Revert "Add type cast definitions for CPDF_Reference."
[pdfium.git] / fpdfsdk / src / fpdfdoc.cpp
index edd61f9..8a4d619 100644 (file)
 // Copyright 2014 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.
+
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
+#include "../../public/fpdf_doc.h"
 #include "../include/fsdk_define.h"
-#include "../include/fpdfdoc.h"
-
-static int this_module = 0;
-
-static CPDF_Bookmark FindBookmark(CPDF_BookmarkTree& tree, CPDF_Bookmark This, const CFX_WideString& title)
-{
-       if (This != NULL) {
-               // First check this item
-               CFX_WideString this_title = This.GetTitle();
-               if (this_title.CompareNoCase(title) == 0)
-                       return This;
-       }
-       // go into children items
-       CPDF_Bookmark Child = tree.GetFirstChild(This);
-       while (Child != NULL) {
-               // check if this item
-               CPDF_Bookmark Found = FindBookmark(tree, Child, title);
-               if (Found) return Found;
-               Child = tree.GetNextSibling(Child);
-       }
-       return NULL;
-}
 
-DLLEXPORT FPDF_BOOKMARK STDCALL FPDFBookmark_Find(FPDF_DOCUMENT document, FPDF_WIDESTRING title)
-{
-       if (document == NULL) return NULL;
-       if (title == NULL || title[0] == 0) return NULL;
-
-       CPDF_Document* pDoc = (CPDF_Document*)document;
-       CPDF_BookmarkTree tree(pDoc);
+namespace {
+
+int THISMODULE = 0;
+
+CPDF_Bookmark FindBookmark(const CPDF_BookmarkTree& tree,
+                           CPDF_Bookmark bookmark,
+                           const CFX_WideString& title) {
+  if (bookmark && bookmark.GetTitle().CompareNoCase(title.c_str()) == 0) {
+    // First check this item
+    return bookmark;
+  }
+  // go into children items
+  CPDF_Bookmark child = tree.GetFirstChild(bookmark);
+  while (child) {
+    // check if this item
+    CPDF_Bookmark found = FindBookmark(tree, child, title);
+    if (found)
+      return found;
+    child = tree.GetNextSibling(child);
+  }
+  return CPDF_Bookmark();
+}
 
-       CFX_WideString wstr = CFX_WideString::FromUTF16LE(title);
-       return FindBookmark(tree, NULL, wstr);
+void ReleaseLinkList(void* data) {
+  delete (CPDF_LinkList*)data;
 }
 
-DLLEXPORT FPDF_DEST STDCALL FPDFBookmark_GetDest(FPDF_DOCUMENT document, FPDF_BOOKMARK bookmark)
-{
-       if (document == NULL) return NULL;
-       if (bookmark == NULL) return NULL;
+CPDF_LinkList* GetLinkList(CPDF_Page* page) {
+  if (!page)
+    return nullptr;
+
+  // Link list is stored with the document
+  CPDF_Document* pDoc = page->m_pDocument;
+  CPDF_LinkList* pLinkList = (CPDF_LinkList*)pDoc->GetPrivateData(&THISMODULE);
+  if (!pLinkList) {
+    pLinkList = new CPDF_LinkList;
+    pDoc->SetPrivateData(&THISMODULE, pLinkList, ReleaseLinkList);
+  }
+  return pLinkList;
+}
 
-       CPDF_Bookmark Bookmark = (CPDF_Dictionary*)bookmark;
-       CPDF_Document* pDoc = (CPDF_Document*)document;
-       CPDF_Dest dest = Bookmark.GetDest(pDoc);
-       if (dest != NULL) return dest;
+}  // namespace
+
+DLLEXPORT FPDF_BOOKMARK STDCALL
+FPDFBookmark_GetFirstChild(FPDF_DOCUMENT document, FPDF_BOOKMARK pDict) {
+  CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
+  if (!pDoc)
+    return nullptr;
+  CPDF_BookmarkTree tree(pDoc);
+  CPDF_Bookmark bookmark =
+      CPDF_Bookmark(ToDictionary(static_cast<CPDF_Object*>(pDict)));
+  return tree.GetFirstChild(bookmark).GetDict();
+}
 
