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This commit is contained in:
bird_egop
2026-05-09 20:36:43 +03:00
parent d73a6dde70
commit eb458ad9a8
43 changed files with 1562 additions and 1233 deletions
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NResLib/NResParser.cs
+71 -33
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@@ -35,6 +35,16 @@ public static class NResParser
TotalFileLengthBytes: BinaryPrimitives.ReadInt32LittleEndian(buffer[12..16])
);
if (header.Version != 0x100)
{
return new NResParseResult(null, $"Неожиданная версия NRes: 0x{header.Version:X}");
}
if (header.FileCount < 0)
{
return new NResParseResult(null, $"Некорректное количество записей NRes: {header.FileCount}");
}
if (header.TotalFileLengthBytes != nResFs.Length)
{
return new NResParseResult(
@@ -45,7 +55,14 @@ public static class NResParser
);
}
nResFs.Seek(-header.FileCount * 64, SeekOrigin.End);
var directorySize = header.FileCount * 64L;
var directoryOffset = header.TotalFileLengthBytes - directorySize;
if (directoryOffset < 16 || directoryOffset + directorySize != header.TotalFileLengthBytes)
{
return new NResParseResult(null, "Некорректное расположение каталога NRes");
}
nResFs.Seek(directoryOffset, SeekOrigin.Begin);
var elements = new List<ListMetadataItem>(header.FileCount);
@@ -53,41 +70,32 @@ public static class NResParser
for (int i = 0; i < header.FileCount; i++)
{
nResFs.ReadExactly(metaDataBuffer);
var type = "";
var typeId = BinaryPrimitives.ReadUInt32LittleEndian(metaDataBuffer[0..4]);
var type = FormatType(typeId, metaDataBuffer[0..4]);
var attr1 = BinaryPrimitives.ReadUInt32LittleEndian(metaDataBuffer[4..8]);
var attr2 = BinaryPrimitives.ReadUInt32LittleEndian(metaDataBuffer[8..12]);
var fileLength = BinaryPrimitives.ReadInt32LittleEndian(metaDataBuffer[12..16]);
var attr3 = BinaryPrimitives.ReadUInt32LittleEndian(metaDataBuffer[16..20]);
var name = ReadNResName(metaDataBuffer[20..56]);
var offset = BinaryPrimitives.ReadInt32LittleEndian(metaDataBuffer[56..60]);
var sortIndex = BinaryPrimitives.ReadInt32LittleEndian(metaDataBuffer[60..64]);
for (int j = 0; j < 4; j++)
if (offset < 16 || fileLength < 0 || (long)offset + fileLength > directoryOffset)
{
if (!char.IsLetterOrDigit((char)metaDataBuffer[j]))
{
type += metaDataBuffer[j]
.ToString("X2") + " ";
}
else
{
type += (char)metaDataBuffer[j];
}
return new NResParseResult(null, $"Запись '{name}' выходит за границы data region");
}
var type2 = BinaryPrimitives.ReadUInt32LittleEndian(metaDataBuffer.Slice(4));
type = type.Trim();
elements.Add(
new ListMetadataItem(
FileType: type,
ElementCount: type2,
Magic1: BinaryPrimitives.ReadInt32LittleEndian(metaDataBuffer[8..12]),
FileLength: BinaryPrimitives.ReadInt32LittleEndian(metaDataBuffer[12..16]),
ElementSize: BinaryPrimitives.ReadInt32LittleEndian(metaDataBuffer[16..20]),
FileName: Encoding.ASCII.GetString(metaDataBuffer[20..40]).TrimEnd('\0'),
Magic3: BinaryPrimitives.ReadInt32LittleEndian(metaDataBuffer[40..44]),
Magic4: BinaryPrimitives.ReadInt32LittleEndian(metaDataBuffer[44..48]),
Magic5: BinaryPrimitives.ReadInt32LittleEndian(metaDataBuffer[48..52]),
Magic6: BinaryPrimitives.ReadInt32LittleEndian(metaDataBuffer[52..56]),
OffsetInFile: BinaryPrimitives.ReadInt32LittleEndian(metaDataBuffer[56..60]),
Index: BinaryPrimitives.ReadInt32LittleEndian(metaDataBuffer[60..64])
)
);
elements.Add(new ListMetadataItem(
typeId,
type,
attr1,
unchecked((int)attr2),
fileLength,
unchecked((int)attr3),
name,
offset,
sortIndex,
i));
metaDataBuffer.Clear();
}
@@ -99,4 +107,34 @@ public static class NResParser
)
);
}
}
private static string FormatType(uint typeId, ReadOnlySpan<byte> bytes)
{
bool formattable = true;
foreach (var b in bytes)
{
if (!char.IsLetterOrDigit((char)b))
{
formattable = false;
break;
}
}
if (!formattable)
{
return Encoding.ASCII.GetString(bytes);
}
return string.Join(" ", bytes.ToArray().Select(x => x.ToString("X2")));
}
private static string ReadNResName(ReadOnlySpan<byte> raw)
{
var nul = raw.IndexOf((byte)0);
if (nul < 0)
{
return Encoding.ASCII.GetString(raw);
}
return Encoding.ASCII.GetString(raw[..nul]);
}
}