mirror of https://github.com/perkeep/perkeep.git
150 lines
3.7 KiB
Go
150 lines
3.7 KiB
Go
/*
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Copyright 2011 Google Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package osutil
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import (
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"os"
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"path/filepath"
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"runtime"
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"strings"
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"sync"
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)
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func HomeDir() string {
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if runtime.GOOS == "windows" {
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return os.Getenv("HOMEPATH")
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}
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return os.Getenv("HOME")
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}
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var cacheDirOnce sync.Once
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func CacheDir() string {
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cacheDirOnce.Do(makeCacheDir)
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return cacheDir()
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}
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func cacheDir() string {
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if d := os.Getenv("CAMLI_CACHE_DIR"); d != "" {
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return d
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}
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switch runtime.GOOS {
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case "darwin":
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return filepath.Join(HomeDir(), "Library", "Caches", "Camlistore")
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case "windows":
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panic("CacheDir not implemented on OS == " + runtime.GOOS)
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}
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return filepath.Join(HomeDir(), ".cache", "camlistore")
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}
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func makeCacheDir() {
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os.Mkdir(cacheDir(), 0700)
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}
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func CamliVarDir() string {
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switch runtime.GOOS {
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case "windows":
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return filepath.Join(os.Getenv("APPDATA"), "Camlistore")
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case "darwin":
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return filepath.Join(HomeDir(), "Library", "Camlistore")
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}
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return filepath.Join(HomeDir(), "var", "camlistore")
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}
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func CamliBlobRoot() string {
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return filepath.Join(CamliVarDir(), "blobs")
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}
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func CamliConfigDir() string {
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if p := os.Getenv("CAMLI_CONFIG_DIR"); p != "" {
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return p
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}
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if runtime.GOOS == "windows" {
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return filepath.Join(os.Getenv("APPDATA"), "Camlistore")
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}
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return filepath.Join(HomeDir(), ".camlistore")
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}
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func UserServerConfigPath() string {
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return filepath.Join(CamliConfigDir(), "server-config.json")
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}
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func IdentitySecretRing() string {
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return filepath.Join(CamliConfigDir(), "identity-secring.gpg")
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}
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// Find the correct absolute path corresponding to a relative path,
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// searching the following sequence of directories:
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// 1. Working Directory
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// 2. CAMLI_CONFIG_DIR (deprecated, will complain if this is on env)
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// 3. (windows only) APPDATA/camli
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// 4. All directories in CAMLI_INCLUDE_PATH (standard PATH form for OS)
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func FindCamliInclude(configFile string) (absPath string, err error) {
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// Try to open as absolute / relative to CWD
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_, err = os.Stat(configFile)
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if err == nil {
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return configFile, nil
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}
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if filepath.IsAbs(configFile) {
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// End of the line for absolute path
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return "", err
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}
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// Try the config dir
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configDir := CamliConfigDir()
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if _, err = os.Stat(filepath.Join(configDir, configFile)); err == nil {
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return filepath.Join(configDir, configFile), nil
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}
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// Finally, search CAMLI_INCLUDE_PATH
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p := os.Getenv("CAMLI_INCLUDE_PATH")
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for _, d := range strings.Split(p, string(filepath.ListSeparator)) {
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if _, err = os.Stat(filepath.Join(d, configFile)); err == nil {
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return filepath.Join(d, configFile), nil
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}
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}
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return "", os.ErrNotExist
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}
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// GoPackagePath returns the path to the provided Go package's
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// source directory.
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// pkg may be a path prefix without any *.go files.
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// The error is os.ErrNotExist if GOPATH is unset or the directory
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// doesn't exist in any GOPATH component.
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func GoPackagePath(pkg string) (path string, err error) {
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gp := os.Getenv("GOPATH")
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if gp == "" {
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return path, os.ErrNotExist
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}
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for _, p := range filepath.SplitList(gp) {
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dir := filepath.Join(p, "src", filepath.FromSlash(pkg))
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fi, err := os.Stat(dir)
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if os.IsNotExist(err) {
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continue
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}
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if err != nil {
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return "", err
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}
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if !fi.IsDir() {
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continue
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}
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return dir, nil
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}
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return path, os.ErrNotExist
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}
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