private long findXref()
{
long startxref = _lexer.FindLastSubstring("startxref");
if (startxref < 0)
{
throw new InvalidDocumentException();
}
_lexer.Position = startxref + 9;
bool succes;
startxref = _lexer.ReadInteger(out succes);
if (!succes || startxref < 0)
{
return(0);
}
return(startxref);
}
private void parseGenerationEntry(Entry entry)
{
PDFDictionaryStream dictStream = GetObject(entry.Offset) as PDFDictionaryStream;
if (dictStream != null)
{
PDFNumber n = dictStream.Dictionary["N"] as PDFNumber;
if (n == null)
{
return;
}
int count = (int)n.GetValue();
if (count <= 0)
{
return;
}
n = dictStream.Dictionary["First"] as PDFNumber;
if (n == null)
{
return;
}
int first = (int)n.GetValue();
if (first < 0)
{
return;
}
dictStream.Decode();
List <int> objects = new List <int>();
List <int> offsets = new List <int>();
Lexer lexer = new Lexer(dictStream.GetStream(), this, null, 512);
lexer.Position = 0;
for (int i = 0; i < count; ++i)
{
bool succes;
int objNo = lexer.ReadInteger(out succes);
if (!succes)
{
break;
}
int offset = lexer.ReadInteger(out succes);
if (!succes)
{
break;
}
objects.Add(objNo);
offsets.Add(offset);
}
int l = objects.Count;
for (int i = 0; i < l; ++i)
{
lexer.Position = offsets[i] + first;
IPDFObject obj = lexer.ReadObject();
if (obj == null)
{
obj = new PDFNull();
}
int index = objects[i];
if (index >= 0 && index < _entries.Count)
{
if (_entries[index] == null)
{
_entries[index] = new Entry(0, 0);
}
if (entry.Offset == _entries[index].Offset)
{
_entries[index].Object = obj;
}
}
}
}
}
