RelativeTime

A library that lets you define the language of relative time, e.g. "5 hours ago" or "1 month from now" and so on.

How to use:

Start with the DSL builder like so:

val relativeTime = relativeTime {
    // ...
}

Add any number of timeRangeFormatter builders in that block to set the kinds of output you want to use within an interval of time:

    // From now til 1 hour from now, this will print in a 'minutes from now' style.
    timeRangeFormatter(now exclusiveToInclusive 1.toDuration(DurationUnit.HOURS)) { info ->
        "${info.delta.inWholeMinutes} minutes from now"
    }

There's also other builder functions like timeZone and currentTimeProvider.

Once that's done, any values passed to its RelativeTime.from function that fall within the range(s) of the TimeRangeFormatter(s) that it owns will output the language you've defined:

val currentTime = System.currentTimeMillis().toDuration(DurationUnit.MILLISECONDS)
val fiveMinutes = 5.toDuration(DurationUnit.MILLISECONDS)
relativeTime.from(currentTime + fiveMinutes).let(::println) // prints "5 minutes from now"

For more examples, see the sample gradle module in this project or the TestUtils.kt file in library/src/test.

Install:

Copy and paste! It's only two small files. This was originally published to JCenter, but that's gonezo.