automating some update scripts
diff --git a/org.eclipse.wtp.releng.webupdatesite/build-home/createDigests.xml b/org.eclipse.wtp.releng.webupdatesite/build-home/createDigests.xml
new file mode 100644
index 0000000..5e28781
--- /dev/null
+++ b/org.eclipse.wtp.releng.webupdatesite/build-home/createDigests.xml
@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project basedir="." default="createDigest">
+
+    <target name="createDigest" depends="checkArgs">
+
+        <property name="java15-home"
+                  value="/home/data/users/david_williams/ibm-java2-ppc-50/jre" />
+        <property name="buildDirectory"
+                  value="${basedir}" />
+
+        <java jar="${eclipse.home}/startup.jar"
+              fork="true"
+              jvm="${java15-home}/bin/java"
+              failonerror="true"
+              maxmemory="128m"
+              dir="${buildDirectory}">
+            <arg line="-application org.eclipse.update.core.siteOptimizer" />
+            <arg line="-digestBuilder -digestOutputDir=${updateSite} -siteXML=${updateSite}/site.xml" />
+        </java>
+
+    </target>
+
+    <target name="checkArgs">
+        <fail message="eclipse.home and updateSite must be set.">
+            <condition>
+                <and>
+                    <not>
+                        <isset property="eclipse.home" />
+                    </not>
+                    <not>
+                        <isset property="updateSite" />
+                    </not>
+                </and>
+            </condition>
+        </fail>
+    </target>
+
+
+</project>