Added Files

PepLib.Core/IO/DrawingReader.cs

@@ -0,0 +1,113 @@
+using Ionic.Zip;
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.Text.RegularExpressions;
+
+namespace PepLib.IO
+{
+    public sealed class DrawingReader
+    {
+        public Drawing Drawing { get; private set; }
+
+        public DrawingReader()
+        {
+            Drawing = new Drawing();
+        }
+
+        public DrawingReader(Drawing drawing)
+        {
+            Drawing = drawing;
+        }
+
+        public void Read(Stream stream)
+        {
+            var zipStream = new ZipInputStream(stream);
+
+            ZipEntry theEntry;
+
+            while ((theEntry = zipStream.GetNextEntry()) != null)
+            {
+                var size = 2048;
+                var data = new byte[size];
+                var memstream = new MemoryStream();
+
+                while (true)
+                {
+                    size = zipStream.Read(data, 0, data.Length);
+
+                    if (size > 0)
+                    {
+                        memstream.Write(data, 0, size);
+                        memstream.Flush();
+                    }
+                    else break;
+                }
+
+                memstream.Seek(0, SeekOrigin.Begin);
+
+                var extension = Path.GetExtension(theEntry.FileName);
+
+                switch (extension)
+                {
+                    case ".dir":
+                        LoadInfo(memstream);
+                        memstream.Close();
+                        continue;
+                }
+
+                if (Regex.IsMatch(extension, "loop-\\d\\d\\d"))
+                    Drawing.Loops.Add(ReadLoop(theEntry.FileName, memstream));
+
+                memstream.Close();
+            }
+
+            zipStream.Close();
+
+            Drawing.ResolveLoops();
+        }
+
+        public void Read(string nestFile)
+        {
+            if (!File.Exists(nestFile))
+            {
+                var msg = string.Format("File Not Found: {0}", nestFile);
+                throw new FileNotFoundException(msg);
+            }
+
+            Stream stream = null;
+
+            try
+            {
+                stream = new FileStream(nestFile, FileMode.Open);
+                Read(stream);
+            }
+            finally
+            {
+                if (stream != null)
+                    stream.Close();
+            }
+        }
+
+        private void LoadInfo(Stream stream)
+        {
+            try
+            {
+                Drawing.Info = DrawingInfo.Load(stream);
+            }
+            catch (Exception exception)
+            {
+                Debug.WriteLine(exception.Message);
+                Debug.WriteLine(exception.StackTrace);
+            }
+        }
+
+        private Loop ReadLoop(string name, Stream stream)
+        {
+            var reader = new LoopReader();
+            reader.Read(name, stream);
+
+            return reader.Loop;
+        }
+    }
+}