build.xml

<project default="go">

  <property name="classpath" value="/usr/local/opt/antlr/antlr-4.13.2-complete.jar"/>
  <property name="build.dir" value="build" />
  <property name="classes.dir" value="${build.dir}/classes" />
  <property name="jar.dir" value="${build.dir}/jar" />
  <property name="src.dir" value="src" />
  <property name="srcgen.dir" value="${build.dir}/grammar" />

  <target name="clean">
    <delete dir="${build.dir}"/>
  </target>

  <target name="antlr">
    <mkdir dir="${srcgen.dir}"/>
    <exec executable="antlr">
      <arg value="-o"/>
      <arg value="${srcgen.dir}"/>
      <arg value="-package"/>
      <arg value="com.dogatech.napiwrapper.grammar"/>
      <arg value="${src.dir}/napiwrapper.g4"/>
    </exec>
  </target>

  <target name="compile">
    <mkdir dir="${classes.dir}"/>
    <javac includeantruntime="false" destdir="${classes.dir}">
      <classpath>
        <pathelement path="${classpath}"/>
      </classpath>
      <src path="${srcgen.dir}"/>
      <src path="${src.dir}"/>
    </javac>
  </target>

  <target name="jar">
    <mkdir dir="${jar.dir}"/>
    <jar destfile="${jar.dir}/SoulSifternapiwrapperTool.jar" basedir="build/classes">
      <manifest>
        <attribute name="Main-Class" value="com.dogatech.soulsifter.napiwrapper.SoulSifterWrapperTool"/>
        <attribute name="Class-Path" value="${classpath}"/>
      </manifest>
    </jar>
  </target>

  <target name="run">
    <java jar="${jar.dir}/SoulSifternapiwrapperTool.jar" fork="true"/>
  </target>

  <target name="all">
    <antcall target="clean"/>
    <antcall target="antlr"/>
    <antcall target="compile"/>
    <antcall target="jar"/>
    <antcall target="run"/>
  </target>

  <target name="go">
    <antcall target="compile"/>
    <antcall target="jar"/>
    <antcall target="run"/>
  </target>

  <target name="gui">
    <antcall target="clean"/>
    <antcall target="antlr"/>
    <antcall target="compile"/>
    <exec executable="java">
      <arg value="-classpath"/>
      <arg value="${classpath}:${classes.dir}"/>
      <arg value="org.antlr.v4.runtime.misc.TestRig"/>
      <arg value="com.dogatech.napiwrapper.grammar.napiwrapper"/>
      <arg value="header"/>
      <arg value="-gui"/>
      <redirector input="${file}"/>
    </exec>
  </target>

</project>