vendor: delete

1 files changed, 0 insertions, 1498 deletions

diff --git a/vendor/github.com/spf13/cast/caste.go b/vendor/github.com/spf13/cast/caste.go
deleted file mode 100644
index d49bbf83e..000000000
--- a/vendor/github.com/spf13/cast/caste.go
+++ /dev/null
@@ -1,1498 +0,0 @@
-// Copyright © 2014 Steve Francia <spf@spf13.com>.
-//
-// Use of this source code is governed by an MIT-style
-// license that can be found in the LICENSE file.
-
-package cast
-
-import (
-	"encoding/json"
-	"errors"
-	"fmt"
-	"html/template"
-	"reflect"
-	"strconv"
-	"strings"
-	"time"
-)
-
-var errNegativeNotAllowed = errors.New("unable to cast negative value")
-
-// ToTimeE casts an interface to a time.Time type.
-func ToTimeE(i interface{}) (tim time.Time, err error) {
-	return ToTimeInDefaultLocationE(i, time.UTC)
-}
-
-// ToTimeInDefaultLocationE casts an empty interface to time.Time,
-// interpreting inputs without a timezone to be in the given location,
-// or the local timezone if nil.
-func ToTimeInDefaultLocationE(i interface{}, location *time.Location) (tim time.Time, err error) {
-	i = indirect(i)
-
-	switch v := i.(type) {
-	case time.Time:
-		return v, nil
-	case string:
-		return StringToDateInDefaultLocation(v, location)
-	case json.Number:
-		s, err1 := ToInt64E(v)
-		if err1 != nil {
-			return time.Time{}, fmt.Errorf("unable to cast %#v of type %T to Time", i, i)
-		}
-		return time.Unix(s, 0), nil
-	case int:
-		return time.Unix(int64(v), 0), nil
-	case int64:
-		return time.Unix(v, 0), nil
-	case int32:
-		return time.Unix(int64(v), 0), nil
-	case uint:
-		return time.Unix(int64(v), 0), nil
-	case uint64:
-		return time.Unix(int64(v), 0), nil
-	case uint32:
-		return time.Unix(int64(v), 0), nil
-	default:
-		return time.Time{}, fmt.Errorf("unable to cast %#v of type %T to Time", i, i)
-	}
-}
-
-// ToDurationE casts an interface to a time.Duration type.
-func ToDurationE(i interface{}) (d time.Duration, err error) {
-	i = indirect(i)
-
-	switch s := i.(type) {
-	case time.Duration:
-		return s, nil
-	case int, int64, int32, int16, int8, uint, uint64, uint32, uint16, uint8:
-		d = time.Duration(ToInt64(s))
-		return
-	case float32, float64:
-		d = time.Duration(ToFloat64(s))
-		return
-	case string:
-		if strings.ContainsAny(s, "nsuµmh") {
-			d, err = time.ParseDuration(s)
-		} else {
-			d, err = time.ParseDuration(s + "ns")
-		}
-		return
-	case json.Number:
-		var v float64
-		v, err = s.Float64()
-		d = time.Duration(v)
-		return
-	default:
-		err = fmt.Errorf("unable to cast %#v of type %T to Duration", i, i)
-		return
-	}
-}
-
-// ToBoolE casts an interface to a bool type.
-func ToBoolE(i interface{}) (bool, error) {
-	i = indirect(i)
-
-	switch b := i.(type) {
-	case bool:
-		return b, nil
-	case nil:
-		return false, nil
-	case int:
-		return b != 0, nil
-	case int64:
-		return b != 0, nil
-	case int32:
-		return b != 0, nil
-	case int16:
-		return b != 0, nil
-	case int8:
-		return b != 0, nil
-	case uint:
-		return b != 0, nil
-	case uint64:
-		return b != 0, nil
-	case uint32:
-		return b != 0, nil
-	case uint16:
-		return b != 0, nil
-	case uint8:
-		return b != 0, nil
-	case float64:
-		return b != 0, nil
-	case float32:
-		return b != 0, nil
-	case time.Duration:
-		return b != 0, nil
-	case string:
-		return strconv.ParseBool(i.(string))
-	case json.Number:
-		v, err := ToInt64E(b)
-		if err == nil {
-			return v != 0, nil
-		}
-		return false, fmt.Errorf("unable to cast %#v of type %T to bool", i, i)
-	default:
-		return false, fmt.Errorf("unable to cast %#v of type %T to bool", i, i)
-	}
-}
-
-// ToFloat64E casts an interface to a float64 type.
