public void MajorMemoryFrameLocateSubrecord()
{
var majorFrame = new MajorRecordFrame(GameConstants.Oblivion, _majorBytes);
majorFrame.LocateSubrecord(RecordTypes.DATA, out var loc);
Assert.Equal(DataPos, loc);
}
private void ProcessLeveledItemDataFields(
MajorRecordFrame majorFrame,
long fileOffset)
{
if (!majorFrame.TryLocateSubrecordFrame(RecordTypes.DATA, out var dataFrame, out var dataIndex))
{
return;
}
int amount = 0;
var dataFlag = dataFrame.AsUInt8();
if (dataFlag == 1)
{
var lvld = majorFrame.LocateSubrecord(RecordTypes.LVLD, out var index);
index += lvld.HeaderLength + 1;
this._instructions.SetAddition(
loc: index + fileOffset,
addition: new byte[]
{
(byte)'L',
(byte)'V',
(byte)'L',
(byte)'F',
0x1,
0x0,
0x2
});
amount += 7;
}
else
{
var existingLen = dataFrame.ContentLength;
byte[] lenData = new byte[2];
using (var writer = new MutagenWriter(new MemoryStream(lenData), this.GameRelease))
{
writer.Write((ushort)(existingLen - 7));
}
this._instructions.SetSubstitution(
loc: fileOffset + Plugins.Internals.Constants.HeaderLength,
sub: lenData);
}
// Remove DATA
var dataRange = new RangeInt64(dataIndex + fileOffset, dataIndex + fileOffset + 7 - 1);
this._instructions.SetRemove(dataRange);
amount -= (int)dataRange.Width;
ProcessLengths(
majorFrame,
amount,
fileOffset);
}
/// <summary>
/// Iterates a MajorRecordFrame's subrecords and locates the first occurance of the desired type
/// </summary>
/// <param name="majorFrame">Frame to read from</param>
/// <param name="type">Type to search for</param>
/// <exception cref="System.ArgumentException">Thrown if target type cannot be found.</exception>
/// <returns>First encountered SubrecordHeader with the given type</returns>
public static SubrecordHeader LocateSubrecord(this MajorRecordFrame majorFrame, RecordType type)
{
return(majorFrame.LocateSubrecord(type, loc: out var _));
}