Esempio n. 1
0
        public static EOCD Parse(Byte[] bytes)
        {
            var pos = FindEOCD(bytes);

            using (var ms = new MemoryStream(bytes, pos, bytes.Length - pos, false))
                using (var r = new BinaryReader(ms))
                {
                    var sig = r.ReadInt32();
                    if (sig != 0x06054b50)
                    {
                        throw new ZipParseException("invalid eocd signature: " + sig);
                    }

                    var eocd = new EOCD
                    {
                        NumberOfThisDisk = r.ReadUInt16(),
                        DiskWhereCentralDirectoryStarts           = r.ReadUInt16(),
                        NumberOfCentralDirectoryRecordsOnThisDisk = r.ReadUInt16(),
                        TotalNumberOfCentralDirectoryRecords      = r.ReadUInt16(),
                        SizeOfCentralDirectoryBytes     = r.ReadInt32(),
                        OffsetOfStartOfCentralDirectory = r.ReadInt32(),
                    };

                    var commentLength = r.ReadUInt16();
                    var commentBytes  = r.ReadBytes(commentLength);
                    eocd.Comment = Encoding.ASCII.GetString(commentBytes);

                    return(eocd);
                }
        }
Esempio n. 2
0
        public static ZipArchiveStorage Parse(byte[] bytes)
        {
            var eocd    = EOCD.Parse(bytes);
            var archive = new ZipArchiveStorage();

            var pos = eocd.OffsetOfStartOfCentralDirectory;

            for (int i = 0; i < eocd.NumberOfCentralDirectoryRecordsOnThisDisk; ++i)
            {
                var file = new CentralDirectoryFileHeader(bytes, pos);
                archive.Entries.Add(file);
                pos += file.Length;
            }

            return(archive);
        }