cron

A fast non-allocating cron parser in ragel and golang.

features

• [x] standard five-position cron
• [x] six-position cron with seconds
• [x] seven-position cron with seconds and years
• [x] case-insensitive days of the week
• [x] case-insensitive month names
• [x] Quartz compatible ranges e.g.: 4/10, SUN-THURS/2
• [ ] timezone handling (other than UTC)
• [ ] Quartz compatible # handling, i.e. 5#3 meaning the third friday of the month
• [ ] Quartz compatible L handling, i.e. 5L in the day of week field meaning the last friday of a month, or 3L in the day of month field meaning third to last day of the month

performance

On a 3.1 Ghz Core i7 MacBook Pro (Retina, 15-inch, Mid 2017):

TODO

• Once we are done adding all of the Quartz cron features, to copy and pass all of Quartz's parsing tests.