mirror of https://github.com/poanetwork/gecko.git
53 lines
1.3 KiB
Go
53 lines
1.3 KiB
Go
// (c) 2019-2020, Ava Labs, Inc. All rights reserved.
|
|
// See the file LICENSE for licensing terms.
|
|
|
|
package json
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"net/http"
|
|
"strings"
|
|
"unicode"
|
|
"unicode/utf8"
|
|
|
|
"github.com/gorilla/rpc/v2"
|
|
"github.com/gorilla/rpc/v2/json2"
|
|
)
|
|
|
|
var (
|
|
errUppercaseMethod = errors.New("method must start with a non-uppercase letter")
|
|
)
|
|
|
|
// NewCodec returns a new json codec that will convert the first character of
|
|
// the method to uppercase
|
|
func NewCodec() rpc.Codec {
|
|
return lowercase{json2.NewCodec()}
|
|
}
|
|
|
|
type lowercase struct{ *json2.Codec }
|
|
|
|
func (lc lowercase) NewRequest(r *http.Request) rpc.CodecRequest {
|
|
return &request{lc.Codec.NewRequest(r).(*json2.CodecRequest)}
|
|
}
|
|
|
|
type request struct{ *json2.CodecRequest }
|
|
|
|
func (r *request) Method() (string, error) {
|
|
method, err := r.CodecRequest.Method()
|
|
methodSections := strings.SplitN(method, ".", 2)
|
|
if len(methodSections) != 2 || err != nil {
|
|
return method, err
|
|
}
|
|
class, function := methodSections[0], methodSections[1]
|
|
firstRune, runeLen := utf8.DecodeRuneInString(function)
|
|
if firstRune == utf8.RuneError {
|
|
return method, nil
|
|
}
|
|
if unicode.IsUpper(firstRune) {
|
|
return method, errUppercaseMethod
|
|
}
|
|
uppercaseRune := string(unicode.ToUpper(firstRune))
|
|
return fmt.Sprintf("%s.%s%s", class, string(uppercaseRune), function[runeLen:]), nil
|
|
}
|