-       // If this bookmark is not directly associated with a dest, we try to get action
-       CPDF_Action Action = Bookmark.GetAction();
-       if (Action == NULL) return NULL;
-       return Action.GetDest(pDoc);
+DLLEXPORT FPDF_BOOKMARK STDCALL
+FPDFBookmark_GetNextSibling(FPDF_DOCUMENT document, FPDF_BOOKMARK pDict) {
+  if (!pDict)
+    return nullptr;
+  CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
+  if (!pDoc)
+    return nullptr;
+  CPDF_BookmarkTree tree(pDoc);
+  CPDF_Bookmark bookmark =
+      CPDF_Bookmark(ToDictionary(static_cast<CPDF_Object*>(pDict)));
+  return tree.GetNextSibling(bookmark).GetDict();
 }
 
-DLLEXPORT FPDF_ACTION STDCALL FPDFBookmark_GetAction(FPDF_BOOKMARK bookmark)
-{
-       if (bookmark == NULL) return NULL;
+DLLEXPORT unsigned long STDCALL FPDFBookmark_GetTitle(FPDF_BOOKMARK pDict,
+                                                      void* buffer,
+                                                      unsigned long buflen) {
+  if (!pDict)
+    return 0;
+  CPDF_Bookmark bookmark(ToDictionary(static_cast<CPDF_Object*>(pDict)));
+  CFX_WideString title = bookmark.GetTitle();
+  CFX_ByteString encodedTitle = title.UTF16LE_Encode();
+  unsigned long len = encodedTitle.GetLength();
+  if (buffer && buflen >= len) {
+    FXSYS_memcpy(buffer, encodedTitle.c_str(), len);
+  }
+  return len;
+}
 
-       CPDF_Bookmark Bookmark = (CPDF_Dictionary*)bookmark;
-       return Bookmark.GetAction();
+DLLEXPORT FPDF_BOOKMARK STDCALL FPDFBookmark_Find(FPDF_DOCUMENT document,
+                                                  FPDF_WIDESTRING title) {
+  if (!title || title[0] == 0)
+    return nullptr;
+  CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
+  if (!pDoc)
+    return nullptr;
+  CPDF_BookmarkTree tree(pDoc);
+  FX_STRSIZE len = CFX_WideString::WStringLength(title);
+  CFX_WideString encodedTitle = CFX_WideString::FromUTF16LE(title, len);
+  return FindBookmark(tree, CPDF_Bookmark(), encodedTitle).GetDict();
 }
 
-DLLEXPORT unsigned long STDCALL FPDFAction_GetType(FPDF_ACTION action)
-{
-       if (action == NULL) return 0;
-
-       CPDF_Action Action = (CPDF_Dictionary*)action;
-       CPDF_Action::ActionType type = Action.GetType();
-       switch (type) {
-       case CPDF_Action::GoTo:
-               return PDFACTION_GOTO;
-       case CPDF_Action::GoToR:
-               return PDFACTION_REMOTEGOTO;
-       case CPDF_Action::URI:
-               return PDFACTION_URI;
-       case CPDF_Action::Launch:
-               return PDFACTION_LAUNCH;
-       default:
-               return PDFACTION_UNSUPPORTED;
-       }
-       return PDFACTION_UNSUPPORTED;
+DLLEXPORT FPDF_DEST STDCALL FPDFBookmark_GetDest(FPDF_DOCUMENT document,
+                                                 FPDF_BOOKMARK pDict) {
+  if (!pDict)
+    return nullptr;
+  CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
+  if (!pDoc)
+    return nullptr;
+  CPDF_Bookmark bookmark(ToDictionary(static_cast<CPDF_Object*>(pDict)));
+  CPDF_Dest dest = bookmark.GetDest(pDoc);
+  if (dest)
+    return dest.GetObject();
+  // If this bookmark is not directly associated with a dest, we try to get
+  // action
+  CPDF_Action action = bookmark.GetAction();
+  if (!action)
+    return nullptr;
+  return action.GetDest(pDoc).GetObject();
 }
 
-DLLEXPORT FPDF_DEST STDCALL FPDFAction_GetDest(FPDF_DOCUMENT document, FPDF_ACTION action)
-{
-       if (document == NULL) return NULL;
-       if (action == NULL) return NULL;
-       CPDF_Document* pDoc = (CPDF_Document*)document;
-       CPDF_Action Action = (CPDF_Dictionary*)action;
+DLLEXPORT FPDF_ACTION STDCALL FPDFBookmark_GetAction(FPDF_BOOKMARK pDict) {
+  if (!pDict)
+    return NULL;
+  CPDF_Bookmark bookmark(ToDictionary(static_cast<CPDF_Object*>(pDict)));
+  return bookmark.GetAction().GetDict();
+}
 
