structs.go

Documentation: github.com/sassoftware/relic/lib/zipslicer

     1  //
     2  // Copyright (c) SAS Institute Inc.
     3  //
     4  // Licensed under the Apache License, Version 2.0 (the "License");
     5  // you may not use this file except in compliance with the License.
     6  // You may obtain a copy of the License at
     7  //
     8  //     http://www.apache.org/licenses/LICENSE-2.0
     9  //
    10  // Unless required by applicable law or agreed to in writing, software
    11  // distributed under the License is distributed on an "AS IS" BASIS,
    12  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  // See the License for the specific language governing permissions and
    14  // limitations under the License.
    15  //
    16  
    17  package zipslicer
    18  
    19  const (
    20  	fileHeaderSignature      = 0x04034b50
    21  	directoryHeaderSignature = 0x02014b50
    22  	directoryEndSignature    = 0x06054b50
    23  	directory64LocSignature  = 0x07064b50
    24  	directory64EndSignature  = 0x06064b50
    25  	dataDescriptorSignature  = 0x08074b50
    26  	fileHeaderLen            = 30
    27  	directoryHeaderLen       = 46
    28  	directoryEndLen          = 22
    29  	directory64LocLen        = 20
    30  	directory64EndLen        = 56
    31  	dataDescriptorLen        = 16
    32  	dataDescriptor64Len      = 24
    33  	zip64ExtraID             = 0x0001
    34  	zip64ExtraLen            = 24
    35  
    36  	zip20 = 20
    37  	zip45 = 45
    38  
    39  	uint32Max = 0xffffffff
    40  	uint16Max = 0xffff
    41  )
    42  
    43  type zipCentralDir struct {
    44  	Signature        uint32
    45  	CreatorVersion   uint16
    46  	ReaderVersion    uint16
    47  	Flags            uint16
    48  	Method           uint16
    49  	ModifiedTime     uint16
    50  	ModifiedDate     uint16
    51  	CRC32            uint32
    52  	CompressedSize   uint32
    53  	UncompressedSize uint32
    54  	FilenameLen      uint16
    55  	ExtraLen         uint16
    56  	CommentLen       uint16
    57  	StartDisk        uint16
    58  	InternalAttrs    uint16
    59  	ExternalAttrs    uint32
    60  	Offset           uint32
    61  }
    62  
    63  type zip64End struct {
    64  	Signature      uint32
    65  	RecordSize     uint64
    66  	CreatorVersion uint16
    67  	ReaderVersion  uint16
    68  	Disk           uint32
    69  	FirstDisk      uint32
    70  	DiskCDCount    uint64
    71  	TotalCDCount   uint64
    72  	CDSize         uint64
    73  	CDOffset       uint64
    74  }
    75  
    76  type zip64Loc struct {
    77  	Signature uint32
    78  	Disk      uint32
    79  	Offset    uint64
    80  	DiskCount uint32
    81  }
    82  type zipEndRecord struct {
    83  	Signature     uint32
    84  	DiskNumber    uint16
    85  	DiskCD        uint16
    86  	DiskCDCount   uint16
    87  	TotalCDCount  uint16
    88  	CDSize        uint32
    89  	CDOffset      uint32
    90  	CommentLength uint16
    91  }
    92  
    93  type zipLocalHeader struct {
    94  	Signature        uint32
    95  	ReaderVersion    uint16
    96  	Flags            uint16
    97  	Method           uint16
    98  	ModifiedTime     uint16
    99  	ModifiedDate     uint16
   100  	CRC32            uint32
   101  	CompressedSize   uint32
   102  	UncompressedSize uint32
   103  	FilenameLen      uint16
   104  	ExtraLen         uint16
   105  }
   106  
   107  type zip64Extra struct {
   108  	Signature        uint16
   109  	RecordSize       uint16
   110  	UncompressedSize uint64
   111  	CompressedSize   uint64
   112  	Offset           uint64
   113  }
   114  
   115  type zipDataDesc struct {
   116  	Signature        uint32
   117  	CRC32            uint32
   118  	CompressedSize   uint32
   119  	UncompressedSize uint32
   120  }
   121  
   122  type zipDataDesc64 struct {
   123  	Signature        uint32
   124  	CRC32            uint32
   125  	CompressedSize   uint64
   126  	UncompressedSize uint64
   127  }
   128
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