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marshal.go
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/
marshal.go
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package http
import (
"bytes"
"encoding/json"
"fmt"
"net/http"
"reflect"
)
func MarshalJSON(w http.ResponseWriter, i interface{}) {
MarshalJSONWithStatus(w, i, http.StatusOK)
}
func MarshalJSONWithStatus(w http.ResponseWriter, i interface{}, status int) {
w.Header().Set("content-type", "application/json")
w.WriteHeader(status)
if i == nil || (reflect.ValueOf(i).Kind() == reflect.Ptr && reflect.ValueOf(i).IsNil()) {
return
}
err := json.NewEncoder(w).Encode(i)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
}
}
func ConcatenateJSON(first, second []byte) ([]byte, error) {
if !bytes.HasSuffix(first, []byte{'}'}) {
return nil, fmt.Errorf("jws: invalid JSON %s", first)
}
if !bytes.HasPrefix(second, []byte{'{'}) {
return nil, fmt.Errorf("jws: invalid JSON %s", second)
}
// check empty
if len(first) == 2 {
return second, nil
}
if len(second) == 2 {
return first, nil
}
first[len(first)-1] = ','
first = append(first, second[1:]...)
return first, nil
}