durseq - Generate a sequence of durations
This document describes version 0.004 of durseq (from Perl distribution App-durseq), released on 2019-11-29.
Usage:
% durseq [options] [from] [to] [increment]
Examples:
Generate "infinite" durations from zero (then P1D, P2D, ...):
% durseq
Generate durations from P0D to P10D:
% durseq P0D P10D PT0H0M0S P1D ... 7 more lines ... P9D P10D
Generate durations from P0D to P10D, with 12 hours increment:
% durseq P0D P10D -i PT12H PT0H0M0S PT12H ... 17 more lines ... PT228H PT240H
Generate durations from P10D to P0D (reverse):
% durseq P10D P0D -r P10D P9D ... 7 more lines ... P1D PT0H0M0S
Generate 10 durations from P1M (increment 1 week):
% durseq P1M -i P1W -n 10 P1M P1M7D ... 6 more lines ... P1M56D P1M63D
This utility is similar to Perl script dateseq, except that it generates a sequence of durations instead of dates.
* marks required options.
*
Starting duration.
Increment, default is one day (P1D).
Only generate a certain amount of items.
Decrement instead of increment.
Ending duration, if not specified will generate an infinite* stream of durations.
Arguments to pass to constructor of DateTime::Format::* class (JSON-encoded).
See --format-class-attrs.
--format-class-attrs
Arguments to pass to constructor of DateTime::Format::* class.
Use a DateTime::Format::Duration::* class for formatting.
Default value:
"ISO8601"
By default, "ISO8601" (<pm:DateTime::Format::Duration::ISO8601>) is used.
Choose output format, e.g. json, text.
undef
Set output format to json.
When outputing as JSON, strip result envelope.
0
By default, when outputing as JSON, the full enveloped result is returned, e.g.:
[200,"OK",[1,2,3],{"func.extra"=>4}]
The reason is so you can get the status (1st element), status message (2nd element) as well as result metadata/extra result (4th element) instead of just the result (3rd element). However, sometimes you want just the result, e.g. when you want to pipe the result for more post-processing. In this case you can use `--naked-res` so you just get:
[1,2,3]
Display help message and exit.
Display program's version and exit.
This script has shell tab completion capability with support for several shells.
To activate bash completion for this script, put:
complete -C durseq durseq
in your bash startup (e.g. ~/.bashrc). Your next shell session will then recognize tab completion for the command. Or, you can also directly execute the line above in your shell to activate immediately.
It is recommended, however, that you install modules using cpanm-shcompgen which can activate shell completion for scripts immediately.
To activate tcsh completion for this script, put:
complete durseq 'p/*/`durseq`/'
in your tcsh startup (e.g. ~/.tcshrc). Your next shell session will then recognize tab completion for the command. Or, you can also directly execute the line above in your shell to activate immediately.
It is also recommended to install shcompgen (see above).
For fish and zsh, install shcompgen as described above.
Please visit the project's homepage at https://metacpan.org/release/App-durseq.
Source repository is at https://github.com/perlancar/perl-App-durseq.
Please report any bugs or feature requests on the bugtracker website https://rt.cpan.org/Public/Dist/Display.html?Name=App-durseq
When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.
perlancar <perlancar@cpan.org>
This software is copyright (c) 2019 by perlancar@cpan.org.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.
To install App::durseq, copy and paste the appropriate command in to your terminal.
cpanm
cpanm App::durseq
CPAN shell
perl -MCPAN -e shell install App::durseq
For more information on module installation, please visit the detailed CPAN module installation guide.