From 78050805bc691a00788f6e51f23dd785ca25b227 Mon Sep 17 00:00:00 2001
From: Jey Kottalam <jey@cs.berkeley.edu>
Date: Sat, 8 Feb 2014 12:24:08 -0800
Subject: [PATCH] Merge pull request #454 from jey/atomic-sbt-download. Closes
#454.
Make sbt download an atomic operation
Modifies the `sbt/sbt` script to gracefully recover when a previous invocation died in the middle of downloading the SBT jar.
Author: Jey Kottalam <jey@cs.berkeley.edu>
== Merge branch commits ==
commit 6c600eb434a2f3e7d70b67831aeebde9b5c0f43b
Author: Jey Kottalam <jey@cs.berkeley.edu>
Date: Fri Jan 17 10:43:54 2014 -0800
Make sbt download an atomic operation
---
sbt/sbt | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/sbt/sbt b/sbt/sbt
index 62ead8a69d..8472dce589 100755
--- a/sbt/sbt
+++ b/sbt/sbt
@@ -29,10 +29,11 @@ JAR=sbt/sbt-launch-${SBT_VERSION}.jar
if [ ! -f ${JAR} ]; then
# Download
printf "Attempting to fetch sbt\n"
+ JAR_DL=${JAR}.part
if hash curl 2>/dev/null; then
- curl --progress-bar ${URL1} > ${JAR} || curl --progress-bar ${URL2} > ${JAR}
+ (curl --progress-bar ${URL1} > ${JAR_DL} || curl --progress-bar ${URL2} > ${JAR_DL}) && mv ${JAR_DL} ${JAR}
elif hash wget 2>/dev/null; then
- wget --progress=bar ${URL1} -O ${JAR} || wget --progress=bar ${URL2} -O ${JAR}
+ (wget --progress=bar ${URL1} -O ${JAR_DL} || wget --progress=bar ${URL2} -O ${JAR_DL}) && mv ${JAR_DL} ${JAR}
else
printf "You do not have curl or wget installed, please install sbt manually from http://www.scala-sbt.org/\n"
exit -1
--
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