Pipeline

5 files changed, 720 insertions, 717 deletions

diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 578c205..01259db 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -59,7 +59,7 @@ jobs:
     - name: Build

       env:

         SC_OPS: ${{ matrix.sc == 'self-contained' && '--self-contained true -p:PublishTrimmed=False' || '--no-self-contained' }}

-      run: dotnet publish ${{ env.PROJECT_PATH }} -c ${{ env.CONFIGURATION }} -r ${{ matrix.os }}-${{ matrix.arch }} -p:PublishSingleFile=true ${{ env.SC_OPS }} -o ${{ env.OUTPUT_DIR }}/${{ env.OUTPUT_SUBDIR }}/${{ env.APP_NAME }} -p:IncludeAllContentForSelfExtract=true

+      run: dotnet publish ${{ env.PROJECT_PATH }} -c ${{ env.CONFIGURATION }} -r ${{ matrix.os }}-${{ matrix.arch }} ${{ env.SC_OPS }} -o ${{ env.OUTPUT_DIR }}/${{ env.OUTPUT_SUBDIR }}/${{ env.APP_NAME }}

     - name: Archive

       working-directory: ${{ env.OUTPUT_DIR }}/${{ env.OUTPUT_SUBDIR }}

       env:

@@ -76,9 +76,9 @@ jobs:
         TAG_REF_NAME: ${{ github.ref }}

         REPOSITORY_NAME: ${{ github.repository }}

       run: |

-        echo ::set-output name=file_name::${REPOSITORY_NAME##*/}-${TAG_REF_NAME##*/v}

+        echo file_name=${REPOSITORY_NAME##*/}-${TAG_REF_NAME##*/v} >> $GITHUB_OUTPUT

         value=`cat release_url/release_url.txt`

-        echo ::set-output name=upload_url::$value

+        echo name=upload_url=$value >> $GITHUB_OUTPUT

     - name: Upload

       uses: actions/upload-release-asset@v1

       env:

diff --git a/NesTiler/CmdArgs.cs b/NesTiler/CmdArgs.cs
index fc1d398..98411f9 100644
--- a/NesTiler/CmdArgs.cs
+++ b/NesTiler/CmdArgs.cs
@@ -1,243 +1,243 @@
-namespace com.clusterrr.Famicom.NesTiler
-{
-    interface IArg
-    {
-        public string Short { get; }
-        public string Long { get; }
-        public string? Params { get; }
-        public string Description { get; }
-        public bool HasIndex { get; }
-
-        public static IArg[] Args = new IArg[]
-        {
-            new ArgIn(),
-            new ArgColors(),
-            new ArgMode(),
-            new ArgBgColor(),
-            new ArgEnablePalettes(),
-            new ArgPalette(),
-            new ArgPatternOffset(),
-            new ArgAttributeTableYOffset(),
-            new ArgSharePatternTable(),
-            new ArgLossy(),
-            new ArgOutPreview(),
-            new ArgOutPalette(),
-            new ArgOutPatternTable(),
-            new ArgOutNameTable(),
-            new ArgOutAttributeTable(),
-            new ArgOutTilesCsv(),
-            new ArgOutPalettesCsv(),
-            new ArgOutColorsTable(),
-            new ArgQuiet()
-        };
-    }
-
-    class ArgIn : IArg
-    {
-        public const string S = "i";
-        public const string L = "in";
-        public string? Params { get; } = "<filename>[:offset[:height]]";
-        public string Description { get; } = "input filename number #, optionally cropped vertically";
-        public bool HasIndex { get; } = true;
-        public string Short { get; } = S;
-        public string Long { get; } = L;
-    }
-
-    class ArgColors : IArg
-    {
-        public const string S = "c";
-        public const string L = "colors";
-        public string? Params { get; } = "<filename>";
-        public string Description { get; } = $"JSON or PAL file with the list of available colors\n(default - {Config.DEFAULT_COLORS_FILE})";
-        public bool HasIndex { get; } = false;
-        public string Short { get; } = S;
-        public string Long { get; } = L;
-    }
-
-    class ArgMode : IArg
-    {
-        public const string S = "m";
-        public const string L = "mode";
-        public string? Params { get; } = "bg|sprites8x8|sprites8x16";
-        public string Description { get; } = "mode: backgrounds, 8x8 sprites or 8x16 sprites (default - bg)";
-        public bool HasIndex { get; } = false;
-        public string Short { get; } = S;
-        public string Long { get; } = L;
-    }
-
-    class ArgBgColor : IArg
-    {
-        public const string S = "b";
-        public const string L = "bg-color";
-        public string? Params { get; } = "<color>";
-        public string Description { get; } = "background color in HTML color format (default - auto)";
-        public bool HasIndex { get; } = false;
-        public string Short { get; } = S;
-        public string Long { get; } = L;
-    }
-
-    class ArgEnablePalettes : IArg
-    {
-        public const string S = "e";
-        public const string L = "enable-palettes";
-        public string? Params { get; } = "<palettes>";
-        public string Description { get; } = "zero-based comma separated list of palette numbers to use\n(default - 0,1,2,3)";
-        public bool HasIndex { get; } = false;
-        public string Short { get; } = S;
-        public string Long { get; } = L;
-    }
-
-    class ArgPalette : IArg
-    {
-        public const string S = "p";
-        public const string L = "palette";
-        public string? Params { get; } = "<colors>";
-        public string Description { get; } = "comma separated list of colors to use in palette number #\n(default - auto)";
-        public bool HasIndex { get; } = true;
-        public string Short { get; } = S;
-        public string Long { get; } = L;
-    }
-
-    class ArgPatternOffset : IArg
-    {
-        public const string S = "o";
-        public const string L = "pattern-offset";
-        public string? Params { get; } = "<tile_index>";
-        public string Description { get; } = "first tile index for pattern table for file number # (default - 0)";
-        public bool HasIndex { get; } = true;
-        public string Short { get; } = S;
-        public string Long { get; } = L;
-    }
-
-    class ArgAttributeTableYOffset : IArg
-    {
-        public const string S = "y";
-        public const string L = "attribute-table-y-offset";
-        public string? Params { get; } = "<pixels>";
-        public string Description { get; } = "vertical offset for attribute table in pixels (default - 0)";
-        public bool HasIndex { get; } = true;
-        public string Short { get; } = S;
-        public string Long { get; } = L;
-    }
-
-    class ArgSharePatternTable : IArg
-    {
-        public const string S = "s";
-        public const string L = "share-pattern-table";
-        public string? Params { get; } = null;
-        public string Description { get; } = "vertical offset for attribute table in pixels (default - 0)";
-        public bool HasIndex { get; } = false;
-        public string Short { get; } = S;
-        public string Long { get; } = L;
-    }
-
-    class ArgLossy : IArg
-    {
-        public const string S = "l";
-        public const string L = "lossy";
-        public string? Params { get; } = "<level>";
-        public string Description { get; } = "lossy level: 0-3, defines how many color distortion is allowed\nwithout throwing an error (default - 2)";
-        public bool HasIndex { get; } = false;
-        public string Short { get; } = S;
-        public string Long { get; } = L;
-    }
-
-    class ArgOutPreview : IArg
-    {
-        public const string S = "v";
-        public const string L = "out-preview";
-        public string? Params { get; } = "<filename.png>";
-        public string Description { get; } = "output filename for preview of image number #";
-        public bool HasIndex { get; } = true;
-        public string Short { get; } = S;
-        public string Long { get; } = L;
-    }
-
-    class ArgOutPalette : IArg
-    {
-        public const string S = "t";
-        public const string L = "out-palette";
-        public string? Params { get; } = "<filename>";
-        public string Description { get; } = "output filename for palette number #";
-        public bool HasIndex { get; } = true;
-        public string Short { get; } = S;
-        public string Long { get; } = L;
-    }
-
-    class ArgOutPatternTable : IArg
-    {
-        public const string S = "n";
-        public const string L = "out-pattern-table";
-        public string? Params { get; } = "<filename>";
-        public string Description { get; } = "output filename for pattern table of image number #";
-        public bool HasIndex { get; } = true;
-        public string Short { get; } = S;
-        public string Long { get; } = L;
-    }
-
-    class ArgOutNameTable : IArg
-    {
-        public const string S = "a";
-        public const string L = "out-name-table";
-        public string? Params { get; } = "<filename>";
-        public string Description { get; } = "output filename for nametable of image number #";
-        public bool HasIndex { get; } = true;
-        public string Short { get; } = S;
-        public string Long { get; } = L;
-    }
-
-    class ArgOutAttributeTable : IArg
-    {
-        public const string S = "u";
-        public const string L = "out-attribute-table";
-        public string? Params { get; } = "<filename>";
-        public string Description { get; } = "output filename for attribute table of image number #";
-        public bool HasIndex { get; } = true;
-        public string Short { get; } = S;
-        public string Long { get; } = L;
-    }
-
-    class ArgOutTilesCsv : IArg
-    {
-        public const string S = "z";
-        public const string L = "out-tiles-csv";
-        public string? Params { get; } = "<filename.csv>";
-        public string Description { get; } = "output filename for tiles info in CSV format";
-        public bool HasIndex { get; } = false;
-        public string Short { get; } = S;
-        public string Long { get; } = L;
-    }
-
-    class ArgOutPalettesCsv : IArg
-    {
-        public const string S = "x";
-        public const string L = "out-palettes-csv";
-        public string? Params { get; } = "<filename.csv>";
-        public string Description { get; } = "output filename for palettes info in CSV format";
-        public bool HasIndex { get; } = false;
-        public string Short { get; } = S;
-        public string Long { get; } = L;
-    }
-
-    class ArgOutColorsTable : IArg
-    {
-        public const string S = "g";
-        public const string L = "out-colors-table";
-        public string? Params { get; } = "<filename.png>";
-        public string Description { get; } = "output filename for graphical table of available colors\n(from \"--colors\" option)";
-        public bool HasIndex { get; } = false;
-        public string Short { get; } = S;
-        public string Long { get; } = L;
-    }
-
-    class ArgQuiet : IArg
-    {
-        public const string S = "q";
-        public const string L = "quiet";
-        public string? Params { get; } = null;
-        public string Description { get; } = "suppress console output";
-        public bool HasIndex { get; } = false;
-        public string Short { get; } = S;
-        public string Long { get; } = L;
-    }
-}
+namespace com.clusterrr.Famicom.NesTiler

