excel_converter tool created

cmd/excel_converter/main.go

@@ -0,0 +1,55 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"log"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"git.ecogood.org/andreas.schroepfer/excelConverter/pkg/loader"
+)
+
+func main() {
+	inFile, outFile := parseArgs()
+	xf, err := os.Open(inFile)
+	if err != nil {
+		log.Fatal("cannot open file:", err)
+	}
+	defer xf.Close()
+	eBalance, err := loader.XLSX(xf, nil)
+	if err != nil {
+		fmt.Println("errors when loading from excel:")
+		fmt.Println(err)
+	}
+
+	out, err := os.OpenFile(outFile, os.O_CREATE, 0666)
+	fmt.Println("createFileErr:", err)
+	eBalance.EncodeJSON(out)
+	out.Close()
+}
+
+func parseArgs() (inFile, outFile string) {
+	flag.Parse()
+	args := flag.Args()
+	switch len(args) {
+	case 0:
+		fmt.Println("you need to provide an input-file")
+		fmt.Println("the output is optional")
+		fmt.Println("exel_converter [input] [[output]]")
+		os.Exit(1)
+	case 1:
+		inFile, outFile = args[0], fmt.Sprintf("%s.json", args[0])
+	case 2:
+		inFile, outFile = args[0], args[1]
+	default:
+		fmt.Println("warning: just the first 2 arguments are used!")
+		fmt.Println("exel_converter [input] [[output]]")
+	}
+	if !strings.EqualFold(".xlsx", filepath.Ext(inFile)) {
+		fmt.Println("input needs to be an xlsx-file!")
+		os.Exit(2)
+	}
+	return inFile, outFile
+}