Added eclipse director script, for easy command-line

provisioning operations. Modify it to point to your eclipse directory
(or pass it using --eclipse-dir), and easily install or uninstall
scala plugin versions.

eclipse-director.sh

@@ -0,0 +1,93 @@
+#!/bin/bash
+
+eclipse_dir="/Applications/Programming/eclipse-helios/"
+eclipse_opt="-nosplash -consoleLog"
+app="org.eclipse.equinox.p2.director"
+
+eclipse_repo="http://download.eclipse.org/releases/helios/"
+branch="master"
+scala_repo="http://scala-ide.dreamhosters.com/nightly-update"
+
+function usage()
+{
+    cat <<EOF
+`basename $0` [opt] command [pluginid]
+
+Options:
+    --eclipse-dir <path>      Path to the Eclipse installation that you want to modify
+
+Commands:
+    list                      List available plugins. (useless right now, as it uses the Eclipse repo).
+
+    install <id>              Install plugin. It is the version number of the Scala installation
+                              For instance: 2.9.1.final or trunk
+
+    uninstall                 Uninstall the currently installed Scala plugin
+
+    uninstall-bundle <id>     Uninstall the given bundle
+
+    help                      Print this help screen
+
+EOF
+    exit 1
+}
+
+while [ $# -gt 0 ]; do
+
+    case $1 in 
+        "" | "help")
+            usage
+            ;;
+
+        "--eclipse-dir")
+            eclipse_dir=$2
+            echo "Eclipse installation dir is $eclipse_dir"
+            shift 2
+            ;;
+
+        "--branch")
+            branch=$2
+            echo "Eclipse repository is $scala_repo-$branch-?"
+            shift 2
+            ;;
+
+        "list")
+            $eclipse_dir/eclipse $eclipse_opt \
+                -application $app \
+                -repository $eclipse_repo \
+                -list
+            shift
+            ;;
+
+        "install")
+            echo "Installing $2.."
+            $eclipse_dir/eclipse $eclipse_opt \
+                -application $app \
+                -repository "$scala_repo-$branch-$2" \
+                -installIU org.scala-ide.sdt.feature.feature.group
+            shift 2
+            ;;
+
+        "uninstall")
+            echo "Unnstalling.."
+            shift 1
+            $eclipse_dir/eclipse $eclipse_opt \
+                -application $app \
+                -repository "$eclipse_repo" \
+                -uninstallIU org.scala-ide.sdt.feature.feature.group
+            ;;
+
+        "uninstall-bundle")
+            echo "Unnstalling.. $2"
+            $eclipse_dir/eclipse $eclipse_opt \
+                -application $app \
+                -repository "$eclipse_repo" \
+                -uninstallIU $2
+            shift 2
+            ;;
+
+        *)
+            usage
+            ;;
+    esac
+done