-func ToFloat64E(i interface{}) (float64, error) {
-	i = indirect(i)
-
-	intv, ok := toInt(i)
-	if ok {
-		return float64(intv), nil
-	}
-
-	switch s := i.(type) {
-	case float64:
-		return s, nil
-	case float32:
-		return float64(s), nil
-	case int64:
-		return float64(s), nil
-	case int32:
-		return float64(s), nil
-	case int16:
-		return float64(s), nil
-	case int8:
-		return float64(s), nil
-	case uint:
-		return float64(s), nil
-	case uint64:
-		return float64(s), nil
-	case uint32:
-		return float64(s), nil
-	case uint16:
-		return float64(s), nil
-	case uint8:
-		return float64(s), nil
-	case string:
-		v, err := strconv.ParseFloat(s, 64)
-		if err == nil {
-			return v, nil
-		}
-		return 0, fmt.Errorf("unable to cast %#v of type %T to float64", i, i)
-	case json.Number:
-		v, err := s.Float64()
-		if err == nil {
-			return v, nil
-		}
-		return 0, fmt.Errorf("unable to cast %#v of type %T to float64", i, i)
-	case bool:
-		if s {
-			return 1, nil
-		}
-		return 0, nil
-	case nil:
-		return 0, nil
-	default:
-		return 0, fmt.Errorf("unable to cast %#v of type %T to float64", i, i)
-	}
-}
-
-// ToFloat32E casts an interface to a float32 type.
-func ToFloat32E(i interface{}) (float32, error) {
-	i = indirect(i)
-
-	intv, ok := toInt(i)
-	if ok {
-		return float32(intv), nil
-	}
-
-	switch s := i.(type) {
-	case float64:
-		return float32(s), nil
-	case float32:
-		return s, nil
-	case int64:
-		return float32(s), nil
-	case int32:
-		return float32(s), nil
-	case int16:
-		return float32(s), nil
-	case int8:
-		return float32(s), nil
-	case uint:
-		return float32(s), nil
-	case uint64:
-		return float32(s), nil
-	case uint32:
-		return float32(s), nil
-	case uint16:
-		return float32(s), nil
-	case uint8:
-		return float32(s), nil
-	case string:
-		v, err := strconv.ParseFloat(s, 32)
-		if err == nil {
-			return float32(v), nil
-		}
-		return 0, fmt.Errorf("unable to cast %#v of type %T to float32", i, i)
-	case json.Number:
-		v, err := s.Float64()
-		if err == nil {
-			return float32(v), nil
-		}
-		return 0, fmt.Errorf("unable to cast %#v of type %T to float32", i, i)
-	case bool:
-		if s {
-			return 1, nil
-		}
-		return 0, nil
-	case nil:
-		return 0, nil
-	default:
-		return 0, fmt.Errorf("unable to cast %#v of type %T to float32", i, i)
-	}
-}
-
-// ToInt64E casts an interface to an int64 type.
-func ToInt64E(i interface{}) (int64, error) {
-	i = indirect(i)
-
-	intv, ok := toInt(i)
-	if ok {
-		return int64(intv), nil
-	}
-
-	switch s := i.(type) {
-	case int64:
-		return s, nil
-	case int32:
-		return int64(s), nil
-	case int16:
-		return int64(s), nil
-	case int8:
-		return int64(s), nil
-	case uint:
-		return int64(s), nil
-	case uint64:
-		return int64(s), nil
-	case uint32:
-		return int64(s), nil
-	case uint16:
-		return int64(s), nil
-	case uint8:
-		return int64(s), nil
-	case float64:
-		return int64(s), nil
-	case float32:
-		return int64(s), nil
-	case string:
-		v, err := strconv.ParseInt(trimZeroDecimal(s), 0, 0)
-		if err == nil {
-			return v, nil
-		}
-		return 0, fmt.Errorf("unable to cast %#v of type %T to int64", i, i)
-	case json.Number:
-		return ToInt64E(string(s))
-	case bool:
-		if s {
-			return 1, nil
-		}
-		return 0, nil
-	case nil:
-		return 0, nil
-	default:
-		return 0, fmt.Errorf("unable to cast %#v of type %T to int64", i, i)
-	}
-}
-
-// ToInt32E casts an interface to an int32 type.
