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Create and use MAME Listrom serializer

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This commit is contained in:
Matt Nadareski
2023-07-30 10:29:14 -04:00
parent 378f9cbfd1
commit bcef1c20b2
9 changed files with 701 additions and 460 deletions
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190
SabreTools.Serialization/Listrom.Deserializer.cs Normal file
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using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using SabreTools.Models.Listrom;
namespace SabreTools.Serialization
{
/// <summary>
/// Deserializer for MAME listrom files
/// </summary>
public partial class Listrom
{
/// <summary>
/// Deserializes a MAME listrom file to the defined type
/// </summary>
/// <param name="path">Path to the file to deserialize</param>
/// <returns>Deserialized data on success, null on failure</returns>
public static MetadataFile? Deserialize(string path)
{
using var stream = PathProcessor.OpenStream(path);
return Deserialize(stream);
}
/// <summary>
/// Deserializes a MAME listrom file in a stream to the defined type
/// </summary>
/// <param name="stream">Stream to deserialize</param>
/// <returns>Deserialized data on success, null on failure</returns>
public static MetadataFile? Deserialize(Stream? stream)
{
// If the stream is null
if (stream == null)
return default;
// Setup the reader and output
var reader = new StreamReader(stream, Encoding.UTF8);
var dat = new MetadataFile();
Set? set = null;
var sets = new List<Set?>();
var rows = new List<Row?>();
var additional = new List<string>();
while (!reader.EndOfStream)
{
// Read the line and don't split yet
string? line = reader.ReadLine();
if (string.IsNullOrWhiteSpace(line))
{
// If we have a set to process
if (set != null)
{
set.Row = rows.ToArray();
sets.Add(set);
set = null;
rows.Clear();
}
continue;
}
// Set lines are unique
if (line.StartsWith("ROMs required for driver"))
{
string driver = line["ROMs required for driver".Length..].Trim('"', ' ', '.');
set = new Set { Driver = driver };
continue;
}
else if (line.StartsWith("No ROMs required for driver"))
{
string driver = line["No ROMs required for driver".Length..].Trim('"', ' ', '.');
set = new Set { Driver = driver };
continue;
}
else if (line.StartsWith("ROMs required for device"))
{
string device = line["ROMs required for device".Length..].Trim('"', ' ', '.');
set = new Set { Device = device };
continue;
}
else if (line.StartsWith("No ROMs required for device"))
{
string device = line["No ROMs required for device".Length..].Trim('"', ' ', '.');
set = new Set { Device = device };
continue;
}
else if (line.Equals("Name Size Checksum", StringComparison.OrdinalIgnoreCase))
{
// No-op
continue;
}
// Split the line for the name iteratively
string[]? lineParts = line?.Split(" ", StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
if (lineParts?.Length == 1)
lineParts = line?.Split(" ", StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
if (lineParts?.Length == 1)
lineParts = line?.Split(" ", StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
if (lineParts?.Length == 1)
lineParts = line?.Split(" ", StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
// Read the name and set the rest of the line for processing
string name = lineParts[0];
string trimmedLine = line[name.Length..];
lineParts = trimmedLine?.Split(' ', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
// The number of items in the row explains what type of row it is
var row = new Row();
switch (lineParts.Length)
{
// Normal CHD (Name, MD5/SHA1)
case 1:
row.Name = name;
if (line.Contains("MD5("))
row.MD5 = lineParts[0]["MD5".Length..].Trim('(', ')');
else
row.SHA1 = lineParts[0]["SHA1".Length..].Trim('(', ')');
break;
// Normal ROM (Name, Size, CRC, SHA1)
case 3 when line.Contains("CRC"):
row.Name = name;
row.Size = lineParts[0];
row.CRC = lineParts[1]["CRC".Length..].Trim('(', ')');
row.SHA1 = lineParts[2]["SHA1".Length..].Trim('(', ')');
break;
// Bad CHD (Name, BAD, SHA1, BAD_DUMP)
case 3 when line.Contains("BAD_DUMP"):
row.Name = name;
row.Bad = true;
if (line.Contains("MD5("))
row.MD5 = lineParts[1]["MD5".Length..].Trim('(', ')');
else
row.SHA1 = lineParts[1]["SHA1".Length..].Trim('(', ')');
break;
// Nodump CHD (Name, NO GOOD DUMP KNOWN)
case 4 when line.Contains("NO GOOD DUMP KNOWN"):
row.Name = name;
row.NoGoodDumpKnown = true;
break;
// Bad ROM (Name, Size, BAD, CRC, MD5/SHA1, BAD_DUMP)
case 5 when line.Contains("BAD_DUMP"):
row.Name = name;
row.Size = lineParts[0];
row.Bad = true;
row.CRC = lineParts[2]["CRC".Length..].Trim('(', ')');
if (line.Contains("MD5("))
row.SHA1 = lineParts[3]["MD5".Length..].Trim('(', ')');
else
row.SHA1 = lineParts[3]["SHA1".Length..].Trim('(', ')');
break;
// Nodump ROM (Name, Size, NO GOOD DUMP KNOWN)
case 5 when line.Contains("NO GOOD DUMP KNOWN"):
row.Name = name;
row.Size = lineParts[0];
row.NoGoodDumpKnown = true;
break;
default:
row = null;
additional.Add(line);
break;
}
if (row != null)
rows.Add(row);
}
// If we have a set to process
if (set != null)
{
set.Row = rows.ToArray();
sets.Add(set);
set = null;
rows.Clear();
}
// Add extra pieces and return
dat.Set = sets.ToArray();
dat.ADDITIONAL_ELEMENTS = additional.ToArray();
return dat;
}
}
}