Re: Checking if a Target Exists

[Steve Amerige]

Hi Vimil,

Thanks for the code!  I'm pretty sure the fifth line of the script should be:
    var targetname = attributes.get("targetname");

I haven't tried running it yet today, but I will test it and let you know how 
it works.

Chris Holman wrote:
<condition property="targetExists">
<typefound name="${targetName}"/>
</condition>

I've used this to check for a macrodef, not sure about targets?

The conditions <http://ant.apache.org/manual/Tasks/conditions.html> page tells us: "Types include tasks, datatypes, scriptdefs, 
macrodefs and presetdefs."  So, I'm not sure if target is a task.  I'll check it out.

Thanks to all!

Steve Amerige
SAS Institute, Deployment Software Development

On 11/3/2011 12:02 PM, Vimil Saju wrote:
Here is an example, I havent tested it though

<scriptdef name="hastarget" language="javascript">
          <attribute name="targetname" />
          <attribute name="property" />
          <![CDATA[
            var targetname = attributes.get("property");
    if(project.getTargets().containsKey(targetname)) {
project.setProperty(attributes.get("property"), "true");
    }           
          ]]>
</scriptdef>

the scriptdef can be then invoked as folows

<hastarget targetname="mytarget" property="targetExists"/>

the property 'targetExists' will be set to true if the target 'mytarget' is 
present in the project. Otherwise it will not be set.


________________________________
From: Steve Amerige<steve.amer...@sas.com>
To: Ant Users List<user@ant.apache.org>; Vimil Saju<vimils...@yahoo.com>
Sent: Thursday, November 3, 2011 7:27 AM
Subject: Re: Checking if a Target Exists


Hi Vimil,

Thanks for the feedback.  Any specifics on just how to do what you
     mention (even if untested)?

Thanks again,
Steve Amerige
SAS Institute, Deployment Software Development

On 11/3/2011 9:55 AM, Vimil Saju wrote:
I think you can use the scriptdef task to do this. You can write a script 
within the scriptdef object to access the methods of the project object. The 
project object has methods to list the targets defined under the project, which 
you can use to test if a given target exists.
Btw antcall does not launch a new jvm, it only reloads the build.xml. 
________________________________
From: Steve Amerige<steve.amer...@sas.com>  To: Ant Users 
List<user@ant.apache.org>  Sent: Thursday, November 3, 2011 4:52 AM
Subject: Checking if a Target Exists Hi all, I want to be able to check if a 
target exists and hope you can help.  I'm looking for a generic solution that 
doesn't rely any knowledge of the target name to be checked.  It is not 
possible to modify the target code.  And, I'd like to avoid any solutions that 
cause the entire JVM to be loaded (e.g., as with antcall). My environment is 
Ant 1.7 and allows for the use of Ant-Contrib and Groovy. Any ideas on how to 
do this?  Even better, any solutions anyone have to share?! Thanks,
Steve Amerige
SAS Institute, Deployment Software Development