pdfxrefentry.cs

PDF文件格式解析库源代码

using System;
using System.Collections.Generic;
using System.Text;

namespace AnotherPDFLib
{
    public abstract class PdfXrefEntry
    {
        public UInt32 ObjectNumber;
        public abstract UInt32 FirstComponent { get;}
        public abstract UInt16 SecondComponent { get;}
        public abstract char TypeChar { get;}

        public static string EOLMarker;
        static PdfXrefEntry()
        {
            string eol = Environment.NewLine;
            switch (eol.Length)
            {
                case 1:
                    EOLMarker = " " + eol;
                    break;
                case 2:
                    EOLMarker = eol;
                    break;
                default:
                    EOLMarker = "\r\n";
                    break;
            }
        }

        public void Output(PdfWriter writer)
        {
            writer.Write(FirstComponent.ToString("D10"));
            writer.Write(" ");
            writer.Write(SecondComponent.ToString("D5"));
            writer.Write(" ");
            writer.Write(TypeChar);
            writer.Write(EOLMarker);
        }
    }
}