-func ToInt32E(i interface{}) (int32, error) {
-	i = indirect(i)
-
-	intv, ok := toInt(i)
-	if ok {
-		return int32(intv), nil
-	}
-
-	switch s := i.(type) {
-	case int64:
-		return int32(s), nil
-	case int32:
-		return s, nil
-	case int16:
-		return int32(s), nil
-	case int8:
-		return int32(s), nil
-	case uint:
-		return int32(s), nil
-	case uint64:
-		return int32(s), nil
-	case uint32:
-		return int32(s), nil
-	case uint16:
-		return int32(s), nil
-	case uint8:
-		return int32(s), nil
-	case float64:
-		return int32(s), nil
-	case float32:
-		return int32(s), nil
-	case string:
-		v, err := strconv.ParseInt(trimZeroDecimal(s), 0, 0)
-		if err == nil {
-			return int32(v), nil
-		}
-		return 0, fmt.Errorf("unable to cast %#v of type %T to int32", i, i)
-	case json.Number:
-		return ToInt32E(string(s))
-	case bool:
-		if s {
-			return 1, nil
-		}
-		return 0, nil
-	case nil:
-		return 0, nil
-	default:
-		return 0, fmt.Errorf("unable to cast %#v of type %T to int32", i, i)
-	}
-}
-
-// ToInt16E casts an interface to an int16 type.
-func ToInt16E(i interface{}) (int16, error) {
-	i = indirect(i)
-
-	intv, ok := toInt(i)
-	if ok {
-		return int16(intv), nil
-	}
-
-	switch s := i.(type) {
-	case int64:
-		return int16(s), nil
-	case int32:
-		return int16(s), nil
-	case int16:
-		return s, nil
-	case int8:
-		return int16(s), nil
-	case uint:
-		return int16(s), nil
-	case uint64:
-		return int16(s), nil
-	case uint32:
-		return int16(s), nil
-	case uint16:
-		return int16(s), nil
-	case uint8:
-		return int16(s), nil
-	case float64:
-		return int16(s), nil
-	case float32:
-		return int16(s), nil
-	case string:
-		v, err := strconv.ParseInt(trimZeroDecimal(s), 0, 0)
-		if err == nil {
-			return int16(v), nil
-		}
-		return 0, fmt.Errorf("unable to cast %#v of type %T to int16", i, i)
-	case json.Number:
-		return ToInt16E(string(s))
-	case bool:
-		if s {
-			return 1, nil
-		}
-		return 0, nil
-	case nil:
-		return 0, nil
-	default:
-		return 0, fmt.Errorf("unable to cast %#v of type %T to int16", i, i)
-	}
-}
-
-// ToInt8E casts an interface to an int8 type.
-func ToInt8E(i interface{}) (int8, error) {
-	i = indirect(i)
-
-	intv, ok := toInt(i)
-	if ok {
-		return int8(intv), nil
-	}
-
-	switch s := i.(type) {
-	case int64:
-		return int8(s), nil
-	case int32:
-		return int8(s), nil
-	case int16:
-		return int8(s), nil
-	case int8:
-		return s, nil
-	case uint:
-		return int8(s), nil
-	case uint64:
-		return int8(s), nil
-	case uint32:
-		return int8(s), nil
-	case uint16:
-		return int8(s), nil
-	case uint8:
-		return int8(s), nil
-	case float64:
-		return int8(s), nil
-	case float32:
-		return int8(s), nil
-	case string:
-		v, err := strconv.ParseInt(trimZeroDecimal(s), 0, 0)
-		if err == nil {
-			return int8(v), nil
-		}
-		return 0, fmt.Errorf("unable to cast %#v of type %T to int8", i, i)
-	case json.Number:
-		return ToInt8E(string(s))
-	case bool:
-		if s {
-			return 1, nil
-		}
-		return 0, nil
-	case nil:
-		return 0, nil
-	default:
-		return 0, fmt.Errorf("unable to cast %#v of type %T to int8", i, i)
-	}
-}
-
-// ToIntE casts an interface to an int type.
-func ToIntE(i interface{}) (int, error) {
-	i = indirect(i)
-
-	intv, ok := toInt(i)
-	if ok {
-		return intv, nil
-	}
-
-	switch s := i.(type) {
-	case int64:
-		return int(s), nil
-	case int32:
-		return int(s), nil
-	case int16:
-		return int(s), nil
-	case int8:
-		return int(s), nil
-	case uint:
-		return int(s), nil
-	case uint64:
-		return int(s), nil
-	case uint32:
-		return int(s), nil
-	case uint16:
-		return int(s), nil
-	case uint8:
-		return int(s), nil
-	case float64:
-		return int(s), nil
-	case float32:
-		return int(s), nil
-	case string:
-		v, err := strconv.ParseInt(trimZeroDecimal(s), 0, 0)
-		if err == nil {
-			return int(v), nil
-		}
-		return 0, fmt.Errorf("unable to cast %#v of type %T to int64", i, i)
-	case json.Number:
-		return ToIntE(string(s))
-	case bool:
-		if s {
-			return 1, nil
-		}
-		return 0, nil
-	case nil:
-		return 0, nil
-	default:
-		return 0, fmt.Errorf("unable to cast %#v of type %T to int", i, i)
-	}
-}
-
-// ToUintE casts an interface to a uint type.
