private void Init()
{
ReadXrefPosition();
ReadXrefHeaders();
ReadXref();
gObjectReader = new PdfObjectReader(gpsr, gXref);
gTrailer = gObjectReader.ReadTrailer(gTrailerPosition);
}
public IPdfObject ReadObject(int id)
{
// trailer
// <<
// /Size 5274
// /Root 5273 0 R
// /Info 5272 0 R
// >>
// 5273 0 obj
// <<
// /Type /Catalog
// /Pages 1 0 R
// /OpenAction [3 0 R /FitH null]
// /PageLayout /OneColumn
// >>
// endobj
// 3 0 obj
// <</Type /Page
// /Parent 1 0 R
// /MediaBox [0 0 907.09 1292.59]
// /Resources 2 0 R
// /Contents 4 0 R>>
// endobj
if (!gXref.ContainsKey(id))
{
throw new PBException("error unknow object {0}", id);
}
PdfXref xref = gXref[id];
gpsr.StartReadObject(string.Format("object {0}", id));
gpsr.Seek(xref.filePosition);
// 5273 0 obj
Regex rg_object_begin = new Regex("^([0-9]+) ([0-9]+) obj$", RegexOptions.Compiled);
PdfObjectDictionary o = new PdfObjectDictionary(id, xref.generationNumber);
string s = gpsr.ReadLine();
Match match = rg_object_begin.Match(s);
if (!match.Success || int.Parse(match.Groups[1].Value) != id || int.Parse(match.Groups[2].Value) != xref.generationNumber)
{
throw new PBException("error reading {0} line {1} \"{2}\"", gpsr.ObjectName, gpsr.LineNumber, s);
}
s = gpsr.ReadLine();
o.value = ReadPdfValue(ref s);
if (s == "")
{
s = gpsr.ReadLine();
}
if (s == "stream")
{
int length = 0;
PdfNValue lengthValue = null;
if (o.value.isObject())
{
lengthValue = o.value["Length"];
}
if (lengthValue == null)
{
throw new PBException("error stream without /Length reading {0} line {1} \"{2}\"", gpsr.ObjectName, gpsr.LineNumber, s);
}
if (lengthValue.value.isInt())
{
length = lengthValue.value.valueInt;
}
else if (lengthValue.value.isObjectRef())
{
long position = gpsr.Position;
PdfObjectReader or = new PdfObjectReader(this);
IPdfObject lengthObject = or.ReadObject(lengthValue.value.valueObjectId);
gpsr.Seek(position);
if (lengthObject.value.isInt())
{
length = lengthObject.value.valueInt;
}
}
if (length != 0)
{
o.stream = gpsr.ReadStream(length);
}
else
{
o.stream = gpsr.ReadStream();
}
s = gpsr.ReadLine();
}
if (s != "endobj")
{
throw new PBException("error endobj not found reading {0} line {1} \"{2}\"", gpsr.ObjectName, gpsr.LineNumber, s);
}
o.source = gpsr.GetObjectSource();
return(o);
}
public PdfObjectReader(PdfObjectReader or)
{
gpsr = new PdfStreamReader(or.gpsr);
gXref = or.gXref;
}
public IPdfObject ReadObject(int id)
{
// trailer
// <<
// /Size 5274
// /Root 5273 0 R
// /Info 5272 0 R
// >>
// 5273 0 obj
// <<
// /Type /Catalog
// /Pages 1 0 R
// /OpenAction [3 0 R /FitH null]
// /PageLayout /OneColumn
// >>
// endobj
// 3 0 obj
// <</Type /Page
// /Parent 1 0 R
// /MediaBox [0 0 907.09 1292.59]
// /Resources 2 0 R
// /Contents 4 0 R>>
// endobj
if (!gXref.ContainsKey(id)) throw new PBException("error unknow object {0}", id);
PdfXref xref = gXref[id];
gpsr.StartReadObject(string.Format("object {0}", id));
gpsr.Seek(xref.filePosition);
// 5273 0 obj
Regex rg_object_begin = new Regex("^([0-9]+) ([0-9]+) obj$", RegexOptions.Compiled);
PdfObjectDictionary o = new PdfObjectDictionary(id, xref.generationNumber);
string s = gpsr.ReadLine();
Match match = rg_object_begin.Match(s);
if (!match.Success || int.Parse(match.Groups[1].Value) != id || int.Parse(match.Groups[2].Value) != xref.generationNumber)
throw new PBException("error reading {0} line {1} \"{2}\"", gpsr.ObjectName, gpsr.LineNumber, s);
s = gpsr.ReadLine();
o.value = ReadPdfValue(ref s);
if (s == "")
s = gpsr.ReadLine();
if (s == "stream")
{
int length = 0;
PdfNValue lengthValue = null;
if (o.value.isObject())
lengthValue = o.value["Length"];
if (lengthValue == null) throw new PBException("error stream without /Length reading {0} line {1} \"{2}\"", gpsr.ObjectName, gpsr.LineNumber, s);
if (lengthValue.value.isInt())
length = lengthValue.value.valueInt;
else if (lengthValue.value.isObjectRef())
{
long position = gpsr.Position;
PdfObjectReader or = new PdfObjectReader(this);
IPdfObject lengthObject = or.ReadObject(lengthValue.value.valueObjectId);
gpsr.Seek(position);
if (lengthObject.value.isInt())
length = lengthObject.value.valueInt;
}
if (length != 0)
o.stream = gpsr.ReadStream(length);
else
o.stream = gpsr.ReadStream();
s = gpsr.ReadLine();
}
if (s != "endobj") throw new PBException("error endobj not found reading {0} line {1} \"{2}\"", gpsr.ObjectName, gpsr.LineNumber, s);
o.source = gpsr.GetObjectSource();
return o;
}
public PdfObjectReader(PdfObjectReader or)
{
gpsr = new PdfStreamReader(or.gpsr);
gXref = or.gXref;
}
private void Init()
{
ReadXrefPosition();
ReadXrefHeaders();
ReadXref();
gObjectReader = new PdfObjectReader(gpsr, gXref);
gTrailer = gObjectReader.ReadTrailer(gTrailerPosition);
}
public PdfInstructionInilineImage ReadInlineImage()
{
PdfInstructionInilineImage instruction = new PdfInstructionInilineImage();
PdfObjectReader por = new PdfObjectReader(new PdfStreamReader(gr));
PdfValueObject prm = new PdfValueObject();
while (true)
{
string s = gr.ReadLine();
if (s == null) throw new PBException("error reading inline image ID not found");
if (s == "ID") break;
PdfNValue value = por.ReadPdfNValue(ref s);
prm[value.name] = value;
if (s != "") throw new PBException("error reading inline image wrong parameter \"{0}\"", s);
}
instruction.prm = prm;
instruction.stream = gr.ReadBytesUntil("\nEI\n");
return instruction;
}
