//go:build !windows package main import "fmt" // Stub implementations for non-Windows platforms (for testing API without Excel COM). func FillCells(cells map[string]interface{}, fileContent []byte, printArea string) ([]byte, error) { return nil, fmt.Errorf("Excel COM is only available on Windows") } func ReadCells(fileContent []byte) (map[string]interface{}, error) { return map[string]interface{}{"cells": map[string]interface{}{}, "merged": []interface{}{}}, nil }