unz_file_info-class: Information about entry in zip archive file

In statwonk/Rcompression: In-memory decompression for GNU zip and bzip2 formats.

Description

This class provides a description of an individual file entry in a zip archive. It details, amongst other things, the original size and compressed size of the file, the version and level information of the compression technique, details about extra information stored in the header and the file system date stamp of the file at the time it was added to the archive.

The unz_file_infoRef class is not explicitly used but is available to return a reference to a C-level instance rather than providing a complete copy of it in R. This is convenient if one wants to a) avoid the computation of copying the object, or b) wants to mutate the object. The bindings are not here to make element-wise modifications but can be easily generated from the RGCCTranslationUnit package.

Objects from the Class

Typically, instances are created in C code when reading the zip archive file via the function getZipInfo. It is not necessarily useful to create instances manually within R.

Slots

version:

Object of class "numeric" ~~

version_needed:

Object of class "numeric" ~~

flag:

Object of class "numeric" ~~

compression_method:

Object of class "numeric" ~~

dosDate:

Object of class "numeric" ~~

crc:

Object of class "numeric" ~~

compressed_size:

Object of class "numeric" ~~

uncompressed_size:

Object of class "numeric" ~~

size_filename:

Object of class "numeric" ~~

size_file_extra:

Object of class "numeric" ~~

size_file_comment:

Object of class "numeric" ~~

disk_num_start:

Object of class "numeric" ~~

internal_fa:

Object of class "numeric" ~~

external_fa:

Object of class "numeric" ~~

tmu_date:

Object of class "tm_unz" ~~

Methods

No methods defined with class unz_file_info in the signature.

Note

The class definition and code to create instances of this class was machine generated.

Author(s)

Duncan Temple Lang

References

zlib and the minizip directory in the contrib/ section. The code was written by Gilles Volant and adapted to R.

See Also

getZipInfo

statwonk/Rcompression documentation built on May 30, 2019, 10:43 a.m.