-       return Action.GetDest(pDoc);
+DLLEXPORT unsigned long STDCALL FPDFAction_GetType(FPDF_ACTION pDict) {
+  if (!pDict)
+    return PDFACTION_UNSUPPORTED;
+
+  CPDF_Action action(ToDictionary(static_cast<CPDF_Object*>(pDict)));
+  CPDF_Action::ActionType type = action.GetType();
+  switch (type) {
+    case CPDF_Action::GoTo:
+      return PDFACTION_GOTO;
+    case CPDF_Action::GoToR:
+      return PDFACTION_REMOTEGOTO;
+    case CPDF_Action::URI:
+      return PDFACTION_URI;
+    case CPDF_Action::Launch:
+      return PDFACTION_LAUNCH;
+    default:
+      return PDFACTION_UNSUPPORTED;
+  }
 }
 
-DLLEXPORT unsigned long STDCALL FPDFAction_GetURIPath(FPDF_DOCUMENT document, FPDF_ACTION action, 
-                                                                                         void* buffer, unsigned long buflen)
-{
-       if (document == NULL) return 0;
-       if (action == NULL) return 0;
-       CPDF_Document* pDoc = (CPDF_Document*)document;
-       CPDF_Action Action = (CPDF_Dictionary*)action;
-
-       CFX_ByteString path = Action.GetURI(pDoc);
-       unsigned long len = path.GetLength() + 1;
-       if (buffer != NULL && buflen >= len)
-               FXSYS_memcpy(buffer, (FX_LPCSTR)path, len);
-       return len;
+DLLEXPORT FPDF_DEST STDCALL FPDFAction_GetDest(FPDF_DOCUMENT document,
+                                               FPDF_ACTION pDict) {
+  if (!pDict)
+    return nullptr;
+  CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
+  if (!pDoc)
+    return nullptr;
+  CPDF_Action action(ToDictionary(static_cast<CPDF_Object*>(pDict)));
+  return action.GetDest(pDoc).GetObject();
 }
 
-DLLEXPORT unsigned long STDCALL FPDFDest_GetPageIndex(FPDF_DOCUMENT document, FPDF_DEST dest)
-{
-       if (document == NULL) return 0;
-       if (dest == NULL) return 0;
-       CPDF_Document* pDoc = (CPDF_Document*)document;
-       CPDF_Dest Dest = (CPDF_Array*)dest;
+DLLEXPORT unsigned long STDCALL
+FPDFAction_GetFilePath(FPDF_ACTION pDict, void* buffer, unsigned long buflen) {
+  unsigned long type = FPDFAction_GetType(pDict);
+  if (type != PDFACTION_REMOTEGOTO && type != PDFACTION_LAUNCH)
+    return 0;
+
+  CPDF_Action action(ToDictionary(static_cast<CPDF_Object*>(pDict)));
+  CFX_ByteString path = action.GetFilePath().UTF8Encode();
+  unsigned long len = path.GetLength() + 1;
+  if (buffer && buflen >= len)
+    FXSYS_memcpy(buffer, path.c_str(), len);
+  return len;
+}
 
-       return Dest.GetPageIndex(pDoc);
+DLLEXPORT unsigned long STDCALL FPDFAction_GetURIPath(FPDF_DOCUMENT document,
+                                                      FPDF_ACTION pDict,
+                                                      void* buffer,
+                                                      unsigned long buflen) {
+  if (!pDict)
+    return 0;
+  CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
+  if (!pDoc)
+    return 0;
+  CPDF_Action action(ToDictionary(static_cast<CPDF_Object*>(pDict)));
+  CFX_ByteString path = action.GetURI(pDoc);
+  unsigned long len = path.GetLength() + 1;
+  if (buffer && buflen >= len)
+    FXSYS_memcpy(buffer, path.c_str(), len);
+  return len;
 }
 
-static void ReleaseLinkList(FX_LPVOID data)
-{
-       delete (CPDF_LinkList*)data;
+DLLEXPORT unsigned long STDCALL FPDFDest_GetPageIndex(FPDF_DOCUMENT document,
+                                                      FPDF_DEST pDict) {
+  if (!pDict)
+    return 0;
+  CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
+  if (!pDoc)
+    return 0;
+  CPDF_Dest dest(static_cast<CPDF_Array*>(pDict));
+  return dest.GetPageIndex(pDoc);
 }
 
