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Posted to user@ant.apache.org by Guy Catz <Gu...@waves.com> on 2008/08/14 17:56:25 UTC
how can tell if a property is set?
how can tell if a property is set?
I've tried using contrib this -
<if>
<equals arg1="${var}" arg2="" />
<then>
but, if ${var} was never been set, the result is actually FALSE...
I need something like -
<if>
<set var="${var}" />
<then>
...
[http://www.waves.com/Objects/Images/Others/signature_logo.jpg] Guy Catz
Release Manager
Waves Audio Ltd
Tel: +972 3 608 4041
www.waves.com<http://www.waves.com/> www.maxx.com<http://www.maxx.com/> www.sound.org<http://www.sound.org/>
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RE: how can tell if a property is set?
Posted by Martin Gainty <mg...@hotmail.com>.
Guy-
have you had a chance to use the looked at using available ?
http://ant.apache.org/manual/CoreTasks/available.html
and test with condition..
http://ant.apache.org/manual/CoreTasks/condition.html
?
HTH
Martin
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> From: Guy.catz@waves.com
> To: user@ant.apache.org
> Date: Thu, 14 Aug 2008 11:56:25 -0400
> Subject: how can tell if a property is set?
>
> how can tell if a property is set?
>
> I've tried using contrib this -
> <if>
> <equals arg1="${var}" arg2="" />
> <then>
>
> but, if ${var} was never been set, the result is actually FALSE...
>
> I need something like -
> <if>
> <set var="${var}" />
> <then>
> ...
>
>
> [http://www.waves.com/Objects/Images/Others/signature_logo.jpg] Guy Catz
> Release Manager
>
>
> Waves Audio Ltd
> Tel: +972 3 608 4041
> www.waves.com<http://www.waves.com/> www.maxx.com<http://www.maxx.com/> www.sound.org<http://www.sound.org/>
>
> This e-mail transmission, and any documents, files or previous e-mail messages attached to it, may contain confidential or privileged information. If you are not the intended recipient, or a person responsible for delivering it to the intended recipient, you are hereby notified that any disclosure, copying, distribution or use of any of the information contained in or attached to this message is STRICTLY PROHIBITED. If you have received this transmission in error, please immediately notify the sender and delete the e-mail and attached documents.
>
>
>
>
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>
>
>
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>
>
>
>
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Re: how can tell if a property is set?
Posted by "Scot P. Floess" <fl...@mindspring.com>.
Try this:
<if>
<isset property = "var"/>
<then>
...
Note no ${var} just var
HTH,
Flossy
On Thu, 14 Aug 2008, Guy Catz wrote:
> how can tell if a property is set?
>
> I've tried using contrib this -
> <if>
> <equals arg1="${var}" arg2="" />
> <then>
>
> but, if ${var} was never been set, the result is actually FALSE...
>
> I need something like -
> <if>
> <set var="${var}" />
> <then>
> ...
>
>
> [http://www.waves.com/Objects/Images/Others/signature_logo.jpg] Guy Catz
> Release Manager
>
>
> Waves Audio Ltd
> Tel: +972 3 608 4041
> www.waves.com<http://www.waves.com/> www.maxx.com<http://www.maxx.com/> www.sound.org<http://www.sound.org/>
>
> This e-mail transmission, and any documents, files or previous e-mail messages attached to it, may contain confidential or privileged information. If you are not the intended recipient, or a person responsible for delivering it to the intended recipient, you are hereby notified that any disclosure, copying, distribution or use of any of the information contained in or attached to this message is STRICTLY PROHIBITED. If you have received this transmission in error, please immediately notify the sender and delete the e-mail and attached documents.
>
>
>
>
>
>
>
>
>
>
>
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Scot P. Floess
27 Lake Royale
Louisburg, NC 27549
252-478-8087 (Home)
919-754-4592 (Work)
Chief Architect JPlate http://sourceforge.net/projects/jplate
Chief Architect JavaPIM http://sourceforge.net/projects/javapim
Architect Keros http://sourceforge.net/projects/keros
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Re: how can tell if a property is set?
Posted by Steven Guitar <st...@mac.com>.
Guy,
something else i have started using is if i plan to call a target if a
property is set, i put the if/unless attributes on that target like so:
<target name="displayPropIfExists" if=${myprop} >
<echo>${myprop}</echo>
</target>
this is a silly example, but the idea is that if and only if the
property exists, the given target will run. unless is used in the
opposite manner.
On Aug 14, 2008, at 10:56 AM, Guy Catz wrote:
> how can tell if a property is set?
>
> I've tried using contrib this -
> <if>
> <equals arg1="${var}" arg2="" />
> <then>
>
> but, if ${var} was never been set, the result is actually FALSE...
>
> I need something like -
> <if>
> <set var="${var}" />
> <then>
> ...
>
>
> [http://www.waves.com/Objects/Images/Others/signature_logo.jpg] Guy
> Catz
> Release Manager
>
>
> Waves Audio Ltd
> Tel: +972 3 608 4041
> www.waves.com<http://www.waves.com/> www.maxx.com<http://www.maxx.com/
> > www.sound.org<http://www.sound.org/>
>
> This e-mail transmission, and any documents, files or
> previous e-mail messages attached to it, may contain confidential or
> privileged information. If you are not the intended recipient, or a
> person responsible for delivering it to the intended recipient, you
> are hereby notified that any disclosure, copying, distribution or
> use of any of the information contained in or attached to this
> message is STRICTLY PROHIBITED. If you have received this
> transmission in error, please immediately notify the sender and
> delete the e-mail and attached documents.
>
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>
>
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>
>
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