niki/vendor/github.com/mitchellh/mapstructure/error.go

package mapstructure

import (
	"errors"
	"fmt"
	"sort"
	"strings"
)

// Error implements the error interface and can represents multiple

// errors that occur in the course of a single decode.

type Error struct {
	Errors []string
}

func (e *Error) Error() string {

	points := make([]string, len(e.Errors))

	for i, err := range e.Errors {

		points[i] = fmt.Sprintf("* %s", err)

	}

	sort.Strings(points)

	return fmt.Sprintf(

		"%d error(s) decoding:\n\n%s",

		len(e.Errors), strings.Join(points, "\n"))

}

// WrappedErrors implements the errwrap.Wrapper interface to make this

// return value more useful with the errwrap and go-multierror libraries.

func (e *Error) WrappedErrors() []error {

	if e == nil {

		return nil

	}

	result := make([]error, len(e.Errors))

	for i, e := range e.Errors {

		result[i] = errors.New(e)

	}

	return result

}

func appendErrors(errors []string, err error) []string {

	switch e := err.(type) {

	case *Error:

		return append(errors, e.Errors...)

	default:

		return append(errors, e.Error())

	}

}