pdfviewer: do not submit, uploaded for backup, and will be done actually after I refactor the param…

experimental/PdfViewer/pdfparser/native/SkPdfNativeTokenizer.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkPdfNativeTokenizer.h"
 #include "SkPdfNativeObject.h"
 #include "SkPdfConfig.h"
@@ skipping 793 matching lines @@
 
     return start;
 }
 
 const unsigned char* nextObject(int level, const unsigned char* start, const unsigned char* end, SkPdfNativeObject* token, SkPdfAllocator* allocator, SkPdfNativeDoc* doc GET_TRACK_STREAM) {
     const unsigned char* current;
 
     // skip white spaces
     start = skipPdfWhiteSpaces(level, start, end);
 
+    if (start >= end) {
+        return end;
+    }
+
     current = endOfPdfToken(level, start, end);
 
     // no token, len would be 0
-    if (current == start) {
-        return NULL;
+    if (current == start || current == end) {
+        return end;
     }
 
     int tokenLen = current - start;
 
     if (tokenLen == 1) {
         // start array
         switch (*start) {
             case kOpenedSquareBracket_PdfDelimiter:
                 //*start = '\0';
                 return readArray(level + 1, current, end, token, allocator, doc PUT_TRACK_STREAM_ARGS);
@@ skipping 272 matching lines @@
             SkPdfNativeObject* obj = fAllocator->allocObject();
             fUncompressedStream = nextObject(0, fUncompressedStream, fUncompressedStreamEnd, obj, fAllocator, fDoc PUT_TRACK_STREAM_ARGS_EXPL2(fStreamId, fUncompressedStreamStart));
             // TODO(edisonn): perf maybe we should not expand abreviation like this
             inlineImage->set(inlineImageKeyAbbreviationExpand(key),
                              inlineImageValueAbbreviationExpand(obj));
         }
     }
     // TODO(edisonn): report end of data with inline image without an EI
     return inlineImage;
 }