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) 2019-2021 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.