+{

+    interface IArg

+    {

+        public string Short { get; }

+        public string Long { get; }

+        public string? Params { get; }

+        public string Description { get; }

+        public bool HasIndex { get; }

+

+        public static IArg[] Args = new IArg[]

+        {

+            new ArgIn(),

+            new ArgColors(),

+            new ArgMode(),

+            new ArgBgColor(),

+            new ArgEnablePalettes(),

+            new ArgPalette(),

+            new ArgPatternOffset(),

+            new ArgAttributeTableYOffset(),

+            new ArgSharePatternTable(),

+            new ArgLossy(),

+            new ArgOutPreview(),

+            new ArgOutPalette(),

+            new ArgOutPatternTable(),

+            new ArgOutNameTable(),

+            new ArgOutAttributeTable(),

+            new ArgOutTilesCsv(),

+            new ArgOutPalettesCsv(),

+            new ArgOutColorsTable(),

+            new ArgQuiet()

+        };

+    }

+

+    class ArgIn : IArg

+    {

+        public const string S = "i";

+        public const string L = "in";

+        public string? Params { get; } = "<filename>[:offset[:height]]";

+        public string Description { get; } = "input filename number #, optionally cropped vertically";

+        public bool HasIndex { get; } = true;

+        public string Short { get; } = S;

+        public string Long { get; } = L;

+    }

+

+    class ArgColors : IArg

+    {

+        public const string S = "c";

+        public const string L = "colors";

+        public string? Params { get; } = "<filename>";

+        public string Description { get; } = $"JSON or PAL file with the list of available colors\n(default - {Config.DEFAULT_COLORS_FILE})";

+        public bool HasIndex { get; } = false;

+        public string Short { get; } = S;

+        public string Long { get; } = L;

+    }

+

+    class ArgMode : IArg

+    {

+        public const string S = "m";

+        public const string L = "mode";

+        public string? Params { get; } = "bg|sprites8x8|sprites8x16";

+        public string Description { get; } = "mode: backgrounds, 8x8 sprites or 8x16 sprites (default - bg)";

+        public bool HasIndex { get; } = false;

+        public string Short { get; } = S;

+        public string Long { get; } = L;

+    }

+

+    class ArgBgColor : IArg

+    {

+        public const string S = "b";

+        public const string L = "bg-color";

+        public string? Params { get; } = "<color>";

+        public string Description { get; } = "background color in HTML color format (default - auto)";

+        public bool HasIndex { get; } = false;

+        public string Short { get; } = S;

+        public string Long { get; } = L;

+    }

+

+    class ArgEnablePalettes : IArg

+    {

+        public const string S = "e";

+        public const string L = "enable-palettes";

+        public string? Params { get; } = "<palettes>";

+        public string Description { get; } = "zero-based comma separated list of palette numbers to use\n(default - 0,1,2,3)";

+        public bool HasIndex { get; } = false;

+        public string Short { get; } = S;

+        public string Long { get; } = L;

+    }

+

+    class ArgPalette : IArg

+    {

+        public const string S = "p";

+        public const string L = "palette";

+        public string? Params { get; } = "<colors>";

+        public string Description { get; } = "comma separated list of colors to use in palette number #\n(default - auto)";

+        public bool HasIndex { get; } = true;

+        public string Short { get; } = S;

+        public string Long { get; } = L;

+    }

+

+    class ArgPatternOffset : IArg

+    {

+        public const string S = "o";

+        public const string L = "pattern-offset";

+        public string? Params { get; } = "<tile_index>";

+        public string Description { get; } = "first tile index for pattern table for file number # (default - 0)";

+        public bool HasIndex { get; } = true;

+        public string Short { get; } = S;

+        public string Long { get; } = L;

+    }

+

+    class ArgAttributeTableYOffset : IArg

+    {

+        public const string S = "y";

+        public const string L = "attribute-table-y-offset";

+        public string? Params { get; } = "<pixels>";

+        public string Description { get; } = "vertical offset for attribute table in pixels (default - 0)";

+        public bool HasIndex { get; } = true;

+        public string Short { get; } = S;

+        public string Long { get; } = L;

+    }

+

+    class ArgSharePatternTable : IArg

+    {

+        public const string S = "s";

