75 lines
1.5 KiB
Go
75 lines
1.5 KiB
Go
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package main
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import (
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"errors"
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"flag"
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"fmt"
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"io/fs"
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"os"
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"path/filepath"
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"time"
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"github.com/peterbourgon/ff/v3"
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)
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var (
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resultmap = map[string]string{
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"y": "✔",
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"n": "✘",
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"a": "◒",
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"u": "‽",
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"i": "ⓘ",
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"w": "⚠",
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}
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supernums = "⁰¹²³⁴⁵⁶⁷⁸⁹"
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refresh = time.Hour * 24 * 30
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)
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func main() {
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fs := flag.NewFlagSet("caniuse", flag.ContinueOnError)
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if err := ff.Parse(fs, os.Args[1:],
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ff.WithEnvVarPrefix("CANIUSE"),
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); err != nil {
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panic(err)
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}
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if fs.NArg() != 1 {
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fmt.Println("caniuse requires one argument")
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return
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}
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data, err := loadData()
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if err != nil {
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fmt.Printf("could not load data: %v", err)
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}
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fmt.Println(data)
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}
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func loadData() (Data, error) {
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var data Data
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cache, err := os.UserCacheDir()
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if err != nil {
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return data, fmt.Errorf("could not determine cache dir: %v", err)
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}
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caniuseCache := filepath.Join(cache, "caniuse")
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if err := os.MkdirAll(caniuseCache, os.ModePerm); err != nil {
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return data, fmt.Errorf("could not create dir %q: %v", caniuseCache, err)
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}
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dataPath := filepath.Join(caniuseCache, "data.json")
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fi, err := os.Stat(dataPath)
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if err != nil && !errors.Is(err, fs.ErrNotExist) {
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return data, fmt.Errorf("could not stat %q: %v", dataPath, err)
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} else if errors.Is(err, fs.ErrNotExist) || time.Since(fi.ModTime()) > refresh {
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if err := Download(dataPath); err != nil {
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return data, fmt.Errorf("could not download data: %v", err)
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}
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}
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return Load(dataPath)
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}
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