-func ToUintE(i interface{}) (uint, error) {
-	i = indirect(i)
-
-	intv, ok := toInt(i)
-	if ok {
-		if intv < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint(intv), nil
-	}
-
-	switch s := i.(type) {
-	case string:
-		v, err := strconv.ParseInt(trimZeroDecimal(s), 0, 0)
-		if err == nil {
-			if v < 0 {
-				return 0, errNegativeNotAllowed
-			}
-			return uint(v), nil
-		}
-		return 0, fmt.Errorf("unable to cast %#v of type %T to uint", i, i)
-	case json.Number:
-		return ToUintE(string(s))
-	case int64:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint(s), nil
-	case int32:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint(s), nil
-	case int16:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint(s), nil
-	case int8:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint(s), nil
-	case uint:
-		return s, nil
-	case uint64:
-		return uint(s), nil
-	case uint32:
-		return uint(s), nil
-	case uint16:
-		return uint(s), nil
-	case uint8:
-		return uint(s), nil
-	case float64:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint(s), nil
-	case float32:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint(s), nil
-	case bool:
-		if s {
-			return 1, nil
-		}
-		return 0, nil
-	case nil:
-		return 0, nil
-	default:
-		return 0, fmt.Errorf("unable to cast %#v of type %T to uint", i, i)
-	}
-}
-
-// ToUint64E casts an interface to a uint64 type.
-func ToUint64E(i interface{}) (uint64, error) {
-	i = indirect(i)
-
-	intv, ok := toInt(i)
-	if ok {
-		if intv < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint64(intv), nil
-	}
-
-	switch s := i.(type) {
-	case string:
-		v, err := strconv.ParseInt(trimZeroDecimal(s), 0, 0)
-		if err == nil {
-			if v < 0 {
-				return 0, errNegativeNotAllowed
-			}
-			return uint64(v), nil
-		}
-		return 0, fmt.Errorf("unable to cast %#v of type %T to uint64", i, i)
-	case json.Number:
-		return ToUint64E(string(s))
-	case int64:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint64(s), nil
-	case int32:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint64(s), nil
-	case int16:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint64(s), nil
-	case int8:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint64(s), nil
-	case uint:
-		return uint64(s), nil
-	case uint64:
-		return s, nil
-	case uint32:
-		return uint64(s), nil
-	case uint16:
-		return uint64(s), nil
-	case uint8:
-		return uint64(s), nil
-	case float32:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint64(s), nil
-	case float64:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint64(s), nil
-	case bool:
-		if s {
-			return 1, nil
-		}
-		return 0, nil
-	case nil:
-		return 0, nil
-	default:
-		return 0, fmt.Errorf("unable to cast %#v of type %T to uint64", i, i)
-	}
-}
-
-// ToUint32E casts an interface to a uint32 type.
-func ToUint32E(i interface{}) (uint32, error) {
-	i = indirect(i)
-
-	intv, ok := toInt(i)
-	if ok {
-		if intv < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint32(intv), nil
-	}
-
-	switch s := i.(type) {
-	case string:
-		v, err := strconv.ParseInt(trimZeroDecimal(s), 0, 0)
-		if err == nil {
-			if v < 0 {
-				return 0, errNegativeNotAllowed
-			}
-			return uint32(v), nil
-		}
-		return 0, fmt.Errorf("unable to cast %#v of type %T to uint32", i, i)
-	case json.Number:
-		return ToUint32E(string(s))
-	case int64:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint32(s), nil
-	case int32:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint32(s), nil
-	case int16:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint32(s), nil
-	case int8:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint32(s), nil
-	case uint:
-		return uint32(s), nil
-	case uint64:
-		return uint32(s), nil
-	case uint32:
-		return s, nil
-	case uint16:
-		return uint32(s), nil
-	case uint8:
-		return uint32(s), nil
-	case float64:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint32(s), nil
-	case float32:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint32(s), nil
-	case bool:
-		if s {
-			return 1, nil
-		}
-		return 0, nil
-	case nil:
-		return 0, nil
-	default:
-		return 0, fmt.Errorf("unable to cast %#v of type %T to uint32", i, i)
-	}
-}
-
-// ToUint16E casts an interface to a uint16 type.
