Always include default widget set files in OSGi manifest (#16993)

Change-Id: Ib1fc01ced602d3434a0ad63725601237a0def4d1

buildhelpers/src/com/vaadin/buildhelpers/GeneratePackageExports.java

             System.err
                     .println("Invalid number of parameters\n"
                             + "Usage: java -cp .. GenerateManifest <package.jar> <accepted package prefixes>\n"
-                            + "Use -Dvaadin.version to specify the version to be used for the packages");
+                            + "Use -Dvaadin.version to specify the version to be used for the packages\n"
+                            + "Use -DincludeNumberPackages=1 to include package names which start with a number (not 100% OSGi compatible)");
             System.exit(1);
         }
 
             acceptedPackagePrefixes.add(args[i]);
         }
 
+        boolean includeNumberPackages = false;
+        if ("1".equals(System.getProperty("includeNumberPackages"))) {
+            includeNumberPackages = true;
+        }
+
         // List the included Java packages
-        HashSet<String> packages = getPackages(jar, acceptedPackagePrefixes);
+        HashSet<String> packages = getPackages(jar, acceptedPackagePrefixes,
+                includeNumberPackages);
 
         // Avoid writing empty Export-Package attribute
         if (packages.isEmpty()) {
     }
 
     private static HashSet<String> getPackages(JarFile jar,
-            List<String> acceptedPackagePrefixes) {
+            List<String> acceptedPackagePrefixes, boolean includeNumberPackages) {
         HashSet<String> packages = new HashSet<String>();
 
         Pattern startsWithNumber = Pattern.compile("\\.\\d");
             String pkg = entry.getName().substring(0, lastSlash)
                     .replace('/', '.');
 
-            if (startsWithNumber.matcher(pkg).find()) {
+            if (!includeNumberPackages && startsWithNumber.matcher(pkg).find()) {
                 continue;
             }
 

client-compiled/build.xml

     <target name="jar" depends="default-widgetset">
         <antcall target="common.jar">
             <param name="osgi.extra.package.prefixes" value="VAADIN/widgetsets/" />
+            <param name="osgi.includeNumberPackages" value="1" />
             <reference torefid="extra.jar.includes" refid="jar.includes" />
         </antcall>
     </target>

common.xml

             <param name="bundle-name" value="${module.name}" />
             <param name="bundle-symbolic" value="${module.symbolic}" />
             <param name="bundle-vendor" value="${vaadin.vendor}" />
+            <param name="includeNumberPackages" value="${osgi.includeNumberPackages}" />
         </antcall>
 
     </target>
         <fail unless="bundle-symbolic" message="No bundle-symbolic parameter given" />
         <fail unless="bundle-version" message="No bundle-version parameter given" />
         <fail unless="bundle-vendor" message="No bundle-vendor parameter given" />
-
+        <fail unless="includeNumberPackages" message="No includeNumberPackages parameter given" />
         <property name="bundle-manifestversion" value="2" />
 
         <jar file="${jar}" update="true">
             <arg line="com/vaadin com/google ${osgi.extra.package.prefixes}" />
             <classpath refid="buildhelpers.classpath" />
             <jvmarg value="-Dvaadin.version=${vaadin.version}" />
+            <jvmarg value="-DincludeNumberPackages=${includeNumberPackages}" />
         </java>
     </target>