Add APIs for getting bookmarks and named destinations.

fpdfsdk/src/fpdfdoc.cpp

 // 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 "../include/fsdk_define.h"
 #include "../include/fpdfdoc.h"
 
 static int THISMODULE = 0;
 
 static CPDF_Bookmark FindBookmark(const CPDF_BookmarkTree& tree, CPDF_Bookmark bookmark, const CFX_WideString& title)
 {
         if (bookmark && bookmark.GetTitle().CompareNoCase(title) == 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();
 }
 
+DLLEXPORT FPDF_BOOKMARK STDCALL FPDFBookmark_GetFirstChild(FPDF_DOCUMENT document, FPDF_BOOKMARK pDict)
+{
+    if (!document || !pDict)
+        return NULL;
+    CPDF_Document* pDoc = (CPDF_Document*)document;
+    CPDF_BookmarkTree tree(pDoc);
+    CPDF_Bookmark bookmark = CPDF_Bookmark((CPDF_Dictionary*)pDict);
+    return tree.GetFirstChild(bookmark).GetDict();
+}
+
+DLLEXPORT FPDF_BOOKMARK STDCALL FPDFBookmark_GetNextSibling(FPDF_DOCUMENT document, FPDF_BOOKMARK pDict)
+{
+    if (!document || !pDict)
+        return NULL;
+    CPDF_Document* pDoc = (CPDF_Document*)document;
+    CPDF_BookmarkTree tree(pDoc);
+    CPDF_Bookmark bookmark = CPDF_Bookmark((CPDF_Dictionary*)pDict);
+    return tree.GetNextSibling(bookmark).GetDict();
+}
+
+DLLEXPORT unsigned long STDCALL FPDFBookmark_GetTitle(FPDF_BOOKMARK pDict, void* buffer, unsigned long buflen)
+{
+    if (!pDict)
+        return 0;
+    CPDF_Bookmark bookmark((CPDF_Dictionary*)pDict);
+    CFX_WideString title = bookmark.GetTitle();
+    CFX_ByteString encodedTitle = title.UTF16LE_Encode(FALSE);
+    unsigned long len = encodedTitle.GetLength();
+    if (buffer && buflen >= len + 2) {
+        FXSYS_memcpy(buffer, encodedTitle.c_str(), len);
+        ((FX_BYTE*)buffer)[len] = 0;
+        ((FX_BYTE*)buffer)[len + 1] = 0;
+    }
+    return len + 2;
+}
+
 DLLEXPORT FPDF_BOOKMARK STDCALL FPDFBookmark_Find(FPDF_DOCUMENT document, FPDF_WIDESTRING title)
 {
         if (!document)
                 return NULL;
         if (!title || title[0] == 0)
                 return NULL;
         CPDF_Document* pDoc = (CPDF_Document*)document;
         CPDF_BookmarkTree tree(pDoc);
         FX_STRSIZE len = CFX_WideString::WStringLength(title);
         CFX_WideString encodedTitle = CFX_WideString::FromUTF16LE(title, len);
@@ skipping 217 matching lines @@
         CFX_ByteString encodedText = text.UTF16LE_Encode();
         unsigned long len = encodedText.GetLength();
         if (buffer && buflen >= len + 2) {
                 FXSYS_memcpy(buffer, encodedText.c_str(), len);
                 // use double zero as trailer
                 ((FX_BYTE*)buffer)[len] = 0;
                 ((FX_BYTE*)buffer)[len + 1] = 0;
         }
         return len+2;
 }