internal static ZipIOLocalFileHeader ParseRecord(BinaryReader reader, Encoding encoding)
{
ZipIOLocalFileHeader header = new ZipIOLocalFileHeader();
header._signature = reader.ReadUInt32();
header._versionNeededToExtract = reader.ReadUInt16();
header._generalPurposeBitFlag = reader.ReadUInt16();
header._compressionMethod = reader.ReadUInt16();
header._lastModFileDateTime = reader.ReadUInt32();
header._crc32 = reader.ReadUInt32();
header._compressedSize = reader.ReadUInt32();
header._uncompressedSize = reader.ReadUInt32();
header._fileNameLength = reader.ReadUInt16();
header._extraFieldLength = reader.ReadUInt16();
header._fileName = reader.ReadBytes(header._fileNameLength);
ZipIOZip64ExtraFieldUsage none = ZipIOZip64ExtraFieldUsage.None;
if (header._versionNeededToExtract >= 0x2d)
{
if (header._compressedSize == uint.MaxValue)
{
none |= ZipIOZip64ExtraFieldUsage.CompressedSize;
}
if (header._uncompressedSize == uint.MaxValue)
{
none |= ZipIOZip64ExtraFieldUsage.UncompressedSize;
}
}
header._extraField = ZipIOExtraField.ParseRecord(reader, none, header._extraFieldLength);
header._stringFileName = ZipIOBlockManager.ValidateNormalizeFileName(encoding.GetString(header._fileName));
header.Validate();
return(header);
}
internal static ZipIOCentralDirectoryFileHeader ParseRecord(BinaryReader reader, Encoding encoding)
{
ZipIOCentralDirectoryFileHeader header = new ZipIOCentralDirectoryFileHeader(encoding);
header._signature = reader.ReadUInt32();
header._versionMadeBy = reader.ReadUInt16();
header._versionNeededToExtract = reader.ReadUInt16();
header._generalPurposeBitFlag = reader.ReadUInt16();
header._compressionMethod = reader.ReadUInt16();
header._lastModFileDateTime = reader.ReadUInt32();
header._crc32 = reader.ReadUInt32();
header._compressedSize = reader.ReadUInt32();
header._uncompressedSize = reader.ReadUInt32();
header._fileNameLength = reader.ReadUInt16();
header._extraFieldLength = reader.ReadUInt16();
header._fileCommentLength = reader.ReadUInt16();
header._diskNumberStart = reader.ReadUInt16();
header._internalFileAttributes = reader.ReadUInt16();
header._externalFileAttributes = reader.ReadUInt32();
header._relativeOffsetOfLocalHeader = reader.ReadUInt32();
header._fileName = reader.ReadBytes(header._fileNameLength);
ZipIOZip64ExtraFieldUsage none = ZipIOZip64ExtraFieldUsage.None;
if (header._versionNeededToExtract >= 0x2d)
{
if (header._compressedSize == uint.MaxValue)
{
none |= ZipIOZip64ExtraFieldUsage.CompressedSize;
}
if (header._uncompressedSize == uint.MaxValue)
{
none |= ZipIOZip64ExtraFieldUsage.UncompressedSize;
}
if (header._relativeOffsetOfLocalHeader == uint.MaxValue)
{
none |= ZipIOZip64ExtraFieldUsage.OffsetOfLocalHeader;
}
if (header._diskNumberStart == 0xffff)
{
none |= ZipIOZip64ExtraFieldUsage.DiskNumber;
}
}
header._extraField = ZipIOExtraField.ParseRecord(reader, none, header._extraFieldLength);
header._fileComment = reader.ReadBytes(header._fileCommentLength);
header._stringFileName = ZipIOBlockManager.ValidateNormalizeFileName(encoding.GetString(header._fileName));
header.Validate();
return(header);
}