-func ToUint16E(i interface{}) (uint16, error) {
-	i = indirect(i)
-
-	intv, ok := toInt(i)
-	if ok {
-		if intv < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint16(intv), nil
-	}
-
-	switch s := i.(type) {
-	case string:
-		v, err := strconv.ParseInt(trimZeroDecimal(s), 0, 0)
-		if err == nil {
-			if v < 0 {
-				return 0, errNegativeNotAllowed
-			}
-			return uint16(v), nil
-		}
-		return 0, fmt.Errorf("unable to cast %#v of type %T to uint16", i, i)
-	case json.Number:
-		return ToUint16E(string(s))
-	case int64:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint16(s), nil
-	case int32:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint16(s), nil
-	case int16:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint16(s), nil
-	case int8:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint16(s), nil
-	case uint:
-		return uint16(s), nil
-	case uint64:
-		return uint16(s), nil
-	case uint32:
-		return uint16(s), nil
-	case uint16:
-		return s, nil
-	case uint8:
-		return uint16(s), nil
-	case float64:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint16(s), nil
-	case float32:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint16(s), nil
-	case bool:
-		if s {
-			return 1, nil
-		}
-		return 0, nil
-	case nil:
-		return 0, nil
-	default:
-		return 0, fmt.Errorf("unable to cast %#v of type %T to uint16", i, i)
-	}
-}
-
-// ToUint8E casts an interface to a uint type.
-func ToUint8E(i interface{}) (uint8, error) {
-	i = indirect(i)
-
-	intv, ok := toInt(i)
-	if ok {
-		if intv < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint8(intv), nil
-	}
-
-	switch s := i.(type) {
-	case string:
-		v, err := strconv.ParseInt(trimZeroDecimal(s), 0, 0)
-		if err == nil {
-			if v < 0 {
-				return 0, errNegativeNotAllowed
-			}
-			return uint8(v), nil
-		}
-		return 0, fmt.Errorf("unable to cast %#v of type %T to uint8", i, i)
-	case json.Number:
-		return ToUint8E(string(s))
-	case int64:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint8(s), nil
-	case int32:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint8(s), nil
-	case int16:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint8(s), nil
-	case int8:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint8(s), nil
-	case uint:
-		return uint8(s), nil
-	case uint64:
-		return uint8(s), nil
-	case uint32:
-		return uint8(s), nil
-	case uint16:
-		return uint8(s), nil
-	case uint8:
-		return s, nil
-	case float64:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint8(s), nil
-	case float32:
-		if s < 0 {
-			return 0, errNegativeNotAllowed
-		}
-		return uint8(s), nil
-	case bool:
-		if s {
-			return 1, nil
-		}
-		return 0, nil
-	case nil:
-		return 0, nil
-	default:
-		return 0, fmt.Errorf("unable to cast %#v of type %T to uint8", i, i)
-	}
-}
-
-// From html/template/content.go
-// Copyright 2011 The Go Authors. All rights reserved.
-// indirect returns the value, after dereferencing as many times
-// as necessary to reach the base type (or nil).
-func indirect(a interface{}) interface{} {
-	if a == nil {
-		return nil
-	}
-	if t := reflect.TypeOf(a); t.Kind() != reflect.Ptr {
-		// Avoid creating a reflect.Value if it's not a pointer.
-		return a
-	}
-	v := reflect.ValueOf(a)
-	for v.Kind() == reflect.Ptr && !v.IsNil() {
-		v = v.Elem()
-	}
-	return v.Interface()
-}
-
-// From html/template/content.go
-// Copyright 2011 The Go Authors. All rights reserved.
-// indirectToStringerOrError returns the value, after dereferencing as many times
-// as necessary to reach the base type (or nil) or an implementation of fmt.Stringer
-// or error,
-func indirectToStringerOrError(a interface{}) interface{} {
-	if a == nil {
-		return nil
-	}
-
-	var errorType = reflect.TypeOf((*error)(nil)).Elem()
-	var fmtStringerType = reflect.TypeOf((*fmt.Stringer)(nil)).Elem()
-
-	v := reflect.ValueOf(a)
-	for !v.Type().Implements(fmtStringerType) && !v.Type().Implements(errorType) && v.Kind() == reflect.Ptr && !v.IsNil() {
-		v = v.Elem()
-	}
-	return v.Interface()
-}
-
-// ToStringE casts an interface to a string type.
