Added Files

PepLib.Core/IO/LoopReader.cs

@@ -0,0 +1,134 @@
+using System;
+using System.IO;
+using PepLib.Codes;
+
+namespace PepLib.IO
+{
+    internal sealed class LoopReader
+    {
+        public Loop Loop { get; private set; }
+
+        public LoopReader()
+        {
+            Loop = new Loop();
+        }
+
+        public LoopReader(Loop loop)
+        {
+            Loop = loop;
+        }
+
+        public void Read(string name, Stream stream)
+        {
+            var pgm = Program.Load(stream);
+
+            Loop.Name = name;
+            Loop.AddRange(pgm);
+            LoadInfo();
+        }
+
+        private void LoadInfo()
+        {
+            for (int i = Loop.Count - 1; i >= 0; --i)
+            {
+                var code = Loop[i];
+
+                if (code.CodeType() != CodeType.Comment)
+                    continue;
+
+                var comment = (Comment)code;
+
+                if (LoadInfo(comment.Value))
+                    Loop.RemoveAt(i);
+            }
+        }
+
+        private bool LoadInfo(string value)
+        {
+            if (value.StartsWith("REF"))
+            {
+                ParseReferenceData(value);
+                return true;
+            }
+
+            if (value.StartsWith("DRAWING"))
+            {
+                ParseDrawingData(value);
+                return true;
+            }
+
+            if (value.StartsWith("DXF"))
+            {
+                ParseDxfData(value);
+                return true;
+            }
+
+            return false;
+        }
+
+        private void ParseReferenceData(string data)
+        {
+            var parts = data.Split(',');
+
+            if (parts.Length != 3)
+                return;
+
+            int xindex = parts[0].IndexOf('X');
+            parts[0] = parts[0].Remove(0, xindex);
+
+            double x = 0;
+            double y = 0;
+
+            var xsplit = parts[0].Split('=');
+
+            if (xsplit.Length == 2)
+                x = ReadDouble(xsplit[1]);
+
+            var ysplit = parts[1].Split('=');
+
+            if (ysplit.Length == 2)
+                y = ReadDouble(ysplit[1]);
+
+            var datesplit = parts[2].Split('=');
+
+            if (datesplit.Length == 2)
+            {
+                DateTime date;
+                DateTime.TryParse(datesplit[1], out date);
+                Loop.LastReferenceDate = date;
+            }
+
+            Loop.ReferencePoint = new Vector(x, y);
+        }
+
+        private void ParseDrawingData(string data)
+        {
+            var index = data.IndexOf('=');
+
+            if (index == -1)
+                Loop.DrawingName = string.Empty;
+
+            Loop.DrawingName = data.Remove(0, index + 1).Trim();
+        }
+
+        private void ParseDxfData(string data)
+        {
+            var index = data.IndexOf('=');
+
+            if (index == -1)
+                Loop.DxfPath = string.Empty;
+
+            Loop.DxfPath = data.Remove(0, index + 1).Trim();
+        }
+
+        private static double ReadDouble(string s, double defaultValue = 0.0)
+        {
+            double f;
+
+            if (!double.TryParse(s, out f))
+                return defaultValue;
+
+            return f;
+        }
+    }
+}