+        public const string L = "share-pattern-table";

+        public string? Params { get; } = null;

+        public string Description { get; } = "vertical offset for attribute table in pixels (default - 0)";

+        public bool HasIndex { get; } = false;

+        public string Short { get; } = S;

+        public string Long { get; } = L;

+    }

+

+    class ArgLossy : IArg

+    {

+        public const string S = "l";

+        public const string L = "lossy";

+        public string? Params { get; } = "<level>";

+        public string Description { get; } = "lossy level: 0-3, defines how many color distortion is allowed\nwithout throwing an error (default - 2)";

+        public bool HasIndex { get; } = false;

+        public string Short { get; } = S;

+        public string Long { get; } = L;

+    }

+

+    class ArgOutPreview : IArg

+    {

+        public const string S = "v";

+        public const string L = "out-preview";

+        public string? Params { get; } = "<filename.png>";

+        public string Description { get; } = "output filename for preview of image number #";

+        public bool HasIndex { get; } = true;

+        public string Short { get; } = S;

+        public string Long { get; } = L;

+    }

+

+    class ArgOutPalette : IArg

+    {

+        public const string S = "t";

+        public const string L = "out-palette";

+        public string? Params { get; } = "<filename>";

+        public string Description { get; } = "output filename for palette number #";

+        public bool HasIndex { get; } = true;

+        public string Short { get; } = S;

+        public string Long { get; } = L;

+    }

+

+    class ArgOutPatternTable : IArg

+    {

+        public const string S = "n";

+        public const string L = "out-pattern-table";

+        public string? Params { get; } = "<filename>";

+        public string Description { get; } = "output filename for pattern table of image number #";

+        public bool HasIndex { get; } = true;

+        public string Short { get; } = S;

+        public string Long { get; } = L;

+    }

+

+    class ArgOutNameTable : IArg

+    {

+        public const string S = "a";

+        public const string L = "out-name-table";

+        public string? Params { get; } = "<filename>";

+        public string Description { get; } = "output filename for nametable of image number #";

+        public bool HasIndex { get; } = true;

+        public string Short { get; } = S;

+        public string Long { get; } = L;

+    }

+

+    class ArgOutAttributeTable : IArg

+    {

+        public const string S = "u";

+        public const string L = "out-attribute-table";

+        public string? Params { get; } = "<filename>";

+        public string Description { get; } = "output filename for attribute table of image number #";

+        public bool HasIndex { get; } = true;

+        public string Short { get; } = S;

+        public string Long { get; } = L;

+    }

+

+    class ArgOutTilesCsv : IArg

+    {

+        public const string S = "z";

+        public const string L = "out-tiles-csv";

+        public string? Params { get; } = "<filename.csv>";

+        public string Description { get; } = "output filename for tiles info in CSV format";

+        public bool HasIndex { get; } = false;

+        public string Short { get; } = S;

+        public string Long { get; } = L;

+    }

+

+    class ArgOutPalettesCsv : IArg

+    {

+        public const string S = "x";

+        public const string L = "out-palettes-csv";

+        public string? Params { get; } = "<filename.csv>";

+        public string Description { get; } = "output filename for palettes info in CSV format";

+        public bool HasIndex { get; } = false;

+        public string Short { get; } = S;

+        public string Long { get; } = L;

+    }

+

+    class ArgOutColorsTable : IArg

+    {

+        public const string S = "g";

+        public const string L = "out-colors-table";

+        public string? Params { get; } = "<filename.png>";

+        public string Description { get; } = "output filename for graphical table of available colors\n(from \"--colors\" option)";

+        public bool HasIndex { get; } = false;

+        public string Short { get; } = S;

+        public string Long { get; } = L;

+    }

+

+    class ArgQuiet : IArg

+    {

+        public const string S = "q";

+        public const string L = "quiet";

+        public string? Params { get; } = null;

+        public string Description { get; } = "suppress console output";

+        public bool HasIndex { get; } = false;

+        public string Short { get; } = S;

+        public string Long { get; } = L;

