CODEWITHSUNDEEP
wix
Andrey Bushman
Andrey Bushman

Reputation: 12486

WiX: is it possible to use the variable name as a part of other variable name?

I wrote this in my WiX project file (I simplified my examples):

<?define info = R172 ?>
<?define var1="$(var.info.TargetPath)" ?>
<?define var2="$(var.info.TargetDir)" ?>

I would like the info will be expanded by preprocessor into such variant:

<?define var1="$(var.R172.TargetPath)" ?>
<?define var2="$(var.R172.TargetDir)" ?>

But I get the error:

Undefined preprocessor variable $(var.info.TargetPath).

This variant doesn't work too:

<?define var1="$(var.$(var.info).TargetPath)" ?>
<?define var2="$(var.$(var.info).TargetDir)" ?>

Also I have tried foreach using:

<?foreach info in R172?>
<?define var1="$(var.info.TargetPath)" ?>
<?define var2="$(var.info.TargetDir)" ?>
<?endforeach?>

But I get the same problem.

Can I do the similar substitution somehow?

UPD

I.e. I want to use it for working with referenced projects through the foreach:

<!-- The list of the names of referensed projects -->
<?define ACAD_VERSIONS=R172;R182;R190?>

<?foreach ACAD in ACAD_VERSIONS?>
  <Feature Id="Feature.$(var.ACAD)" Title="$(var.ACAD)" Level="1">
    <Component Id="cmp$(var.ACAD)" Guid="*" Directory="INSTALLFOLDER">
      <File Id="extension.$(var.ACAD).dll" Source="$(var.$(var.ACAD).TargetPath)"  KeyPath="yes"/>
    </Component>
  </Feature>
<?endforeach?>

Upvotes: 2

Views: 972

Answers (1)

bradfordrg
bradfordrg

Reputation: 1903

Unfortunately the current version of WIX (3.10.2) doesn't appear to support what you are requesting.

Looking at the WIX source code, specifically the file src\tools\wix\PreProcessorCore.cs from WIX310-Debug.zip downloadable from here, it doesn't look like WIX supports recursive name substitution. So you can't do $(var.$(var.something)). Take a look at the function PreprocessString(...) to confirm this for yourself.

You might be able to do something with <?undef ...?>. For example:

<?define var1="$(var.item1)" ?>
<?include CommonFeature.wxs ?>
.
<?undef var1 ?>
<?define var1="$(var.item2)" ?>
<?include CommonFeature.wxs ?>

See the related WIXToolset issue: Nested preprocessor variables.

Upvotes: 1

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