public ObjectToken WriteObject(Stream stream, IToken token, int?reservedNumber = null)
{
int number;
if (reservedNumber.HasValue)
{
if (!reservedNumbers.Remove(reservedNumber.Value))
{
throw new InvalidOperationException();
}
number = reservedNumber.Value;
}
else
{
number = CurrentNumber++;
}
var reference = new IndirectReference(number, 0);
var obj = new ObjectToken(stream.Position, reference, token);
objectOffsets.Add(reference, obj.Position);
TokenWriter.WriteToken(obj, stream);
return(obj);
}
public override IndirectReferenceToken WriteToken(IToken token)
{
if (!Initialized)
{
InitializePdf(DefaultVersion);
}
ms.SetLength(0);
TokenWriter.WriteToken(token, ms);
var contents = ms.ToArray();
if (AttemptDeduplication && hashes.TryGetValue(contents, out var value))
{
return(value);
}
var ir = ReserveObjectNumber();
if (AttemptDeduplication)
{
hashes.Add(contents, ir);
}
offsets.Add(ir.Data, Stream.Position);
TokenWriter.WriteObject(ir.Data.ObjectNumber, ir.Data.Generation, contents, Stream);
return(ir);
}
public ObjectToken WriteObject(Stream stream, IToken token)
{
var reference = new IndirectReference(CurrentNumber++, 0);
var obj = new ObjectToken(stream.Position, reference, token);
objectOffsets.Add(reference, obj.Position);
TokenWriter.WriteToken(obj, stream);
return(obj);
}
private static ObjectToken WriteObject(IToken content, Stream stream, Dictionary <IndirectReference, long> objectOffsets, ref int number)
{
var reference = new IndirectReference(number++, 0);
var obj = new ObjectToken(stream.Position, reference, content);
objectOffsets.Add(reference, obj.Position);
// TODO: write
TokenWriter.WriteToken(obj, stream);
return(obj);
}
public virtual IndirectReferenceToken WriteToken(IToken token, IndirectReferenceToken indirectReference)
{
if (!Initialized)
{
InitializePdf(DefaultVersion);
}
offsets.Add(indirectReference.Data, Stream.Position);
var obj = new ObjectToken(Stream.Position, indirectReference.Data, token);
TokenWriter.WriteToken(obj, Stream);
return(indirectReference);
}
public virtual IndirectReferenceToken WriteToken(IToken token)
{
if (!Initialized)
{
InitializePdf(DefaultVersion);
}
var ir = ReserveObjectNumber();
offsets.Add(ir.Data, Stream.Position);
var obj = new ObjectToken(Stream.Position, ir.Data, token);
TokenWriter.WriteToken(obj, Stream);
return(ir);
}
public override IndirectReferenceToken WriteToken(IToken token, IndirectReferenceToken indirectReference)
{
if (!Initialized)
{
InitializePdf(DefaultVersion);
}
ms.SetLength(0);
TokenWriter.WriteToken(token, ms);
var contents = ms.ToArray();
hashes.Add(contents, indirectReference);
offsets.Add(indirectReference.Data, Stream.Position);
TokenWriter.WriteObject(indirectReference.Data.ObjectNumber, indirectReference.Data.Generation, contents, Stream);
return(indirectReference);
}
public void Flush(decimal version, IndirectReferenceToken catalogReference)
{
if (catalogReference == null)
{
throw new ArgumentNullException(nameof(catalogReference));
}
WriteString($"%PDF-{version:0.0}", Stream);
Stream.WriteText("%");
Stream.WriteByte(169);
Stream.WriteByte(205);
Stream.WriteByte(196);
Stream.WriteByte(210);
Stream.WriteNewLine();
var offsets = new Dictionary <IndirectReference, long>();
ObjectToken catalogToken = null;
foreach (var pair in tokenReferences)
{
var referenceToken = pair.Key;
var token = pair.Value;
var offset = Stream.Position;
var obj = new ObjectToken(offset, referenceToken.Data, token);
TokenWriter.WriteToken(obj, Stream);
offsets.Add(referenceToken.Data, offset);
if (catalogToken == null && referenceToken == catalogReference)
{
catalogToken = obj;
}
}
if (catalogToken == null)
{
throw new Exception("Catalog object wasn't found");
}
// TODO: Support document information
TokenWriter.WriteCrossReferenceTable(offsets, catalogToken, Stream, null);
}