+    }

+}

diff --git a/NesTiler/ColorFinder.cs b/NesTiler/ColorFinder.cs
index 257e9b1..0a615cb 100644
--- a/NesTiler/ColorFinder.cs
+++ b/NesTiler/ColorFinder.cs
@@ -1,194 +1,194 @@
-using SkiaSharp;
-using System;
-using System.Collections.Generic;
-using System.Diagnostics;
-using System.Drawing;
-using System.IO;
-using System.Linq;
-using System.Text.Json;
-
-namespace com.clusterrr.Famicom.NesTiler
-{
-    class ColorFinder
-    {
-        static byte[] FORBIDDEN_COLORS = { 0x0D, 0x0E, 0x0F, 0x1E, 0x1F, 0x2E, 0x2F, 0x3E, 0x3F };
-
-        public readonly Dictionary<byte, SKColor> Colors;
-        private readonly Dictionary<SKColor, byte> cache = new();
-
-        public ColorFinder(string filename)
-        {
-            this.Colors = LoadColors(filename);
-        }
-
-        private static Dictionary<byte, SKColor> LoadColors(string filename)
-        {
-            Trace.WriteLine($"Loading colors from {filename}...");
-            if (!File.Exists(filename)) throw new FileNotFoundException($"Could not find file '{filename}'.", filename);
-            var data = File.ReadAllBytes(filename);
-            Dictionary<byte, SKColor> nesColors;
-            // Detect file type
-            if ((Path.GetExtension(filename) == ".pal") || ((data.Length == 192 || data.Length == 1536) && data.Where(b => b >= 128).Any()))
-            {
-                // Binary file
-                nesColors = new Dictionary<byte, SKColor>();
-                for (byte c = 0; c < 64; c++)
-                {
-                    var color = new SKColor(data[c * 3], data[(c * 3) + 1], data[(c * 3) + 2]);
-                    nesColors[c] = color;
-                }
-            }
-            else
-            {
-                var paletteJson = File.ReadAllText(filename);
-                var nesColorsStr = JsonSerializer.Deserialize<Dictionary<string, string>>(paletteJson);
-                if (nesColorsStr == null) throw new InvalidDataException($"Can't parse {filename}");
-                nesColors = nesColorsStr.ToDictionary(
-                    kv =>
-                    {
-                        try
-                        {
-                            var index = kv.Key.ToLower().StartsWith("0x") ? Convert.ToByte(kv.Key.Substring(2), 16) : byte.Parse(kv.Key);
-                            if (FORBIDDEN_COLORS.Contains(index))
-                                Trace.WriteLine($"WARNING! color #{kv.Key} is forbidden color, it will be ignored.");
-                            if (index > 0x3F) throw new ArgumentException($"{kv.Key} - invalid color index.", filename);
-                            return index;
-                        }
-                        catch (Exception ex) when (ex is FormatException || ex is OverflowException)
-                        {
-                            throw new ArgumentException($"{kv.Key} - invalid color index.", filename);
-                        }
-                    },
-                    kv =>
-                    {
-                        try
-                        {
-                            var color = ColorTranslator.FromHtml(kv.Value); ;
-                            return new SKColor(color.R, color.G, color.B);
-                        }
-                        catch (FormatException)
-                        {
-                            throw new ArgumentException($"{kv.Value} - invalid color.", filename);
-                        }
-                    }
-                );
-            }
-            // filter out invalid colors;
-            nesColors = nesColors.Where(kv => !FORBIDDEN_COLORS.Contains(kv.Key)).ToDictionary(kv => kv.Key, kv => kv.Value);
-            return nesColors;
-        }
-
-        /// <summary>
-        /// Find index of most similar color from NES colors
-        /// </summary>
-        /// <param name="color">Input color</param>
-        /// <returns>Output color index</returns>
-        public byte FindSimilarColorIndex(SKColor color)
-        {
-            if (cache.ContainsKey(color))
-                return cache[color];
-            byte result = byte.MaxValue;
-            double minDelta = double.MaxValue;
-            SKColor c = SKColors.Transparent;
-            foreach (var index in Colors.Keys)
-            {
-                var delta = color.GetDelta(Colors[index]);
-                if (delta < minDelta)
-                {
-                    minDelta = delta;
-                    result = index;
-                    c = Colors[index];
-                }
-            }
-            if (result == byte.MaxValue)
-                throw new KeyNotFoundException($"Invalid color: {color}.");
-            if (cache != null)
-                cache[color] = result;
-            return result;
-        }
-
-        /// <summary>
-        /// Find most similar color from list of colors
-        /// </summary>
-        /// <param name="colors">Haystack</param>
-        /// <param name="color">Niddle</param>
-        /// <returns>Output color</returns>
-        public SKColor FindSimilarColor(IEnumerable<SKColor> colors, SKColor color)
-        {
-            SKColor result = SKColors.Black;
-            double minDelta = double.MaxValue;
-            foreach (var c in colors)
-            {
-                var delta = color.GetDelta(c);
-                if (delta < minDelta)
-                {
-                    minDelta = delta;
-                    result = c;
-                }
-            }
-            return result;
-        }
-
-        /// <summary>
-        /// Find most similar color from NES colors
-        /// </summary>
-        /// <param name="color">Input colo</param>
-        /// <returns>Output color</returns>
-        public SKColor FindSimilarColor(SKColor color) => Colors[FindSimilarColorIndex(color)];
-
-        public void WriteColorsTable(string filename)
-        {
-            // Export colors to nice table image
-            const int colorSize = 64;
-            const int colorColumns = 16;
-            const int colorRows = 4;
-            const int strokeWidth = 5;
-            float textSize = 20;
-            float textYOffset = 39;
-            using var image = new SKBitmap(colorSize * colorColumns, colorSize * colorRows);
-            using var canvas = new SKCanvas(image);
-            for (int y = 0; y < colorRows; y++)
-            {
-                for (int x = 0; x < colorColumns; x++)
-                {
-                    SKColor color;
-                    SKPaint paint;
-                    if (Colors.TryGetValue((byte)((y * colorColumns) + x), out color))
-                    {
-                        paint = new SKPaint() { Color = color };
-                        canvas.DrawRegion(new SKRegion(new SKRectI(x * colorSize, y * colorSize, (x + 1) * colorSize, (y + 1) * colorSize)), paint);
-
-                        color = new SKColor((byte)(0xFF - color.Red), (byte)(0xFF - color.Green), (byte)(0xFF - color.Blue)); // invert color
-                        paint = new SKPaint()
-                        {
-                            Color = color,
-                            TextAlign = SKTextAlign.Center,
-                            TextSize = textSize,
-                            FilterQuality = SKFilterQuality.High,
-                            IsAntialias = true
-                        };
-                        canvas.DrawText($"{(y * colorColumns) + x:X02}", (x * colorSize) + (colorSize / 2), (y * colorSize) + textYOffset, paint);
-                    }
-                    else
-                    {
-                        paint = new SKPaint() { Color = SKColors.Black };
-                        SKPath path = new SKPath();
-                        canvas.DrawRegion(new SKRegion(new SKRectI(x * colorSize, y * colorSize, (x + 1) * colorSize, (y + 1) * colorSize)), paint);
-                        paint = new SKPaint()
-                        {
-                            Color = SKColors.Red,
-                            Style = SKPaintStyle.Stroke,
-                            StrokeCap = SKStrokeCap.Round,
-                            StrokeWidth = strokeWidth,
-                            FilterQuality = SKFilterQuality.High,
-                            IsAntialias = true
-                        };
-                        canvas.DrawLine((x * colorSize) + strokeWidth, (y * colorSize) + strokeWidth, ((x + 1) * colorSize) - strokeWidth, ((y + 1) * colorSize) - strokeWidth, paint);
-                        canvas.DrawLine(((x + 1) * colorSize) - strokeWidth, (y * colorSize) + strokeWidth, (x * colorSize) + strokeWidth, ((y + 1) * colorSize) - strokeWidth, paint);
-                    }
-                };
-            }
-            File.WriteAllBytes(filename, image.Encode(SKEncodedImageFormat.Png, 0).ToArray());
-        }
-    }
-}
+using SkiaSharp;

+using System;

+using System.Collections.Generic;

+using System.Diagnostics;

+using System.Drawing;

+using System.IO;

+using System.Linq;

+using System.Text.Json;

+

+namespace com.clusterrr.Famicom.NesTiler

+{

+    class ColorFinder

+    {

+        static byte[] FORBIDDEN_COLORS = { 0x0D, 0x0E, 0x0F, 0x1E, 0x1F, 0x2E, 0x2F, 0x3E, 0x3F };

+

+        public readonly Dictionary<byte, SKColor> Colors;

+        private readonly Dictionary<SKColor, byte> cache = new();

+

+        public ColorFinder(string filename)

+        {

+            this.Colors = LoadColors(filename);

+        }

+

+        private static Dictionary<byte, SKColor> LoadColors(string filename)

+        {

+            Trace.WriteLine($"Loading colors from {filename}...");

+            if (!File.Exists(filename)) throw new FileNotFoundException($"Could not find file '{filename}'.", filename);

+            var data = File.ReadAllBytes(filename);

+            Dictionary<byte, SKColor> nesColors;

+            // Detect file type

+            if ((Path.GetExtension(filename) == ".pal") || ((data.Length == 192 || data.Length == 1536) && data.Where(b => b >= 128).Any()))

+            {

+                // Binary file

+                nesColors = new Dictionary<byte, SKColor>();

+                for (byte c = 0; c < 64; c++)

+                {

+                    var color = new SKColor(data[c * 3], data[(c * 3) + 1], data[(c * 3) + 2]);

+                    nesColors[c] = color;

+                }

+            }

+            else

+            {

+                var paletteJson = File.ReadAllText(filename);

+                var nesColorsStr = JsonSerializer.Deserialize<Dictionary<string, string>>(paletteJson);

+                if (nesColorsStr == null) throw new InvalidDataException($"Can't parse {filename}");

+                nesColors = nesColorsStr.ToDictionary(

+                    kv =>

+                    {

+                        try

+                        {

+                            var index = kv.Key.ToLower().StartsWith("0x") ? Convert.ToByte(kv.Key.Substring(2), 16) : byte.Parse(kv.Key);

+                            if (FORBIDDEN_COLORS.Contains(index))

+                                Trace.WriteLine($"WARNING! color #{kv.Key} is forbidden color, it will be ignored.");

+                            if (index > 0x3F) throw new ArgumentException($"{kv.Key} - invalid color index.", filename);

+                            return index;

+                        }

+                        catch (Exception ex) when (ex is FormatException || ex is OverflowException)