-func ToStringE(i interface{}) (string, error) {
-	i = indirectToStringerOrError(i)
-
-	switch s := i.(type) {
-	case string:
-		return s, nil
-	case bool:
-		return strconv.FormatBool(s), nil
-	case float64:
-		return strconv.FormatFloat(s, 'f', -1, 64), nil
-	case float32:
-		return strconv.FormatFloat(float64(s), 'f', -1, 32), nil
-	case int:
-		return strconv.Itoa(s), nil
-	case int64:
-		return strconv.FormatInt(s, 10), nil
-	case int32:
-		return strconv.Itoa(int(s)), nil
-	case int16:
-		return strconv.FormatInt(int64(s), 10), nil
-	case int8:
-		return strconv.FormatInt(int64(s), 10), nil
-	case uint:
-		return strconv.FormatUint(uint64(s), 10), nil
-	case uint64:
-		return strconv.FormatUint(uint64(s), 10), nil
-	case uint32:
-		return strconv.FormatUint(uint64(s), 10), nil
-	case uint16:
-		return strconv.FormatUint(uint64(s), 10), nil
-	case uint8:
-		return strconv.FormatUint(uint64(s), 10), nil
-	case json.Number:
-		return s.String(), nil
-	case []byte:
-		return string(s), nil
-	case template.HTML:
-		return string(s), nil
-	case template.URL:
-		return string(s), nil
-	case template.JS:
-		return string(s), nil
-	case template.CSS:
-		return string(s), nil
-	case template.HTMLAttr:
-		return string(s), nil
-	case nil:
-		return "", nil
-	case fmt.Stringer:
-		return s.String(), nil
-	case error:
-		return s.Error(), nil
-	default:
-		return "", fmt.Errorf("unable to cast %#v of type %T to string", i, i)
-	}
-}
-
-// ToStringMapStringE casts an interface to a map[string]string type.
-func ToStringMapStringE(i interface{}) (map[string]string, error) {
-	var m = map[string]string{}
-
-	switch v := i.(type) {
-	case map[string]string:
-		return v, nil
-	case map[string]interface{}:
-		for k, val := range v {
-			m[ToString(k)] = ToString(val)
-		}
-		return m, nil
-	case map[interface{}]string:
-		for k, val := range v {
-			m[ToString(k)] = ToString(val)
-		}
-		return m, nil
-	case map[interface{}]interface{}:
-		for k, val := range v {
-			m[ToString(k)] = ToString(val)
-		}
-		return m, nil
-	case string:
-		err := jsonStringToObject(v, &m)
-		return m, err
-	default:
-		return m, fmt.Errorf("unable to cast %#v of type %T to map[string]string", i, i)
-	}
-}
-
-// ToStringMapStringSliceE casts an interface to a map[string][]string type.
-func ToStringMapStringSliceE(i interface{}) (map[string][]string, error) {
-	var m = map[string][]string{}
-
-	switch v := i.(type) {
-	case map[string][]string:
-		return v, nil
-	case map[string][]interface{}:
-		for k, val := range v {
-			m[ToString(k)] = ToStringSlice(val)
-		}
-		return m, nil
-	case map[string]string:
-		for k, val := range v {
-			m[ToString(k)] = []string{val}
-		}
-	case map[string]interface{}:
-		for k, val := range v {
-			switch vt := val.(type) {
-			case []interface{}:
-				m[ToString(k)] = ToStringSlice(vt)
-			case []string:
-				m[ToString(k)] = vt
-			default:
-				m[ToString(k)] = []string{ToString(val)}
-			}
-		}
-		return m, nil
-	case map[interface{}][]string:
-		for k, val := range v {
-			m[ToString(k)] = ToStringSlice(val)
-		}
-		return m, nil
-	case map[interface{}]string:
-		for k, val := range v {
-			m[ToString(k)] = ToStringSlice(val)
-		}
-		return m, nil
-	case map[interface{}][]interface{}:
-		for k, val := range v {
-			m[ToString(k)] = ToStringSlice(val)
-		}
-		return m, nil
-	case map[interface{}]interface{}:
-		for k, val := range v {
-			key, err := ToStringE(k)
-			if err != nil {
-				return m, fmt.Errorf("unable to cast %#v of type %T to map[string][]string", i, i)
-			}
-			value, err := ToStringSliceE(val)
-			if err != nil {
-				return m, fmt.Errorf("unable to cast %#v of type %T to map[string][]string", i, i)
-			}
-			m[key] = value
-		}
-	case string:
-		err := jsonStringToObject(v, &m)
-		return m, err
-	default:
-		return m, fmt.Errorf("unable to cast %#v of type %T to map[string][]string", i, i)
-	}
-	return m, nil
-}
-
-// ToStringMapBoolE casts an interface to a map[string]bool type.
