How to add date while creating a folder Nant - nant

Question

How to add current date while creating a folder in nant?
I have <mkdir dir="${Test.Dir}" /> and as a result I need to get the folder created with name
"TestDir-04-04-2022".
Any advise? Thanks.

Answer 1

In my case I only found solution to use embeded C# code with custom function. Possible solutions:
Variant 1:
<?xml version="1.0" encoding="utf-8"?>
<project name="Deployment" default="Deploy">
<script language="C#" prefix="datetime">
<code>
<![CDATA[
[Function("now-formatted")]
public static string GetNowAsString(string format) {
return DateTime.Now.ToString(format);
}
]]>
</code>
</script>
<target name="DateTimeTest">
<property name="Test.Dir" value="${'TestDir-' + datetime::now-formatted('dd-MM-yyyy')}" />
<echo message="${Test.Dir}" />
<mkdir dir="${Test.Dir}" />
</target>
</project>
Variant 2:
<?xml version="1.0" encoding="utf-8"?>
<project name="Deployment" default="Deploy">
<script language="C#" prefix="datetime">
<code>
<![CDATA[
[Function("format")]
public static string GetNowAsString(DateTime datetime, string format) {
return datetime.ToString(format);
}
]]>
</code>
</script>
<target name="DateTimeTest">
<property name="Test.Dir" value="${'TestDir-' + datetime::format(datetime::now(), 'dd-mm-yyyy')}" />
<echo message="${Test.Dir}" />
<mkdir dir="${Test.Dir}" />
</target>
</project>
Note: datetime::now - is standard nant function.
Output:
DateTimeTest:
[echo] TestDir-08-23-2022
[mkdir] Creating directory 'C:\Test\TestDir-08-23-2022'.
BUILD SUCCEEDED
Total time: 0.2 seconds.