-DLLEXPORT FPDF_LINK STDCALL FPDFLink_GetLinkAtPoint(FPDF_PAGE page, double x, double y)
-{
-       if (page == NULL) return NULL;
-       CPDF_Page* pPage = (CPDF_Page*)page;
+DLLEXPORT FPDF_LINK STDCALL
+FPDFLink_GetLinkAtPoint(FPDF_PAGE page, double x, double y) {
+  CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
+  if (!pPage)
+    return nullptr;
 
-       // Link list is stored with the document
-       CPDF_Document* pDoc = pPage->m_pDocument;
-       CPDF_LinkList* pLinkList = (CPDF_LinkList*)pDoc->GetPrivateData(&this_module);
-       if (pLinkList == NULL) {
-               pLinkList = FX_NEW CPDF_LinkList(pDoc);
-               pDoc->SetPrivateData(&this_module, pLinkList, ReleaseLinkList);
-       }
+  CPDF_LinkList* pLinkList = GetLinkList(pPage);
+  if (!pLinkList)
+    return nullptr;
 
-       return pLinkList->GetLinkAtPoint(pPage, (FX_FLOAT)x, (FX_FLOAT)y);
+  return pLinkList->GetLinkAtPoint(pPage, (FX_FLOAT)x, (FX_FLOAT)y, nullptr)
+      .GetDict();
 }
 
-DLLEXPORT FPDF_DEST STDCALL FPDFLink_GetDest(FPDF_DOCUMENT document, FPDF_LINK link)
-{
-       if (document == NULL) return NULL;
-       CPDF_Document* pDoc = (CPDF_Document*)document;
-       if (link == NULL) return NULL;
-       CPDF_Link Link = (CPDF_Dictionary*)link;
+DLLEXPORT int STDCALL
+FPDFLink_GetLinkZOrderAtPoint(FPDF_PAGE page, double x, double y) {
+  CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
+  if (!pPage)
+    return -1;
 
-       FPDF_DEST dest = Link.GetDest(pDoc);
-       if (dest) return dest;
+  CPDF_LinkList* pLinkList = GetLinkList(pPage);
+  if (!pLinkList)
+    return -1;
 
-       // If this link is not directly associated with a dest, we try to get action
-       CPDF_Action Action = Link.GetAction();
-       if (Action == NULL) return NULL;
-       return Action.GetDest(pDoc);
+  int z_order = -1;
+  pLinkList->GetLinkAtPoint(pPage, (FX_FLOAT)x, (FX_FLOAT)y, &z_order);
+  return z_order;
 }
 
-DLLEXPORT FPDF_ACTION STDCALL FPDFLink_GetAction(FPDF_LINK link)
-{
-       if (link == NULL) return NULL;
-       CPDF_Link Link = (CPDF_Dictionary*)link;
-
-       return Link.GetAction();
+DLLEXPORT FPDF_DEST STDCALL FPDFLink_GetDest(FPDF_DOCUMENT document,
+                                             FPDF_LINK pDict) {
+  if (!pDict)
+    return nullptr;
+  CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
+  if (!pDoc)
+    return nullptr;
+  CPDF_Link link(ToDictionary(static_cast<CPDF_Object*>(pDict)));
+  FPDF_DEST dest = link.GetDest(pDoc).GetObject();
+  if (dest)
+    return dest;
+  // If this link is not directly associated with a dest, we try to get action
+  CPDF_Action action = link.GetAction();
+  if (!action)
+    return nullptr;
+  return action.GetDest(pDoc).GetObject();
 }
 
-DLLEXPORT FPDF_BOOL STDCALL FPDFLink_Enumerate(FPDF_PAGE page, int* startPos, FPDF_LINK* linkAnnot)
-{
-       if(!page || !startPos || !linkAnnot)
-               return FALSE;
-       CPDF_Page* pPage = (CPDF_Page*)page;
-       if(!pPage->m_pFormDict) return FALSE;
-       CPDF_Array* pAnnots = pPage->m_pFormDict->GetArray("Annots");
-       if(!pAnnots) return FALSE;
-       for (int i = *startPos; i < (int)pAnnots->GetCount(); i ++) {
-               CPDF_Dictionary* pDict = (CPDF_Dictionary*)pAnnots->GetElementValue(i);
-               if (pDict == NULL || pDict->GetType() != PDFOBJ_DICTIONARY) continue;
-               if(pDict->GetString(FX_BSTRC("Subtype")).Equal(FX_BSTRC("Link")))
-               {
-                       *startPos = i+1;
-                       *linkAnnot = (FPDF_LINK)pDict; 
-                       return TRUE;
-               }
-       }
-       return FALSE;
-}
+DLLEXPORT FPDF_ACTION STDCALL FPDFLink_GetAction(FPDF_LINK pDict) {
+  if (!pDict)
+    return nullptr;
 
