lucuma.catalog.csv.ImportEpochParsers.scala Maven / Gradle / Ivy
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// Copyright (c) 2016-2023 Association of Universities for Research in Astronomy, Inc. (AURA)
// For license information see LICENSE or https://opensource.org/licenses/BSD-3-Clause
package lucuma.catalog.csv
import cats.parse.Parser
import cats.parse.Parser.char
import cats.parse.Parser.charIn
import cats.parse.Rfc5234.*
import lucuma.core.math.Epoch
import lucuma.core.math.parser.EpochParsers
import lucuma.core.parser.TimeParsers
trait ImportEpochParsers {
// Move to lucuma-core
private val plainNumberEpoch: Parser[Epoch] =
TimeParsers.year4.mapFilter(y =>
if (y.getValue() >= 1900 && y.getValue() <= 3000)
Epoch.Julian.fromIntMilliyears(y.getValue())
else None
)
private val miliyear: Parser[Int] = digit.rep(1, 3).map(_.toList.mkString("").padTo(3, '0').toInt)
private val year: Parser[Int] = (charIn('1' to '3') ~ digit ~ digit ~ digit).string
.map(_.toInt)
.filter(i => i >= 1900 && i <= 3000)
/** Parser for an `Epoch`. */
private val epoch: Parser[Epoch] =
(EpochParsers.epochScheme ~ year ~ char('.').void.? ~ miliyear.?)
.map { case ((((s, y), _), m)) =>
s.fromMilliyearsUnsafe(y * 1000 + m.getOrElse(0))
}
.withContext("epoch")
val epochParser: Parser[Epoch] =
epoch | EpochParsers.epochLenientNoScheme | plainNumberEpoch
}