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Add option to output unescaped HTML in JSON strings #33

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Add option to output unescaped HTML in JSON strings #33

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19 changes: 15 additions & 4 deletions responder.go
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Original file line number Diff line number Diff line change
Expand Up @@ -88,12 +88,23 @@ func HTML(w http.ResponseWriter, r *http.Request, v string) {
w.Write([]byte(v))
}

// JSON marshals 'v' to JSON, automatically escaping HTML and setting the
// Content-Type as application/json.
func JSON(w http.ResponseWriter, r *http.Request, v interface{}) {
// JSONEncoderOpt is a function that can set options on the JSON encoder.
type JSONEncoderOpt func(*json.Encoder)

// UnescapedHTML disables escaping of &, < and > in JSON strings.
func UnescapedHTML(enc *json.Encoder) {
enc.SetEscapeHTML(false)
}

// JSON marshals 'v' to JSON, automatically escaping HTML by default,
// and setting the Content-Type as application/json.
func JSON(w http.ResponseWriter, r *http.Request, v interface{}, opts ...JSONEncoderOpt) {
buf := &bytes.Buffer{}
enc := json.NewEncoder(buf)
enc.SetEscapeHTML(true)
for _, opt := range opts {
opt(enc)
}

if err := enc.Encode(v); err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
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