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-rw-r--r--core/fpdfapi/parser/cpdf_document.cpp154
-rw-r--r--core/fpdfapi/parser/cpdf_document.h6
2 files changed, 81 insertions, 79 deletions
diff --git a/core/fpdfapi/parser/cpdf_document.cpp b/core/fpdfapi/parser/cpdf_document.cpp
index 1794288e62..ad84a15a97 100644
--- a/core/fpdfapi/parser/cpdf_document.cpp
+++ b/core/fpdfapi/parser/cpdf_document.cpp
@@ -240,83 +240,6 @@ void InsertWidthArray1(CFX_Font* pFont,
InsertWidthArrayImpl(widths, size, pWidthArray);
}
-int InsertDeletePDFPage(CPDF_Document* pDoc,
- CPDF_Dictionary* pPages,
- int nPagesToGo,
- CPDF_Dictionary* pPage,
- bool bInsert,
- std::set<CPDF_Dictionary*>* pVisited) {
- CPDF_Array* pKidList = pPages->GetArrayFor("Kids");
- if (!pKidList)
- return -1;
-
- for (size_t i = 0; i < pKidList->GetCount(); i++) {
- CPDF_Dictionary* pKid = pKidList->GetDictAt(i);
- if (pKid->GetStringFor("Type") == "Page") {
- if (nPagesToGo == 0) {
- if (bInsert) {
- pKidList->InsertAt(i, new CPDF_Reference(pDoc, pPage->GetObjNum()));
- pPage->SetReferenceFor("Parent", pDoc, pPages->GetObjNum());
- } else {
- pKidList->RemoveAt(i);
- }
- pPages->SetIntegerFor(
- "Count", pPages->GetIntegerFor("Count") + (bInsert ? 1 : -1));
- return 1;
- }
- nPagesToGo--;
- } else {
- int nPages = pKid->GetIntegerFor("Count");
- if (nPagesToGo < nPages) {
- if (pdfium::ContainsKey(*pVisited, pKid))
- return -1;
-
- pdfium::ScopedSetInsertion<CPDF_Dictionary*> insertion(pVisited, pKid);
- if (InsertDeletePDFPage(pDoc, pKid, nPagesToGo, pPage, bInsert,
- pVisited) < 0) {
- return -1;
- }
- pPages->SetIntegerFor(
- "Count", pPages->GetIntegerFor("Count") + (bInsert ? 1 : -1));
- return 1;
- }
- nPagesToGo -= nPages;
- }
- }
- return 0;
-}
-
-int InsertNewPage(CPDF_Document* pDoc,
- int iPage,
- CPDF_Dictionary* pPageDict,
- CFX_ArrayTemplate<uint32_t>& pageList) {
- CPDF_Dictionary* pRoot = pDoc->GetRoot();
- CPDF_Dictionary* pPages = pRoot ? pRoot->GetDictFor("Pages") : nullptr;
- if (!pPages)
- return -1;
-
- int nPages = pDoc->GetPageCount();
- if (iPage < 0 || iPage > nPages)
- return -1;
-
- if (iPage == nPages) {
- CPDF_Array* pPagesList = pPages->GetArrayFor("Kids");
- if (!pPagesList) {
- pPagesList = new CPDF_Array;
- pPages->SetFor("Kids", pPagesList);
- }
- pPagesList->Add(new CPDF_Reference(pDoc, pPageDict->GetObjNum()));
- pPages->SetIntegerFor("Count", nPages + 1);
- pPageDict->SetReferenceFor("Parent", pDoc, pPages->GetObjNum());
- } else {
- std::set<CPDF_Dictionary*> stack = {pPages};
- if (InsertDeletePDFPage(pDoc, pPages, iPage, pPageDict, true, &stack) < 0)
- return -1;
- }
- pageList.InsertAt(iPage, pPageDict->GetObjNum());
- return iPage;
-}
-
int CountPages(CPDF_Dictionary* pPages,
std::set<CPDF_Dictionary*>* visited_pages) {
int count = pPages->GetIntegerFor("Count");
@@ -710,13 +633,86 @@ CPDF_Dictionary* CPDF_Document::CreateNewPage(int iPage) {
CPDF_Dictionary* pDict = new CPDF_Dictionary(m_pByteStringPool);
pDict->SetNameFor("Type", "Page");
uint32_t dwObjNum = AddIndirectObject(pDict);
- if (InsertNewPage(this, iPage, pDict, m_PageList) < 0) {
+ if (!InsertNewPage(iPage, pDict)) {
ReleaseIndirectObject(dwObjNum);
return nullptr;
}
return pDict;
}
