gime-bolt/vendor/github.com/casimir/xdg-go/xdg.go

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2018-02-15 13:45:53 +00:00
package xdg
import (
"os"
"path/filepath"
"strings"
)
// App is an aggregation of XDG information for a named application. Useful to
// propagate app configuration.
type App struct {
Name string
}
func (a App) path(envVar string, defaultFn func() string, file string) string {
base := os.Getenv(envVar)
if base == "" {
base = defaultFn()
}
return filepath.Join(base, a.Name, file)
}
// DataPath determines the full path of a data file.
func (a App) DataPath(file string) string {
return a.path("XDG_DATA_HOME", DataHome, file)
}
// ConfigPath determines the full path of a data file.
func (a App) ConfigPath(file string) string {
return a.path("XDG_CONFIG_HOME", ConfigHome, file)
}
// CachePath determines the full path of a cached file.
func (a App) CachePath(file string) string {
return a.path("XDG_CACHE_HOME", CacheHome, file)
}
func (a App) multiPaths(envVar string, defaultFn func() []string, file string) []string {
var bases []string
env := os.Getenv(envVar)
if env != "" {
bases = strings.Split(env, ":")
} else {
bases = defaultFn()
}
var dirs []string
for _, it := range bases {
dirs = append(dirs, filepath.Join(it, a.Name, file))
}
return dirs
}
// SystemDataPaths determines system-wide possible paths for a data file.
func (a App) SystemDataPaths(file string) []string {
return a.multiPaths("XDG_DATA_DIRS", DataDirs, file)
}
// SystemConfigPaths determines system-wide possible paths for a config file.
func (a App) SystemConfigPaths(file string) []string {
return a.multiPaths("XDG_CONFIG_DIRS", ConfigDirs, file)
}
var defaultApp App
// SetName for the default application. Used for package-wide functions.
func SetName(name string) {
defaultApp.Name = name
}
// DataPath determines the full path of a data file.
func DataPath(file string) string {
return defaultApp.DataPath(file)
}
// ConfigPath determines the full path of a data file.
func ConfigPath(file string) string {
return defaultApp.ConfigPath(file)
}
// CachePath determines the full path of a cached file.
func CachePath(file string) string {
return defaultApp.CachePath(file)
}
// SystemDataPaths determines system-wide possible paths for a data file.
func SystemDataPaths(file string) []string {
return defaultApp.SystemDataPaths(file)
}
// SystemConfigPaths determines system-wide possible paths for a config file.
func SystemConfigPaths(file string) []string {
return defaultApp.SystemConfigPaths(file)
}