kovidgoyal/kitty
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Make the various path finding functions thread safe and cache their results

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This commit is contained in:
Kovid Goyal 2023-01-25 16:24:27 +05:30
parent a01d68ed85
commit e3040a9c91
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GPG Key ID: 06BC317B515ACE7C
1 changed files with 26 additions and 17 deletions
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45
tools/utils/paths.go
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@ -9,6 +9,7 @@ import (
"path/filepath"
"runtime"
"strings"
"sync"
"golang.org/x/sys/unix"
)
@ -56,21 +57,26 @@ func Abspath(path string) string {
return path
}
var config_dir string
var config_dir, kitty_exe, cache_dir string
var kitty_exe_err error
var config_dir_once, kitty_exe_once, cache_dir_once sync.Once
func find_kitty_exe() {
exe, err := os.Executable()
if err == nil {
kitty_exe = filepath.Join(filepath.Dir(exe), "kitty")
kitty_exe_err = unix.Access(kitty_exe, unix.X_OK)
} else {
kitty_exe_err = err
}
}
func KittyExe() (string, error) {
exe, err := os.Executable()
if err != nil {
return "", err
}
ans := filepath.Join(filepath.Dir(exe), "kitty")
return ans, unix.Access(ans, unix.X_OK)
kitty_exe_once.Do(find_kitty_exe)
return kitty_exe, kitty_exe_err
}
func ConfigDir() string {
if config_dir != "" {
return config_dir
}
func find_config_dir() {
if os.Getenv("KITTY_CONFIG_DIRECTORY") != "" {
config_dir = Abspath(Expanduser(os.Getenv("KITTY_CONFIG_DIRECTORY")))
} else {
@ -98,16 +104,14 @@ func ConfigDir() string {
}
}
}
}
func ConfigDir() string {
config_dir_once.Do(find_config_dir)
return config_dir
}
var cache_dir string
func CacheDir() string {
if cache_dir != "" {
return cache_dir
}
func find_cache_dir() {
candidate := ""
if edir := os.Getenv("KITTY_CACHE_DIRECTORY"); edir != "" {
candidate = Abspath(Expanduser(edir))
@ -121,7 +125,12 @@ func CacheDir() string {
candidate = filepath.Join(Expanduser(candidate), "kitty")
}
os.MkdirAll(candidate, 0o755)
return candidate
cache_dir = candidate
}
func CacheDir() string {
cache_dir_once.Do(find_cache_dir)
return cache_dir
}
type Walk_callback func(path, abspath string, d fs.DirEntry, err error) error