Glad to know you're using the resourcecollection stuff in anger and getting
some mileage out of it. Unfortunately it seems you've hit on a genuine lack...
:) Firstly your date-sorted resourcecollection should be a dirset, but then
you still need a decent way to round up the children of those directories. The
easiest way would be to use antcontrib's <for> task to iterate over the
directories and delete each:
(given dirset id=ds and antcontrib ns ac)
<ac:for param="d">
<dirset refid="ds" />
<sequential>
<delete dir="@{ds}" />
</sequential>
</ac:for>
However, you said stock Ant. I was stumped, and was about to write that you
could drop back to scripting or write a Java task or type (such a type might be
nice). Then my younger, more inventive self barged in, gave me a good smack,
and came up with this approach:
(given same dirset id=ds)
<pathconvert refid="ds" property="includes" pathsep="${line.separator}">
<regexpmapper from="(^.*$)" to="\1${file.separator}**" />
</pathconvert>
<echo file="includesfile">${includes}</echo>
<delete>
<files includesfile="includesfile" />
</delete>
<delete file="includesfile" />
Note that if you know that your directories won't have spaces or commas in
their names you could bypass the includesfile and simply
<delete>
<files includes="${includes}" />
</delete>
--oh, except in this case you'd use pathsep="," on your pathconvert.
Whaddya think?
-Matt
--- On Thu, 3/26/09, Michael Delaney <[email protected]> wrote:
> From: Michael Delaney <[email protected]>
> Subject: Delete N directories that match a regexp
> To: "Ant Users List" <[email protected]>
> Date: Thursday, March 26, 2009, 1:09 PM
> I'm look for a way, with using ant
> "out of the box", to find a list of directories and sort
> them via date then deleted the oldest three directories.
>
> Thus far I've been able to sort the directories, take the
> last three but I can't seem to figure out how to delete the
> actual directory; see attached build.xml for an example of
> how far I've gotten.
>
> -----Inline Attachment Follows-----
>
> <project name="project-deletion" default="build">
> <property name="base.dir"
> value="/srv/jboss" />
> <property name="module.name"
> value="myProject" />
>
> <target name="build">
> <antcall target="clean"
> />
> </target>
>
> <target name="get-count">
> <condition
> property="should.clean">
> <resourcecount
> when="greater" count="8">
>
> <fileset dir="${base.dir}">
>
> <include
> name="*-${module.name}/prefix.properties" />
>
> </fileset>
>
> </resourcecount>
> </condition>
> </target>
>
> <target name="clean" depends="get-count"
> if="should.clean">
> <delete
> includeemptydirs="true">
> <first
> count="3">
>
> <sort>
>
> <fileset dir="${base.dir}">
>
> <include
> name="*-${module.name}/*" />
>
> </fileset>
>
> <date
> xmlns="antlib:org.apache.tools.ant.types.resources.comparators"
> />
>
> </sort>
> </first>
> </delete>
> </target>
>
> </project>
>
>
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