+                        {

+                            throw new ArgumentException($"{kv.Key} - invalid color index.", filename);

+                        }

+                    },

+                    kv =>

+                    {

+                        try

+                        {

+                            var color = ColorTranslator.FromHtml(kv.Value); ;

+                            return new SKColor(color.R, color.G, color.B);

+                        }

+                        catch (FormatException)

+                        {

+                            throw new ArgumentException($"{kv.Value} - invalid color.", filename);

+                        }

+                    }

+                );

+            }

+            // filter out invalid colors;

+            nesColors = nesColors.Where(kv => !FORBIDDEN_COLORS.Contains(kv.Key)).ToDictionary(kv => kv.Key, kv => kv.Value);

+            return nesColors;

+        }

+

+        /// <summary>

+        /// Find index of most similar color from NES colors

+        /// </summary>

+        /// <param name="color">Input color</param>

+        /// <returns>Output color index</returns>

+        public byte FindSimilarColorIndex(SKColor color)

+        {

+            if (cache.ContainsKey(color))

+                return cache[color];

+            byte result = byte.MaxValue;

+            double minDelta = double.MaxValue;

+            SKColor c = SKColors.Transparent;

+            foreach (var index in Colors.Keys)

+            {

+                var delta = color.GetDelta(Colors[index]);

+                if (delta < minDelta)

+                {

+                    minDelta = delta;

+                    result = index;

+                    c = Colors[index];

+                }

+            }

+            if (result == byte.MaxValue)

+                throw new KeyNotFoundException($"Invalid color: {color}.");

+            if (cache != null)

+                cache[color] = result;

+            return result;

+        }

+

+        /// <summary>

+        /// Find most similar color from list of colors

+        /// </summary>

+        /// <param name="colors">Haystack</param>

+        /// <param name="color">Niddle</param>

+        /// <returns>Output color</returns>

+        public SKColor FindSimilarColor(IEnumerable<SKColor> colors, SKColor color)

+        {

+            SKColor result = SKColors.Black;

+            double minDelta = double.MaxValue;

+            foreach (var c in colors)

+            {

+                var delta = color.GetDelta(c);

+                if (delta < minDelta)

+                {

+                    minDelta = delta;

+                    result = c;

+                }

+            }

+            return result;

+        }

+

+        /// <summary>

+        /// Find most similar color from NES colors

+        /// </summary>

+        /// <param name="color">Input colo</param>

+        /// <returns>Output color</returns>

+        public SKColor FindSimilarColor(SKColor color) => Colors[FindSimilarColorIndex(color)];

+

+        public void WriteColorsTable(string filename)

+        {

+            // Export colors to nice table image

+            const int colorSize = 64;

+            const int colorColumns = 16;

+            const int colorRows = 4;

+            const int strokeWidth = 5;

+            float textSize = 20;

+            float textYOffset = 39;

+            using var image = new SKBitmap(colorSize * colorColumns, colorSize * colorRows);

+            using var canvas = new SKCanvas(image);

+            for (int y = 0; y < colorRows; y++)

+            {

+                for (int x = 0; x < colorColumns; x++)

+                {

+                    SKColor color;

+                    SKPaint paint;

+                    if (Colors.TryGetValue((byte)((y * colorColumns) + x), out color))

+                    {

+                        paint = new SKPaint() { Color = color };

+                        canvas.DrawRegion(new SKRegion(new SKRectI(x * colorSize, y * colorSize, (x + 1) * colorSize, (y + 1) * colorSize)), paint);

+

+                        color = new SKColor((byte)(0xFF - color.Red), (byte)(0xFF - color.Green), (byte)(0xFF - color.Blue)); // invert color

+                        paint = new SKPaint()

+                        {

+                            Color = color,

+                            TextAlign = SKTextAlign.Center,

+                            TextSize = textSize,

+                            FilterQuality = SKFilterQuality.High,

+                            IsAntialias = true

+                        };

+                        canvas.DrawText($"{(y * colorColumns) + x:X02}", (x * colorSize) + (colorSize / 2), (y * colorSize) + textYOffset, paint);

+                    }

+                    else

+                    {

+                        paint = new SKPaint() { Color = SKColors.Black };

+                        SKPath path = new SKPath();

+                        canvas.DrawRegion(new SKRegion(new SKRectI(x * colorSize, y * colorSize, (x + 1) * colorSize, (y + 1) * colorSize)), paint);

+                        paint = new SKPaint()

+                        {

+                            Color = SKColors.Red,

+                            Style = SKPaintStyle.Stroke,

+                            StrokeCap = SKStrokeCap.Round,

+                            StrokeWidth = strokeWidth,

+                            FilterQuality = SKFilterQuality.High,

+                            IsAntialias = true

+                        };

+                        canvas.DrawLine((x * colorSize) + strokeWidth, (y * colorSize) + strokeWidth, ((x + 1) * colorSize) - strokeWidth, ((y + 1) * colorSize) - strokeWidth, paint);

+                        canvas.DrawLine(((x + 1) * colorSize) - strokeWidth, (y * colorSize) + strokeWidth, (x * colorSize) + strokeWidth, ((y + 1) * colorSize) - strokeWidth, paint);

+                    }

+                };

+            }

+            File.WriteAllBytes(filename, image.Encode(SKEncodedImageFormat.Png, 0).ToArray());

