Don't corrupt IDEA installation if update task has failed

build/update.cmd

@@ -31,6 +31,7 @@ CD %DEV_IDEA_HOME%
 SET ANT_HOME=%DEV_IDEA_HOME%\lib\ant
 SET EXEC_ANT="%JAVA_HOME%\bin\java.exe" -Dant.home=%ANT_HOME% -classpath "%ANT_HOME%\lib\ant-launcher.jar" org.apache.tools.ant.launch.Launcher
 CALL %EXEC_ANT% -f build/update.xml %*
+IF errorlevel 1 GOTO failed
 
 DEL /Q /S %WORK_IDEA_HOME%\lib
 DEL /Q /S %WORK_IDEA_HOME%\plugins
@@ -39,5 +40,10 @@ XCOPY %DEV_IDEA_HOME%\bin\win\*.dll %WORK_IDEA_HOME%\bin\ /Q /E /Y
 XCOPY %DEV_IDEA_HOME%\bin\win\fsnotifier.exe %WORK_IDEA_HOME%\bin\ /Q /E /Y
 XCOPY %DEV_IDEA_HOME%\bin\win\runnerw.exe %WORK_IDEA_HOME%\bin\ /Q /E /Y
 XCOPY %DEV_IDEA_HOME%\out\deploy\*.* %WORK_IDEA_HOME%\ /Q /E /Y
+GOTO done
 
+:failed
+ECHO "Update failed; work IDEA build not modified."
+
+:done
 CD /D %WORK_IDEA_HOME%\bin

build/update.sh

@@ -11,12 +11,12 @@
 
 if [ ! -f "$WORK_IDEA_HOME/bin/inspect.sh" ]; then
   echo "WORK_IDEA_HOME must be defined and point to build you're updating."
-  exit
+  exit 1
 fi
 
 if [ ! -f "$DEV_IDEA_HOME/build/update.sh" ]; then
   echo "DEV_IDEA_HOME must be defined and point to source base you're updating from."
-  exit
+  exit 1
 fi
 
 echo "Updating $WORK_IDEA_HOME from compiled classes in $DEV_IDEA_HOME"
@@ -26,6 +26,12 @@ ANT_CLASSPATH="$DEV_IDEA_HOME/build/lib/gant/lib/jps.jar"
 java -Xms64m -Xmx512m -Dant.home="$ANT_HOME" -classpath "$ANT_HOME/lib/ant-launcher.jar" org.apache.tools.ant.launch.Launcher \
  -lib "$ANT_CLASSPATH" -f $DEV_IDEA_HOME/build/update.xml $TARGET
 
+if [ "$?" != "0" ]; then
+  echo "Update failed; work IDEA build not modified."
+  rm -rf "$WORK_IDEA_HOME/___tmp___"
+  exit 2
+fi
+
 rm -rf $WORK_IDEA_HOME/lib
 rm -rf $WORK_IDEA_HOME/plugins