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Re: Simple ant question.
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Re: Simple ant question.


  • Subject: Re: Simple ant question.
  • From: Q <email@hidden>
  • Date: Sun, 17 Jun 2007 17:26:49 +1000


On 17/06/2007, at 3:10 PM, Ray Kiddy wrote:


On Jun 16, 2007, at 9:26 PM, Q wrote:

I am reworking the WAR and SSDD targets in a build.xml file and am trying to add some error checking. I can verify that individual files like web.xml and LICENSE exist, but I also want to check if all the required frameworks in my ant.frameworks.wo.wolocalroot file exist as jars in /Library/WebObjects/lib while building the war file (like xcode does).

I can create the file list I need to check easily enough, but I am not sure how to get ant to verify that a list of files exist, or even iterate over a list checking them individually. I would prefer to do this without having to add additional taskdef dependencies other than woproject.

Any suggestions?

It is possible to do "if-then-else" style logic in ant. It is just extremely awkward. To tell the truth, every time I need to do it, I need to re-learn it. It is just very non-intuitive. You want to look very carefully at the  documentation for the <condition> task, the <available> task and a few others. Maybe a third-party task handles it more nicely.

Yes, functionality exists in the ant-contrib library I believe, but I am trying to avoid additional dependancies if I can.

Ant is much happier trying to find a resource for you. If you want to check whether the /System/Library/Frameworks/JavaFoundation.framework directory exists and fail if it does not, that is a bit awkward. If you want to say find the framework in one place, or else in another, or finally in a third, ant is much happier about doing that.

For example:
...
...

The words in the "unless" are the names of properties. One can, of course, set a property to equal the property name. One ends up expressing the "if-then-else" logic by setting properties and keying actions off of them.

Not exactly crystal clear, no? But it is possible. It just ends up looking weird.

That's not quite the problem I am trying to solve. I have a list of files (not just one) that isn't known until runtime that gets imported  into a property with <loadfile> that I later use as a <fileset> include list, but I want to verify they exist first. If one doesn't exist then I want to print an error with its name and abort. I need some way to iterate over a <filelist> if I am to use something like <available> which only accepts a single file for evaluation.

-- 

Seeya...Q


Quinton Dolan - email@hidden

Gold Coast, QLD, Australia

Ph: +61 419 729 806



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References: 
 >Simple ant question. (From: Q <email@hidden>)
 >Re: Simple ant question. (From: Ray Kiddy <email@hidden>)

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