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file.go
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file.go
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package util
import (
"bytes"
"encoding/gob"
"encoding/json"
"io"
"log"
"os"
"path/filepath"
)
func ToGob[T any](val *T, dest string) {
var b bytes.Buffer
encoder := gob.NewEncoder(&b)
if err := encoder.Encode(val); err != nil {
log.Panicln(err)
}
writeFile(b.Bytes(), dest)
}
func FromGob[T any](src string, dest *T) bool {
if _, err := os.Stat(src); err != nil {
return false
}
file, err := os.Open(src)
if err != nil {
log.Panicln(err)
}
b, err := io.ReadAll(file)
if err != nil {
log.Panic(err)
}
decoder := gob.NewDecoder(bytes.NewReader(b))
err = decoder.Decode(dest)
if err != nil {
log.Panicln(err)
}
return true
}
func ToJson[T any](src *T, dest string) {
b, err := json.Marshal(src)
if err != nil {
log.Panicln(err)
}
writeFile(b, dest)
}
func FromJson[T any](src string, dest *T) bool {
if _, err := os.Stat(src); err != nil {
return false
}
file, err := os.Open(src)
if err != nil {
log.Panicln(err)
}
b, err := io.ReadAll(file)
if err != nil {
log.Panicln(err)
}
err = json.Unmarshal(b, dest)
if err != nil {
log.Panicln(err)
}
return true
}
func TmpDir() string {
return filepath.Join(os.TempDir())
}
func ConfigDir() string {
dir, err := os.UserConfigDir()
if err != nil {
log.Panicln(err)
}
return filepath.Join(dir, "walker")
}
func CacheDir() string {
dir, err := os.UserCacheDir()
if err != nil {
log.Panicln(err)
}
return filepath.Join(dir, "walker")
}
func writeFile(b []byte, dest string) {
err := os.MkdirAll(filepath.Dir(dest), 0755)
if err != nil {
log.Println(err)
return
}
err = os.WriteFile(dest, b, 0o600)
if err != nil {
log.Panicln(err)
}
}