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package cbt
import java.io._
import java.net._
import java.nio.file._
import scala.util.Try
import scala.collection.immutable.Seq
object ClassLoaderCache{
private val cache = NailgunLauncher.classLoaderCache
def classLoader( path: String, parent: ClassLoader ): ClassLoader = {
def realpath( name: String ) = Paths.get(new File(name).getAbsolutePath).normalize.toString
val normalized = realpath(path)
if( cache.containsKey(normalized) ){
//println("FOUND: "+normalized)
cache.get(normalized)
} else {
//println("PUTTING: "+normalized)
//Try(???).recover{ case e=>e.printStackTrace}
val cl = new cbt.URLClassLoader( ClassPath(Seq(new File(normalized))), parent )
cache.put( normalized, cl )
cl
}
}
def remove( path: String ) = cache.remove( path )
}
class MultiClassLoader(parents: Seq[ClassLoader]) extends ClassLoader {
override def loadClass(name: String) = {
//System.err.println("LOADING CLASS "+name);
val c = parents.toStream.map{
parent =>
Try{
parent.loadClass(name)
}.map(Option[Class[_]](_)).recover{
case _:ClassNotFoundException => None
}.get
}.find(_.isDefined).flatten
c.getOrElse( ClassLoader.getSystemClassLoader.loadClass(name) )
}
override def toString = "MultiClassLoader(" + parents.mkString(",") + ")"
}
case class URLClassLoader(classPath: ClassPath, parent: ClassLoader)
extends java.net.URLClassLoader(
classPath.strings.map(
path => new URL("file:"+path)
).toArray,
parent
){
override def toString = (
scala.Console.BLUE + "cbt.URLClassLoader" + scala.Console.RESET + "(\n " + getURLs.map(_.toString).sorted.mkString(",\n ")
+ (if(getParent() != ClassLoader.getSystemClassLoader()) ",\n" + getParent().toString.split("\n").map(" "+_).mkString("\n") else "")
+ "\n)"
)
import scala.language.existentials
/*override def loadClass(name: String): Class[_] = {
//System.err.println("LOADING CLASS "+name+" in "+this);
try{
super.loadClass(name)
} catch {
case e: ClassNotFoundException =>
// FIXME: Shouldn't this happen automatically?
parent.loadClass(name)
}
}*/
}
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