Java: added compiled metadata generation

tools/scripts/generate_metadata.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+
+filedir="./$(dirname "$0")"
+javadir="$filedir/../java"
+project_home="$filedir/../.."
+generated_dir="$project_home/src/phonenumberutil/generated"
+echo $generated_dir
+
+resources_dir="$project_home/resources"
+rust_build_jar="$javadir/rust-build/target/rust-build-1.0-SNAPSHOT-jar-with-dependencies.jar"
+
+# mvn -f "$javadir/pom.xml" install
+mkdir -p "$generated_dir"
+
+function generate {
+    java -jar "$rust_build_jar" \
+        BuildMetadataRustFromXml \
+        "$resources_dir/$1" \
+        "$generated_dir/$2.rs" \
+        "$3" \
+        "--const-name=$4"
+}
+
+# generate general metadata
+generate "PhoneNumberMetadata.xml" "metadata" "metadata" "METADATA"
+
+# generate short metadata
+generate "PhoneNumberMetadataForTesting.xml" "test_metadata" "metadata" "TEST_METADATA"
+
+echo "\
+pub mod metadata;
+pub mod test_metadata;
+" > "$generated_dir/mod.rs"