ICSharpCode.SharpZipLib.Zip.ZipConstants Class Reference

This class contains constants used for Zip format files. More...

Static Public Member Functions
static string	ConvertToString (byte[] data, int count)
	Convert a portion of a byte array to a string.
static string	ConvertToString (byte[] data)
	Convert a byte array to string.
static string	ConvertToStringExt (int flags, byte[] data, int count)
	Convert a byte array to string.
static string	ConvertToStringExt (int flags, byte[] data)
	Convert a byte array to string.
static byte[]	ConvertToArray (string str)
	Convert a string to a byte array.
static byte[]	ConvertToArray (int flags, string str)
	Convert a string to a byte array.

Static Public Attributes
const int	VersionMadeBy = 51
	The version made by field for entries in the central header when created by this library.
const int	VERSION_MADE_BY = 51
	The version made by field for entries in the central header when created by this library.
const int	VersionStrongEncryption = 50
	The minimum version required to support strong encryption.
const int	VERSION_STRONG_ENCRYPTION = 50
	The minimum version required to support strong encryption.
const int	VERSION_AES = 51
	Version indicating AES encryption.
const int	VersionZip64 = 45
	The version required for Zip64 extensions (4.5 or higher)
const int	LocalHeaderBaseSize = 30
	Size of local entry header (excluding variable length fields at end)
const int	LOCHDR = 30
	Size of local entry header (excluding variable length fields at end)
const int	Zip64DataDescriptorSize = 24
	Size of Zip64 data descriptor.
const int	DataDescriptorSize = 16
	Size of data descriptor.
const int	EXTHDR = 16
	Size of data descriptor.
const int	CentralHeaderBaseSize = 46
	Size of central header entry (excluding variable fields)
const int	CENHDR = 46
	Size of central header entry.
const int	EndOfCentralRecordBaseSize = 22
	Size of end of central record (excluding variable fields)
const int	ENDHDR = 22
	Size of end of central record (excluding variable fields)
const int	CryptoHeaderSize = 12
	Size of 'classic' cryptographic header stored before any entry data.
const int	CRYPTO_HEADER_SIZE = 12
	Size of cryptographic header stored before entry data.
const int	LocalHeaderSignature = 'P' | ('K' << 8) | (3 << 16) | (4 << 24)
	Signature for local entry header.
const int	LOCSIG = 'P' | ('K' << 8) | (3 << 16) | (4 << 24)
	Signature for local entry header.
const int	SpanningSignature = 'P' | ('K' << 8) | (7 << 16) | (8 << 24)
	Signature for spanning entry.
const int	SPANNINGSIG = 'P' | ('K' << 8) | (7 << 16) | (8 << 24)
	Signature for spanning entry.
const int	SpanningTempSignature = 'P' | ('K' << 8) | ('0' << 16) | ('0' << 24)
	Signature for temporary spanning entry.
const int	SPANTEMPSIG = 'P' | ('K' << 8) | ('0' << 16) | ('0' << 24)
	Signature for temporary spanning entry.
const int	DataDescriptorSignature = 'P' | ('K' << 8) | (7 << 16) | (8 << 24)
	Signature for data descriptor.
const int	EXTSIG = 'P' | ('K' << 8) | (7 << 16) | (8 << 24)
	Signature for data descriptor.
const int	CENSIG = 'P' | ('K' << 8) | (1 << 16) | (2 << 24)
	Signature for central header.
const int	CentralHeaderSignature = 'P' | ('K' << 8) | (1 << 16) | (2 << 24)
	Signature for central header.
const int	Zip64CentralFileHeaderSignature = 'P' | ('K' << 8) | (6 << 16) | (6 << 24)
	Signature for Zip64 central file header.
const int	CENSIG64 = 'P' | ('K' << 8) | (6 << 16) | (6 << 24)
	Signature for Zip64 central file header.
const int	Zip64CentralDirLocatorSignature = 'P' | ('K' << 8) | (6 << 16) | (7 << 24)
	Signature for Zip64 central directory locator.
const int	ArchiveExtraDataSignature = 'P' | ('K' << 8) | (6 << 16) | (7 << 24)
	Signature for archive extra data signature (were headers are encrypted).
const int	CentralHeaderDigitalSignature = 'P' | ('K' << 8) | (5 << 16) | (5 << 24)
	Central header digitial signature.
const int	CENDIGITALSIG = 'P' | ('K' << 8) | (5 << 16) | (5 << 24)
	Central header digitial signature.
const int	EndOfCentralDirectorySignature = 'P' | ('K' << 8) | (5 << 16) | (6 << 24)
	End of central directory record signature.
const int	ENDSIG = 'P' | ('K' << 8) | (5 << 16) | (6 << 24)
	End of central directory record signature.