+        }

+    }

+}

diff --git a/NesTiler/Config.cs b/NesTiler/Config.cs
index 927bf76..9c1c8f4 100644
--- a/NesTiler/Config.cs
+++ b/NesTiler/Config.cs
@@ -1,277 +1,277 @@
-using SkiaSharp;
-using System;
-using System.Collections.Generic;
-using System.Drawing;
-using System.IO;
-using System.Linq;
-using System.Text.RegularExpressions;
-
-namespace com.clusterrr.Famicom.NesTiler
-{
-    class Config
-    {
-        public const string DEFAULT_COLORS_FILE = @"nestiler-colors.json";
-
-        public enum TilesMode
-        {
-            Backgrounds,
-            Sprites8x8,
-            Sprites8x16
-        }
-
-        public string ColorsFile { get; private set; }
-        public Dictionary<int, string> ImageFiles { get; private set; } = new Dictionary<int, string>();
-        public SKColor? BgColor { get; private set; } = null;
-        public bool[] PaletteEnabled { get; private set; } = new bool[4] { true, true, true, true };
-        public Palette?[] FixedPalettes { get; private set; } = new Palette?[4] { null, null, null, null };
-        public TilesMode Mode { get; private set; } = TilesMode.Backgrounds;
-        public int TileWidth { get; private set; } = 8;
-        public int TileHeight { get; private set; } = 8;
-        public int TilePalWidth { get; private set; } = 16;
-        public int TilePalHeight { get; private set; } = 16;
-        public bool SharePatternTable { get; private set; } = false;
-        public int LossyLevel { get; private set; } = 2;
-        public int PatternTableStartOffsetShared { get; private set; } = 0;
-        public Dictionary<int, int> PatternTableStartOffsets { get; private set; } = new Dictionary<int, int>();
-        public Dictionary<int, int> PattributeTableYOffsets { get; private set; } = new Dictionary<int, int>();
-        public bool Quiet { get; private set; } = false;
-
-        // Filenames
-        public Dictionary<int, string> OutPreview { get; private set; } = new Dictionary<int, string>();
-        public Dictionary<int, string> OutPalette { get; private set; } = new Dictionary<int, string>();
-        public Dictionary<int, string> OutPatternTable { get; private set; } = new Dictionary<int, string>();
-        public Dictionary<int, string> OutNameTable { get; private set; } = new Dictionary<int, string>();
-        public Dictionary<int, string> OutAttributeTable { get; private set; } = new Dictionary<int, string>();
-        public string? OutPatternTableShared { get; private set; } = null;
-        public string? OutTilesCsv { get; private set; } = null;
-        public string? OutPalettesCsv { get; private set; } = null;
-        public string? OutColorsTable { get; private set; } = null;
-
-        private Config()
-        {
-            ColorsFile = Path.Combine(AppContext.BaseDirectory, DEFAULT_COLORS_FILE);
-            if (!File.Exists(ColorsFile))
-                ColorsFile = Path.Combine(Directory.GetCurrentDirectory(), DEFAULT_COLORS_FILE);
-            if (!File.Exists(ColorsFile) && !OperatingSystem.IsWindows())
-                ColorsFile = Path.Combine("/etc", DEFAULT_COLORS_FILE);
-        }
-
-        public static Config Parse(string[] args)
-        {
-            Config config = new Config();
-            var paramRegex = new Regex(@"^--?(?<param>[a-zA-Z-]+?)-?(?<index>[0-9]*)$");
-            for (int i = 0; i < args.Length; i++)
-            {
-                var match = paramRegex.Match(args[i]);
-                if (!match.Success)
-                    throw new ArgumentException($"Invalid argument.", args[i]);
-                string param = match.Groups["param"].Value;
-                string indexStr = match.Groups["index"].Value;
-                int indexNum = 0;
-                if (!string.IsNullOrEmpty(indexStr))
-                    indexNum = int.Parse(indexStr);
-                string value = i < args.Length - 1 ? args[i + 1] : "";
-                int valueInt;
-                switch (param)
-                {
-                    case ArgIn.S:
-                    case ArgIn.L:
-                        config.ImageFiles[indexNum] = value;
-                        i++;
-                        break;
-                    case ArgColors.S:
-                    case ArgColors.L:
-                        config.ColorsFile = value;
-                        i++;
-                        break;
-                    case ArgMode.S:
-                    case ArgMode.L:
-                        switch (value.ToLower())
-                        {
-                            case "sprite":
-                            case "sprites":
-                            case "sprites8x8":
-                                config.Mode = TilesMode.Sprites8x8;
-                                config.TileWidth = 8;
-                                config.TileHeight = 8;
-                                config.TilePalWidth = 8;
-                                config.TilePalHeight = 8;
-                                break;
-                            case "sprite8x16":
-                            case "sprites8x16":
-                                config.Mode = TilesMode.Sprites8x16;
-                                config.TileWidth = 8;
-                                config.TileHeight = 16;
-                                config.TilePalWidth = 8;
-                                config.TilePalHeight = 16;
-                                break;
-                            case "bg":
-                            case "background":
-                            case "backgrounds":
-                                config.Mode = TilesMode.Backgrounds;
-                                config.TileWidth = 8;
-                                config.TileHeight = 8;
-                                config.TilePalWidth = 16;
-                                config.TilePalHeight = 16;
-                                break;
-                            default:
-                                throw new ArgumentException($"{value} - invalid mode.", param);
-                        }
-                        i++;
-                        break;
-                    case ArgBgColor.S:
-                    case ArgBgColor.L:
-                        if (value != "auto")
-                        {
-                            try
-                            {
-                                config.BgColor = ColorTranslator.FromHtml(value).ToSKColor();
-                            }
-                            catch (FormatException)
-                            {
-                                throw new ArgumentException($"{value} - invalid color.", param);
-                            }
-                        }
-                        i++;
-                        break;
-                    case ArgEnablePalettes.S:
-                    case ArgEnablePalettes.L:
-                        {
-                            var paletteNumbersStr = value.Split(new char[] { ',', ' ' }, StringSplitOptions.RemoveEmptyEntries);
-                            for (int pal = 0; pal < config.PaletteEnabled.Length; pal++)
-                                config.PaletteEnabled[pal] = false; // disable all palettes
-                            foreach (var palNumStr in paletteNumbersStr)
-                            {
-                                if (!int.TryParse(palNumStr, out valueInt))
-                                    throw new ArgumentException($"\"{palNumStr}\" is not valid integer value.", param);
-                                if (valueInt < 0 || valueInt > 3)
-                                    throw new ArgumentException($"Palette index must be between 0 and 3.", param);
-                                config.PaletteEnabled[valueInt] = true;
-                            }
-                            if (!config.PaletteEnabled.Where(p => p).Any()) // will never be executed?
-                                throw new ArgumentException($"You need to enable at least one palette.", param);
-                        }
-                        i++;
-                        break;
-                    case ArgPalette.S:
-                    case ArgPalette.L:
-                        {
-                            var colors = value.Split(new char[] { ',', ' ' }, StringSplitOptions.RemoveEmptyEntries).Select(c =>
-                            {
-                                try
-                                {
-                                    return ColorTranslator.FromHtml(c).ToSKColor();
-                                }
-                                catch (FormatException)
-                                {
-                                    throw new ArgumentException($"{c} - invalid color.", param);
-                                }
-                            });
-                            config.FixedPalettes[indexNum] = new Palette(colors);
-                        }
-                        i++;
-                        break;
-                    case ArgPatternOffset.S:
-                    case ArgPatternOffset.L:
-                        if (!int.TryParse(value, out valueInt))
-                            throw new ArgumentException($"\"{value}\" is not valid integer value.", param);
-                        if (valueInt < 0 || valueInt >= 256)
-                            throw new ArgumentException($"Value ({valueInt}) must be between 0 and 255.", param);
-                        config.PatternTableStartOffsets[indexNum] = valueInt;
-                        config.PatternTableStartOffsetShared = config.PatternTableStartOffsets[indexNum];
-                        i++;
-                        break;
-                    case ArgAttributeTableYOffset.S:
-                    case ArgAttributeTableYOffset.L:
-                        if (!int.TryParse(value, out valueInt))
-                            throw new ArgumentException($"\"{value}\" is not valid integer value.", param);
-                        if (valueInt % 8 != 0)
-                            throw new ArgumentException($"Value ({valueInt}) must be divisible by 8.", param);
-                        if (valueInt < 0 || valueInt >= 256)
-                            throw new ArgumentException($"Value ({valueInt}) must be between 0 and 255.", param);
-                        config.PattributeTableYOffsets[indexNum] = valueInt;
-                        i++;
-                        break;
-                    case ArgSharePatternTable.S:
-                    case ArgSharePatternTable.L:
-                        config.SharePatternTable = true;
-                        break;
-                    case ArgLossy.S:
-                    case ArgLossy.L:
-                        if (!int.TryParse(value, out valueInt))
-                            throw new ArgumentException($"\"{value}\" is not valid integer value.", param);
-                        if (valueInt < 0 || valueInt > 3)
-                            throw new ArgumentException($"Value ({valueInt}) must be between 0 and 3.", param);
-                        config.LossyLevel = valueInt;
-                        i++;
-                        break;
-                    case ArgOutPreview.S:
-                    case ArgOutPreview.L:
-                        config.OutPreview[indexNum] = value;
-                        i++;
-                        break;
-                    case ArgOutPalette.S:
-                    case ArgOutPalette.L:
-                        if (indexNum < 0 || indexNum > 3)
-                            throw new ArgumentException($"Palette index must be between 0 and 3.", param);
-                        config.OutPalette[indexNum] = value;
-                        i++;
-                        break;
-                    case ArgOutPatternTable.S:
-                    case ArgOutPatternTable.L:
-                        config.OutPatternTable[indexNum] = value;
-                        config.OutPatternTableShared = value;
-                        i++;
-                        break;
-                    case ArgOutNameTable.S:
-                    case ArgOutNameTable.L:
-                        config.OutNameTable[indexNum] = value;
-                        i++;
-                        break;
-                    case ArgOutAttributeTable.S:
-                    case ArgOutAttributeTable.L:
-                        config.OutAttributeTable[indexNum] = value;
-                        i++;
-                        break;
-                    case ArgOutTilesCsv.S:
-                    case ArgOutTilesCsv.L:
-                        config.OutTilesCsv = value;
-                        i++;
-                        break;
-                    case ArgOutPalettesCsv.S:
-                    case ArgOutPalettesCsv.L:
-                        config.OutPalettesCsv = value;
-                        i++;
-                        break;
-                    case ArgOutColorsTable.S:
-                    case ArgOutColorsTable.L:
-                        config.OutColorsTable = value;
-                        i++;
-                        break;
-                    case ArgQuiet.S:
-                    case ArgQuiet.L:
-                        config.Quiet = true;
-                        break;
-                    default:
-                        throw new ArgumentException($"Unknown argument.", args[i]);
-                }
-            }
-
-            // Some input data checks
-            switch (config.Mode)
-            {
-                case TilesMode.Sprites8x8:
-                case TilesMode.Sprites8x16:
-                    if (!config.BgColor.HasValue) throw new InvalidDataException("You must specify background color for sprites mode.");
-                    break;
-            }
-            // Check output files
-            foreach (var c in new Dictionary<int, string>[] { config.OutPreview, config.OutPatternTable, config.OutNameTable, config.OutAttributeTable })
-                foreach (var f in c)
-                    if (!config.ImageFiles.ContainsKey(f.Key))
-                        throw new ArgumentException($"Can't write {f.Value} - there is no input image with index {f.Key}.");
-
-            return config;
-        }
-    }
-}
+using SkiaSharp;

