I would recommend that you use the <script> task to create your own
custom function taking two strings and returning a boolean. You can then
use the System.Version class to actually do the comparison. Something
like this:
<script language="C#">
<code><![CDATA[
[Function("version-greater-or-equal")]
public bool VersionGreaterOrEqual(string version1, string version2)
{
Version v1 = new Version(version1);
Version v2 = new Version(version2);
return v1 >= v2;
}
]]></code>
</script>
You can then call it like this:
<property name="nant.version" value="0.85.1684.0"/>
<property name="nant.currentversion"
value="${assembly::get-version(nant::get-location())}"/>
<if test="${script::version-greater-or-equal(nant.currentversion,
nant.version)}">
<!-- Do something -->
</if>
I'm sure there are other ways too!
--
Edwin G. Castro
Firing Systems Engineer
[EMAIL PROTECTED]
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Jeroen
Zwartepoorte
Sent: Friday, August 13, 2004 8:26 AM
To: Gert Driesen
Cc: [EMAIL PROTECTED]
Subject: Re: [Nant-users] checking nant version
Hi Gert,
Thanks for the quick reply. Still have a question though:
How do i actually check if the current nant version is >= than the
version i need?
I now have this:
<property name="nant.version" value="0.85.1684.0"/>
and
<property name="nant.currentversion" value="${assembly::get-version
(nant::get-location())}"/>
How do i compare these two values? It looks like i could extract the
major, minor, build and revision numbers using the version::get-*
functions, but i still need some sort of string::compare function in
order to actually compare them...
How do i do this? (i don't see any functions in the docs which support
this)
Thanks,
Jeroen
On Fri, 2004-08-13 at 19:06 +0200, Gert Driesen wrote:
> ----- Original Message -----
> From: "Jeroen Zwartepoorte" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Friday, August 13, 2004 4:28 PM
> Subject: [Nant-users] checking nant version
>
>
> > Hi,
> >
> > Is there some example nant XML that checks that nant is actually
> > able to build the project in question? So "nant.version >=
> > 0.85-20040810" for example? So you can tell the user that he has to
> > upgrade his nant if he wants to build the project.
>
> You can use assembly::get-version(nant::get-location()) to get the
> full version of NAnt.
>
> > Seems very useful to me when you're using the latest stuff like
> > filterchains. Also prevents a lot of possible FAQ from appearing on
irc.
>
> I agree. We'll need to think of a more generic way to accomplish this.
>
> > btw: do the nant devs hang around on irc? If so, which server and
> > what channel?
>
> I hang around on the #mono channel on ircd.gimp.org
>
> Gert
>
>
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