Initial commit

Initial commit til Git.
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PointOfSale/Pos.EpsonPrinter/EscPosBuilder.cs

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+using System.Text;
+
+namespace EpsonReceiptPrinter;
+
+public sealed class EscPosBuilder
+{
+    private readonly List<byte> _buffer = new();
+    private readonly Encoding _encoding;
+    private PrinterCodePage _codePage;
+
+    public EscPosBuilder(PrinterCodePage codePage = PrinterCodePage.PC865_Nordic, Encoding? encoding = null)
+    {
+        _codePage = codePage;
+        _encoding = encoding ?? EncodingHelper.GetEncodingForCodePage(codePage);
+    }
+
+    public EscPosBuilder Initialize()
+    {
+        _buffer.AddRange(EscPosCommands.Initialize);
+        _buffer.AddRange(EscPosCommands.SelectCodePage(_codePage));
+        return this;
+    }
+
+    public EscPosBuilder SelectCodePage(PrinterCodePage codePage)
+    {
+        _codePage = codePage;
+        _buffer.AddRange(EscPosCommands.SelectCodePage(codePage));
+        return this;
+    }
+
+    public EscPosBuilder AlignLeft()
+    {
+        _buffer.AddRange(EscPosCommands.AlignLeft);
+        return this;
+    }
+
+    public EscPosBuilder AlignCenter()
+    {
+        _buffer.AddRange(EscPosCommands.AlignCenter);
+        return this;
+    }
+
+    public EscPosBuilder AlignRight()
+    {
+        _buffer.AddRange(EscPosCommands.AlignRight);
+        return this;
+    }
+
+    public EscPosBuilder BoldOn()
+    {
+        _buffer.AddRange(EscPosCommands.BoldOn);
+        return this;
+    }
+
+    public EscPosBuilder BoldOff()
+    {
+        _buffer.AddRange(EscPosCommands.BoldOff);
+        return this;
+    }
+
+    public EscPosBuilder UnderlineOn()
+    {
+        _buffer.AddRange(EscPosCommands.UnderlineOn);
+        return this;
+    }
+
+    public EscPosBuilder UnderlineOff()
+    {
+        _buffer.AddRange(EscPosCommands.UnderlineOff);
+        return this;
+    }
+
+    public EscPosBuilder SetTextSize(TextSize size)
+    {
+        _buffer.AddRange(EscPosCommands.TextSize(size));
+        return this;
+    }
+
+    public EscPosBuilder SetTextSize(int widthMultiplier, int heightMultiplier)
+    {
+        _buffer.AddRange(EscPosCommands.TextSize(widthMultiplier, heightMultiplier));
+        return this;
+    }
+
+    public EscPosBuilder Write(string text)
+    {
+        if (!string.IsNullOrEmpty(text))
+        {
+            _buffer.AddRange(_encoding.GetBytes(text));
+        }
+
+        return this;
+    }
+
+    public EscPosBuilder WriteLine(string? text = null)
+    {
+        if (!string.IsNullOrEmpty(text))
+        {
+            _buffer.AddRange(_encoding.GetBytes(text));
+        }
+
+        _buffer.Add(0x0A);
+        return this;
+    }
+
+    public EscPosBuilder Feed(int lines = 1)
+    {
+        _buffer.AddRange(EscPosCommands.Feed(lines));
+        return this;
+    }
+
+    public EscPosBuilder Cut(bool partial = false)
+    {
+        _buffer.AddRange(partial ? EscPosCommands.CutPartial() : EscPosCommands.CutFull());
+        return this;
+    }
+
+    public EscPosBuilder OpenCashDrawer()
+    {
+        _buffer.AddRange(EscPosCommands.OpenCashDrawer());
+        return this;
+    }
+
+    public EscPosBuilder Separator(int width = 42, char character = '-')
+    {
+        return WriteLine(new string(character, width));
+    }
+
+    public EscPosBuilder WriteColumns(string left, string? right, int totalWidth = 42)
+    {
+        left ??= string.Empty;
+        right ??= string.Empty;
+
+        if (left.Length + right.Length >= totalWidth)
+        {
+            WriteLine(left);
+            WriteLine(right.PadLeft(totalWidth));
+            return this;
+        }
+
+        var spaces = totalWidth - left.Length - right.Length;
+        WriteLine(left + new string(' ', spaces) + right);
+        return this;
+    }
+
+    public byte[] Build() => _buffer.ToArray();
+}