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Able to read foods

Piotr Czajkowski 3 years ago
parent
commit
1ab5b02689
1 changed files with 72 additions and 0 deletions
  1. 72 0
      day21/day21.go

+ 72 - 0
day21/day21.go

@@ -0,0 +1,72 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"log"
+	"os"
+	"strings"
+)
+
+type dish struct {
+	ingredients []string
+	allergens   []string
+}
+
+func readDish(line string) dish {
+	var food dish
+	parts := strings.Split(line, " (contains ")
+	if len(parts) != 2 {
+		log.Fatalf("Invalid line: %s", line)
+	}
+
+	for _, ingredient := range strings.Split(parts[0], " ") {
+		food.ingredients = append(food.ingredients, ingredient)
+	}
+
+	cleanedPart2 := strings.TrimSuffix(parts[1], ")")
+	for _, allergen := range strings.Split(cleanedPart2, ", ") {
+		food.allergens = append(food.allergens, allergen)
+	}
+
+	return food
+}
+
+func readFile(file *os.File) []dish {
+	var foods []dish
+	scanner := bufio.NewScanner(file)
+
+	for scanner.Scan() {
+		line := scanner.Text()
+		if line == "" {
+			break
+		}
+
+		foods = append(foods, readDish(line))
+	}
+	if err := scanner.Err(); err != nil {
+		log.Fatalf("Scanner error: %s", err)
+	}
+
+	return foods
+}
+
+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)
+
+	}
+
+	foods := readFile(file)
+	if err := file.Close(); err != nil {
+		log.Fatalf("Failed to close file: %s", err)
+	}
+
+	fmt.Println(foods)
+}