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Avoid code duplication in openDescriptionFile.

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This commit is contained in:
Juliusz Chroboczek 2023-12-09 16:11:30 +01:00
parent 1f3b349ea2
commit dcde4562f5
1 changed files with 6 additions and 22 deletions
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28
group/group.go
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@ -1007,13 +1007,13 @@ func maxHistoryAge(desc *Description) time.Duration {
return DefaultMaxHistoryAge
}
func openDescriptionFile(name string) (*os.File, string, bool, error) {
func getDescriptionFile[T any](name string, get func(string) (T, error)) (T, string, bool, error) {
isParent := false
for name != "" {
fileName := filepath.Join(
Directory, path.Clean("/"+name)+".json",
)
r, err := os.Open(fileName)
r, err := get(fileName)
if !os.IsNotExist(err) {
return r, fileName, isParent, err
}
@ -1021,24 +1021,8 @@ func openDescriptionFile(name string) (*os.File, string, bool, error) {
name, _ = path.Split(name)
name = strings.TrimRight(name, "/")
}
return nil, "", false, os.ErrNotExist
}
func statDescriptionFile(name string) (os.FileInfo, string, bool, error) {
isParent := false
for name != "" {
fileName := filepath.Join(
Directory, path.Clean("/"+name)+".json",
)
fi, err := os.Stat(fileName)
if !os.IsNotExist(err) {
return fi, fileName, isParent, err
}
isParent = true
name, _ = path.Split(name)
name = strings.TrimRight(name, "/")
}
return nil, "", false, os.ErrNotExist
var zero T
return zero, "", false, os.ErrNotExist
}
// descriptionMatch returns true if the description hasn't changed between
@ -1057,7 +1041,7 @@ func descriptionMatch(d1, d2 *Description) bool {
// descriptionUnchanged returns true if a group's description hasn't
// changed since it was last read.
func descriptionUnchanged(name string, desc *Description) bool {
fi, fileName, _, err := statDescriptionFile(name)
fi, fileName, _, err := getDescriptionFile(name, os.Stat)
if err != nil || fileName != desc.FileName {
return false
}
@ -1082,7 +1066,7 @@ func GetDescription(name string) (*Description, error) {
// readDescription reads a group's description from disk
func readDescription(name string) (*Description, error) {
r, fileName, isParent, err := openDescriptionFile(name)
r, fileName, isParent, err := getDescriptionFile(name, os.Open)
if err != nil {
return nil, err
}