-DLLEXPORT FPDF_BOOL STDCALL FPDFLink_GetAnnotRect(FPDF_LINK linkAnnot, FS_RECTF* rect)
-{
-       if(!linkAnnot || !rect)
-               return FALSE;
-       CPDF_Dictionary* pAnnotDict = (CPDF_Dictionary*)linkAnnot;
-       CPDF_Rect rt = pAnnotDict->GetRect(FX_BSTRC("Rect"));
-       rect->left = rt.left;
-       rect->bottom = rt.bottom;
-       rect->right = rt.right;
-       rect->top = rt.top;
-       return TRUE;
+  CPDF_Link link(ToDictionary(static_cast<CPDF_Object*>(pDict)));
+  return link.GetAction().GetDict();
 }
 
-DLLEXPORT int STDCALL FPDFLink_CountQuadPoints(FPDF_LINK linkAnnot)
-{
-       if(!linkAnnot)
-               return 0;
-       CPDF_Dictionary* pAnnotDict = (CPDF_Dictionary*)linkAnnot;
-       CPDF_Array* pArray = pAnnotDict->GetArray(FX_BSTRC("QuadPoints"));
-       if (pArray == NULL)
-               return 0;
-       else
-               return pArray->GetCount() / 8;
+DLLEXPORT FPDF_BOOL STDCALL FPDFLink_Enumerate(FPDF_PAGE page,
+                                               int* startPos,
+                                               FPDF_LINK* linkAnnot) {
+  if (!startPos || !linkAnnot)
+    return FALSE;
+  CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
+  if (!pPage || !pPage->m_pFormDict)
+    return FALSE;
+  CPDF_Array* pAnnots = pPage->m_pFormDict->GetArray("Annots");
+  if (!pAnnots)
+    return FALSE;
+  for (int i = *startPos; i < (int)pAnnots->GetCount(); i++) {
+    CPDF_Dictionary* pDict =
+        ToDictionary(static_cast<CPDF_Object*>(pAnnots->GetElementValue(i)));
+    if (!pDict)
+      continue;
+    if (pDict->GetString(FX_BSTRC("Subtype")).Equal(FX_BSTRC("Link"))) {
+      *startPos = i + 1;
+      *linkAnnot = (FPDF_LINK)pDict;
+      return TRUE;
+    }
+  }
+  return FALSE;
 }
 
-DLLEXPORT FPDF_BOOL STDCALL FPDFLink_GetQuadPoints(FPDF_LINK linkAnnot, int quadIndex, FS_QUADPOINTSF* quadPoints)
-{
-       if(!linkAnnot || !quadPoints)
-               return FALSE;
-       CPDF_Dictionary* pAnnotDict = (CPDF_Dictionary*)linkAnnot;
-       CPDF_Array* pArray = pAnnotDict->GetArray(FX_BSTRC("QuadPoints"));
-       if (pArray) {
-               if (0 > quadIndex || quadIndex >= (int)pArray->GetCount()/8 ||
-                       ((quadIndex*8+7) >= (int)pArray->GetCount())) return FALSE;
-               quadPoints->x1 = pArray->GetNumber(quadIndex*8);
-               quadPoints->y1 = pArray->GetNumber(quadIndex*8+1);
-               quadPoints->x2 = pArray->GetNumber(quadIndex*8+2);
-               quadPoints->y2 = pArray->GetNumber(quadIndex*8+3);
-               quadPoints->x3 = pArray->GetNumber(quadIndex*8+4);
-               quadPoints->y3 = pArray->GetNumber(quadIndex*8+5);
-               quadPoints->x4 = pArray->GetNumber(quadIndex*8+6);
-               quadPoints->y4 = pArray->GetNumber(quadIndex*8+7);
-               return TRUE;
-       } 
-       return FALSE;
+DLLEXPORT FPDF_BOOL STDCALL FPDFLink_GetAnnotRect(FPDF_LINK linkAnnot,
+                                                  FS_RECTF* rect) {
+  if (!linkAnnot || !rect)
+    return FALSE;
+  CPDF_Dictionary* pAnnotDict =
+      ToDictionary(static_cast<CPDF_Object*>(linkAnnot));
+  CPDF_Rect rt = pAnnotDict->GetRect(FX_BSTRC("Rect"));
+  rect->left = rt.left;
+  rect->bottom = rt.bottom;
+  rect->right = rt.right;
+  rect->top = rt.top;
+  return TRUE;
 }
 
