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if PdfObjList.Count is 0 #3

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11 changes: 8 additions & 3 deletions PdfPageCount.pas
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Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,7 @@
*******************************************************************************)

////////////////////////////////////////////////////////////////////////////////
// Summary of steps taken to parse a PDF doc for its page count :- �
// Summary of steps taken to parse a PDF doc for its page count :-  
////////////////////////////////////////////////////////////////////////////////
//1. See if there's a 'Linearization dictionary' for easy parsing.
// Mostly there isn't so ...
Expand Down Expand Up @@ -39,6 +39,7 @@ interface
PDF_ERROR_FILE_OPEN = -2;
PDF_ERROR_FILE_FORMAT = -3;
PDF_ERROR_ENCRYPTED_STRM = -4;
PDF_ERROR_NO_INDEX = -5;

(*******************************************************************************
* GetPageCount *
Expand Down Expand Up @@ -902,6 +903,7 @@ function TPdfPageCounter.GetPageNumUsingCrossRefStream: integer;
//if the Index array is empty then use the default values ...
if length(indexArray) = 0 then
begin
Result := PDF_ERROR_NO_INDEX;
setLength(indexArray, 2);
indexArray[0] := 0;
indexArray[1] := bufferSize div (w1 + w2 + w3);
Expand Down Expand Up @@ -950,7 +952,8 @@ function TPdfPageCounter.GetPageNumUsingCrossRefStream: integer;

DisposeBuffer;

QuickSortList(PdfObjList.List, 0, PdfObjList.Count -1, ListSort);
if PdfObjList.Count > 1 then
QuickSortList(PdfObjList.List, 0, PdfObjList.Count -1, ListSort);
if not GotoObject(rootNum) then exit;
if not FindStrInDict('/Pages') then exit;
//get the Pages' object number, go to it and get the page count ...
Expand Down Expand Up @@ -1057,7 +1060,8 @@ function TPdfPageCounter.GetPdfPageCount(stream: TStream): integer;
//Make sure we've got Root's object number ...
if rootNum = $FFFFFFFF then exit;

QuickSortList(PdfObjList.List, 0, PdfObjList.Count -1, ListSort);
if PdfObjList.Count > 1 then
QuickSortList(PdfObjList.List, 0, PdfObjList.Count -1, ListSort);
if not GotoObject(rootNum) then exit;

if not FindStrInDict('/Pages') then exit;
Expand Down Expand Up @@ -1122,3 +1126,4 @@ function GetPageCount(const filename: string): integer;
//------------------------------------------------------------------------------

end.