PDFPatcher/App/Model/PdfStructInfo.cs

using System;
using System.Collections.Generic;
using System.Text;
using System.Xml;
namespace PDFPatcher.Model
{
	struct PdfStructInfo
	{
		static Dictionary<string, PdfStructInfo> _Info = InitStructInfo ();
		string _Name;
		bool _IsKeyObject;
		bool _IsRequired;
		string _Description;
		string _ImageKey;

		public string Name { get { return _Name; } }
		public bool IsKeyObject { get { return _IsKeyObject; } }
		public bool IsRequired { get { return _IsRequired; } }
		public string Description { get { return _Description; } }
		public string ImageKey { get { return _ImageKey; } }

		public PdfStructInfo (string name, bool isKeyObject) : this (name, isKeyObject, false, null, null) {
		}
		public PdfStructInfo (string name, bool isKeyObject, bool isRequired, string description, string imageKey) {
			_Name = name;
			_IsKeyObject = isKeyObject;
			_IsRequired = isRequired;
			_Description = description;
			_ImageKey = imageKey;
		}
		internal static PdfStructInfo GetInfo (string context, string name) {
			PdfStructInfo i;
			if (_Info.TryGetValue (String.Concat (context, "/", name), out i)) {
				return i;
			}
			else {
				_Info.TryGetValue (name, out i);
				return i;
			}
		}

		static Dictionary<string, PdfStructInfo> InitStructInfo () {
			var d = new Dictionary<string, PdfStructInfo> ();
			using (System.IO.Stream s = System.Reflection.Assembly.GetExecutingAssembly ().GetManifestResourceStream ("PDFPatcher.Model.PDFStructInfo.xml")) {
				var doc = new XmlDocument ();
				doc.Load (s);
				AddSubItems (d, doc.SelectSingleNode ("PDF/Global") as XmlElement);
				AddSubItems (d, doc.SelectSingleNode ("PDF") as XmlElement);
			}
			return d;
		}

		private static void AddSubItems (Dictionary<string, PdfStructInfo> d, XmlElement element) {
			if (element.HasChildNodes == false) {
				return;
			}
			var currentToken = element.GetAttribute ("Token");
			foreach (XmlNode item in element.ChildNodes) {
				var e = item as XmlElement;
				if (e == null) {
					continue;
				}
				var t = e.GetAttribute ("Token");
				if (String.IsNullOrEmpty (t)) {
					continue;
				}
				if (e.Name == "Info") {
					AddItem (d, String.IsNullOrEmpty (currentToken) ? t : String.Concat (currentToken, "/", t), new PdfStructInfo (e.GetAttribute ("Name"), e.HasChildNodes, e.GetAttribute ("Required") == "true", e.GetAttribute ("Description"), e.GetAttribute ("ImageKey")));
					AddSubItems (d, e);
				}
				else if (e.Name == "RefInfo" && d.ContainsKey (t)) {
					AddItem (d, String.IsNullOrEmpty (currentToken) ? t : String.Concat (currentToken, "/", t), d[t]);
				}
			}
		}

		private static void AddItem (Dictionary<string, PdfStructInfo> d, string key, PdfStructInfo item) {
			if (d.ContainsKey (key)) {
				System.Diagnostics.Debug.WriteLine ("已添加 " + key);
				return;
			}
			d.Add (key, item);
		}

	}
}