internal CorePDFDirect ReadDirectFromStream(PDFParser p, long offset, int id, int gene)
{
PDFInteger integer1;
PDFInteger integer2;
PDFName name1;
CorePDFDirect direct1;
long num1;
CorePDFDirect direct2;
p.Stream.Position = offset;
try
{
integer1 = ((PDFInteger)p.ReadNextObject());
if ((integer1.Value != ((long)id)) && (id != -1))
{
throw new PDFSyntaxException("XREF points to incorrect object. objId doesn\'t match");
}
integer2 = ((PDFInteger)p.ReadNextObject());
if ((integer2.Value != ((long)gene)) && (gene != -1))
{
throw new PDFSyntaxException("XREF points to incorrect object. Generation number doesn\'t match");
}
name1 = ((PDFName)p.ReadNextObject());
if (name1.Value != "obj")
{
throw new PDFSyntaxException("XREF points to incorrect object. \'obj\' token missing");
}
direct1 = ((CorePDFDirect)p.ReadNextObject());
name1 = ((PDFName)p.ReadNextObject());
if (name1.Value == "stream")
{
p.SkipToEOL();
num1 = p.Stream.Position;
direct1 = new CorePDFStream(this, p.Stream, num1, ((CorePDFDict)direct1));
name1 = ((PDFName)p.ReadNextObject());
if (name1.Value != "endstream")
{
throw new PDFSyntaxException("XREF points to incorrect object. \'endstream\' token missing");
}
name1 = ((PDFName)p.ReadNextObject());
}
if (base.IsEncrypted)
{
this.DecryptObject(direct1, id, gene);
}
if (name1.Value == "endobj")
{
return(direct1);
}
throw new PDFSyntaxException("XREF points to incorrect object. \'endobj\' or \'stream\' token missing");
}
catch (InvalidCastException)
{
throw new PDFSyntaxException("XREF points to incorrect object");
}
return(direct2);
}
internal CorePDFDirect ReadDirect(int id)
{
CorePDFDirect direct1;
PDFStream stream1;
PDFName name1;
int num4;
if (!this.mXRefValid)
{
return(CorePDFNull.Instance);
}
if (id > this.mXRef.Count)
{
return(CorePDFNull.Instance);
}
XRefEntry entry1 = ((XRefEntry)this.mXRef[id]);
int num5 = entry1.type;
switch (num5)
{
case 0:
{
goto Label_0054;
}
case 1:
{
if (entry1.offset == ((long)-1))
{
return(CorePDFNull.Instance);
}
goto Label_006A;
}
case 2:
{
stream1 = (this.Indirects[((int)entry1.offset)].Direct as PDFStream);
if (stream1 == null)
{
return(CorePDFNull.Instance);
}
goto Label_00D0;
}
}
goto Label_0218;
Label_0054:
return(CorePDFNull.Instance);
Label_006A:
direct1 = null;
long num1 = this.mParser.Stream.Position;
direct1 = this.ReadDirectFromStream(this.mParser, entry1.offset, id, entry1.generation);
this.mParser.Stream.Position = num1;
return(direct1);
Label_00D0:
name1 = (stream1.Dict["Type"] as PDFName);
if (name1 == null)
{
throw new PDFException("Invalid Object Stream");
}
if (name1.Value != "ObjStm")
{
throw new PDFException("Invalid object stream");
}
long num2 = ((long)0);
PDFInteger integer1 = (stream1.Dict["First"] as PDFInteger);
if (integer1 == null)
{
throw new PDFException("Invalid Object stream");
}
long num3 = integer1.Value;
PDFInteger integer2 = (stream1.Dict["N"] as PDFInteger);
if (integer2 == null)
{
throw new PDFException("Invalid Object stream");
}
bool flag1 = false;
Stream stream2 = stream1.Decode();
PDFParser parser1 = new PDFParser(stream2, this);
for (num4 = 0; (num4 < integer2.Int32Value); num4 += 1)
{
integer1 = (parser1.ReadNextObject() as PDFInteger);
if (integer1 == null)
{
throw new PDFException("Invalid object stream");
}
if (integer1.Value != ((long)id))
{
parser1.ReadNextObject();
}
else
{
integer1 = (parser1.ReadNextObject() as PDFInteger);
if (integer1 == null)
{
throw new PDFException("Invalid object stream");
}
num2 = (num3 + integer1.Value);
flag1 = true;
break;
}
}
if (!flag1)
{
return(CorePDFNull.Instance);
}
stream2.Position = num2;
return((CorePDFDirect)parser1.ReadNextObject());
Label_0218:
throw new PDFException("Invalid object type");
}