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From b.@spamcop.net
Subject Re: nested properties anyone?
Date Thu, 15 Aug 2002 17:17:47 GMT
Sorry the line actually should read

<property name="build.host" value="${${hostname}}"/>

And it doesn't work this way ether

Bob

Quoting bo@spamcop.net:

> Problem:
> From the list of the predefined properties key=value select one based on
> the
> value of some other property and use it as a default
> 
> Example:
> I have a list of servers (hosts.properties), where key is an actual
> hostname
> (obtained from hostname command) and value is a domain, e.g.
> host_one=host_one.somewhere.com
> host_two=host_two.some.place.else.com
> I want to determine on which machine I'm running the script and use a full
> domain name further in the script.
> 
> Solution?
> 1. <property file="hosts.properties"/>
> 2. <exec outputproperty="hostname" executable="hostname"/>
> 3. Now I have a ${hostname} and I want to assign its value to the property
> build.host that I use in my script. My first reaction was to do this:
> <property name="build.host" refid="${${hostname}}"/>
> Well it didn't work because curleys are evaluated only once and I'm getting
> the
> value of build.host literaly as "${hostname}"
> Is there any other way? Any way? 
> And I think that it would be nice feature to reevaluate the nested brackets
> 
> Bob Stone
> 
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