将字符串列表映射到依赖集的文件资源集合 [英] Map a list of strings to a collection of file resources for a dependset

问题描述

背景:我从 XML 文件中读取名称，并希望将它们映射到构建任务的源和目标路径.我不是一个有经验的 Ant 用户，我正在寻找一种方法是

Background: I read names from an XML file and want to map them to source and target paths for a build task. I am not an experienced Ant user and I'm looking for a way to that is

1. 可读"
2. 健壮和
3. 可用于确定目标是否已过期(最好使用来自 Ant 或 Ant Contrib 的任务).

示例 xml:

<list><value>The first name<value><value>The second name</value></list>

期望的结果集:

${dir}/The first name.${ext}
${dir}/The second name.${ext}

我可以使用 pathconvert 或 mappedresources 构建每个文件的路径，但我无法将任一结果映射回我可以的文件资源集合在 dependset 中使用.这个问题有优雅的解决方案吗?

I can build the path to each file using pathconvert or mappedresources but I haven't been able to map either result back to a collection of file resources that I can use in a dependset. Is there an elegant solution to this problem?

推荐答案

ANT 不是一种编程语言.易于嵌入 groovy.

ANT is not a programming language. Easy to embed groovy.

├── build.xml
├── sample.xml
├── src
│   ├── file1.txt
│   ├── file2.txt
│   └── file3.txt
└── target
    ├── file1.txt
    └── file2.txt

如下运行

$ ant
Buildfile: /.../build.xml

install-groovy:

build:
     [copy] Copying 2 files to /.../target
     [copy] Copying /.../src/file1.txt to /.../target/file1.txt
     [copy] Copying /.../src/file2.txt to /.../target/file2.txt

BUILD SUCCESSFUL

示例.xml

<list>
<value>file1</value>
<value>file2</value>
</list>

build.xml

<project name="demo" default="build">

    <!--
    ================
    Build properties
    ================
    -->
    <property name="src.dir"   location="src"/>
    <property name="src.ext"   value="txt"/>
    <property name="build.dir" location="target"/>

    <available classname="org.codehaus.groovy.ant.Groovy" property="groovy.installed"/> 

    <!--
    ===========
    Build targets
    ===========
    -->    
    <target name="build" depends="install-groovy" description="Build the project">
        <taskdef name="groovy" classname="org.codehaus.groovy.ant.Groovy"/>
        <groovy>
        def xmllist = new XmlSlurper().parse(new File("sample.xml"))

        ant.copy(todir:properties["build.dir"], verbose:true, overwrite:true) {
           fileset(dir:properties["src.dir"]) {
              xmllist.value.each {
                include(name:"${it}.${properties["src.ext"]}") 
              }
           }
        }
        </groovy>
    </target>

    <target name="clean" description="Cleanup project workspace">
       <delete dir="${build.dir}"/>
    </target>

    <target name="install-groovy" description="Install groovy" unless="groovy.installed">
        <mkdir dir="${user.home}/.ant/lib"/>
        <get dest="${user.home}/.ant/lib/groovy.jar" src="http://search.maven.org/remotecontent?filepath=org/codehaus/groovy/groovy-all/2.3.6/groovy-all-2.3.6.jar"/>
        <fail message="Groovy has been installed. Run the build again"/>
    </target>

</project>

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