<zipArchive variable>.Open (Function)

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Special case of the .GZ extension

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<zipArchive variable>.Open (Function)

In french: <Variable zipArchive>.Ouvre

Opens an existing archive.

For the archives in "CAB" or "RAR" format, the archive is created if it does not exist.

The archive can be:

in WinZip or PKZip format (.ZIP extension).
in WINDEV format (.WDZ extension).
in Cabinet file format (.CAB extension).
in RAR format (.RAR extension).
Versions 18 and later
in 7z format (.7z extension).
New in version 18
in 7z format (.7z extension).
in 7z format (.7z extension).
Versions 21 and later
in TAR format (.TAR extension).
New in version 21
in TAR format (.TAR extension).
in TAR format (.TAR extension).
Versions 21 and later
in TGZ format (.TGZ extension).
New in version 21
in TGZ format (.TGZ extension).
in TGZ format (.TGZ extension).
Versions 21 and later
in TAR.GZ format (.TAR.GZ extension).
New in version 21
in TAR.GZ format (.TAR.GZ extension).
in TAR.GZ format (.TAR.GZ extension).
an executable (.EXE) corresponding to a .WDZ file changed into a self-extracting archive.

Versions 18 and later

This function now supports the 7z format.

New in version 18

This function now supports the 7z format.

Versions 21 and later

This function now supports the TAR and TGZ (TAR.GZ) formats.

New in version 21

This function now supports the TAR and TGZ (TAR.GZ) formats.

Example

MyArchive is zipArchive
// Open an archive
ResOpenArchive = MyArchive.Open("C:\MyArchives\Archive.zip")

// Display an error message if the archive was not opened
IF ResOpenArchive <> 0 THEN
Error(zipMsgError(ResOpenArchive))
END

Syntax

<Result> = <Archive>.Open(<Archive path> [, <Opening mode>])

<Result>: Integer

0 if the archive was opened,
An error code (value greater than 0) otherwise. For more details on these error codes, see the Remarks.

<Archive>: zipArchive variable

Name of a variable of type zipArchive corresponding to the archive to use.
The archive is created if it does not exist (except for the "CAB" or "RAR" formats).

<Archive path>: Character string

Path and name of archive (up to 260 characters). The archive extension can be specified. If the archive extension is not specified, the default extension is .WDZ.

<Opening mode>: Optional constant (or combination of constants)

Archive opening mode:
zipCreateIfNotFound Creates the archive if it does not exist
(not available for .CAB and .RAR files)
zipHeader64 Allows you to create an archive larger than 4 GB on which zipChangePath can be used.
Versions 21 and later
Archive in TAR or TGZ (TAR.GZ) format: This constant is not available.
New in version 21
Archive in TAR or TGZ (TAR.GZ) format: This constant is not available.
Archive in TAR or TGZ (TAR.GZ) format: This constant is not available.
zipRead Opening in read-only
zipWrite Opening in read/write
(not available for .CAB and .RAR files)

The default opening mode is: zipCreateIfNotFound + zipWrite.

Remarks

Error codes

The following error codes are returned:

1: The path passed as parameter does not exist.
2: Access denied: the user has no sufficient rights.
3: The archive is corrupted.
6: The files of the sub-archives are not arranged in order (when opening a multi-part archive).

The message corresponding to the error code is returned by zipMsgError. Reminder:

Only ZIP, TAR and TGZ (TAR.GZ) archives are available.

Special case of the .GZ extension

'.tar.gz' files generated by GitHub should not be confused with compressed '.gz' files.
Content compressed in gzip format can be decompressed with Uncompress.

Component: wd270zip.dll