streamzip - create a zip file from stdin
producer | streamzip [opts] | consumer
producer | streamzip [opts] -zipfile=output.zip
This program will read data from stdin
, compress it into a zip container and, by default, write a streamed zip file to stdout
. No temporary files are created.
The zip container written to stdout
is, by necessity, written in streaming format. Most programs that read Zip files can cope with a streamed zip file, but if interoperability is important, and your workflow allows you to write the zip file directly to disk you can create a non-streamed zip file using the zipfile
option.
Create a Zip64-compliant zip container. Use this option if the input is greater than 4Gig.
Default is disabled.
Write zip container to the filename F
.
Use the Stream
option to force the creation of a streamed zip file.
This option is used to name the "file" in the zip container.
Default is '-'.
Ignored when writing to stdout
.
If the zipfile
option is specified, including this option will trigger the creation of a streamed zip file.
Default: Always enabled when writing to stdout
, otherwise disabled.
Compress using method M
.
Valid method names are
* store Store without compression
* deflate Use Deflate compression [Deflault]
* bzip2 Use Bzip2 compression
* lzma Use LZMA compression
* xz Use xz compression
* zstd Use Zstandard compression
Note that Lzma compress needs IO::Compress::Lzma
to be installed.
Note that Zstd compress needs IO::Compress::Zstd
to be installed.
Default is deflate
.
Sets the compression level for deflate
. Ignored for all other compression methods.
-0
means no compression and -9
for maximum compression.
Default is 6
Display version number
Display help
Create a zip file bt reading daa from stdin
$ echo Lorem ipsum dolor sit | perl ./bin/streamzip >abcd.zip
Check the contents of abcd,zip
with the standard unzip
utility
Archive: abcd.zip
Length Date Time Name
--------- ---------- ----- ----
22 2021-01-08 19:45 -
--------- -------
22 1 file
Notice how the Name
is set to -
. That is the default for a few zip utilities whwre the member name is not given.
If you want to explicitly name the file, use the -member-name
option as follows
$ echo Lorem ipsum dolor sit | perl ./bin/streamzip -member-name latin >abcd.zip
$ unzip -l abcd.zip
Archive: abcd.zip
Length Date Time Name
--------- ---------- ----- ----
22 2021-01-08 19:47 latin
--------- -------
22 1 file
A Streamed Zip File is useful in situations where you cannot seek backwards/forwards in the file.
A good examples is when you are serving dynamic content from a Web Server straight into a socket without needing to create a temporary zip file in the filesystsm.
Similarly if your workfow uses a Linux pipelined commands.
General feedback/questions/bug reports should be sent to https://github.com/pmqs/IO-Compress/issues (preferred) or https://rt.cpan.org/Public/Dist/Display.html?Name=IO-Compress.
Paul Marquess pmqs@cpan.org.
Copyright (c) 2019-2024 Paul Marquess. All rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.