ant-如何从macrodef 返回值?

jas*_*ass 5 ant ant-contrib

我需要比较两个字符串 args,我曾经从中获取一个 arg 作为运行时输入(例如platform=windows,ios,mac),另一个具有在build.properties(例如project.supportedplatforms=windows,mac)下定义的值列表。如果条件匹配,那么它应该从一个宏定义到某个目标返回“真”否则“失败”。

<for list="${platform}" param="platformparam" trim="true">
  <sequential>
    <if>
      <isItemExists retToProp="@{platformparam}" />
      <then>
        <antcall target="package.@{platformParam}" />
      </then>
    </if>
  </sequential>
</for>

<macrodef name="isItemExists">
  <attribute name="retToProp" />
  <property name="itemtosearch" value="@{retToProp}" />
  <for list="${project.supportedplatforms}" param="listparam" trim="true">
    <if>
      <equals arg1="@{listparam}" arg2="@{platformparam}" />
      <then>
        <!-- return true -->
      </then>
      <else>
        <!-- return false -->
      </else>
    </if>
  </for>
</macrodef>
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${platforms}并且${project.supportedplatforms}具有相同的值时,它应该调用指定的目标。但是在这个片段中,macrodef-for 循环将执行 n 次,最后分配给什么值@{returnproperty},将抛出目标“build”,如果它发生这种情况并且输入有效,它不会做我的事情,因为 for 循环将按顺序执行。(例如platforms=windows,mac,androidproject.supportedplatforms=ios,android,windows如果我的列表看起来像这样,是否有任何可能的方法来获得我的结果)。

<for list="${platforms}" param="platformparam" trim="true">
  <sequential>
    <isItemExists returnProperty="returnProp" platforms="@{platformparam}" />
    <if>
      <equals arg1="${returnProp}" arg2="true" />
      <then>
        <antcall target="package.@{platformparam}" />
      </then>
    </if>
  </sequential>
</for>

<macrodef name="isItemExists">
  <attribute name="platform" />
  <attribute name="returnProperty" />
  <sequential>
    <var name="@{returnProperty}" unset="true" />
    <for list="${project.supportedplatforms}" param="listparam" trim="true">
      <if>
        <equals arg1="@{listparam}" arg2="@{platform}" />
        <then>
          <property name="@{returnProperty}" value="true" />
        </then>
        <else>
          <property name="@{returnProperty}" value="false" />
        </else>
      </if>
  </sequential>
</macrodef>
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小智 1

<target name="some-test-target">
        <for list="${platform}" param="platformparam" trim="true">
            <sequential>
                <isItemExists platform="@{platformparam}" returnProperty="returnProp" />
                <if>
                    <equals arg1="${returnProp}" arg2="true"/>
                    <then>
                        <antcall target="package.@{platformparam}"/>
                    </then>
                </if>
            </sequential>
        </for>
</target>
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使用sequential任务来运行 ant-contrib 任务,例如:

<macrodef name="isItemExists">
        <attribute name="platform"/>
        <attribute name="returnProperty"/>
        <sequential>
            <var name="@{returnProperty}" unset="true"/>
            <for list="${project.supportedplatforms}" param="listparam" trim="true">
                <sequential>
                <if>
                    <equals arg1="@{listparam}" arg2="@{platform}"/>
                    <then>
                        <property name="@{returnProperty}" value="true"/>
                    </then>
                    <else>
                        <property name="@{returnProperty}" value="false"/>
                    </else>
                </if>
                </sequential>
            </for>
        </sequential>
</macrodef>
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