From dfb7397b8ac09aaedac56e5863c7a9be3613803c Mon Sep 17 00:00:00 2001
From: Mark Harrah <dmharrah@gmail.com>
Date: Wed, 25 Nov 2009 13:03:41 -0500
Subject: [PATCH] A basic readLines method and moving the filtered class loader

---
 scripted/FilteredLoader.scala | 18 ++++++++++++++++++
 util/io/FileUtilities.scala   | 14 ++++++++++++++
 2 files changed, 32 insertions(+)
 create mode 100644 scripted/FilteredLoader.scala

diff --git a/scripted/FilteredLoader.scala b/scripted/FilteredLoader.scala
new file mode 100644
index 000000000..983edf040
--- /dev/null
+++ b/scripted/FilteredLoader.scala
@@ -0,0 +1,18 @@
+/* sbt -- Simple Build Tool
+ * Copyright 2009 Mark Harrah
+ */
+package xsbt.test
+
+final class FilteredLoader(parent: ClassLoader) extends ClassLoader(parent) with NotNull
+{
+	@throws(classOf[ClassNotFoundException])
+	override final def loadClass(className: String, resolve: Boolean): Class[_] =
+	{
+		if(className.startsWith("java.") || className.startsWith("javax."))
+			super.loadClass(className, resolve)
+		else
+			throw new ClassNotFoundException(className)
+	}
+	override def getResources(name: String) = null
+	override def getResource(name: String) = null
+}
\ No newline at end of file
diff --git a/util/io/FileUtilities.scala b/util/io/FileUtilities.scala
index be115bda8..06034befd 100644
--- a/util/io/FileUtilities.scala
+++ b/util/io/FileUtilities.scala
@@ -380,6 +380,20 @@ object FileUtilities
 		out.toByteArray
 	}
 
+	// Not optimized for large files
+	def readLines(file: File): List[String] = readLines(file, defaultCharset)
+	def readLines(file: File, charset: Charset): List[String] =
+	{
+		fileReader(charset)(file){ in =>
+			def readLine(accum: List[String]): List[String] =
+			{
+				val line = in.readLine()
+				if(line eq null) accum.reverse else readLine(line :: accum)
+			}
+			readLine(Nil)
+		}
+	}
+
 	/** A pattern used to split a String by path separator characters.*/
 	private val PathSeparatorPattern = java.util.regex.Pattern.compile(File.pathSeparator)