如何將文件名預先加載到Ant中的文件本身？

Question

有什麼辦法可以用Ant來預先給每個文件的名字加上它？所以foo.txt的會去從

bar 

到

// foo.txt 
bar 

這需要對一組文件不能被硬編碼到ant腳本工作。

Answer 1

由於您要動態確定要使用的文件，我建議您獲取ant-contrib.jar並使用for任務。我應該指出，這將在評論中寫出文件的完整路徑。

<!-- Sample usage --> 
<target name="run"> 
    <prepend> 
    <!-- Assuming you are interested in *.txt files in the resource directory --> 
    <fileset dir="resource"> 
     <include name="**/*.txt"/> 
    </fileset> 
    </prepend> 
</target> 

<!-- Import the definitions from ant-contrib --> 
<taskdef resource="net/sf/antcontrib/antlib.xml"> 
    <classpath> 
    <pathelement location="../ant-contrib*.jar"/> 
    </classpath> 
</taskdef> 

<!-- Create the prepend task --> 
<macrodef name="prepend"> 
    <!-- Declare that it contains an element named "files". Implicit means it needn't be named --> 
    <element name="files" implicit="yes"/> 
    <sequential> 
    <!-- For loop, assigning the value of each iteration to "file" --> 
    <for param="file"> 
     <!-- Give the for loop the files --> 
     <files/> 
     <sequential> 
     <!-- Load the contents of the file into a property --> 
     <loadfile property="@{file}-content" srcfile="@{file}"/> 
     <!-- Echo the header you want into the file --> 
     <echo message="// @{file}${line.separator}" file="@{file}"/> 
     <!-- Append the original contents to the file --> 
     <echo message="${@{file}-content}" append="true" file="@{file}"/> 
     </sequential> 
    </for> 
    </sequential> 
</macrodef>