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main.go
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main.go
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package main
import (
"fmt"
"os"
"strconv"
"github.com/michaelweidmann/advent-of-code-2019/day01"
"github.com/michaelweidmann/advent-of-code-2019/day02"
"github.com/michaelweidmann/advent-of-code-2019/day03"
)
func main() {
arguments := os.Args
if len(arguments) != 3 {
printUsage(arguments[0])
os.Exit(1)
}
dayNumber, _ := strconv.Atoi(arguments[1])
switch dayNumber {
case 1:
day01.Run(arguments[2])
break
case 2:
day02.Run(arguments[2])
break
case 3:
day03.Run(arguments[2])
break
default:
printUsage(arguments[0])
os.Exit(1)
}
}
func printUsage(programName string) {
fmt.Printf("Usage: %s [<day-number>] [<part-number>]\n\n", programName)
fmt.Println("Allowed <day-number> values are: 1 to 24")
fmt.Println("Allowed <part-number> values are: 1 or 2")
}