+using System;

+using System.Collections.Generic;

+using System.Drawing;

+using System.IO;

+using System.Linq;

+using System.Text.RegularExpressions;

+

+namespace com.clusterrr.Famicom.NesTiler

+{

+    class Config

+    {

+        public const string DEFAULT_COLORS_FILE = @"nestiler-colors.json";

+

+        public enum TilesMode

+        {

+            Backgrounds,

+            Sprites8x8,

+            Sprites8x16

+        }

+

+        public string ColorsFile { get; private set; }

+        public Dictionary<int, string> ImageFiles { get; private set; } = new Dictionary<int, string>();

+        public SKColor? BgColor { get; private set; } = null;

+        public bool[] PaletteEnabled { get; private set; } = new bool[4] { true, true, true, true };

+        public Palette?[] FixedPalettes { get; private set; } = new Palette?[4] { null, null, null, null };

+        public TilesMode Mode { get; private set; } = TilesMode.Backgrounds;

+        public int TileWidth { get; private set; } = 8;

+        public int TileHeight { get; private set; } = 8;

+        public int TilePalWidth { get; private set; } = 16;

+        public int TilePalHeight { get; private set; } = 16;

+        public bool SharePatternTable { get; private set; } = false;

+        public int LossyLevel { get; private set; } = 2;

+        public int PatternTableStartOffsetShared { get; private set; } = 0;

+        public Dictionary<int, int> PatternTableStartOffsets { get; private set; } = new Dictionary<int, int>();

+        public Dictionary<int, int> PattributeTableYOffsets { get; private set; } = new Dictionary<int, int>();

+        public bool Quiet { get; private set; } = false;

+

+        // Filenames

+        public Dictionary<int, string> OutPreview { get; private set; } = new Dictionary<int, string>();

+        public Dictionary<int, string> OutPalette { get; private set; } = new Dictionary<int, string>();

+        public Dictionary<int, string> OutPatternTable { get; private set; } = new Dictionary<int, string>();

+        public Dictionary<int, string> OutNameTable { get; private set; } = new Dictionary<int, string>();

+        public Dictionary<int, string> OutAttributeTable { get; private set; } = new Dictionary<int, string>();

+        public string? OutPatternTableShared { get; private set; } = null;

+        public string? OutTilesCsv { get; private set; } = null;

+        public string? OutPalettesCsv { get; private set; } = null;

+        public string? OutColorsTable { get; private set; } = null;

+

+        private Config()

+        {

+            ColorsFile = Path.Combine(AppContext.BaseDirectory, DEFAULT_COLORS_FILE);

+            if (!File.Exists(ColorsFile))

+                ColorsFile = Path.Combine(Directory.GetCurrentDirectory(), DEFAULT_COLORS_FILE);

+            if (!File.Exists(ColorsFile) && !OperatingSystem.IsWindows())

+                ColorsFile = Path.Combine("/etc", DEFAULT_COLORS_FILE);

+        }

+

+        public static Config Parse(string[] args)

+        {

+            Config config = new Config();

+            var paramRegex = new Regex(@"^--?(?<param>[a-zA-Z-]+?)-?(?<index>[0-9]*)$");

+            for (int i = 0; i < args.Length; i++)

+            {

+                var match = paramRegex.Match(args[i]);

+                if (!match.Success)

+                    throw new ArgumentException($"Invalid argument.", args[i]);

+                string param = match.Groups["param"].Value;

+                string indexStr = match.Groups["index"].Value;

+                int indexNum = 0;

+                if (!string.IsNullOrEmpty(indexStr))

+                    indexNum = int.Parse(indexStr);

+                string value = i < args.Length - 1 ? args[i + 1] : "";

+                int valueInt;

+                switch (param)

+                {

+                    case ArgIn.S:

+                    case ArgIn.L:

+                        config.ImageFiles[indexNum] = value;

+                        i++;

+                        break;

+                    case ArgColors.S:

+                    case ArgColors.L:

+                        config.ColorsFile = value;

+                        i++;

+                        break;

+                    case ArgMode.S:

+                    case ArgMode.L:

+                        switch (value.ToLower())

+                        {

+                            case "sprite":

+                            case "sprites":

+                            case "sprites8x8":

+                                config.Mode = TilesMode.Sprites8x8;

+                                config.TileWidth = 8;

+                                config.TileHeight = 8;

+                                config.TilePalWidth = 8;

+                                config.TilePalHeight = 8;

+                                break;

+                            case "sprite8x16":

+                            case "sprites8x16":

+                                config.Mode = TilesMode.Sprites8x16;

+                                config.TileWidth = 8;

+                                config.TileHeight = 16;

+                                config.TilePalWidth = 8;

+                                config.TilePalHeight = 16;

+                                break;

+                            case "bg":

+                            case "background":

+                            case "backgrounds":

+                                config.Mode = TilesMode.Backgrounds;

+                                config.TileWidth = 8;

+                                config.TileHeight = 8;

+                                config.TilePalWidth = 16;

