Change PowerPivot data source when deploying from Dev - Staging - Production

Question

We have PowerPivot workbooks we store in SharePoint 2013 Libraries. 
We have a powershell script which automates the deployment of sites and pages. Is there a way using PowerShell (or any scripting language really) to look into the workbook and change the PowerPivot data source when deployment from one environment to
another? (Dev -> Stage -> Prod) We need to update the workbooks to point to our SSAS cubes Dev -> Stage -> Prod respectively.
Thank you for any expert advice you may offer,
Sincerely,
-Craig

Answer 1

Basically, it's an excel file (XLSX) file and you can use excel OM for this.
A simple program (in C# or any language of your choice) can be written to do the following and achieve what you need.
using XLS = Microsoft.Office.Interop.Excel;
string info = null;
XLS.Application application = null;
try
 application = new XLS.Application();
 var book = application.Workbooks.Open(filepath);
 foreach (XLS.WorkbookConnection wc in book.Connections)
  switch (wc.Type)
   case XLS.XlConnectionType.xlConnectionTypeOLEDB:
    info = wc.Name + " " + wc.OLEDBConnection.Connection.ToString() + "\r\n";
    break;
 book.Close();
finally
 if (application != null)
  application.Quit();
Hopefully, this was helpful.