如何将Ant中的文件集拆分为多个集合

Question

我有一组文件,我在一个蚂蚁构建中,我想要分成相同大小的子集.

在不添加自定义任务的情况下,在Ant中执行此操作的简单方法是什么.

例:

文件集包含

TestOne.java
TestTwo.java
TestThree.java
TestFour.java
TestFive.java
TestSix.java

我想要3个文件集

Fileset1

TestOne.java
TestTwo.java

Fileset2

TestThree.java
TestFour.java

Fileset3

TestFive.java
TestSix.java

Answer 1

假设文件的顺序并不重要,并且当您说没有自定义任务时,您不会排除ant 脚本任务,那么从中派生的内容可能是合适的.

<fileset id="Fileset" dir="${basedir}" includes="Test*.java" />

<target name="scr">
    <script language="javascript">
    <![CDATA[
        // Obtain a reference to fileset in the enclosing project
        var fileSet = project.getReference( "Fileset" );

        // Now get matching files.
        var ds = fileSet.getDirectoryScanner( project );
        var includes = ds.getIncludedFiles( );

        var batchSize = 2;
        var batch = 1;
        for ( var i = 0; i < includes.length; i += batchSize )
        {
            // Create a new fileset to hold the sub-Fileset.
            var filesetN = project.createDataType( "fileset" );
            filesetN.setDir( fileSet.getDir( ) );

            // Give the new Fileset an id and associate with the project.
            project.addReference( "Fileset" + batch, filesetN );

            // Populate the sub-Fileset.
            for ( var j = 0; j < batchSize && ( i + j ) < includes.length; j++ )
            {
                filesetN.setIncludes( includes[i + j] );
            }

            batch++;
        }
    ]]>
    </script>

    <!-- Just to illustrate. -->
    <echo message="Set 1: ${toString:Fileset1}" />
    <echo message="Set 2: ${toString:Fileset2}" />
    <echo message="Set 3: ${toString:Fileset3}" />
</target>

鉴于您引用的六个文件,上面给出:

scr:
     [echo] Set 1: TestFive.java;TestFour.java
     [echo] Set 2: TestOne.java;TestSix.java
     [echo] Set 3: TestThree.java;TestTwo.java

我没有想出一个纯粹的蚂蚁方式来实现这一目标.您可以考虑使用ant-contrib,它是一组相当广泛使用的扩展,适用于循环和可变属性.

最终评论,对于您的示例集,您可以获得所需的效果,但它不会超出三个Fileset.使用first和last 资源集合.

<target name="reso">
    <first id="Fileset1" count="2">
        <fileset refid="Fileset" />
    </first>
    <last id="Fileset3" count="2">
        <fileset refid="Fileset" />
    </last>
    <difference id="Fileset2">
        <resources refid="Fileset" />
        <resources refid="Fileset1" />
        <resources refid="Fileset3" />
    </difference>
</target>