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Accept-Ranges.scala
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Accept-Ranges.scala
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/*
* Copyright 2013 http4s.org
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.http4s
package headers
import cats.parse.Parser
import cats.parse.{Parser0 => P0}
import cats.syntax.all._
import org.http4s.internal.parsing.CommonRules
import org.http4s.util.Renderer
import org.typelevel.ci._
object `Accept-Ranges` {
def apply(first: RangeUnit, more: RangeUnit*): `Accept-Ranges` = apply((first +: more).toList)
def bytes: `Accept-Ranges` = apply(RangeUnit.Bytes)
def none: `Accept-Ranges` = apply(Nil)
def parse(s: String): ParseResult[`Accept-Ranges`] =
ParseResult.fromParser(parser, "Invalid Accept-Ranges header")(s)
/* https://datatracker.ietf.org/doc/html/rfc7233#appendix-C */
val parser: P0[`Accept-Ranges`] = {
val none = Parser.string("none").as(Nil)
val rangeUnit = CommonRules.token.map(org.http4s.RangeUnit.apply)
/*
Accept-Ranges = acceptable-ranges
OWS = <OWS, see [RFC7230], Section 3.2.3>
acceptable-ranges = ( *( "," OWS ) range-unit *( OWS "," [ OWS range-unit ] ) ) / "none"
*/
val acceptableRanges: P0[List[RangeUnit]] =
Parser.oneOf0(
List(
none,
CommonRules.headerRep1(rangeUnit).map(_.toList),
)
)
acceptableRanges.map(headers.`Accept-Ranges`.apply)
}
implicit val headerInstance: Header[`Accept-Ranges`, Header.Single] =
Header.create(
ci"Accept-Ranges",
_.rangeUnits.toNel match {
case None => "none"
case Some(nel) => Renderer.renderString(nel)
},
parse,
)
}
final case class `Accept-Ranges`(rangeUnits: List[RangeUnit])