#19 added multiple file output

Author: sksamuel

src/main/scala/scoverage/IOUtils.scala

@@ -6,11 +6,13 @@ import java.io._
 object IOUtils {
 
   // loads all the invoked statement ids
-  def invoked(file: File): Seq[Int] = {
-    val reader = new BufferedReader(new FileReader(file))
-    val line = reader.readLine()
-    reader.close()
-    line.split(";").filterNot(_.isEmpty).map(_.toInt)
+  def invoked(dir: File): Seq[Int] = {
+    dir.listFiles.map(file => {
+      val reader = new BufferedReader(new FileReader(file))
+      val line = reader.readLine()
+      reader.close()
+      line.split(";").filterNot(_.isEmpty).map(_.toInt)
+    }).flatten.toSeq
   }
 
   def serialize(coverage: Coverage, file: File) {

src/main/scala/scoverage/Invoker.scala

@@ -1,6 +1,6 @@
 package scoverage
 
-import java.io.FileWriter
+import java.io.{File, FileWriter}
 
 /** @author Stephen Samuel */
 object Invoker {
@@ -16,7 +16,10 @@ object Invoker {
    * @see http://stackoverflow.com/questions/3032482/is-appending-to-a-file-atomic-with-windows-ntfs
    */
   def invoked(id: Int, path: String) = {
-    val writer = new FileWriter(path, true)
+    val dir = new File(path)
+    dir.mkdirs()
+    val file = new File(path + "/" + Thread.currentThread.getId)
+    val writer = new FileWriter(file, true)
     writer.append(id.toString + ';')
     writer.close()
   }