20223 day1

2023/go/main.go

@@ -0,0 +1,83 @@
+package main
+
+import (
+	"fmt"
+//	"math/rand"
+	"os"
+//	"strings"
+//	"time"
+	"adventofcode2023/utils"
+	"adventofcode2023/day01"
+)
+// Usage: go run main.go <NN>
+// assumes input is in day<NN>/input.txt
+func main() {
+	d := day()
+	fmt.Printf("Running day %02d\n", d)
+
+	switch d {
+	case 1:
+		fmt.Printf("part 1: %d\n", day01.Part1(utils.Readfile(d)))
+		fmt.Printf("part 2: %d\n", day01.Part2(utils.Readfile(d)))
+	default:
+		panic(fmt.Errorf("no such day: %d", d))
+	}
+}
+
+// Reads day from os.Args.
+func day() int {
+	latest := 0
+	if len(os.Args) == 1 {
+		return latest
+	}
+
+	if os.Args[1] == "next" {
+		genNext(latest + 1)
+		os.Exit(0)
+	}
+	day := utils.MustAtoi(os.Args[1])
+	return day
+}
+
+
+func genNext(n int) {
+	os.Mkdir(fmt.Sprintf("day%02d", n), 0755)
+	f, err := os.Create(fmt.Sprintf("day%02d/day%02d.go", n, n))
+	utils.PanicOnErr(err)
+	defer f.Close()
+	f.WriteString(fmt.Sprintf(`package day%02d
+
+func Part1(input string) int {
+	return 0
+}
+
+func Part2(input string) int {
+	return 0
+}
+`, n))
+	fmt.Printf("wrote day%02d/day%02d.go\n", n, n)
+
+	f, err = os.Create(fmt.Sprintf("day%02d/day%02d_test.go", n, n))
+	utils.PanicOnErr(err)
+	defer f.Close()
+	f.WriteString(fmt.Sprintf(`package day%02d
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestPart1(t *testing.T) {
+	r := Part1("")
+	require.Equal(t, 0, r)
+}
+
+func TestPart2(t *testing.T) {
+	r := Part2("")
+	require.Equal(t, 0, r)
+}
+`, n))
+	fmt.Printf("wrote day%02d/day%02d_test.go\n", n, n)
+
+}