WiX Make a Sub-Dir a Component Group when running heat - xslt

Question

Hello all my fellow WiX'ers,
I was wondering if it possible, and if so where I can go to learn how to do it, to run heat on a directory and have each directory inside that one be it's own Component Group.
Example:
Root Directory
Sub Dir 1
Sub Sub Dir 1
Sub Sub Dir 2
Sub Sub Dir 3
Sub Dir 2
Sub Sub Dir 1
Sub Sub Dir 2
Sub Sub Dir 3
Sub Dir 3
Sub Sub Dir 1
Sub Sub Dir 2
Sub Sub Dir 3
Then run a heat command in the Build Event of the VS2010 project (example below):
heat dir "Root Directory" -gg -sfrag -srd -dr INSTALLFOLDER -out MyWXS.wxs
and then have that WXS file structured like so:
<Wix xmlns="http://schemas.microsoft.com/wix/2006/wi">
<Fragment>
<DirecotryRef Id="INSTALLFOLDER">
<Directory Id="dir84156489" Name="Sub Dir 1"> ... </Directory>
<Directory Id="dir84156489" Name="Sub Dir 2"> ... </Directory>
<Directory Id="dir84156489" Name="Sub Dir 3"> ... </Directory>
</DirectoryRed>
</Fragment>
<Fragment>
<ComponentGroup Id="Sub Dir 1"> ... </ComponentGroup>
<ComponentGroup Id="Sub Dir 2"> ... </ComponentGroup>
<ComponentGroup Id="Sub Dir 3"> ... </ComponentGroup>
</Fragment>
</wix>
If there is any confusion in my question or if anyone has any additional questions for me please let me know. Thank you and I look forward to hearing from you.
EDIT
Using the following xslt file I am getting the WXS structure that follows after:
**XLST File**
<?xml version="1.0" encoding="utf-8"?>
**WXS File Result**
<Wix>
<Fragment>
<DirectoryRef Id="INSTALLFOLDER">
<Directory Id="dir846546" Name="SubDir1"> ... </Directory>
<Directory Id="dir846546" Name="SubDir2"> ... </Directory>
<Directory Id="dir846546" Name="SubDir3"> ... </Directory>
</DirectoryRef>
</Fragment>
<wix:Fragment xmlns:wix="http://schemas.microsoft.com/wix/2006/wi">
<wix:ComponentGroup Id="SubDur1"> ... </wix:ComponentGroup>
</wix:Fragment>
<wix:Fragment xmlns:wix="http://schemas.microsoft.com/wix/2006/wi">
<wix:ComponentGroup Id="SubDur2"> ... </wix:ComponentGroup>
</wix:Fragment>
<wix:Fragment xmlns:wix="http://schemas.microsoft.com/wix/2006/wi">
<wix:ComponentGroup Id="SubDur3"> ... </wix:ComponentGroup>
</wix:Fragment>
</Wix>
No matter what I do I cannot get the Directories to be created as component groups...

Answer 1

Heat can do an XSL transform before emitting its output. Just add the -t transform.xsl argument.
All that's needed is to append a few component groups to the output. Generate a component group by matching on a first-level directory and then referencing all of the descendent components.
See the XSL for my answer to a similar question.