remove viper

WIP

vendor/github.com/OpenPeeDeeP/xdg/xdg.go

@@ -0,0 +1,163 @@
+// Copyright (c) 2017, OpenPeeDeeP. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package xdg impelements the XDG standard for application file locations.
+package xdg
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+var defaulter xdgDefaulter = new(osDefaulter)
+
+type xdgDefaulter interface {
+	defaultDataHome() string
+	defaultDataDirs() []string
+	defaultConfigHome() string
+	defaultConfigDirs() []string
+	defaultCacheHome() string
+}
+
+type osDefaulter struct {
+}
+
+//This method is used in the testing suit
+// nolint: deadcode
+func setDefaulter(def xdgDefaulter) {
+	defaulter = def
+}
+
+// XDG is information about the currently running application
+type XDG struct {
+	Vendor      string
+	Application string
+}
+
+// New returns an instance of XDG that is used to grab files for application use
+func New(vendor, application string) *XDG {
+	return &XDG{
+		Vendor:      vendor,
+		Application: application,
+	}
+}
+
+// DataHome returns the location that should be used for user specific data files for this specific application
+func (x *XDG) DataHome() string {
+	return filepath.Join(DataHome(), x.Vendor, x.Application)
+}
+
+// DataDirs returns a list of locations that should be used for system wide data files for this specific application
+func (x *XDG) DataDirs() []string {
+	dataDirs := DataDirs()
+	for i, dir := range dataDirs {
+		dataDirs[i] = filepath.Join(dir, x.Vendor, x.Application)
+	}
+	return dataDirs
+}
+
+// ConfigHome returns the location that should be used for user specific config files for this specific application
+func (x *XDG) ConfigHome() string {
+	return filepath.Join(ConfigHome(), x.Vendor, x.Application)
+}
+
+// ConfigDirs returns a list of locations that should be used for system wide config files for this specific application
+func (x *XDG) ConfigDirs() []string {
+	configDirs := ConfigDirs()
+	for i, dir := range configDirs {
+		configDirs[i] = filepath.Join(dir, x.Vendor, x.Application)
+	}
+	return configDirs
+}
+
+// CacheHome returns the location that should be used for application cache files for this specific application
+func (x *XDG) CacheHome() string {
+	return filepath.Join(CacheHome(), x.Vendor, x.Application)
+}
+
+// QueryData looks for the given filename in XDG paths for data files.
+// Returns an empty string if one was not found.
+func (x *XDG) QueryData(filename string) string {
+	dirs := x.DataDirs()
+	dirs = append([]string{x.DataHome()}, dirs...)
+	return returnExist(filename, dirs)
+}
+
+// QueryConfig looks for the given filename in XDG paths for config files.
+// Returns an empty string if one was not found.
+func (x *XDG) QueryConfig(filename string) string {
+	dirs := x.ConfigDirs()
+	dirs = append([]string{x.ConfigHome()}, dirs...)
+	return returnExist(filename, dirs)
+}
+
+// QueryCache looks for the given filename in XDG paths for cache files.
+// Returns an empty string if one was not found.
+func (x *XDG) QueryCache(filename string) string {
+	return returnExist(filename, []string{x.CacheHome()})
+}
+
+func returnExist(filename string, dirs []string) string {
+	for _, dir := range dirs {
+		_, err := os.Stat(filepath.Join(dir, filename))
+		if (err != nil && os.IsExist(err)) || err == nil {
+			return filepath.Join(dir, filename)
+		}
+	}
+	return ""
+}
+
+// DataHome returns the location that should be used for user specific data files
+func DataHome() string {
+	dataHome := os.Getenv("XDG_DATA_HOME")
+	if dataHome == "" {
+		dataHome = defaulter.defaultDataHome()
+	}
+	return dataHome
+}
+
+// DataDirs returns a list of locations that should be used for system wide data files
+func DataDirs() []string {
+	var dataDirs []string
+	dataDirsStr := os.Getenv("XDG_DATA_DIRS")
+	if dataDirsStr != "" {
+		dataDirs = strings.Split(dataDirsStr, string(os.PathListSeparator))
+	}
+	if len(dataDirs) == 0 {
+		dataDirs = defaulter.defaultDataDirs()
+	}
+	return dataDirs
+}
+
+// ConfigHome returns the location that should be used for user specific config files
+func ConfigHome() string {
+	configHome := os.Getenv("XDG_CONFIG_HOME")
+	if configHome == "" {
+		configHome = defaulter.defaultConfigHome()
+	}
+	return configHome
+}
+
+// ConfigDirs returns a list of locations that should be used for system wide config files
+func ConfigDirs() []string {
+	var configDirs []string
+	configDirsStr := os.Getenv("XDG_CONFIG_DIRS")
+	if configDirsStr != "" {
+		configDirs = strings.Split(configDirsStr, string(os.PathListSeparator))
+	}
+	if len(configDirs) == 0 {
+		configDirs = defaulter.defaultConfigDirs()
+	}
+	return configDirs
+}
+
+// CacheHome returns the location that should be used for application cache files
+func CacheHome() string {
+	cacheHome := os.Getenv("XDG_CACHE_HOME")
+	if cacheHome == "" {
+		cacheHome = defaulter.defaultCacheHome()
+	}
+	return cacheHome
+}