/// <summary>
/// Parse a MAME Listrom DAT and return all found games and roms within
/// </summary>
/// <param name="filename">Name of the file to be parsed</param>
/// <param name="indexId">Index ID for the DAT</param>
/// <param name="keep">True if full pathnames are to be kept, false otherwise (default)</param>
/// <param name="throwOnError">True if the error that is thrown should be thrown back to the caller, false otherwise</param>
/// <remarks>
/// In a new style MAME listrom DAT, each game has the following format:
///
/// ROMs required for driver "005".
/// Name Size Checksum
/// 1346b.cpu-u25 2048 CRC(8e68533e) SHA1(a257c556d31691068ed5c991f1fb2b51da4826db)
/// 6331.sound-u8 32 BAD CRC(1d298cb0) SHA1(bb0bb62365402543e3154b9a77be9c75010e6abc) BAD_DUMP
/// 16v8h-blue.u24 279 NO GOOD DUMP KNOWN
/// </remarks>
protected override void ParseFile(string filename, int indexId, bool keep, bool throwOnError = false)
{
// Open a file reader
Encoding enc = FileExtensions.GetEncoding(filename);
StreamReader sr = new StreamReader(FileExtensions.TryOpenRead(filename), enc);
string gamename = string.Empty;
while (!sr.EndOfStream)
{
try
{
string line = sr.ReadLine().Trim();
// If we have a blank line, we just skip it
if (string.IsNullOrWhiteSpace(line))
{
continue;
}
// If we have the descriptor line, ignore it
else if (line == "Name Size Checksum")
{
continue;
}
// If we have the beginning of a game, set the name of the game
else if (line.StartsWith("ROMs required for"))
{
gamename = Regex.Match(line, @"^ROMs required for \S*? string.Empty(.*?)string.Empty\.").Groups[1].Value;
}
// If we have a machine with no required roms (usually internal devices), skip it
else if (line.StartsWith("No ROMs required for"))
{
continue;
}
// Otherwise, we assume we have a rom that we need to add
else
{
// First, we preprocess the line so that the rom name is consistently correct
string[] split = line.Split(new string[] { " " }, StringSplitOptions.RemoveEmptyEntries);
// If the line doesn't have the 4 spaces of padding, check for 3
if (split.Length == 1)
{
split = line.Split(new string[] { " " }, StringSplitOptions.RemoveEmptyEntries);
}
// If the split is still unsuccessful, log it and skip
if (split.Length == 1)
{
logger.Warning($"Possibly malformed line: '{line}'");
}
string romname = split[0];
line = line.Substring(romname.Length);
// Next we separate the ROM into pieces
split = line.Split(new char[0], StringSplitOptions.RemoveEmptyEntries);
// Standard Disks have 2 pieces (name, sha1)
if (split.Length == 1)
{
Disk disk = new Disk()
{
Name = romname,
SHA1 = Sanitizer.CleanListromHashData(split[0]),
Machine = new Machine
{
Name = gamename,
},
Source = new Source
{
Index = indexId,
Name = filename,
},
};
ParseAddHelper(disk);
}
// Baddump Disks have 4 pieces (name, BAD, sha1, BAD_DUMP)
else if (split.Length == 3 && line.EndsWith("BAD_DUMP"))
{
Disk disk = new Disk()
{
Name = romname,
SHA1 = Sanitizer.CleanListromHashData(split[1]),
ItemStatus = ItemStatus.BadDump,
Machine = new Machine
{
Name = gamename,
},
Source = new Source
{
Index = indexId,
Name = filename,
},
};
ParseAddHelper(disk);
}
// Standard ROMs have 4 pieces (name, size, crc, sha1)
else if (split.Length == 3)
{
Rom rom = new Rom()
{
Name = romname,
Size = Sanitizer.CleanLong(split[0]),
CRC = Sanitizer.CleanListromHashData(split[1]),
SHA1 = Sanitizer.CleanListromHashData(split[2]),
Machine = new Machine
{
Name = gamename,
},
Source = new Source
{
Index = indexId,
Name = filename,
},
};
ParseAddHelper(rom);
}
// Nodump Disks have 5 pieces (name, NO, GOOD, DUMP, KNOWN)
else if (split.Length == 4 && line.EndsWith("NO GOOD DUMP KNOWN"))
{
Disk disk = new Disk()
{
Name = romname,
ItemStatus = ItemStatus.Nodump,
Machine = new Machine
{
Name = gamename,
},
Source = new Source
{
Index = indexId,
Name = filename,
},
};
ParseAddHelper(disk);
}
// Baddump ROMs have 6 pieces (name, size, BAD, crc, sha1, BAD_DUMP)
else if (split.Length == 5 && line.EndsWith("BAD_DUMP"))
{
Rom rom = new Rom()
{
Name = romname,
Size = Sanitizer.CleanLong(split[0]),
CRC = Sanitizer.CleanListromHashData(split[2]),
SHA1 = Sanitizer.CleanListromHashData(split[3]),
ItemStatus = ItemStatus.BadDump,
Machine = new Machine
{
Name = gamename,
},
Source = new Source
{
Index = indexId,
Name = filename,
},
};
ParseAddHelper(rom);
}
// Nodump ROMs have 6 pieces (name, size, NO, GOOD, DUMP, KNOWN)
else if (split.Length == 5 && line.EndsWith("NO GOOD DUMP KNOWN"))
{
Rom rom = new Rom()
{
Name = romname,
Size = Sanitizer.CleanLong(split[0]),
ItemStatus = ItemStatus.Nodump,
Machine = new Machine
{
Name = gamename,
},
Source = new Source
{
Index = indexId,
Name = filename,
},
};
ParseAddHelper(rom);
}
// If we have something else, it's invalid
else
{
logger.Warning($"Invalid line detected: '{romname} {line}'");
}
}
}
catch (Exception ex)
{
string message = $"'{filename}' - There was an error parsing at position {sr.BaseStream.Position}";
logger.Error(ex, message);
if (throwOnError)
{
sr.Dispose();
throw new Exception(message, ex);
}
}
}
}