public Pdf(string filename)
{
PdfStream st = new PdfStream();
st.FillFromFile(filename);
long pos = st.Position;
ReadHeader(st);
// While we're still advancing through the stream, then all is good...
bool eof = false;
while (!eof && (st.Position != pos))
{
Utility.TraceLine("Starting read pass");
pos = st.Position;
ReadComment(st);
Object obj = ReadObject(st);
if (obj.Valid)
{
m_objects.Add(obj);
if (m_objects.Count == 1)
{
DictionaryItem di = obj.Dictionary.Get("Linearized");
if (di.Valid)
{
if (di.Type == DictionaryItem.ValueType.Number)
{
if (di.ValueAsInteger() == 1)
{
m_linflag = true;
m_linearized = true;
Utility.TraceLine("Linearized PDF document found");
Utility.TraceLine("PDF/A: Linearization of document is ignored (section 5.10)");
}
}
else
{
throw new ParseException("Linearized dictionary item is not a number");
}
}
}
}
ReadXref(st);
if (ReadTrailer(st))
{
if (m_linflag == true)
{
m_linflag = false;
Utility.TraceLine("Linearization trailer");
}
else
{
eof = true;
}
}
ReadStartXref(st);
if (!eof && (st.Position == pos))
{
st.ReadLine();
}
}
if (st.Position != st.Length)
{
m_pdfa = false;
Utility.TraceLine("PDF/A: Extraneous content after EOF marker breaches section 5.3 requirements");
}
}
