diff options
Diffstat (limited to 'vendor/github.com/go-openapi/swag/json.go')
-rw-r--r-- | vendor/github.com/go-openapi/swag/json.go | 270 |
1 files changed, 0 insertions, 270 deletions
diff --git a/vendor/github.com/go-openapi/swag/json.go b/vendor/github.com/go-openapi/swag/json.go deleted file mode 100644 index 6e9ec20fc..000000000 --- a/vendor/github.com/go-openapi/swag/json.go +++ /dev/null @@ -1,270 +0,0 @@ -// Copyright 2015 go-swagger maintainers -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package swag - -import ( - "bytes" - "encoding/json" - "reflect" - "strings" - "sync" - - "github.com/mailru/easyjson/jlexer" - "github.com/mailru/easyjson/jwriter" -) - -// DefaultJSONNameProvider the default cache for types -var DefaultJSONNameProvider = NewNameProvider() - -const comma = byte(',') - -var closers = map[byte]byte{ - '{': '}', - '[': ']', -} - -type ejMarshaler interface { - MarshalEasyJSON(w *jwriter.Writer) -} - -type ejUnmarshaler interface { - UnmarshalEasyJSON(w *jlexer.Lexer) -} - -// WriteJSON writes json data, prefers finding an appropriate interface to short-circuit the marshaller -// so it takes the fastest option available. -func WriteJSON(data interface{}) ([]byte, error) { - if d, ok := data.(ejMarshaler); ok { - jw := new(jwriter.Writer) - d.MarshalEasyJSON(jw) - return jw.BuildBytes() - } - if d, ok := data.(json.Marshaler); ok { - return d.MarshalJSON() - } - return json.Marshal(data) -} - -// ReadJSON reads json data, prefers finding an appropriate interface to short-circuit the unmarshaller -// so it takes the fastes option available -func ReadJSON(data []byte, value interface{}) error { - if d, ok := value.(ejUnmarshaler); ok { - jl := &jlexer.Lexer{Data: data} - d.UnmarshalEasyJSON(jl) - return jl.Error() - } - if d, ok := value.(json.Unmarshaler); ok { - return d.UnmarshalJSON(data) - } - return json.Unmarshal(data, value) -} - -// DynamicJSONToStruct converts an untyped json structure into a struct -func DynamicJSONToStruct(data interface{}, target interface{}) error { - // TODO: convert straight to a json typed map (mergo + iterate?) - b, err := WriteJSON(data) - if err != nil { - return err - } - if err := ReadJSON(b, target); err != nil { - return err - } - return nil -} - -// ConcatJSON concatenates multiple json objects efficiently -func ConcatJSON(blobs ...[]byte) []byte { - if len(blobs) == 0 { - return nil - } - if len(blobs) == 1 { - return blobs[0] - } - - last := len(blobs) - 1 - var opening, closing byte - a := 0 - idx := 0 - buf := bytes.NewBuffer(nil) - - for i, b := range blobs { - if len(b) > 0 && opening == 0 { // is this an array or an object? - opening, closing = b[0], closers[b[0]] - } - - if opening != '{' && opening != '[' { - continue // don't know how to concatenate non container objects - } - - if len(b) < 3 { // yep empty but also the last one, so closing this thing - if i == last && a > 0 { - buf.WriteByte(closing) - } - continue - } - - idx = 0 - if a > 0 { // we need to join with a comma for everything beyond the first non-empty item - buf.WriteByte(comma) - idx = 1 // this is not the first or the last so we want to drop the leading bracket - } - - if i != last { // not the last one, strip brackets - buf.Write(b[idx : len(b)-1]) - } else { // last one, strip only the leading bracket - buf.Write(b[idx:]) - } - a++ - } - // somehow it ended up being empty, so provide a default value - if buf.Len() == 0 { - buf.WriteByte(opening) - buf.WriteByte(closing) - } - return buf.Bytes() -} - -// ToDynamicJSON turns an