+DLLEXPORT int STDCALL FPDFLink_CountQuadPoints(FPDF_LINK linkAnnot) {
+  if (!linkAnnot)
+    return 0;
+  CPDF_Dictionary* pAnnotDict =
+      ToDictionary(static_cast<CPDF_Object*>(linkAnnot));
+  CPDF_Array* pArray = pAnnotDict->GetArray(FX_BSTRC("QuadPoints"));
+  if (!pArray)
+    return 0;
+  return pArray->GetCount() / 8;
+}
 
-DLLEXPORT unsigned long STDCALL FPDF_GetMetaText(FPDF_DOCUMENT doc, FPDF_BYTESTRING tag,
-                                                                                                void* buffer, unsigned long buflen)
-{
-       if (doc == NULL || tag == NULL) return 0;
-
-       CPDF_Document* pDoc = (CPDF_Document*)doc;
-       // Get info dictionary
-       CPDF_Dictionary* pInfo = pDoc->GetInfo();
-       if (pInfo == NULL) return 0;
-
-       CFX_WideString text = pInfo->GetUnicodeText(tag);
-
-       // Use UTF-16LE encoding
-       CFX_ByteString bstr = text.UTF16LE_Encode();
-       unsigned long len = bstr.GetLength();
-       if (buffer != NULL && buflen >= len+2) {
-               FXSYS_memcpy(buffer, (FX_LPCSTR)bstr, len);
-               // use double zero as trailer
-               ((FX_BYTE*)buffer)[len] = ((FX_BYTE*)buffer)[len+1] = 0;
-       }
-       return len+2;
+DLLEXPORT FPDF_BOOL STDCALL FPDFLink_GetQuadPoints(FPDF_LINK linkAnnot,
+                                                   int quadIndex,
+                                                   FS_QUADPOINTSF* quadPoints) {
+  if (!linkAnnot || !quadPoints)
+    return FALSE;
+  CPDF_Dictionary* pAnnotDict =
+      ToDictionary(static_cast<CPDF_Object*>(linkAnnot));
+  CPDF_Array* pArray = pAnnotDict->GetArray(FX_BSTRC("QuadPoints"));
+  if (pArray) {
+    if (quadIndex < 0 || quadIndex >= (int)pArray->GetCount() / 8 ||
+        ((quadIndex * 8 + 7) >= (int)pArray->GetCount()))
+      return FALSE;
+    quadPoints->x1 = pArray->GetNumber(quadIndex * 8);
+    quadPoints->y1 = pArray->GetNumber(quadIndex * 8 + 1);
+    quadPoints->x2 = pArray->GetNumber(quadIndex * 8 + 2);
+    quadPoints->y2 = pArray->GetNumber(quadIndex * 8 + 3);
+    quadPoints->x3 = pArray->GetNumber(quadIndex * 8 + 4);
+    quadPoints->y3 = pArray->GetNumber(quadIndex * 8 + 5);
+    quadPoints->x4 = pArray->GetNumber(quadIndex * 8 + 6);
+    quadPoints->y4 = pArray->GetNumber(quadIndex * 8 + 7);
+    return TRUE;
+  }
+  return FALSE;
 }
 
+DLLEXPORT unsigned long STDCALL FPDF_GetMetaText(FPDF_DOCUMENT doc,
+                                                 FPDF_BYTESTRING tag,
+                                                 void* buffer,
+                                                 unsigned long buflen) {
+  if (!tag)
+    return 0;
+  CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(doc);
+  if (!pDoc)
+    return 0;
+  CPDF_Dictionary* pInfo = pDoc->GetInfo();
+  if (!pInfo)
+    return 0;
+  CFX_WideString text = pInfo->GetUnicodeText(tag);
+  // Use UTF-16LE encoding
+  CFX_ByteString encodedText = text.UTF16LE_Encode();
+  unsigned long len = encodedText.GetLength();
+  if (buffer && buflen >= len) {
+    FXSYS_memcpy(buffer, encodedText.c_str(), len);
+  }
+  return len;
+}