Time::Duration::Parse::More - parse natural language time duration expressions
use Time::Duration::Parse::More; my ($seconds); $seconds = parse_duration('1 minute, 30 seconds'); ## 90 $seconds = parse_duration('1 minute plus 15 seconds'); ## 75 $seconds = parse_duration('1 minute minus 15 seconds'); ## 45 $seconds = parse_duration('1 day minus 2.5 hours and 10 minutes plus 15 seconds'); ## 76815 $seconds = parse_duration('minus 15 seconds'); ## -15 $seconds = parse_duration('midnight'); ## it depends :)
The module parses a limited set of natural language expressions and converts them into seconds.
It is backwards compatible with Time::Duration::Parse (passes the same test cases), but adds more expressions and memoization.
At the moment, the module is limited to english language expressions.
The following rules are used to parse the expressions:
N factoris translated to
N * factor_in_seconds.
factoris optional, defaults to seconds. Negative and fractional values of
Nare suported. Singular, plural and single letter versions of
factorare also recognised. All are case-insensitive except the single letter versions;
XhYmZs(any order, all parts optional) are also supported;
The hard-coded 'midnight' expression is also understood and returns the number of seconds up to 00:00:00 of the next day.
The following factors are understood, with the corresponding value in seconds between parentesis:
$seconds = parse_duration($expression);
$expression in natural lanaguage returns the number of seconds it represents. This result, with the exception of the 'midnight' expression, is cached so future calls with the same expression will be faster.
If the expression cannot be parsed,
parse_duration will croak.
Same as "parse_duration", but the result will not be cached.
This module started as a private module for a closed-source project. I started to release it as
Time::Delta when I discovered Time::Duration::Parse. I updated the API to match it, and added my own improvements. This is the result.
You can find documentation for this module with the perldoc command.
The following websites have more information about this module, and may be of help to you. As always, in addition to those websites please use your favorite search engine to discover more resources.
A modern, open-source CPAN search engine, useful to view POD in HTML format.
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You can email the author of this module at
MELO at cpan.org asking for help with any problems you have.
Please report any bugs or feature requests through the web interface at https://github.com/melo/perl-time-duration-parse-more/issues. You will be automatically notified of any progress on the request by the system.
The code is open to the world, and available for you to hack on. Please feel free to browse it and play with it, or whatever. If you want to contribute patches, please send me a diff or prod me to pull from your repository :)
Stole test cases and other small tidbits from Miyagawa's Time::Duration::Parse.
Pedro Melo <email@example.com>
This software is Copyright (c) 2013 by Pedro Melo.
This is free software, licensed under:
The Artistic License 2.0 (GPL Compatible)