blob: 47a99e5af3f1b700db374eca24b48d9d8fc21647 [file] [log] [blame]
Scott Baker2c1c4822019-10-16 11:02:41 -07001package mapstructure
2
3import (
4 "errors"
5 "fmt"
6 "sort"
7 "strings"
8)
9
10// Error implements the error interface and can represents multiple
11// errors that occur in the course of a single decode.
12type Error struct {
13 Errors []string
14}
15
16func (e *Error) Error() string {
17 points := make([]string, len(e.Errors))
18 for i, err := range e.Errors {
19 points[i] = fmt.Sprintf("* %s", err)
20 }
21
22 sort.Strings(points)
23 return fmt.Sprintf(
24 "%d error(s) decoding:\n\n%s",
25 len(e.Errors), strings.Join(points, "\n"))
26}
27
28// WrappedErrors implements the errwrap.Wrapper interface to make this
29// return value more useful with the errwrap and go-multierror libraries.
30func (e *Error) WrappedErrors() []error {
31 if e == nil {
32 return nil
33 }
34
35 result := make([]error, len(e.Errors))
36 for i, e := range e.Errors {
37 result[i] = errors.New(e)
38 }
39
40 return result
41}
42
43func appendErrors(errors []string, err error) []string {
44 switch e := err.(type) {
45 case *Error:
46 return append(errors, e.Errors...)
47 default:
48 return append(errors, e.Error())
49 }
50}