SabreTools/SabreTools.Serialization
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Add A78 cart writer

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This commit is contained in:
Matt Nadareski
2026-04-14 11:59:12 -04:00
parent ea2a1daadf
commit 3896b75b3b
5 changed files with 198 additions and 143 deletions
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24
SabreTools.Serialization.Writers.Test/Atari7800CartTests.cs Normal file
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@@ -0,0 +1,24 @@
using System.IO;
using Xunit;
namespace SabreTools.Serialization.Writers.Test
{
public class Atari7800CartTests
{
[Fact]
public void SerializeArray_Null_Null()
{
var serializer = new Atari7800Cart();
byte[]? actual = serializer.SerializeArray(null);
Assert.Null(actual);
}
[Fact]
public void SerializeStream_Null_Null()
{
var serializer = new Atari7800Cart();
Stream? actual = serializer.SerializeStream(null);
Assert.Null(actual);
}
}
}

165
SabreTools.Serialization.Writers/Atari7800Cart.cs Normal file
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@@ -0,0 +1,165 @@
using System;
using System.IO;
using SabreTools.Data.Models.Atari7800;
using SabreTools.IO.Extensions;
using SabreTools.Numerics.Extensions;
namespace SabreTools.Serialization.Writers
{
public class Atari7800Cart : BaseBinaryWriter<Cart>
{
/// <inheritdoc/>
public override Stream? SerializeStream(Cart? obj)
{
// If the metadata file is null
if (obj is null)
return null;
// Setup the writer and output
var stream = new MemoryStream();
// Write header
if (!WriteHeader(obj.Header, stream))
return null;
// Write data
if (!WriteRom(obj.Data, stream))
return null;
// Return the stream
stream.SeekIfPossible(0, SeekOrigin.Begin);
return stream;
}
/// <summary>
/// Write header data to the stream
/// </summary>
/// <param name="stream">Stream to write to</param>
/// <returns>True if the writing was successful, false otherwise</returns>
public bool WriteHeader(Header? obj, Stream stream)
{
if (obj is null)
{
if (Debug) Console.WriteLine("Header was invalid!");
return false;
}
// Try to write the data
try
{
if (Debug) Console.WriteLine("Attempting to write header data");
// Byte 0
stream.Write(obj.HeaderVersion);
stream.Flush();
// Bytes 1-16
stream.Write(obj.MagicText);
stream.Flush();
// Bytes 17-48
stream.Write(obj.CartTitle);
stream.Flush();
// Bytes 49-52
stream.Write(obj.RomSizeWithoutHeader);
stream.Flush();
// Bytes 53-54
stream.Write((ushort)obj.CartType);
stream.Flush();
// Bytes 55-56
stream.Write((byte)obj.Controller1Type);
stream.Write((byte)obj.Controller2Type);
stream.Flush();
// Byte 57
stream.Write((byte)obj.TVType);
stream.Flush();
// Byte 58
stream.Write((byte)obj.SaveDevice);
stream.Flush();
// Bytes 59-62
stream.Write(obj.Reserved);
stream.Flush();
// Byte 63
stream.Write((byte)obj.SlotPassthroughDevice);
stream.Flush();
if (obj.HeaderVersion >= 4)
{
// Byte 64
stream.Write((byte)obj.Mapper);
stream.Flush();
// Byte 65
stream.Write((byte)obj.MapperOptions);
stream.Flush();
// Byte 66-67
stream.Write((ushort)obj.AudioDevice);
stream.Flush();
// Byte 68-69
stream.Write((ushort)obj.Interrupt);
stream.Flush();
// Bytes 70-99
stream.Write(obj.Padding);
stream.Flush();
}
else
{
// Bytes 64-99
stream.Write(obj.Padding);
stream.Flush();
}
// Bytes 100-127
stream.Write(obj.EndMagicText);
stream.Flush();
// Header extracted
return true;
}
catch (Exception ex)
{
if (Debug) Console.Error.WriteLine(ex);
return false;
}
}
/// <summary>
/// Write rom data to the stream
/// </summary>
/// <param name="stream">Stream to write to</param>
/// <returns>True if the writing was successful, false otherwise</returns>
public bool WriteRom(byte[]? obj, Stream stream)
{
if (obj is null || obj.Length == 0)
{
if (Debug) Console.WriteLine("ROM data was invalid!");
return false;
}
// Try to write the data
try
{
if (Debug) Console.WriteLine("Attempting to write ROM data");
stream.Write(obj, 0, obj.Length);
stream.Flush();
return true;
}
catch (Exception ex)
{
if (Debug) Console.Error.WriteLine(ex);
return false;
}
}
}
}