object into a properly JSON typed structure -func ToDynamicJSON(data interface{}) interface{} { - // TODO: convert straight to a json typed map (mergo + iterate?) - b, _ := json.Marshal(data) - var res interface{} - json.Unmarshal(b, &res) - return res -} - -// FromDynamicJSON turns an object into a properly JSON typed structure -func FromDynamicJSON(data, target interface{}) error { - b, _ := json.Marshal(data) - return json.Unmarshal(b, target) -} - -// NameProvider represents an object capabale of translating from go property names -// to json property names -// This type is thread-safe. -type NameProvider struct { - lock *sync.Mutex - index map[reflect.Type]nameIndex -} - -type nameIndex struct { - jsonNames map[string]string - goNames map[string]string -} - -// NewNameProvider creates a new name provider -func NewNameProvider() *NameProvider { - return &NameProvider{ - lock: &sync.Mutex{}, - index: make(map[reflect.Type]nameIndex), - } -} - -func buildnameIndex(tpe reflect.Type, idx, reverseIdx map[string]string) { - for i := 0; i < tpe.NumField(); i++ { - targetDes := tpe.Field(i) - - if targetDes.PkgPath != "" { // unexported - continue - } - - if targetDes.Anonymous { // walk embedded structures tree down first - buildnameIndex(targetDes.Type, idx, reverseIdx) - continue - } - - if tag := targetDes.Tag.Get("json"); tag != "" { - - parts := strings.Split(tag, ",") - if len(parts) == 0 { - continue - } - - nm := parts[0] - if nm == "-" { - continue - } - if nm == "" { // empty string means we want to use the Go name - nm = targetDes.Name - } - - idx[nm] = targetDes.Name - reverseIdx[targetDes.Name] = nm - } - } -} - -func newNameIndex(tpe reflect.Type) nameIndex { - var idx = make(map[string]string, tpe.NumField()) - var reverseIdx = make(map[string]string, tpe.NumField()) - - buildnameIndex(tpe, idx, reverseIdx) - return nameIndex{jsonNames: idx, goNames: reverseIdx} -} - -// GetJSONNames gets all the json property names for a type -func (n *NameProvider) GetJSONNames(subject interface{}) []string { - tpe := reflect.Indirect(reflect.ValueOf(subject)).Type() - names, ok := n.index[tpe] - if !ok { - names = n.makeNameIndex(tpe) - } - - var res []string - for k := range names.jsonNames { - res = append(res, k) - } - return res -} - -// GetJSONName gets the json name for a go property name -func (n *NameProvider) GetJSONName(subject interface{}, name string) (string, bool) { - tpe := reflect.Indirect(reflect.ValueOf(subject)).Type() - return n.GetJSONNameForType(tpe, name) -} - -// GetJSONNameForType gets the json name for a go property name on a given type -func (n *NameProvider) GetJSONNameForType(tpe reflect.Type, name string) (string, bool) { - names, ok := n.index[tpe] - if !ok { - names = n.makeNameIndex(tpe) - } - nme, ok := names.goNames[name] - return nme, ok -} - -func (n *NameProvider) makeNameIndex(tpe reflect.Type) nameIndex { - n.lock.Lock() - defer n.lock.Unlock() - names := newNameIndex(tpe) - n.index[tpe] = names - return names -} - -// GetGoName gets the go name for a json property name -func (n *NameProvider) GetGoName(subject interface{}, name string) (string, bool) { - tpe := reflect.Indirect(reflect.ValueOf(subject)).Type() - return n.GetGoNameForType(tpe, name) -} - -// GetGoNameForType gets the go name for a given type for a json property name -func (n *NameProvider) GetGoNameForType(tpe reflect.Type, name string) (string, bool) { - names, ok := n.index[tpe] - if !ok { - names = n.makeNameIndex(tpe) - } - nme, ok := names.jsonNames[name] - return nme, ok -} |