+bool CPDF_Document::InsertDeletePDFPage(CPDF_Dictionary* pPages,
+ int nPagesToGo,
+ CPDF_Dictionary* pPageDict,
+ bool bInsert,
+ std::set<CPDF_Dictionary*>* pVisited) {
+ CPDF_Array* pKidList = pPages->GetArrayFor("Kids");
+ if (!pKidList)
+ return false;
+
+ for (size_t i = 0; i < pKidList->GetCount(); i++) {
+ CPDF_Dictionary* pKid = pKidList->GetDictAt(i);
+ if (pKid->GetStringFor("Type") == "Page") {
+ if (nPagesToGo != 0) {
+ nPagesToGo--;
+ continue;
+ }
+ if (bInsert) {
+ pKidList->InsertAt(i, new CPDF_Reference(this, pPageDict->GetObjNum()));
+ pPageDict->SetReferenceFor("Parent", this, pPages->GetObjNum());
+ } else {
+ pKidList->RemoveAt(i);
+ }
+ pPages->SetIntegerFor(
+ "Count", pPages->GetIntegerFor("Count") + (bInsert ? 1 : -1));
+ break;
+ }
+ int nPages = pKid->GetIntegerFor("Count");
+ if (nPagesToGo >= nPages) {
+ nPagesToGo -= nPages;
+ continue;
+ }
+ if (pdfium::ContainsKey(*pVisited, pKid))
+ return false;
+
+ pdfium::ScopedSetInsertion<CPDF_Dictionary*> insertion(pVisited, pKid);
+ if (!InsertDeletePDFPage(pKid, nPagesToGo, pPageDict, bInsert, pVisited))
+ return false;
+
+ pPages->SetIntegerFor("Count",
+ pPages->GetIntegerFor("Count") + (bInsert ? 1 : -1));
+ break;
+ }
+ return true;
+}
+
+bool CPDF_Document::InsertNewPage(int iPage, CPDF_Dictionary* pPageDict) {
+ CPDF_Dictionary* pRoot = GetRoot();
+ CPDF_Dictionary* pPages = pRoot ? pRoot->GetDictFor("Pages") : nullptr;
+ if (!pPages)
+ return false;
+
+ int nPages = GetPageCount();
+ if (iPage < 0 || iPage > nPages)
+ return false;
+
+ if (iPage == nPages) {
+ CPDF_Array* pPagesList = pPages->GetArrayFor("Kids");
+ if (!pPagesList) {
+ pPagesList = new CPDF_Array;
+ pPages->SetFor("Kids", pPagesList);
+ }
+ pPagesList->Add(new CPDF_Reference(this, pPageDict->GetObjNum()));
+ pPages->SetIntegerFor("Count", nPages + 1);
+ pPageDict->SetReferenceFor("Parent", this, pPages->GetObjNum());
+ } else {
+ std::set<CPDF_Dictionary*> stack = {pPages};
+ if (!InsertDeletePDFPage(pPages, iPage, pPageDict, true, &stack))
+ return false;
+ }
+ m_PageList.InsertAt(iPage, pPageDict->GetObjNum());
+ return true;
+}
+
void CPDF_Document::DeletePage(int iPage) {
CPDF_Dictionary* pPages = GetPagesDict();
if (!pPages)
@@ -727,7 +723,7 @@ void CPDF_Document::DeletePage(int iPage) {
return;
std::set<CPDF_Dictionary*> stack = {pPages};
- if (InsertDeletePDFPage(this, pPages, iPage, nullptr, false, &stack) < 0)
+ if (!InsertDeletePDFPage(pPages, iPage, nullptr, false, &stack))
return;
m_PageList.RemoveAt(iPage);
diff --git a/core/fpdfapi/parser/cpdf_document.h b/core/fpdfapi/parser/cpdf_document.h
index d8e5cb977e..e1135260ee 100644
--- a/core/fpdfapi/parser/cpdf_document.h
+++ b/core/fpdfapi/parser/cpdf_document.h
@@ -124,6 +124,12 @@ class CPDF_Document : public CPDF_IndirectObjectHolder {
bool bVert,
CFX_ByteString basefont,
std::function<void(FX_WCHAR, FX_WCHAR, CPDF_Array*)> Insert);
+ bool InsertDeletePDFPage(CPDF_Dictionary* pPages,
+ int nPagesToGo,
+ CPDF_Dictionary* pPageDict,
+ bool bInsert,
+ std::set<CPDF_Dictionary*>* pVisited);
+ bool InsertNewPage(int iPage, CPDF_Dictionary* pPageDict);
std::unique_ptr<CPDF_Parser> m_pParser;
CPDF_Dictionary* m_pRootDict;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 09:05:23 +0000