Able to read input

18/code.go

@@ -0,0 +1,54 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"log"
+	"os"
+	"strings"
+)
+
+type Dig struct {
+	direction string
+	length    int
+	color     string
+}
+
+func readInput(file *os.File) []Dig {
+	scanner := bufio.NewScanner(file)
+	var plan []Dig
+
+	for scanner.Scan() {
+		line := scanner.Text()
+		if line == "" {
+			break
+		}
+
+		var current Dig
+		n, err := fmt.Sscanf(line, "%s %d %s", &current.direction, &current.length, &current.color)
+		if n != 3 || err != nil {
+			log.Fatalf("Wrong input: %s\n%s", line, err)
+		}
+
+		current.color = strings.Trim(current.color, "()")
+		plan = append(plan, current)
+	}
+
+	return plan
+}
+
+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)
+
+	}
+
+	plan := readInput(file)
+	fmt.Println(plan)
+}