From 762bac2975055e76e995eaccc500045f8b2b4290 Mon Sep 17 00:00:00 2001
From: softprops <d.tangren@gmail.com>
Date: Thu, 13 Oct 2011 02:12:30 -0400
Subject: [PATCH] add support for a masked readline

---
 util/complete/LineReader.scala | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/util/complete/LineReader.scala b/util/complete/LineReader.scala
index b8ab32f87..66479e736 100644
--- a/util/complete/LineReader.scala
+++ b/util/complete/LineReader.scala
@@ -10,9 +10,12 @@ package sbt
 abstract class JLine extends LineReader
 {
 	protected[this] val reader: ConsoleReader
-	def readLine(prompt: String) = JLine.withJLine { unsynchronizedReadLine(prompt) }
-	private[this] def unsynchronizedReadLine(prompt: String) =
-		reader.readLine(prompt) match
+	def readLine(prompt: String, mask: Option[Char] = None) = JLine.withJLine { unsynchronizedReadLine(prompt, mask) }
+	private[this] def unsynchronizedReadLine(prompt: String, mask: Option[Char]) =
+		(mask match {
+			case Some(m) => reader.readLine(prompt, m)
+			case None => reader.readLine(prompt)
+		}) match
 		{
 			case null => None
 			case x => Some(x.trim)
@@ -59,7 +62,7 @@ private object JLine
 
 trait LineReader
 {
-	def readLine(prompt: String): Option[String]
+	def readLine(prompt: String, mask: Option[Char] = None): Option[String]
 }
 final class FullReader(historyPath: Option[File], complete: Parser[_]) extends JLine
 {
@@ -81,4 +84,4 @@ class SimpleReader private[sbt] (historyPath: Option[File]) extends JLine
 object SimpleReader extends JLine
 {
 	protected[this] val reader = JLine.createReader()
-}
\ No newline at end of file
+}