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package cask.decorators
import java.io.{ByteArrayOutputStream, OutputStream}
import java.util.zip.{DeflaterOutputStream, GZIPOutputStream}
import cask.model.{Request, Response}
import collection.JavaConverters._
class compress extends cask.RawDecorator{
def wrapFunction(ctx: Request, delegate: Delegate) = {
val acceptEncodings = Option(ctx.exchange.getRequestHeaders.get("Accept-Encoding"))
.toSeq
.flatMap(_.asScala)
.flatMap(_.split(", "))
val r = delegate(Map())
val finalResult = r.transform{ case v: cask.Response.Raw =>
val (newData, newHeaders) = if (acceptEncodings.exists(_.toLowerCase == "gzip")) {
new Response.Data {
def write(out: OutputStream): Unit = {
val wrap = new GZIPOutputStream(out)
v.data.write(wrap)
wrap.flush()
wrap.close()
}
} -> Seq("Content-Encoding" -> "gzip")
}else if (acceptEncodings.exists(_.toLowerCase == "deflate")){
new Response.Data {
def write(out: OutputStream): Unit = {
val wrap = new DeflaterOutputStream(out)
v.data.write(wrap)
wrap.flush()
}
} -> Seq("Content-Encoding" -> "deflate")
}else v.data -> Nil
Response(
newData,
v.statusCode,
v.headers ++ newHeaders,
v.cookies
)
}
finalResult
}
}
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