iTextSharp.text.pdf.PdfObject.IsStream C# (CSharp) Метод

        public bool IsStream() {
            return (this.type == STREAM);
        }

        /**
         * Translate a PRIndirectReference to a PdfIndirectReference
         * In addition, translates the object numbers, and copies the
         * referenced object to the output file if it wasn't available
         * in the cache yet. If it's in the cache, the reference to
         * the already used stream is returned.
         *
         * NB: PRIndirectReferences (and PRIndirectObjects) really need to know what
         * file they came from, because each file has its own namespace. The translation
         * we do from their namespace to ours is *at best* heuristic, and guaranteed to
         * fail under some circumstances.
         */
        protected override PdfIndirectReference CopyIndirect(PRIndirectReference inp)
        {
            PdfObject srcObj      = PdfReader.GetPdfObjectRelease(inp);
            ByteStore streamKey   = null;
            bool      validStream = false;

            if (srcObj.IsStream())
            {
                streamKey   = new ByteStore((PRStream)srcObj);
                validStream = true;
                PdfIndirectReference streamRef = (PdfIndirectReference)streamMap[streamKey];
                if (streamRef != null)
                {
                    return(streamRef);
                }
            }

            PdfIndirectReference theRef;
            RefKey             key  = new RefKey(inp);
            IndirectReferences iRef = (IndirectReferences)indirects[key];

            if (iRef != null)
            {
                theRef = iRef.Ref;
                if (iRef.Copied)
                {
                    return(theRef);
                }
            }
            else
            {
                theRef         = body.PdfIndirectReference;
                iRef           = new IndirectReferences(theRef);
                indirects[key] = iRef;
            }
            if (srcObj != null && srcObj.IsDictionary())
            {
                PdfObject type = PdfReader.GetPdfObjectRelease(((PdfDictionary)srcObj).Get(PdfName.TYPE));
                if (type != null && PdfName.PAGE.Equals(type))
                {
                    return(theRef);
                }
            }
            iRef.SetCopied();

            if (validStream)
            {
                streamMap[streamKey] = theRef;
            }

            PdfObject obj = CopyObject(srcObj);

            AddToBody(obj, theRef);
            return(theRef);
        }