hrrule-go 🧐👀⚛️📜

Library for make human readable recurrence rules from iCalendar RRULE (RFC5545) in Golang
It supports serialization of recurrence rules to natural language, with internationalisation!

It is a partial port of the rrule module from rrule.js library.

Using

package main

import (
	"fmt"
	"log"

	"github.com/nicksnyder/go-i18n/v2/i18n"
	"golang.org/x/text/language"

	"github.com/skillcoder/hrrule-go"
)

func main() {
	hRule, err := hrrule.New(i18n.NewBundle(language.AmericanEnglish))
	if err != nil {
		log.Fatalf("filed to init rrule humanizer: %v", err)
	}

	rOption, err := hrrule.StrToROption("FREQ=MONTHLY;INTERVAL=1;BYDAY=-1FR;UNTIL=20241229T155400Z")
	if err != nil {
		log.Fatalf("rrule string to option: %v", err)
	}

	nlString, err := hRule.Humanize(rOption, "en-US")
	if err != nil {
		log.Fatalf("humanize rrule to string: %v", err)
	}
	fmt.Println(nlString)
}

Translation to new language

See docs in https://github.com/nicksnyder/go-i18n

1. touch l10n/translate.ru.toml
2. goi18n merge l10n/active.en-US.toml translate.ru.toml
3. After translate.ru.toml has been translated, move it to l10n/active.ru-RU.toml.

🚧 It is necessary to agreement on the declension, cases and kind in the languages in which they exist 🚧

TODO

• Day of the week translation support
• Months translation support