// Initializes the name, mode and type flag of a PAX extended attributes entry.
private void WriteAsPaxExtendedAttributesShared(bool isGea, int globalExtendedAttributesEntryNumber)
{
Debug.Assert(isGea && globalExtendedAttributesEntryNumber >= 0 || !isGea && globalExtendedAttributesEntryNumber < 0);
_name = isGea ?
GenerateGlobalExtendedAttributeName(globalExtendedAttributesEntryNumber) :
GenerateExtendedAttributeName();
_mode = TarHelpers.GetDefaultMode(_typeFlag);
_typeFlag = isGea ? TarEntryType.GlobalExtendedAttributes : TarEntryType.ExtendedAttributes;
}
// Constructor called when the user creates a TarEntry instance from scratch.
internal TarEntry(TarEntryType entryType, string entryName, TarEntryFormat format, bool isGea)
{
ArgumentException.ThrowIfNullOrEmpty(entryName);
Debug.Assert(!isGea || entryType is TarEntryType.GlobalExtendedAttributes);
if (!isGea)
{
TarHelpers.ThrowIfEntryTypeNotSupported(entryType, format);
}
// Default values for fields shared by all supported formats
_header = new TarHeader(format, entryName, TarHelpers.GetDefaultMode(entryType), DateTimeOffset.UtcNow, entryType);
}
// Constructs a GNU metadata header with default values for the specified entry type.
private static TarHeader GetDefaultGnuLongMetadataHeader(int longTextLength, TarEntryType entryType)
{
Debug.Assert((entryType is TarEntryType.LongPath && longTextLength > FieldLengths.Name) ||
(entryType is TarEntryType.LongLink && longTextLength > FieldLengths.LinkName));
TarHeader longMetadataHeader = new(TarEntryFormat.Gnu);
longMetadataHeader._name = GnuLongMetadataName; // Same name for both longpath or longlink
longMetadataHeader._mode = TarHelpers.GetDefaultMode(entryType);
longMetadataHeader._uid = 0;
longMetadataHeader._gid = 0;
longMetadataHeader._mTime = DateTimeOffset.MinValue; // 0
longMetadataHeader._typeFlag = entryType;
longMetadataHeader._dataStream = new MemoryStream();
return(longMetadataHeader);
}
