Write JSON to file without String. #1763

cache/tracking/src/main/scala/sbt/Tracked.scala

@@ -39,24 +39,16 @@ object Tracked {
     }
   private[sbt] def lastOuputWithJson[I, O: Pickler: Unpickler](cacheFile: File)(f: (I, Option[O]) => O): I => O = in =>
     {
-      val previous: Option[O] = fromJsonFile[O](cacheFile)
+      val previous: Option[O] = try {
+        fromJsonFile[O](cacheFile).toOption
+      } catch {
+        case e: Throwable => None
+      }
       val next = f(in, previous)
-      toJsonFile(next)(cacheFile)
+      IO.createDirectory(cacheFile.getParentFile)
+      toJsonFile(next, cacheFile)
       next
     }
-  private[sbt] def fromJsonFile[A: Unpickler](file: File): Option[A] =
-    try {
-      val s = IO.read(file, IO.utf8)
-      fromJsonString[A](s).toOption
-    } catch {
-      case e: Throwable => None
-    }
-  private[sbt] def toJsonFile[A: Pickler](a: A)(file: File): Unit =
-    {
-      val str = toJsonString(a)
-      IO.write(file, str, IO.utf8)
-    }
-
   def inputChanged[I, O](cacheFile: File)(f: (Boolean, I) => O)(implicit ic: InputCache[I]): I => O = in =>
     {
       val help = new CacheHelp(ic)

ivy/src/main/scala/sbt/JsonUtil.scala

@@ -10,8 +10,7 @@ private[sbt] object JsonUtil {
   def parseUpdateReport(md: ModuleDescriptor, path: File, cachedDescriptor: File, log: Logger): UpdateReport =
     {
       try {
-        val s = IO.read(path, IO.utf8)
+        val lite = fromJsonFile[UpdateReportLite](path).get
-        val lite = fromJsonString[UpdateReportLite](s).get
         fromLite(lite, cachedDescriptor)
       } catch {
         case e: Throwable =>
@@ -21,8 +20,8 @@ private[sbt] object JsonUtil {
     }
   def writeUpdateReport(ur: UpdateReport, graphPath: File): Unit =
     {
-      val str = toJsonString(toLite(ur))
+      IO.createDirectory(graphPath.getParentFile)
-      IO.write(graphPath, str, IO.utf8)
+      toJsonFile(toLite(ur), graphPath)
     }
   def toLite(ur: UpdateReport): UpdateReportLite =
     UpdateReportLite(ur.configurations map { cr =>

project/Dependencies.scala

@@ -12,7 +12,7 @@ object Dependencies {
   lazy val ivy = "org.scala-sbt.ivy" % "ivy" % "2.3.0-sbt-fccfbd44c9f64523b61398a0155784dcbaeae28f"
   lazy val jsch = "com.jcraft" % "jsch" % "0.1.46" intransitive ()
   lazy val sbinary = "org.scala-tools.sbinary" %% "sbinary" % "0.4.2"
-  lazy val sbtSerialization = "org.scala-sbt" %% "serialization" % "0.1.0"
+  lazy val sbtSerialization = "org.scala-sbt" %% "serialization" % "0.1.1-1479903c3135da50e0442c91e707743311a4f362"
   lazy val scalaCompiler = Def.setting { "org.scala-lang" % "scala-compiler" % scalaVersion.value }
   lazy val testInterface = "org.scala-sbt" % "test-interface" % "1.0"
   lazy val scalaCheck = "org.scalacheck" %% "scalacheck" % "1.11.4"