-func ToStringMapBoolE(i interface{}) (map[string]bool, error) {
-	var m = map[string]bool{}
-
-	switch v := i.(type) {
-	case map[interface{}]interface{}:
-		for k, val := range v {
-			m[ToString(k)] = ToBool(val)
-		}
-		return m, nil
-	case map[string]interface{}:
-		for k, val := range v {
-			m[ToString(k)] = ToBool(val)
-		}
-		return m, nil
-	case map[string]bool:
-		return v, nil
-	case string:
-		err := jsonStringToObject(v, &m)
-		return m, err
-	default:
-		return m, fmt.Errorf("unable to cast %#v of type %T to map[string]bool", i, i)
-	}
-}
-
-// ToStringMapE casts an interface to a map[string]interface{} type.
-func ToStringMapE(i interface{}) (map[string]interface{}, error) {
-	var m = map[string]interface{}{}
-
-	switch v := i.(type) {
-	case map[interface{}]interface{}:
-		for k, val := range v {
-			m[ToString(k)] = val
-		}
-		return m, nil
-	case map[string]interface{}:
-		return v, nil
-	case string:
-		err := jsonStringToObject(v, &m)
-		return m, err
-	default:
-		return m, fmt.Errorf("unable to cast %#v of type %T to map[string]interface{}", i, i)
-	}
-}
-
-// ToStringMapIntE casts an interface to a map[string]int{} type.
-func ToStringMapIntE(i interface{}) (map[string]int, error) {
-	var m = map[string]int{}
-	if i == nil {
-		return m, fmt.Errorf("unable to cast %#v of type %T to map[string]int", i, i)
-	}
-
-	switch v := i.(type) {
-	case map[interface{}]interface{}:
-		for k, val := range v {
-			m[ToString(k)] = ToInt(val)
-		}
-		return m, nil
-	case map[string]interface{}:
-		for k, val := range v {
-			m[k] = ToInt(val)
-		}
-		return m, nil
-	case map[string]int:
-		return v, nil
-	case string:
-		err := jsonStringToObject(v, &m)
-		return m, err
-	}
-
-	if reflect.TypeOf(i).Kind() != reflect.Map {
-		return m, fmt.Errorf("unable to cast %#v of type %T to map[string]int", i, i)
-	}
-
-	mVal := reflect.ValueOf(m)
-	v := reflect.ValueOf(i)
-	for _, keyVal := range v.MapKeys() {
-		val, err := ToIntE(v.MapIndex(keyVal).Interface())
-		if err != nil {
-			return m, fmt.Errorf("unable to cast %#v of type %T to map[string]int", i, i)
-		}
-		mVal.SetMapIndex(keyVal, reflect.ValueOf(val))
-	}
-	return m, nil
-}
-
-// ToStringMapInt64E casts an interface to a map[string]int64{} type.
-func ToStringMapInt64E(i interface{}) (map[string]int64, error) {
-	var m = map[string]int64{}
-	if i == nil {
-		return m, fmt.Errorf("unable to cast %#v of type %T to map[string]int64", i, i)
-	}
-
-	switch v := i.(type) {
-	case map[interface{}]interface{}:
-		for k, val := range v {
-			m[ToString(k)] = ToInt64(val)
-		}
-		return m, nil
-	case map[string]interface{}:
-		for k, val := range v {
-			m[k] = ToInt64(val)
-		}
-		return m, nil
-	case map[string]int64:
-		return v, nil
-	case string:
-		err := jsonStringToObject(v, &m)
-		return m, err
-	}
-
-	if reflect.TypeOf(i).Kind() != reflect.Map {
-		return m, fmt.Errorf("unable to cast %#v of type %T to map[string]int64", i, i)
-	}
-	mVal := reflect.ValueOf(m)
-	v := reflect.ValueOf(i)
-	for _, keyVal := range v.MapKeys() {
-		val, err := ToInt64E(v.MapIndex(keyVal).Interface())
-		if err != nil {
-			return m, fmt.Errorf("unable to cast %#v of type %T to map[string]int64", i, i)
-		}
-		mVal.SetMapIndex(keyVal, reflect.ValueOf(val))
-	}
-	return m, nil
-}
-
-// ToSliceE casts an interface to a []interface{} type.
