/// <summary>
/// Reads header part 7 from an input stream.
/// </summary>
/// <param name="stream">The stream to read from.</param>
/// <param name="offset">The offset to the header part from the beginning of the stream.</param>
/// <param name="numEntries">Number of entries.</param>
/// <param name="p">Progress info.</param>
/// <returns>The loaded header part.</returns>
internal async Task <NefsHeaderPart7> ReadHeaderPart7Async(Stream stream, uint offset, uint numEntries, NefsProgress p)
{
var entries = new List <NefsHeaderPart7Entry>();
var size = numEntries * NefsHeaderPart7Entry.Size;
// Validate inputs
if (!this.ValidateHeaderPartStream(stream, offset, (uint)size, "7"))
{
return(new NefsHeaderPart7(entries));
}
// Get entries in part 7
var entryOffset = offset;
for (var i = 0; i < numEntries; ++i)
{
using (p.BeginTask(1.0f / numEntries))
{
// Read the entry data
var entry = new NefsHeaderPart7Entry();
await FileData.ReadDataAsync(stream, entryOffset, entry, NefsVersion.Version200, p);
entryOffset += NefsHeaderPart7Entry.Size;
entries.Add(entry);
}
}
return(new NefsHeaderPart7(entries));
}
/// <summary>
/// Reads header part 7 from an input stream.
/// </summary>
/// <param name="stream">The stream to read from.</param>
/// <param name="offset">The offset to the header part from the beginning of the stream.</param>
/// <param name="size">The size of the header part.</param>
/// <param name="p">Progress info.</param>
/// <returns>The loaded header part.</returns>
internal async Task <NefsHeaderPart7> ReadHeaderPart7Async(Stream stream, uint offset, uint size, NefsProgress p)
{
var entries = new List <NefsHeaderPart7Entry>();
var ids = new HashSet <NefsItemId>();
// Validate inputs
if (!this.ValidateHeaderPartStream(stream, offset, size, "7"))
{
return(new NefsHeaderPart7(entries));
}
// Get entries in part 7
var numEntries = size / NefsHeaderPart7Entry.Size;
var entryOffset = offset;
for (var i = 0; i < numEntries; ++i)
{
using (p.BeginTask(1.0f / numEntries))
{
var entry = new NefsHeaderPart7Entry();
await FileData.ReadDataAsync(stream, entryOffset, entry, p);
// Check for duplicate item ids
var id = new NefsItemId(entry.Id.Value);
if (ids.Contains(id))
{
Log.LogWarning($"Found duplicate item id in part 7: {id.Value}");
}
ids.Add(id);
entries.Add(entry);
entryOffset += NefsHeaderPart7Entry.Size;
}
}
return(new NefsHeaderPart7(entries));
}
