msbuild - Dynamic Metadata Assignment in an ItemGroup -

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i have itemgroup defined as:

<itemgroup>     <protofiles include="protos\*.proto"/> </itemgroup>

it yields list of .proto files in directory of project. want each item in group include piece of metadata specifies name of file generated based on .proto file. know can this:

<itemgroup>     <protofiles include="protos\*.proto">         <outputfile>%(protofiles.filename).cs</outputfile>     </protofiles> </itemgroup>

but problem is not simple mapping .proto filename output filename. there tricky logic involved need encapsulate somewhere , call when assigning metadata. need like:

<itemgroup>     <protofiles include="protos\*.proto">         <outputfile><getoutputfilename protofilename="%(protofiles.filename)"/></outputfile>     </protofiles> </itemgroup>

the idea being custom getoutputfilename task called in order metadata value.

is possible? barking wrong tree?

i think it's not, try instead passing itemgroup task generate metadata. property functions can operate on metadata values, unfortunately cannot used define metadata.


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