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- package main
- import (
- "bufio"
- "fmt"
- "log"
- "os"
- )
- type move struct {
- direction byte
- steps int
- }
- func readInput(file *os.File) []move {
- scanner := bufio.NewScanner(file)
- var moves []move
- for scanner.Scan() {
- line := scanner.Text()
- if line == "" {
- continue
- }
- var current move
- n, err := fmt.Sscanf(line, "%c %d", ¤t.direction, ¤t.steps)
- if n != 2 || err != nil {
- log.Fatal("Can't parse cd:", err)
- }
- moves = append(moves, current)
- }
- return moves
- }
- func main() {
- if len(os.Args) < 2 {
- log.Fatal("You need to specify a file!")
- }
- filePath := os.Args[1]
- file, err := os.Open(filePath)
- if err != nil {
- log.Fatalf("Failed to open %s!\n", filePath)
- }
- moves := readInput(file)
- fmt.Println(moves)
- }
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