7
SabreTools.Wrappers/Atari7800Cart.Extraction.cs
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@@ -14,6 +14,9 @@ namespace SabreTools.Wrappers
: Path.GetFileNameWithoutExtension(Filename);
string basePath = Path.Combine(outputDirectory, baseFilename);
// Create the writer
var writer = new Serialization.Writers.Atari7800Cart { Debug = includeDebug };
// Check if any data was extracted successfully
bool success = false;
@@ -27,7 +30,7 @@ namespace SabreTools.Wrappers
try
{
using var fs = File.Open(headerPath, FileMode.Create, FileAccess.Write, FileShare.None);
success |= WriteHeader(fs, includeDebug);
success |= writer.WriteHeader(Header, fs);
}
catch (Exception ex)
{
@@ -45,7 +48,7 @@ namespace SabreTools.Wrappers
try
{
using var fs = File.Open(romPath, FileMode.Create, FileAccess.Write, FileShare.None);
success |= WriteRom(fs, includeDebug);
success |= writer.WriteRom(Model.Data, fs);
}
catch (Exception ex)
{

144
SabreTools.Wrappers/Atari7800Cart.Writing.cs
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@@ -1,7 +1,5 @@
using System;
using System.IO;
using SabreTools.Data.Models.Atari7800;
using SabreTools.Numerics.Extensions;
namespace SabreTools.Wrappers
{
@@ -26,145 +24,9 @@ namespace SabreTools.Wrappers
return false;
}
// Open the output file for writing
using var fs = File.Open(outputPath, FileMode.Create, FileAccess.Write, FileShare.None);
// Header data
if (!WriteHeader(fs, includeDebug))
return false;
// ROM data
if (!WriteRom(fs, includeDebug))
return false;
return true;
}
/// <summary>
/// Write header data to the stream
/// </summary>
/// <param name="stream">Stream to write to</param>
/// <param name="includeDebug">True to include debug data, false otherwise</param>
/// <returns>True if the writing was successful, false otherwise</returns>
private bool WriteHeader(Stream stream, bool includeDebug)
{
if (includeDebug) Console.WriteLine("Attempting to write header data");
if (Header is null)
{
if (includeDebug) Console.WriteLine("Header was invalid!");
return false;
}
// Try to write the data
try
{
// Byte 0
stream.Write(Header.HeaderVersion);
stream.Flush();
// Bytes 1-16
stream.Write(Header.MagicText);
stream.Flush();
// Bytes 17-48
stream.Write(Header.CartTitle);
stream.Flush();
// Bytes 49-52
stream.Write(Header.RomSizeWithoutHeader);
stream.Flush();
// Bytes 53-54
stream.Write((ushort)Header.CartType);
stream.Flush();
// Bytes 55-56
stream.Write((byte)Header.Controller1Type);
stream.Write((byte)Header.Controller2Type);
stream.Flush();
// Byte 57
stream.Write((byte)Header.TVType);
stream.Flush();
// Byte 58
stream.Write((byte)Header.SaveDevice);
stream.Flush();
// Bytes 59-62
stream.Write(Header.Reserved);
stream.Flush();
// Byte 63
stream.Write((byte)Header.SlotPassthroughDevice);
stream.Flush();
if (HeaderVersion >= 4)
{
// Byte 64
stream.Write((byte)Header.Mapper);
stream.Flush();
// Byte 65
stream.Write((byte)Header.MapperOptions);
stream.Flush();
// Byte 66-67
stream.Write((ushort)Header.AudioDevice);
stream.Flush();
// Byte 68-69
stream.Write((ushort)Header.Interrupt);
stream.Flush();
// Bytes 70-99
stream.Write(Header.Padding);
stream.Flush();
}
else
{
// Bytes 64-99
stream.Write(Header.Padding);
stream.Flush();
}
// Bytes 100-127
stream.Write(Header.EndMagicText);
stream.Flush();
// Header extracted
return true;
}
catch (Exception ex)
{
if (includeDebug) Console.Error.WriteLine(ex);
return false;
}
}
/// <summary>
/// Write rom data to the stream
/// </summary>
/// <param name="stream">Stream to write to</param>
/// <param name="includeDebug">True to include debug data, false otherwise</param>
/// <returns>True if the writing was successful, false otherwise</returns>
private bool WriteRom(Stream stream, bool includeDebug)
{
if (includeDebug) Console.WriteLine("Attempting to write ROM data");
// Try to write the data
try
{
stream.Write(Model.Data, 0, Model.Data.Length);
stream.Flush();
return true;
}
catch (Exception ex)
{
if (includeDebug) Console.Error.WriteLine(ex);
return false;
}
// Create and use the writer
var writer = new Serialization.Writers.Atari7800Cart { Debug = includeDebug };
return writer.SerializeFile(Model, outputPath);
}
}
}

1
SabreTools.Wrappers/SabreTools.Wrappers.csproj
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@@ -51,6 +51,7 @@
<ProjectReference Include="..\SabreTools.Data.Models\SabreTools.Data.Models.csproj" />
<ProjectReference Include="..\SabreTools.ObjectIdentifier\SabreTools.ObjectIdentifier.csproj" />
<ProjectReference Include="..\SabreTools.Serialization.Readers\SabreTools.Serialization.Readers.csproj" />
<ProjectReference Include="..\SabreTools.Serialization.Writers\SabreTools.Serialization.Writers.csproj" />
</ItemGroup>
</Project>