code.go 757 B

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  1. package main
  2. import (
  3. "bufio"
  4. "fmt"
  5. "log"
  6. "os"
  7. )
  8. type move struct {
  9. direction byte
  10. steps int
  11. }
  12. func readInput(file *os.File) []move {
  13. scanner := bufio.NewScanner(file)
  14. var moves []move
  15. for scanner.Scan() {
  16. line := scanner.Text()
  17. if line == "" {
  18. continue
  19. }
  20. var current move
  21. n, err := fmt.Sscanf(line, "%c %d", &current.direction, &current.steps)
  22. if n != 2 || err != nil {
  23. log.Fatal("Can't parse cd:", err)
  24. }
  25. moves = append(moves, current)
  26. }
  27. return moves
  28. }
  29. func main() {
  30. if len(os.Args) < 2 {
  31. log.Fatal("You need to specify a file!")
  32. }
  33. filePath := os.Args[1]
  34. file, err := os.Open(filePath)
  35. if err != nil {
  36. log.Fatalf("Failed to open %s!\n", filePath)
  37. }
  38. moves := readInput(file)
  39. fmt.Println(moves)
  40. }