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69 lines
1.1 KiB
69 lines
1.1 KiB
12 months ago
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package main
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import (
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"flag"
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"fmt"
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"io"
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"log"
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"os"
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"path/filepath"
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"strconv"
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)
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type puzzle interface {
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solve(r io.Reader) string
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}
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var (
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// pick which day to run with a flag
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day = flag.String("d", "", "which day to solve")
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// slice of all puzzles
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puzzles = []puzzle{
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&day01{},
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}
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)
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func init() {
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flag.Parse()
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}
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func inputs(day int64) []io.Reader {
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inputs := make([]io.Reader, 0, 2)
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path := fmt.Sprintf("input/%d-[1-2]", day)
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matches, err := filepath.Glob(path)
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if err != nil {
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log.Fatalf("matching puzzle input files: %s", err.Error())
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}
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fmt.Println(matches)
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for _, match := range matches {
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f, err := os.Open(match)
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if err == nil {
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inputs = append(inputs, f)
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}
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}
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return inputs
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}
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func main() {
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puzzleIndex, err := strconv.ParseInt(*day, 10, 32)
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if err != nil {
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log.Fatalf("invalid puzzle day: %s", *day)
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}
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inputs := inputs(puzzleIndex)
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puzzle := puzzles[puzzleIndex-1]
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fmt.Fprintf(os.Stdout, "Day %d:\n", puzzleIndex)
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for i := range inputs {
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ans := puzzle.solve(inputs[i])
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fmt.Fprintf(os.Stdout, "Solution %d:\n%s", i+1, ans)
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}
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fmt.Fprintln(os.Stdout)
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}
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