diff options
Diffstat (limited to 'Godeps/_workspace/src/github.com/huandu/facebook/params.go')
| -rw-r--r-- | Godeps/_workspace/src/github.com/huandu/facebook/params.go | 227 |
1 files changed, 0 insertions, 227 deletions
diff --git a/Godeps/_workspace/src/github.com/huandu/facebook/params.go b/Godeps/_workspace/src/github.com/huandu/facebook/params.go deleted file mode 100644 index bcce18a3a..000000000 --- a/Godeps/_workspace/src/github.com/huandu/facebook/params.go +++ /dev/null @@ -1,227 +0,0 @@ -// A facebook graph api client in go. -// https://github.com/huandu/facebook/ -// -// Copyright 2012 - 2015, Huan Du -// Licensed under the MIT license -// https://github.com/huandu/facebook/blob/master/LICENSE - -package facebook - -import ( - "encoding/json" - "io" - "mime/multipart" - "net/url" - "os" - "reflect" - "runtime" -) - -// Makes a new Params instance by given data. -// Data must be a struct or a map with string keys. -// MakeParams will change all struct field name to lower case name with underscore. -// e.g. "FooBar" will be changed to "foo_bar". -// -// Returns nil if data cannot be used to make a Params instance. -func MakeParams(data interface{}) (params Params) { - if p, ok := data.(Params); ok { - return p - } - - defer func() { - if r := recover(); r != nil { - if _, ok := r.(runtime.Error); ok { - panic(r) - } - - params = nil - } - }() - - params = makeParams(reflect.ValueOf(data)) - return -} - -func makeParams(value reflect.Value) (params Params) { - for value.Kind() == reflect.Ptr || value.Kind() == reflect.Interface { - value = value.Elem() - } - - // only map with string keys can be converted to Params - if value.Kind() == reflect.Map && value.Type().Key().Kind() == reflect.String { - params = Params{} - - for _, key := range value.MapKeys() { - params[key.String()] = value.MapIndex(key).Interface() - } - - return - } - - if value.Kind() != reflect.Struct { - return - } - - params = Params{} - num := value.NumField() - - for i := 0; i < num; i++ { - name := camelCaseToUnderScore(value.Type().Field(i).Name) - field := value.Field(i) - - for field.Kind() == reflect.Ptr { - field = field.Elem() - } - - switch field.Kind() { - case reflect.Chan, reflect.Func, reflect.UnsafePointer, reflect.Invalid: - // these types won't be marshalled in json. - params = nil - return - - default: - params[name] = field.Interface() - } - } - - return -} - -// Encodes params to query string. -// If map value is not a string, Encode uses json.Marshal() to convert value to string. -// -// Encode will panic if Params contains values that cannot be marshalled to json string. -func (params Params) Encode(writer io.Writer) (mime string, err error) { - if params == nil || len(params) == 0 { - mime = _MIME_FORM_URLENCODED - return - } - - // check whether params contains any binary data. - hasBinary := false - - for _, v := range params { - typ := reflect.TypeOf(v) - - if typ == typeOfPointerToBinaryData || typ == typeOfPointerToBinaryFile { - hasBinary = true - break - } - } - - if hasBinary { - return params.encodeMultipartForm(writer) - } - - return params.encodeFormUrlEncoded(writer) -} - -func (params Params) encodeFormUrlEncoded(writer io.Writer) (mime string, err error) { - var jsonStr []byte - written := false - - for k, v := range params { - if written { - io.WriteString(writer, "&") - } - - io.WriteString(writer, url.QueryEscape(k)) - io.WriteString(writer, "=") - - if reflect.TypeOf(v).Kind() == reflect.String { - io.WriteString(writer, url.QueryEscape(reflect.ValueOf(v).String())) - } else { - jsonStr, err = json.Marshal(v) - - if err != nil { - return - } - - io.WriteString(writer, url.QueryEscape(string(jsonStr))) - } - - written = true - } - - mime = _MIME_FORM_URLENCODED - return -} - -func (params Params) encodeMultipartForm(writer io.Writer) (mime string, err error) { - w := multipart.NewWriter(writer) - defer func() { - w.Close() - mime = w.FormDataContentType() - }() - - for k, v := range params { - switch value := v.(type) { - case *binaryData: - var dst io.Writer - dst, err = w.CreateFormFile(k, value.Filename) - - if err != nil { - return - } - - _, err = io.Copy(dst, value.Source) - - if err != nil { - return - } - - case *binaryFile: - var dst io.Writer - var file *os.File - var path string - - dst, err = w.CreateFormFile(k, value.Filename) - - if err != nil { - return - } - - if value.Path == "" { - path = value.Filename - } else { - path = value.Path - } - - file, err = os.Open(path) - - if err != nil { - return - } - - _, err = io.Copy(dst, file) - - if err != nil { - return - } - - default: - var dst io.Writer - var jsonStr []byte - - dst, err = w.CreateFormField(k) - - if reflect.TypeOf(v).Kind() == reflect.String { - io.WriteString(dst, reflect.ValueOf(v).String()) - } else { - jsonStr, err = json.Marshal(v) - - if err != nil { - return - } - - _, err = dst.Write(jsonStr) - - if err != nil { - return - } - } - } - } - - return -} |