Properties
static int	DefaultCodePage [get, set]
	Default encoding used for string conversion. 0 gives the default system OEM code page. Dont use unicode encodings if you want to be Zip compatible! Using the default code page isnt the full solution neccessarily there are many variable factors, codepage 850 is often a good choice for European users, however be careful about compatability.

Private Member Functions
	ZipConstants ()
	Initialise default instance of ZipConstants

Static Private Attributes
static int	defaultCodePage = Thread.CurrentThread.CurrentCulture.TextInfo.OEMCodePage

Detailed Description

This class contains constants used for Zip format files.

Constructor & Destructor Documentation

ZipConstants()

ICSharpCode.SharpZipLib.Zip.ZipConstants.ZipConstants ( )

private

Initialise default instance of ZipConstants

Private to prevent instances being created.

Member Function Documentation

ConvertToArray() [1/2]

byte[] ICSharpCode.SharpZipLib.Zip.ZipConstants.ConvertToArray ( int flags, string str )

static

Convert a string to a byte array.

Parameters

flags	The applicable general purpose bits flags
str	String to convert to an array

Returns

Converted array

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ConvertToArray() [2/2]

byte[] ICSharpCode.SharpZipLib.Zip.ZipConstants.ConvertToArray ( string str )

static

Convert a string to a byte array.

Parameters

str	String to convert to an array

Returns

Converted array

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ConvertToString() [1/2]

string ICSharpCode.SharpZipLib.Zip.ZipConstants.ConvertToString ( byte[] data )

static

Convert a byte array to string.

Parameters

data	Byte array to convert

Returns

data dataconverted to a string

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ConvertToString() [2/2]

string ICSharpCode.SharpZipLib.Zip.ZipConstants.ConvertToString ( byte[] data, int count )

static

Convert a portion of a byte array to a string.

Parameters

data	Data to convert to string
count	Number of bytes to convert starting from index 0

Returns

data[0]..data[length - 1] converted to a string

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ConvertToStringExt() [1/2]

string ICSharpCode.SharpZipLib.Zip.ZipConstants.ConvertToStringExt ( int flags, byte[] data )

static

Convert a byte array to string.

Parameters

data	Byte array to convert
flags	The applicable general purpose bits flags

Returns

data dataconverted to a string

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ConvertToStringExt() [2/2]

string ICSharpCode.SharpZipLib.Zip.ZipConstants.ConvertToStringExt ( int flags, byte[] data, int count )

static

Convert a byte array to string.

Parameters

flags	The applicable general purpose bits flags
data	Byte array to convert
count	The number of bytes to convert.

Returns

data dataconverted to a string

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Member Data Documentation

ArchiveExtraDataSignature

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.ArchiveExtraDataSignature = 'P' | ('K' << 8) | (6 << 16) | (7 << 24)

static

Signature for archive extra data signature (were headers are encrypted).

CENDIGITALSIG

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.CENDIGITALSIG = 'P' | ('K' << 8) | (5 << 16) | (5 << 24)

static

Central header digitial signature.

CENHDR

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.CENHDR = 46

static

Size of central header entry.

CENSIG

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.CENSIG = 'P' | ('K' << 8) | (1 << 16) | (2 << 24)

static

Signature for central header.

CENSIG64

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.CENSIG64 = 'P' | ('K' << 8) | (6 << 16) | (6 << 24)

static

Signature for Zip64 central file header.

CentralHeaderBaseSize

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.CentralHeaderBaseSize = 46

static

Size of central header entry (excluding variable fields)

CentralHeaderDigitalSignature

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.CentralHeaderDigitalSignature = 'P' | ('K' << 8) | (5 << 16) | (5 << 24)

static

Central header digitial signature.

CentralHeaderSignature

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.CentralHeaderSignature = 'P' | ('K' << 8) | (1 << 16) | (2 << 24)

static

Signature for central header.

CRYPTO_HEADER_SIZE

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.CRYPTO_HEADER_SIZE = 12

static

Size of cryptographic header stored before entry data.

CryptoHeaderSize

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.CryptoHeaderSize = 12

static

Size of 'classic' cryptographic header stored before any entry data.

DataDescriptorSignature

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.DataDescriptorSignature = 'P' | ('K' << 8) | (7 << 16) | (8 << 24)

static

Signature for data descriptor.

This is only used where the length, Crc, or compressed size isnt known when the entry is created and the output stream doesnt support seeking. The local entry cannot be 'patched' with the correct values in this case so the values are recorded after the data prefixed by this header, as well as in the central directory.

