Wrapper Function to call function with different number of input and ouput arguments

I am trying to design a wrapper function that takes a function-handle as input as well as a Struct that contains the function's arguments and a reference struct, that contains the desired number of outputs for the function and the fiedldnames, that they should be stored under in a return struct. Something like this:

Is there any way to "resolve" the Struct-Fields of InputData and use them as input-arguments for funcHandle, when the number of fields/input arguments may vary?

Thank you!

function TestStruct = callFunctionUnderTest(funcHandle, InputData, OutputData)

% InputData could be something like this:
% InputData.funcarg1
% InputData.funcarg2
% but with variable number of input arguments/fields!

% OutputData could be something like this:
% OutputData.output1
% OutputData.output2
% OutputData.output3
% but with variable number of outputs/fields!

TestStruct = [];

% check if number of fields in OutputData is equivalent to returned outputs of function
if nargout(funcHandle) ~= length(fieldnames(OutputData))
    error
end

% function call
[TestStruct.(ouput1), TestStruct.(output2), TestStruct.(output3)] = funcHandle(InputData.funcarg1, InputData.funcarg2)
    
end

Answer 1

[Adam Danz]

For the inputs....

Convert the structure to a cell array using C = struct2cell(S)

Then,

funcHandle(InputData.funcarg1, c{:})

The order of the fields in S must be in order of input aguments.

For the outputs...

I don't quite understand what OutputData is or how it's used but if it somehow specifies the number of outputs,

out = cell(1,n);  %where n is the expected number of outputs
[out{:}] = funcHandle(. . .)

If you want the output to be a structure instead of a cell array, see cell2struct().