1 files changed, 114 insertions, 0 deletions

diff --git a/UVtools.Core/Gerber/Macro.cs b/UVtools.Core/Gerber/Macro.cs
new file mode 100644
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+++ b/UVtools.Core/Gerber/Macro.cs
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+/*
+ *                     GNU AFFERO GENERAL PUBLIC LICENSE
+ *                       Version 3, 19 November 2007
+ *  Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ *  Everyone is permitted to copy and distribute verbatim copies
+ *  of this license document, but changing it is not allowed.
+ */
+
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Text.RegularExpressions;
+using UVtools.Core.Gerber.Primitives;
+
+namespace UVtools.Core.Gerber;
+
+public class Macro : IReadOnlyList<Primitive>
+{
+    #region Properties
+
+    /// <summary>
+    /// Gets the macro name
+    /// </summary>
+    public string Name { get; set; } = string.Empty;
+
+    public List<Primitive> Primitives { get; } = new();
+    #endregion
+
+    public Macro() { }
+
+    public Macro(string name)
+    {
+        Name = name;
+    }
+
+    public void ParsePrimitive(string line)
+    {
+        line = line.TrimEnd('%', '*');
+
+        // 0 Comment: A comment string
+        if (line[0] == '0')
+        {
+            if(line.Length > 2) Primitives.Add(new CommentPrimitive(line[2..]));
+            return;
+        }
+
+        var commaSplit = line.Split(',', StringSplitOptions.TrimEntries | StringSplitOptions.RemoveEmptyEntries);
+        if(!byte.TryParse(commaSplit[0], out var code)) return;
+        switch (code)
+        {
+            // 1 Circle: Exposure, Diameter, Center X, Center Y[, Rotation]
+            case CirclePrimitive.Code:
+            {
+                var primitive = new CirclePrimitive(commaSplit[1], commaSplit[2], commaSplit[3], commaSplit[4]);
+                if (commaSplit.Length > 5) primitive.RotationExpression = commaSplit[5];
+                Primitives.Add(primitive);
+                break;
+            }
+            // 20 Vector Line: Exposure, Width, Start X, Start Y, End X, End Y, Rotation
+            case VectorLinePrimitive.Code:
+            {
+                var primitive = new VectorLinePrimitive(commaSplit[1], commaSplit[2], commaSplit[3], commaSplit[4], commaSplit[5], commaSplit[6]);
+                if (commaSplit.Length > 7) primitive.RotationExpression = commaSplit[7];
+                Primitives.Add(primitive);
+                break;
+            }
+            // 21 Center Line: Exposure, Width, Hight, Center X, Center Y, Rotation
+            case CenterLinePrimitive.Code:
+            {
+                var primitive = new CenterLinePrimitive(commaSplit[1], commaSplit[2], commaSplit[3], commaSplit[4], commaSplit[5]);
+                if (commaSplit.Length > 6) primitive.RotationExpression = commaSplit[6];
+                Primitives.Add(primitive);
+                break;
+            }
+            // 4 Outline: Exposure, # vertices, Start X, Start Y, Subsequent points..., Rotation
+            case OutlinePrimitive.Code:
+            {
+                Primitives.Add(new OutlinePrimitive(commaSplit[1], commaSplit[3..^1], commaSplit[^1]));
+                break;
+            }
+            // 5 Outline: Exposure, # vertices, Start X, Start Y, Subsequent points..., Rotation
+            case PolygonPrimitive.Code:
+            {
+                var primitive = new PolygonPrimitive(commaSplit[1], commaSplit[2], commaSplit[3], commaSplit[4], commaSplit[5]);
+                if (commaSplit.Length > 6) primitive.RotationExpression = commaSplit[6];
+                Primitives.Add(primitive);
+                break;
+            }
+        }
+    }
+
+
+    public static Macro? Parse(string line)
+    {
+        var match = Regex.Match(line, @"\%AM(\S+)\*");
+        if (!match.Success || match.Groups.Count < 2) return null;
+
+        return new Macro(match.Groups[1].Value);
+    }
+
+    public IEnumerator<Primitive> GetEnumerator()
+    {
+        return Primitives.GetEnumerator();
+    }
+
+    IEnumerator IEnumerable.GetEnumerator()
+    {
+        return ((IEnumerable) Primitives).GetEnumerator();
+    }
+
+    public int Count => Primitives.Count;
+
+    public Primitive this[int index] => Primitives[index];
+}
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