DataDescriptorSize

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.DataDescriptorSize = 16

static

Size of data descriptor.

defaultCodePage

int ICSharpCode.SharpZipLib.Zip.ZipConstants.defaultCodePage = Thread.CurrentThread.CurrentCulture.TextInfo.OEMCodePage

staticprivate

ENDHDR

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.ENDHDR = 22

static

Size of end of central record (excluding variable fields)

EndOfCentralDirectorySignature

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.EndOfCentralDirectorySignature = 'P' | ('K' << 8) | (5 << 16) | (6 << 24)

static

End of central directory record signature.

EndOfCentralRecordBaseSize

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.EndOfCentralRecordBaseSize = 22

static

Size of end of central record (excluding variable fields)

ENDSIG

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.ENDSIG = 'P' | ('K' << 8) | (5 << 16) | (6 << 24)

static

End of central directory record signature.

EXTHDR

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.EXTHDR = 16

static

Size of data descriptor.

EXTSIG

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.EXTSIG = 'P' | ('K' << 8) | (7 << 16) | (8 << 24)

static

Signature for data descriptor.

This is only used where the length, Crc, or compressed size isnt known when the entry is created and the output stream doesnt support seeking. The local entry cannot be 'patched' with the correct values in this case so the values are recorded after the data prefixed by this header, as well as in the central directory.

LocalHeaderBaseSize

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.LocalHeaderBaseSize = 30

static

Size of local entry header (excluding variable length fields at end)

LocalHeaderSignature

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.LocalHeaderSignature = 'P' | ('K' << 8) | (3 << 16) | (4 << 24)

static

Signature for local entry header.

LOCHDR

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.LOCHDR = 30

static

Size of local entry header (excluding variable length fields at end)

LOCSIG

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.LOCSIG = 'P' | ('K' << 8) | (3 << 16) | (4 << 24)

static

Signature for local entry header.

SPANNINGSIG

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.SPANNINGSIG = 'P' | ('K' << 8) | (7 << 16) | (8 << 24)

static

Signature for spanning entry.

SpanningSignature

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.SpanningSignature = 'P' | ('K' << 8) | (7 << 16) | (8 << 24)

static

Signature for spanning entry.

SpanningTempSignature

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.SpanningTempSignature = 'P' | ('K' << 8) | ('0' << 16) | ('0' << 24)

static

Signature for temporary spanning entry.

SPANTEMPSIG

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.SPANTEMPSIG = 'P' | ('K' << 8) | ('0' << 16) | ('0' << 24)

static

Signature for temporary spanning entry.

VERSION_AES

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.VERSION_AES = 51

static

Version indicating AES encryption.

VERSION_MADE_BY

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.VERSION_MADE_BY = 51

static

The version made by field for entries in the central header when created by this library.

This is also the Zip version for the library when comparing against the version required to extract for an entry. See ZipInputStream.CanDecompressEntry.

VERSION_STRONG_ENCRYPTION

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.VERSION_STRONG_ENCRYPTION = 50

static

The minimum version required to support strong encryption.

VersionMadeBy

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.VersionMadeBy = 51

static

The version made by field for entries in the central header when created by this library.

This is also the Zip version for the library when comparing against the version required to extract for an entry. See ZipEntry.CanDecompress.

VersionStrongEncryption

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.VersionStrongEncryption = 50

static

The minimum version required to support strong encryption.

VersionZip64

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.VersionZip64 = 45

static

The version required for Zip64 extensions (4.5 or higher)

Zip64CentralDirLocatorSignature

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.Zip64CentralDirLocatorSignature = 'P' | ('K' << 8) | (6 << 16) | (7 << 24)

static

Signature for Zip64 central directory locator.

Zip64CentralFileHeaderSignature

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.Zip64CentralFileHeaderSignature = 'P' | ('K' << 8) | (6 << 16) | (6 << 24)

static

Signature for Zip64 central file header.

Zip64DataDescriptorSize

const int ICSharpCode.SharpZipLib.Zip.ZipConstants.Zip64DataDescriptorSize = 24

static

Size of Zip64 data descriptor.

Property Documentation

DefaultCodePage

int ICSharpCode.SharpZipLib.Zip.ZipConstants.DefaultCodePage

staticgetset

Default encoding used for string conversion. 0 gives the default system OEM code page. Dont use unicode encodings if you want to be Zip compatible! Using the default code page isnt the full solution neccessarily there are many variable factors, codepage 850 is often a good choice for European users, however be careful about compatability.

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The documentation for this class was generated from the following file:

• ICSharpCode.SharpZLib/Zip/ZipConstants.cs