ある User の gist の File をまとめて download してローカルに zip で保存する

gistfile1.scala

object Main{
  import scala.util.parsing.json.JSON

  def gistsUrl(user:String) = "http://gist.github.com/api/v1/json/gists/" + user
  
  def gistsFile(repo:String,fileName:String) = "https://raw.github.com/gist/" + repo + "/"+  fileName
  
  type jsonType = Map[String,List[Map[String,Any]]]
  
  def byteIteratorFromURL(url:String):Iterator[Byte] = {
    val in = new java.net.URL(url).openStream
    Iterator.continually(in.read).takeWhile(_ != -1).map(_.toByte)
  }

  def main(args:Array[String]){

    val name = "xuwei-k"
    
    val jsonData = io.Source.fromURL(gistsUrl(name)).mkString
    val json = JSON.parseFull( jsonData ).get.asInstanceOf[jsonType]
    
    val RepositoryList = json("gists").map{ o =>
      val repoId = o("repo").asInstanceOf[String]
      val fileNames = o("files").asInstanceOf[List[String]]
      val files = fileNames.map{ f =>
        val data = byteIteratorFromURL(gistsFile(repoId,f)).toArray
        ByteFile(repoId + "/" + f, data )
      }
      Repo(repoId,files)
    }
    
    saveToZipFile(RepositoryList,name + ".zip")
  }

  import java.util.zip._
  
  case class Repo(name:String,files:List[ByteFile])
  
  case class ByteFile(name:String,data:Array[Byte])
  
  def saveToZipFile(repoList:List[Repo],saveFileName:String){
    val buf = new java.io.FileOutputStream(saveFileName)
    val o = new ZipOutputStream(buf)
    
    def put(name:String,data:Array[Byte]){
      o.putNextEntry(new ZipEntry(name))
      o.write(data)
    }
    
    repoList.foreach{r =>
      put(r.name + "/" ,Array.empty)
      r.files.foreach(f => put(f.name,f.data))
    }
    o.close
    buf.close
  }

}