-
Notifications
You must be signed in to change notification settings - Fork 1.7k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
StringMap wraps a `map[string]string` and parses inputs in the form of "key=value".
- Loading branch information
Showing
7 changed files
with
352 additions
and
3 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,116 @@ | ||
| package cli | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "fmt" | ||
| "reflect" | ||
| "sort" | ||
| "strings" | ||
| ) | ||
|
|
||
| // MapBase wraps map[string]T to satisfy flag.Value | ||
| type MapBase[T any, C any, VC ValueCreator[T, C]] struct { | ||
| dict *map[string]T | ||
| hasBeenSet bool | ||
| value Value | ||
| } | ||
|
|
||
| func (i MapBase[T, C, VC]) Create(val map[string]T, p *map[string]T, c C) Value { | ||
| *p = map[string]T{} | ||
| for k, v := range val { | ||
| (*p)[k] = v | ||
| } | ||
| var t T | ||
| np := new(T) | ||
| var vc VC | ||
| return &MapBase[T, C, VC]{ | ||
| dict: p, | ||
| value: vc.Create(t, np, c), | ||
| } | ||
| } | ||
|
|
||
| // NewMapBase makes a *MapBase with default values | ||
| func NewMapBase[T any, C any, VC ValueCreator[T, C]](defaults map[string]T) *MapBase[T, C, VC] { | ||
| return &MapBase[T, C, VC]{ | ||
| dict: &defaults, | ||
| } | ||
| } | ||
|
|
||
| // Set parses the value and appends it to the list of values | ||
| func (i *MapBase[T, C, VC]) Set(value string) error { | ||
| if !i.hasBeenSet { | ||
| *i.dict = map[string]T{} | ||
| i.hasBeenSet = true | ||
| } | ||
|
|
||
| if strings.HasPrefix(value, slPfx) { | ||
| // Deserializing assumes overwrite | ||
| _ = json.Unmarshal([]byte(strings.Replace(value, slPfx, "", 1)), &i.dict) | ||
| i.hasBeenSet = true | ||
| return nil | ||
| } | ||
|
|
||
| for _, item := range flagSplitMultiValues(value) { | ||
| key, value, ok := strings.Cut(item, defaultMapFlagKeyValueSeparator) | ||
| if !ok { | ||
| return fmt.Errorf("item %q is missing separator %q", item, defaultMapFlagKeyValueSeparator) | ||
| } | ||
| if err := i.value.Set(strings.TrimSpace(value)); err != nil { | ||
| return err | ||
| } | ||
| tmp, ok := i.value.Get().(T) | ||
| if !ok { | ||
| return fmt.Errorf("unable to cast %v", i.value) | ||
| } | ||
| (*i.dict)[key] = tmp | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| // String returns a readable representation of this value (for usage defaults) | ||
| func (i *MapBase[T, C, VC]) String() string { | ||
| v := i.Value() | ||
| var t T | ||
| if reflect.TypeOf(t).Kind() == reflect.String { | ||
| return fmt.Sprintf("%v", v) | ||
| } | ||
| return fmt.Sprintf("%T{%s}", v, i.ToString(v)) | ||
| } | ||
|
|
||
| // Serialize allows MapBase to fulfill Serializer | ||
| func (i *MapBase[T, C, VC]) Serialize() string { | ||
| jsonBytes, _ := json.Marshal(i.dict) | ||
| return fmt.Sprintf("%s%s", slPfx, string(jsonBytes)) | ||
| } | ||
|
|
||
| // Value returns the mapping of values set by this flag | ||
| func (i *MapBase[T, C, VC]) Value() map[string]T { | ||
| if i.dict == nil { | ||
| return map[string]T{} | ||
| } | ||
| return *i.dict | ||
| } | ||
|
|
||
| // Get returns the mapping of values set by this flag | ||
| func (i *MapBase[T, C, VC]) Get() interface{} { | ||
| return *i.dict | ||
| } | ||
|
|
||
| func (i MapBase[T, C, VC]) ToString(t map[string]T) string { | ||
| var defaultVals []string | ||
| var vc VC | ||
| for _, k := range sortedKeys(t) { | ||
| defaultVals = append(defaultVals, k+defaultMapFlagKeyValueSeparator+vc.ToString(t[k])) | ||
| } | ||
| return strings.Join(defaultVals, ", ") | ||
| } | ||
|
|
||
| func sortedKeys[T any](dict map[string]T) []string { | ||
| keys := make([]string, 0, len(dict)) | ||
| for k := range dict { | ||
| keys = append(keys, k) | ||
| } | ||
| sort.Strings(keys) | ||
| return keys | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,27 @@ | ||
| package cli | ||
|
|
||
| import "flag" | ||
|
|
||
| type StringMap = MapBase[string, NoConfig, stringValue] | ||
| type StringMapFlag = FlagBase[map[string]string, NoConfig, StringMap] | ||
|
|
||
| var NewStringMap = NewMapBase[string, NoConfig, stringValue] | ||
|
|
||
| // StringMap looks up the value of a local StringMapFlag, returns | ||
| // nil if not found | ||
| func (cCtx *Context) StringMap(name string) map[string]string { | ||
| if fs := cCtx.lookupFlagSet(name); fs != nil { | ||
| return lookupStringMap(name, fs) | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func lookupStringMap(name string, set *flag.FlagSet) map[string]string { | ||
| f := set.Lookup(name) | ||
| if f != nil { | ||
| if mapping, ok := f.Value.(*StringMap); ok { | ||
| return mapping.Value() | ||
| } | ||
| } | ||
| return nil | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.