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From: "Rebhan, Gilbert" <Gilbert.Rebhan@huk-coburg.de>
To: 'Ant Users List' <user@ant.apache.org>
Date: Thu, 29 Oct 2009 14:00:11 +0100
Subject: RE: Alternative for <available> taks to check a pattern of file
 existence
Thread-Topic: Alternative for <available> taks to check a pattern of file
 existence
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P.S. :=20

you may also check for existence of specific files
via fileset if that is enough for your purpose =3D

<fileset dir=3D"your/path" includes=3D"**/*.txt" id=3D"checkdir"/>

<condition property=3D"nofiles">
 <equals arg1=3D"${toString:checkdir}" arg2=3D"" />
</condition>

and then f.e. =3D

<fail if=3D"nofiles" message=3D"No TxtFiles around !!" />

or

<target name=3D"foo" if=3D"nofiles">
..

or

<target name=3D"foo" unless=3D"nofiles">


Regards, Gilbert


-----Original Message-----
From: cvsusr [mailto:spers@rediffmail.com]=20
Sent: Thursday, October 29, 2009 12:00 PM
To: user@ant.apache.org
Subject: Alternative for <available> taks to check a pattern of file existe=
nce

/*
Hi,

I need to check for existence of files with some extension say *.txt in a
folder and if present execute a target..

I found only <available> task which checks for the existence of single file
only when the name of the file known. I wanted to check whether *.txt is
present or not.. if present execute a target..
*/

one possible solution, the extension you're are looking for is
part of the glob attribute =3D

your/path/**/*.yourextension means recursive
your/path/*.yourextension means non recursive

examplescript, look for files with .xml extension in C:/Temp
and set property with number of found files
the condition checks whether there are *.xml files in C:/Temp
 - means property set by scriptdef !=3D 0
and then your targets use if / unless with condition property

<project name=3D"bla" default=3D"main" basedir=3D".">

  <scriptdef name=3D"filecount" language=3D"ruby">
    <attribute name=3D"glob"/>
    <attribute name=3D"property"/>
    $project.setProperty "#{$attributes.get('property')}",
      Dir.glob("#{$attributes.get('glob')}").length.to_s
  </scriptdef>

  <target name=3D"checkfiles">
    <filecount glob=3D"C:/Temp/**/*.xml" property=3D"xmlfiles"/>
    <condition property=3D"files">
      <not>
        <equals arg1=3D"${xmlfiles}" arg2=3D"0" />
      </not>
    </condition>
  </target>

  <target name=3D"foo" if=3D"files">
    <echo>${xmlfiles} files found ..</echo>
  </target>

  <target name=3D"foobar" unless=3D"files">
    <echo>no files found ..</echo>
  </target>

  <target name=3D"main" depends=3D"checkfiles,foo,foobar"/>
</project>


Regards, Gilbert
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