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From Peter Reilly <peterrei...@apache.org>
Subject Re: Reading file attributes
Date Wed, 29 Sep 2004 12:08:38 GMT
You need to use ant 1.6 or higher.

Peter

Lennart Hellström (HF/EBC) wrote:

> 
>  
>
>>On Sep 28, 2004, at 5:04 AM, Lennart Hellström (HF/EBC) wrote:
>>    
>>
>>>I want to copy a file to a destination file only if the destination
>>>file is not readonly (it might be checked in on the version control 
>>>system)
>>>
>>>I tried using <copy> with failOnError="false" but strangely 
>>>      
>>>
>>the build
>>    
>>
>>>fails anyway when the destination file is readonly.
>>>
>>>Is there some way to look at the file's attributes before 
>>>      
>>>
>>deciding to
>>    
>>
>>>copy or not?
>>><Attrib> seems to only change the file attributes, and 
>>>      
>>>
>>that's not what 
>>    
>>
>>>I want.
>>>      
>>>
>>There may be other ways to do this, but as an example of writing a 
>>custom selector I do this:
>>
>>   <typedef name="readonly"
>>            classname="ReadOnlySelector"
>>            classpath="build/classes"
>>   />
>>
>>   <copy todir="build/copy">
>>     <fileset dir="src">
>>       <readonly/>
>>     </fileset>
>>   </copy>
>>
>>Where ReadOnlySelector is this:
>>
>>import org.apache.tools.ant.types.selectors.FileSelector;
>>import org.apache.tools.ant.BuildException;
>>
>>import java.io.File;
>>
>>public class ReadOnlySelector implements FileSelector {
>>   public boolean isSelected(File basedir,
>>                             String filename,
>>                             File file) throws BuildException {
>>     return !file.canWrite() && file.canRead();
>>   }
>>}
>>
>>    
>>
>
>Fine, thanks!
>With that implemented I now get the following error in my ant script:
>"The <fileset> data type doesn't support the nested "readonly" element. at line
296"
>
>Is there something else I need to do to make ant accept my custom selection?
>
>/ Lelle
>
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>
>
>  
>


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