从字符串中提取字符（Ant-Eclipse）

Question

I'm new to Ant and i need some help. I'm receiving a string through an input (dir = 4.2.1), and I want to divide it and use like two variables (dir1 = 4.2 and dir2 = 4.2.1)

    <input message="Digite o nome do arquivo WAR que sera gerado: "
           defaultvalue="docflow"
           addproperty="nome">
    </input>

    <input message="Digite o caminho onde o WAR sera armazenado: "             
           addproperty="dir">
    </input>


   <mkdir dir="${docflow4-web-home}/${dir1}/${dir2}/deploy"/>

Answer 1

Here is one way.

<project default="test">

    <target name="test">

        <property name="dir" value="4.2.1"/>

        <loadresource property="dir1">
          <string value="${dir}"/>
          <filterchain>
            <tokenfilter>
              <replaceregex pattern="(.*)\.[^\.]+" replace="\1"/>
            </tokenfilter>
          </filterchain>
        </loadresource>

        <echo message="${dir1}"/>
        <echo message="${dir}"/>

    </target>

</project>

Output:

test:
     [echo] 4.2
     [echo] 4.2.1

Alternatively, you could use propertyregx from antcontrib.