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Support for writing zip64 headers in the unused code

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This commit is contained in:
Kenneth Skovhede
2017-03-09 23:18:57 +01:00
parent b3a4fed8be
commit cd3cbd2b32
2 changed files with 57 additions and 10 deletions
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32
src/SharpCompress/Common/Zip/Headers/DirectoryEntryHeader.cs
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@@ -63,6 +63,10 @@ namespace SharpCompress.Common.Zip.Headers
internal override void Write(BinaryWriter writer)
{
var zip64 = CompressedSize >= uint.MaxValue || UncompressedSize >= uint.MaxValue || RelativeOffsetOfEntryHeader >= uint.MaxValue;
if (zip64)
Version = (ushort)(Version > 45 ? Version : 45);
writer.Write(Version);
writer.Write(VersionNeededToExtract);
writer.Write((ushort)Flags);
@@ -70,24 +74,40 @@ namespace SharpCompress.Common.Zip.Headers
writer.Write(LastModifiedTime);
writer.Write(LastModifiedDate);
writer.Write(Crc);
writer.Write((uint)CompressedSize);
writer.Write((uint)UncompressedSize);
writer.Write(zip64 ? uint.MaxValue : CompressedSize);
writer.Write(zip64 ? uint.MaxValue : UncompressedSize);
byte[] nameBytes = EncodeString(Name);
writer.Write((ushort)nameBytes.Length);
//writer.Write((ushort)Extra.Length);
writer.Write((ushort)0);
if (zip64)
{
writer.Write((ushort)(2 + 2 + 8 + 8 + 8 + 4));
}
else
{
//writer.Write((ushort)Extra.Length);
writer.Write((ushort)0);
}
writer.Write((ushort)Comment.Length);
writer.Write(DiskNumberStart);
writer.Write(InternalFileAttributes);
writer.Write(ExternalFileAttributes);
writer.Write(RelativeOffsetOfEntryHeader);
writer.Write(zip64 ? uint.MaxValue : RelativeOffsetOfEntryHeader);
writer.Write(nameBytes);
// writer.Write(Extra);
if (zip64)
{
writer.Write((ushort)0x0001);
writer.Write((ushort)((8 + 8 + 8 + 4)));
writer.Write((ulong)UncompressedSize);
writer.Write((ulong)CompressedSize);
writer.Write((ulong)RelativeOffsetOfEntryHeader);
writer.Write((uint)0); // VolumeNumber = 0
}
writer.Write(Comment);
}

35
src/SharpCompress/Common/Zip/Headers/LocalEntryHeader.cs
View File

@@ -49,25 +49,52 @@ namespace SharpCompress.Common.Zip.Headers
internal override void Write(BinaryWriter writer)
{
writer.Write(Version);
if (IsZip64)
Version = (ushort)(Version > 45 ? Version : 45);
writer.Write(Version);
writer.Write((ushort)Flags);
writer.Write((ushort)CompressionMethod);
writer.Write(LastModifiedTime);
writer.Write(LastModifiedDate);
writer.Write(Crc);
writer.Write((uint)CompressedSize);
writer.Write((uint)UncompressedSize);
if (IsZip64)
{
writer.Write(uint.MaxValue);
writer.Write(uint.MaxValue);
}
else
{
writer.Write(CompressedSize);
writer.Write(UncompressedSize);
}
byte[] nameBytes = EncodeString(Name);
writer.Write((ushort)nameBytes.Length);
writer.Write((ushort)0);
if (IsZip64)
{
writer.Write((ushort)(2 + 2 + (2 * 8)));
}
else
{
writer.Write((ushort)0);
}
//if (Extra != null)
//{
// writer.Write(Extra);
//}
writer.Write(nameBytes);
if (IsZip64)
{
writer.Write((ushort)0x0001);
writer.Write((ushort)(2 * 8));
writer.Write((ulong)CompressedSize);
writer.Write((ulong)UncompressedSize);
}
}
internal ushort Version { get; private set; }