+                                config.TilePalHeight = 16;

+                                break;

+                            default:

+                                throw new ArgumentException($"{value} - invalid mode.", param);

+                        }

+                        i++;

+                        break;

+                    case ArgBgColor.S:

+                    case ArgBgColor.L:

+                        if (value != "auto")

+                        {

+                            try

+                            {

+                                config.BgColor = ColorTranslator.FromHtml(value).ToSKColor();

+                            }

+                            catch (FormatException)

+                            {

+                                throw new ArgumentException($"{value} - invalid color.", param);

+                            }

+                        }

+                        i++;

+                        break;

+                    case ArgEnablePalettes.S:

+                    case ArgEnablePalettes.L:

+                        {

+                            var paletteNumbersStr = value.Split(new char[] { ',', ' ' }, StringSplitOptions.RemoveEmptyEntries);

+                            for (int pal = 0; pal < config.PaletteEnabled.Length; pal++)

+                                config.PaletteEnabled[pal] = false; // disable all palettes

+                            foreach (var palNumStr in paletteNumbersStr)

+                            {

+                                if (!int.TryParse(palNumStr, out valueInt))

+                                    throw new ArgumentException($"\"{palNumStr}\" is not valid integer value.", param);

+                                if (valueInt < 0 || valueInt > 3)

+                                    throw new ArgumentException($"Palette index must be between 0 and 3.", param);

+                                config.PaletteEnabled[valueInt] = true;

+                            }

+                            if (!config.PaletteEnabled.Where(p => p).Any()) // will never be executed?

+                                throw new ArgumentException($"You need to enable at least one palette.", param);

+                        }

+                        i++;

+                        break;

+                    case ArgPalette.S:

+                    case ArgPalette.L:

+                        {

+                            var colors = value.Split(new char[] { ',', ' ' }, StringSplitOptions.RemoveEmptyEntries).Select(c =>

+                            {

+                                try

+                                {

+                                    return ColorTranslator.FromHtml(c).ToSKColor();

+                                }

+                                catch (FormatException)

+                                {

+                                    throw new ArgumentException($"{c} - invalid color.", param);

+                                }

+                            });

+                            config.FixedPalettes[indexNum] = new Palette(colors);

+                        }

+                        i++;

+                        break;

+                    case ArgPatternOffset.S:

+                    case ArgPatternOffset.L:

+                        if (!int.TryParse(value, out valueInt))

+                            throw new ArgumentException($"\"{value}\" is not valid integer value.", param);

+                        if (valueInt < 0 || valueInt >= 256)

+                            throw new ArgumentException($"Value ({valueInt}) must be between 0 and 255.", param);

+                        config.PatternTableStartOffsets[indexNum] = valueInt;

+                        config.PatternTableStartOffsetShared = config.PatternTableStartOffsets[indexNum];

+                        i++;

+                        break;

+                    case ArgAttributeTableYOffset.S:

+                    case ArgAttributeTableYOffset.L:

+                        if (!int.TryParse(value, out valueInt))

+                            throw new ArgumentException($"\"{value}\" is not valid integer value.", param);

+                        if (valueInt % 8 != 0)

+                            throw new ArgumentException($"Value ({valueInt}) must be divisible by 8.", param);

+                        if (valueInt < 0 || valueInt >= 256)

+                            throw new ArgumentException($"Value ({valueInt}) must be between 0 and 255.", param);

+                        config.PattributeTableYOffsets[indexNum] = valueInt;

+                        i++;

+                        break;

+                    case ArgSharePatternTable.S:

+                    case ArgSharePatternTable.L:

+                        config.SharePatternTable = true;

+                        break;

+                    case ArgLossy.S:

+                    case ArgLossy.L:

+                        if (!int.TryParse(value, out valueInt))

+                            throw new ArgumentException($"\"{value}\" is not valid integer value.", param);

+                        if (valueInt < 0 || valueInt > 3)

+                            throw new ArgumentException($"Value ({valueInt}) must be between 0 and 3.", param);

+                        config.LossyLevel = valueInt;

+                        i++;

+                        break;

+                    case ArgOutPreview.S:

+                    case ArgOutPreview.L:

+                        config.OutPreview[indexNum] = value;

+                        i++;

+                        break;

+                    case ArgOutPalette.S:

+                    case ArgOutPalette.L:

+                        if (indexNum < 0 || indexNum > 3)

+                            throw new ArgumentException($"Palette index must be between 0 and 3.", param);

+                        config.OutPalette[indexNum] = value;

+                        i++;

+                        break;

+                    case ArgOutPatternTable.S:

+                    case ArgOutPatternTable.L:

+                        config.OutPatternTable[indexNum] = value;

+                        config.OutPatternTableShared = value;

+                        i++;

+                        break;

+                    case ArgOutNameTable.S:

+                    case ArgOutNameTable.L:

+                        config.OutNameTable[indexNum] = value;

+                        i++;

+                        break;

+                    case ArgOutAttributeTable.S:

+                    case ArgOutAttributeTable.L:

+                        config.OutAttributeTable[indexNum] = value;

+                        i++;

+                        break;

+                    case ArgOutTilesCsv.S:

+                    case ArgOutTilesCsv.L:

+                        config.OutTilesCsv = value;

+                        i++;

+                        break;

+                    case ArgOutPalettesCsv.S:

+                    case ArgOutPalettesCsv.L:

+                        config.OutPalettesCsv = value;

+                        i++;

+                        break;

+                    case ArgOutColorsTable.S:

+                    case ArgOutColorsTable.L:

+                        config.OutColorsTable = value;

+                        i++;

+                        break;

+                    case ArgQuiet.S:

+                    case ArgQuiet.L:

+                        config.Quiet = true;

+                        break;

+                    default:

+                        throw new ArgumentException($"Unknown argument.", args[i]);

+                }

+            }

+

+            // Some input data checks

+            switch (config.Mode)

+            {

+                case TilesMode.Sprites8x8:

+                case TilesMode.Sprites8x16:

+                    if (!config.BgColor.HasValue) throw new InvalidDataException("You must specify background color for sprites mode.");

+                    break;

+            }

+            // Check output files

+            foreach (var c in new Dictionary<int, string>[] { config.OutPreview, config.OutPatternTable, config.OutNameTable, config.OutAttributeTable })

+                foreach (var f in c)

+                    if (!config.ImageFiles.ContainsKey(f.Key))

+                        throw new ArgumentException($"Can't write {f.Value} - there is no input image with index {f.Key}.");

+

+            return config;

+        }

+    }

+}

diff --git a/NesTiler/NesTiler.csproj b/NesTiler/NesTiler.csproj
index 4f12212..40a55ba 100644
--- a/NesTiler/NesTiler.csproj
+++ b/NesTiler/NesTiler.csproj
@@ -4,6 +4,9 @@
     <TargetFramework>net6.0</TargetFramework>

     <RootNamespace>com.clusterrr.Famicom.NesTiler</RootNamespace>

     <AssemblyName>nestiler</AssemblyName>

+    <PublishSingleFile>true</PublishSingleFile>

+    <IncludeAllContentForSelfExtract>true</IncludeAllContentForSelfExtract>

+    <PublishReadyToRun>true</PublishReadyToRun>

   </PropertyGroup>

   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">

     <AllowUnsafeBlocks>False</AllowUnsafeBlocks>