fugit
Time tools for flor and the floraison group.
It uses et-orbi to represent time instances and raabro as a basis for its parsers.
Fugit will probably become the foundation for rufus-scheduler 4.x
Related projects
Sister projects
- rufus-scheduler - a cron/at/in/every/interval in-process scheduler, in fact, it's the father project to this fugit project
- flor - a Ruby workflow engine, fugit provides the foundation for its time scheduling capabilities
Similar, somehow overlapping projects
- chronic - a pure Ruby natural language date parser
- parse-cron - parses cron expressions and calculates the next occurence after a given date
- ice_cube - Ruby date recurrence library
- ISO8601 - Ruby parser to work with ISO8601 dateTimes and durations
- ...
Fugit.parse(s)
The simplest way to use fugit is via Fugit.parse(s)
.
require 'fugit'
Fugit.parse('0 0 1 jan *').class # ==> ::Fugit::Cron
Fugit.parse('12y12M').class # ==> ::Fugit::Duration
Fugit.parse('2017-12-12').class # ==> ::EtOrbi::EoTime
Fugit.parse('2017-12-12 UTC').class # ==> ::EtOrbi::EoTime
Fugit.parse('every day at noon').class # ==> ::Fugit::Cron
Fugit::Cron
A class Fugit::Cron
to parse cron strings and then #next_time
and #previous_time
to compute the next or the previous occurrence respectively.
There is also a #brute_frequency
method which returns an array [ shortest delta, longest delta, occurrence count ]
where delta is the time between two occurences.
require 'fugit'
c = Fugit::Cron.parse('0 0 * * sun')
# or
c = Fugit::Cron.new('0 0 * * sun')
p Time.now # => 2017-01-03 09:53:27 +0900
p c.next_time # => 2017-01-08 00:00:00 +0900
p c.previous_time # => 2017-01-01 00:00:00 +0900
p c.brute_frequency # => [ 604800, 604800, 53 ]
# [ delta min, delta max, occurrence count ]
p c.match?(Time.parse('2017-08-06')) # => true
p c.match?(Time.parse('2017-08-07')) # => false
p c.match?('2017-08-06') # => true
p c.match?('2017-08-06 12:00') # => false
Example of cron strings understood by fugit:
'5 0 * * *' # 5 minutes after midnight, every day
'15 14 1 * *' # at 1415 on the 1st of every month
'0 22 * * 1-5' # at 2200 on weekdays
'0 22 * * mon-fri' # idem
'23 0-23/2 * * *' # 23 minutes after 00:00, 02:00, 04:00, ...
'@yearly' # turns into '0 0 1 1 *'
'@monthly' # turns into '0 0 1 * *'
'@weekly' # turns into '0 0 * * 0'
'@daily' # turns into '0 0 * * *'
'@midnight' # turns into '0 0 * * *'
'@hourly' # turns into '0 * * * *'
'0 0 L * *' # last day of month at 00:00
'0 0 last * *' # idem
'0 0 -7-L * *' # from the seventh to last to the last day of month at 00:00
# and more...
Fugit::Duration
A class Fugit::Duration
to parse duration strings (vanilla rufus-scheduler ones and ISO 8601 ones).
Provides duration arithmetic tools.
require 'fugit'
d = Fugit::Duration.parse('1y2M1d4h')
p d.to_plain_s # => "1Y2M1D4h"
p d.to_iso_s # => "P1Y2M1DT4H" ISO 8601 duration
p d.to_long_s # => "1 year, 2 months, 1 day, and 4 hours"
d += Fugit::Duration.parse('1y1h')
p d.to_long_s # => "2 years, 2 months, 1 day, and 5 hours"
d += 3600
p d.to_plain_s # => "2Y2M1D5h3600s"
The to_*_s
methods are also available as class methods:
p Fugit::Duration.to_plain_s('1y2M1d4h')
# => "1Y2M1D4h"
p Fugit::Duration.to_iso_s('1y2M1d4h')
# => "P1Y2M1DT4H" ISO 8601 duration
p Fugit::Duration.to_long_s('1y2M1d4h')
# => "1 year, 2 months, 1 day, and 4 hours"
Fugit::At
Points in time are parsed and given back as EtOrbi::EoTime instances.
Fugit::At.parse('2017-12-12').to_s
# ==> "2017-12-12 00:00:00 +0900" (at least here in Hiroshima)
Fugit::At.parse('2017-12-12 12:00:00 America/New_York').to_s
# ==> "2017-12-12 12:00:00 -0500"
Directly with Fugit.parse_at(s)
is OK too:
Fugit.parse_at('2017-12-12 12:00:00 America/New_York').to_s
# ==> "2017-12-12 12:00:00 -0500"
Directly with Fugit.parse(s)
is OK too:
Fugit.parse('2017-12-12 12:00:00 America/New_York').to_s
# ==> "2017-12-12 12:00:00 -0500"
Fugit::Nat
Fugit understand some kind of "natural" language:
For example, those "every" get turned into Fugit::Cron
instances:
Fugit::Nat.parse('every day at five') # ==> '0 5 * * *'
Fugit::Nat.parse('every weekday at five') # ==> '0 5 * * 1,2,3,4,5'
Fugit::Nat.parse('every day at 5 pm') # ==> '0 17 * * *'
Fugit::Nat.parse('every tuesday at 5 pm') # ==> '0 17 * * 2'
Fugit::Nat.parse('every wed at 5 pm') # ==> '0 17 * * 3'
Fugit::Nat.parse('every day at 16:30') # ==> '30 16 * * *'
Fugit::Nat.parse('every day at noon') # ==> '0 12 * * *'
Fugit::Nat.parse('every day at midnight') # ==> '0 0 * * *'
Fugit::Nat.parse('every tuesday and monday at 5pm') # ==> '0 17 * * 1,2'
Fugit::Nat.parse('every wed or Monday at 5pm and 11') # ==> '0 11,17 * * 1,3'
Directly with Fugit.parse(s)
is OK too:
Fugit.parse('every day at five') # ==> Fugit::Cron instance '0 5 * * *'
LICENSE
MIT, see LICENSE.txt