fix: case when no XDG_{CACHE,CONFIG}_HOME

fixes #118

cliphist.go

@@ -41,19 +41,27 @@ func main() {
  })
  }
 
+ cacheHome, err := os.UserCacheDir()
+ if err != nil {
+ fmt.Fprintln(os.Stderr, err)
+ os.Exit(1)
+ }
+ configHome, err := os.UserConfigDir()
+ if err != nil {
+ fmt.Fprintln(os.Stderr, err)
+ os.Exit(1)
+ }
+
  maxItems := flag.Uint64("max-items", 750, "maximum number of items to store")
  maxDedupeSearch := flag.Uint64("max-dedupe-search", 100, "maximum number of last items to look through when finding duplicates")
  previewWidth := flag.Uint("preview-width", 100, "maximum number of characters to preview")
- dbPath := flag.String("db-path", "$XDG_CACHE_HOME/cliphist/db", "path to db")
- configPath := flag.String("config-path", "$XDG_CONFIG_HOME/cliphist/config", "overwrite config path to use instead of cli flags")
+ dbPath := flag.String("db-path", filepath.Join(cacheHome, "cliphist", "db"), "path to db")
+ configPath := flag.String("config-path", filepath.Join(configHome, "cliphist", "config"), "overwrite config path to use instead of cli flags")
 
  flag.Parse()
  flagconf.ParseEnv()
  flagconf.ParseConfig(*configPath)
 
- *dbPath = os.ExpandEnv(*dbPath)
-
- var err error
  switch flag.Arg(0) {
  case "store":
  switch os.Getenv("CLIPBOARD_STATE") { // from man wl-clipboard