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ClientResponse.scala
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ClientResponse.scala
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/*
* Copyright 2014 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.blaze.http
import java.nio.ByteBuffer
import java.nio.charset.Charset
import org.http4s.blaze.util.{BufferTools, Execution}
import scala.collection.mutable.ArrayBuffer
import scala.concurrent.Future
import scala.util.control.NonFatal
/** HTTP response received by the client
*
* @param code
* Response code
* @param status
* Response message. This have no meaning for the HTTP connection, its just for human enjoyment.
* @param headers
* Response headers
* @param body
* [[BodyReader]] used to consume the response body.
*/
case class ClientResponse(code: Int, status: String, headers: Headers, body: BodyReader)
object ClientResponse {
private val charsetRegex = "(?<=charset=)[^;]*".r
def stringBody(response: ClientResponse): Future[String] = {
val acc = new ArrayBuffer[ByteBuffer](8)
var count = 0
def go(): Future[String] =
response
.body()
.flatMap { buffer =>
count += buffer.remaining()
if (buffer.hasRemaining) {
acc += buffer
go()
} else {
val b = BufferTools.joinBuffers(acc)
val encoding = getCharset(response.headers)
try {
val bodyString = Charset.forName(encoding).decode(b).toString()
Future.successful(bodyString)
} catch { case NonFatal(t) => Future.failed(t) }
}
}(Execution.trampoline)
go()
}
private def getCharset(hs: Headers): String =
hs.collectFirst {
case (k, v) if k.equalsIgnoreCase("content-type") =>
charsetRegex.findFirstIn(v)
}.flatten
.getOrElse("UTF-8")
}