如何在Ant中使用类似数组或列表的内容？ [英] How can I use something like an array or list in Ant?

问题描述

我在Ant脚本中有一个字符串列表（例如 piyush，kumar），我想为其分配 piyush 到var1，例如 < var name = var1 value = piyush /> 和 kumar 到var2，例如< var name = var2 value = kumar /> 。

到目前为止，我正在使用如下所示的构建文件：

 <？xml version = 1.0？> 
<项目名称= cutter默认= cutter> 
< target name = cutter> 
< for list = piyush，kumar param = letter> 
< sequential> 
< echo> var1 @ {letter}< / echo> 
< / sequential> 
< / for> 
< / target> 
< / project> 
  

我不确定如何进行此操作-有任何建议吗？

解决方案

以下是使用ant-contrib的示例变量和 数学任务：

 < var name = index value = 1 /> 
< for list = piyush，kumar param = letter> 
< sequential> 
<属性名称= var $ {index} value = @ {letter} /> 
<数学结果=索引操作数1 = $ {索引}操作= +操作数2 = 1数据类型= int /> 
< / sequential> 
< / for> 
 
< echoproperties prefix = var /> 
  

输出：

  [echoproperties] var1 = piyush 
 [echoproperties] var2 = kumar 
  

但是，这全都是非Ant的-设置完这些后，您将如何处理它们？

您可能会考虑使用Ant 脚本任务，而不是这种非声明性处理。 / p>

I have a list of strings (e.g. "piyush,kumar") in an Ant script for which I want to assign piyush to var1 like <var name="var1" value="piyush"/> and kumar to var2 like <var name="var2" value="kumar"/>.

So far, I'm using a buildfile like the following:

<?xml version="1.0"?>
<project name="cutter" default="cutter">
<target name="cutter">
<for list="piyush,kumar" param="letter">
  <sequential>
    <echo>var1 @{letter}</echo>
  </sequential>
</for>
</target>
</project>

I'm not sure how to progress this - any suggestions?

解决方案

Here's an example using an ant-contrib variable and the math task:

<var name="index" value="1"/>
<for list="piyush,kumar" param="letter">
  <sequential>
    <property name="var${index}" value="@{letter}" />
    <math result="index" operand1="${index}" operation="+" operand2="1" datatype="int" />
  </sequential>
</for>

<echoproperties prefix="var" />

Output:

[echoproperties] var1=piyush
[echoproperties] var2=kumar

This is all very un-Ant like though - once you've set these what are you going to do with them?

You might consider using an Ant script task instead for this sort of non-declarative processing.

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