType::kNotCompressed)
- return buffer;
-
- FX_FILESIZE pos = m_ObjectInfo[objnum].pos;
- if (pos == 0)
- return buffer;
-
- FX_FILESIZE SavedPos = m_pSyntax->GetPos();
- m_pSyntax->SetPos(pos);
-
- bool bIsNumber;
- CFX_ByteString word = m_pSyntax->GetNextWord(&bIsNumber);
- if (!bIsNumber) {
- m_pSyntax->SetPos(SavedPos);
- return buffer;
- }
-
- uint32_t parser_objnum = FXSYS_atoui(word.c_str());
- if (parser_objnum && parser_objnum != objnum) {
- m_pSyntax->SetPos(SavedPos);
- return buffer;
- }
-
- word = m_pSyntax->GetNextWord(&bIsNumber);
- if (!bIsNumber) {
- m_pSyntax->SetPos(SavedPos);
- return buffer;
- }
-
- if (m_pSyntax->GetKeyword() != "obj") {
- m_pSyntax->SetPos(SavedPos);
- return buffer;
- }
-
- auto it = m_SortedOffset.find(pos);
- if (it == m_SortedOffset.end() || ++it == m_SortedOffset.end()) {
- m_pSyntax->SetPos(SavedPos);
- return buffer;
- }
-
- FX_FILESIZE nextoff = *it;
- bool bNextOffValid = false;
- if (nextoff != pos) {
- m_pSyntax->SetPos(nextoff);
- word = m_pSyntax->GetNextWord(&bIsNumber);
- if (word == "xref") {
- bNextOffValid = true;
- } else if (bIsNumber) {
- word = m_pSyntax->GetNextWord(&bIsNumber);
- if (bIsNumber && m_pSyntax->GetKeyword() == "obj") {
- bNextOffValid = true;
- }
- }
- }
-
- if (!bNextOffValid) {
- m_pSyntax->SetPos(pos);
- while (1) {
- if (m_pSyntax->GetKeyword() == "endobj")
- break;
-
- if (m_pSyntax->GetPos() == m_pSyntax->m_FileLen)
- break;
- }
- nextoff = m_pSyntax->GetPos();
- }
-
- size_t size = (uint32_t)(nextoff - pos);
- buffer.resize(size);
- m_pSyntax->SetPos(pos);
- m_pSyntax->ReadBlock(buffer.data(), size);
- m_pSyntax->SetPos(SavedPos);
- return buffer;
-}
-
std::unique_ptr<CPDF_Object> CPDF_Parser::ParseIndirectObjectAt(
CPDF_IndirectObjectHolder* pObjList,
FX_FILESIZE pos,
diff --git a/core/fpdfapi/parser/cpdf_parser.h b/core/fpdfapi/parser/cpdf_parser.h
index c379905aed..fd74c5471e 100644
--- a/core/fpdfapi/parser/cpdf_parser.h
+++ b/core/fpdfapi/parser/cpdf_parser.h
@@ -91,7 +91,6 @@ class CPDF_Parser {
FX_FILESIZE GetObjectOffset(uint32_t objnum) const;
FX_FILESIZE GetObjectSize(uint32_t objnum) const;
- std::vector<uint8_t> GetIndirectBinary(uint32_t objnum);
int GetFileVersion() const { return m_FileVersion; }
bool IsXRefStream() const { return m_bXRefStream; }
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-01 10:38:40 +0000