private PdfStream(PdfDictionary dictionary, PdfData data)
: base(PdfObjectType.Stream)
{
IsContainer = true;
StreamDictionary = dictionary;
Data = data;
}
public static PdfStream Parse(PdfDictionary dictionary, Lexer lexer)
{
if (dictionary is null)
{
throw new ArgumentNullException(nameof(dictionary));
}
lexer.Expects("stream");
char eol = lexer.ReadChar();
if (eol == '\r')
{
eol = lexer.ReadChar();
}
if (eol != '\n')
{
throw new ParsingException($@"Stream must end with either \r\n or \n. Was '{eol}'");
}
IPdfObject lengthObject = dictionary["Length"];
if (lengthObject is null)
{
throw new ParsingException("Stream dictionary is missing 'Length' entry");
}
int length = 0;
if (lengthObject is PdfIndirectReference reference)
{
PdfIndirectObject lenobj = lexer.IndirectReferenceResolver
.GetObject(reference.ObjectNumber, reference.GenerationNumber);
length = ((PdfNumeric)lenobj.Object).ToInt32();
}
else
{
length = int.Parse(lengthObject.ToString(), CultureInfo.InvariantCulture);
}
var data = PdfData.Parse(lexer, length);
lexer.Expects("endstream");
return(new PdfStream(dictionary, data));
}
