Uploads PBIX files to a PowerBi report server and sets the data source

An Excel workbook that contains a Power Pivot model stores an entire Analysis Services backup (ABF) inside the ZIP member 'xl/model/item.data'. Legacy Power BI files store the same structure in a member named 'DataModel'. This script reads that backup and reports what is inside it: * the backup-log header (bytes 72..4096, UTF-16, null-padded XM... More info