Settings file to be used in WIX and InstallShield

I've create a setup with WIX and i have a wxi file where i define some properties for the installer. Some of them are read by a custom action and used there. So the variables defined in the wxi file are set as some basic properties values in the main file.

Config File:

<?define MyVariable="fileName.txt" ?>

Main File:

 <Property Id="MyVariableProperty" Value="$(var.MyVariable)"/>

Now i want to create the same setup but using InstallShi开发者_高级运维led, and i want to use the same file with all the settings, or a similar one in order to avoid duplicating the same information.

My question is how can this be achieved ? What kind of file i should use in order to be able to read the values from it and set them as properties without any custom actions involved, in both WIX and InstallShield.

Thanks.

This is a build automation issue and I know 2 paths to solve it.

1) Place the properties in merge modules and then use product configurations and release flags to drive which module gets merged into the installer.

2) Write a build step that parses the XPIs out of the wxs/wxi and updates the installer project. This can be done with the IS COM Automation Interface, DTF ( Binary ISM ) and XPath DOM ( XML ISM ).