/// <summary>
/// Saves this instance, aka overwrites the file header.
/// </summary>
public void Save()
{
var head = new FileHeader
{
Signature = PackCommon.Header,
Revision = (uint)Revision,
EntryCount = Count,
Path = Root,
Ft1 = Created.ToFileTime(),
Ft2 = Modified.ToFileTime()
};
var pkgHead = new PackageHeader
{
EntryCount = Count,
InfoHeaderSize = 0,
DataSectionSize = (uint)(_source.Length - _dataStart),
BlankSize = 0,
Zero = new byte[16]
};
var infos = new List <Tuple <byte[], PackageItemInfo> >();
foreach (var e in _entries.Values)
{
var info = new PackageItemInfo
{
CompressedSize = e.SizeInPack,
DecompressedSize = e.DecompressedSize,
IsCompressed = e.IsCompressed,
Offset = (uint)e.DataOffset,
Seed = e.CryptoSeed,
CreationTime = e.CreatedDate.ToFileTime(),
CreationTime2 = e.CreatedDate.ToFileTime(),
LastAccessTime = e.AccessDate.ToFileTime(),
ModifiedTime = e.ModifiedDate.ToFileTime(),
ModifiedTime2 = e.ModifiedDate.ToFileTime(),
};
var bytes = PackCommon.EncodeName(e.Name.PadRight(e.MaxNameLength, '\0'));
infos.Add(Tuple.Create(bytes, info));
pkgHead.InfoHeaderSize += bytes.Length + StructUtil.SizeOf <PackageItemInfo>();
}
pkgHead.BlankSize = (int)(_dataStart -
(StructUtil.SizeOf <FileHeader>() + StructUtil.SizeOf <PackageHeader>() +
pkgHead.InfoHeaderSize));
pkgHead.InfoHeaderSize += pkgHead.BlankSize;
_source.Position = 0;
head.WriteToStream(_source);
pkgHead.WriteToStream(_source);
foreach (var i in infos)
{
_source.Write(i.Item1, 0, i.Item1.Length);
i.Item2.WriteToStream(_source);
}
}
/// <summary>
/// Outputs the pack file to the given stream.
/// </summary>
/// <param name="dst">The DST.</param>
public void SaveTo(Stream dst)
{
var head = new FileHeader
{
Signature = PackCommon.Header,
Revision = Revision,
EntryCount = _entries.Count,
Path = Root,
Ft1 = DateTime.UtcNow.ToFileTimeUtc(),
Ft2 = DateTime.UtcNow.ToFileTimeUtc()
};
var pkgHead = new PackageHeader
{
EntryCount = _entries.Count,
InfoHeaderSize = 0,
DataSectionSize = (uint)_bodyStream.Position,
BlankSize = 0,
Zero = new byte[16]
};
var infos = new List <Tuple <byte[], PackageItemInfo> >();
foreach (var e in _entries)
{
var info = new PackageItemInfo()
{
CompressedSize = e.SizeInPack,
DecompressedSize = e.DecompressedSize,
IsCompressed = e.IsCompressed,
Offset = (uint)e.DataOffset,
Seed = e.CryptoSeed,
CreationTime = e.CreatedDate.ToFileTime(),
CreationTime2 = e.CreatedDate.ToFileTime(),
ModifiedTime = e.ModifiedDate.ToFileTime(),
ModifiedTime2 = e.ModifiedDate.ToFileTime(),
LastAccessTime = e.AccessDate.ToFileTime()
};
var bytes = PackCommon.EncodeName(e.Name);
infos.Add(Tuple.Create(bytes, info));
pkgHead.InfoHeaderSize += bytes.Length + StructUtil.SizeOf <PackageItemInfo>();
}
head.WriteToStream(dst);
pkgHead.WriteToStream(dst);
foreach (var i in infos)
{
dst.Write(i.Item1, 0, i.Item1.Length);
i.Item2.WriteToStream(dst);
}
_bodyStream.Position = 0;
_bodyStream.CopyTo(dst);
}
/// <summary>
/// Initializes a new instance of the <see cref="PackEntry"/> class.
/// </summary>
/// <param name="info">The information.</param>
/// <param name="name">The name.</param>
/// <param name="maxNameLength">Maximum length of the name.</param>
/// <exception cref="System.ArgumentOutOfRangeException">maxNameLength</exception>
internal PackEntry(PackageItemInfo info, string name, int maxNameLength)
: this(name, info.Seed, info.IsCompressed, info.CompressedSize, info.DecompressedSize, info.Offset,
DateTime.FromFileTime(info.CreationTime), DateTime.FromFileTime(info.ModifiedTime2), DateTime.FromFileTime(info.LastAccessTime))
{
if (name.Length > maxNameLength)
{
throw new ArgumentOutOfRangeException("maxNameLength");
}
MaxNameLength = maxNameLength;
}
private void ModifyManifest(ItemId id, int change)
{
if (change == 0)
{
return;
}
if (!_ItemManifest.TryGetValue(id, out var info))
{
info = PackageItemInfo.Take();
info.Count = change;
_ItemManifest.Add(id, info);
return;
}
info.Count += change;
if (info.Count == 0)
{
_ItemManifest.Remove(id);
}
}