-func ToSliceE(i interface{}) ([]interface{}, error) {
-	var s []interface{}
-
-	switch v := i.(type) {
-	case []interface{}:
-		return append(s, v...), nil
-	case []map[string]interface{}:
-		for _, u := range v {
-			s = append(s, u)
-		}
-		return s, nil
-	default:
-		return s, fmt.Errorf("unable to cast %#v of type %T to []interface{}", i, i)
-	}
-}
-
-// ToBoolSliceE casts an interface to a []bool type.
-func ToBoolSliceE(i interface{}) ([]bool, error) {
-	if i == nil {
-		return []bool{}, fmt.Errorf("unable to cast %#v of type %T to []bool", i, i)
-	}
-
-	switch v := i.(type) {
-	case []bool:
-		return v, nil
-	}
-
-	kind := reflect.TypeOf(i).Kind()
-	switch kind {
-	case reflect.Slice, reflect.Array:
-		s := reflect.ValueOf(i)
-		a := make([]bool, s.Len())
-		for j := 0; j < s.Len(); j++ {
-			val, err := ToBoolE(s.Index(j).Interface())
-			if err != nil {
-				return []bool{}, fmt.Errorf("unable to cast %#v of type %T to []bool", i, i)
-			}
-			a[j] = val
-		}
-		return a, nil
-	default:
-		return []bool{}, fmt.Errorf("unable to cast %#v of type %T to []bool", i, i)
-	}
-}
-
-// ToStringSliceE casts an interface to a []string type.
-func ToStringSliceE(i interface{}) ([]string, error) {
-	var a []string
-
-	switch v := i.(type) {
-	case []interface{}:
-		for _, u := range v {
-			a = append(a, ToString(u))
-		}
-		return a, nil
-	case []string:
-		return v, nil
-	case []int8:
-		for _, u := range v {
-			a = append(a, ToString(u))
-		}
-		return a, nil
-	case []int:
-		for _, u := range v {
-			a = append(a, ToString(u))
-		}
-		return a, nil
-	case []int32:
-		for _, u := range v {
-			a = append(a, ToString(u))
-		}
-		return a, nil
-	case []int64:
-		for _, u := range v {
-			a = append(a, ToString(u))
-		}
-		return a, nil
-	case []float32:
-		for _, u := range v {
-			a = append(a, ToString(u))
-		}
-		return a, nil
-	case []float64:
-		for _, u := range v {
-			a = append(a, ToString(u))
-		}
-		return a, nil
-	case string:
-		return strings.Fields(v), nil
-	case []error:
-		for _, err := range i.([]error) {
-			a = append(a, err.Error())
-		}
-		return a, nil
-	case interface{}:
-		str, err := ToStringE(v)
-		if err != nil {
-			return a, fmt.Errorf("unable to cast %#v of type %T to []string", i, i)
-		}
-		return []string{str}, nil
-	default:
-		return a, fmt.Errorf("unable to cast %#v of type %T to []string", i, i)
-	}
-}
-
-// ToIntSliceE casts an interface to a []int type.
-func ToIntSliceE(i interface{}) ([]int, error) {
-	if i == nil {
-		return []int{}, fmt.Errorf("unable to cast %#v of type %T to []int", i, i)
-	}
-
-	switch v := i.(type) {
-	case []int:
-		return v, nil
-	}
-
-	kind := reflect.TypeOf(i).Kind()
-	switch kind {
-	case reflect.Slice, reflect.Array:
-		s := reflect.ValueOf(i)
-		a := make([]int, s.Len())
-		for j := 0; j < s.Len(); j++ {
-			val, err := ToIntE(s.Index(j).Interface())
-			if err != nil {
-				return []int{}, fmt.Errorf("unable to cast %#v of type %T to []int", i, i)
-			}
-			a[j] = val
-		}
-		return a, nil
-	default:
-		return []int{}, fmt.Errorf("unable to cast %#v of type %T to []int", i, i)
-	}
-}
-
-// ToDurationSliceE casts an interface to a []time.Duration type.
-func ToDurationSliceE(i interface{}) ([]time.Duration, error) {
-	if i == nil {
-		return []time.Duration{}, fmt.Errorf("unable to cast %#v of type %T to []time.Duration", i, i)
-	}
-
-	switch v := i.(type) {
-	case []time.Duration:
-		return v, nil
-	}
-
-	kind := reflect.TypeOf(i).Kind()
-	switch kind {
-	case reflect.Slice, reflect.Array:
-		s := reflect.ValueOf(i)
-		a := make([]time.Duration, s.Len())
-		for j := 0; j < s.Len(); j++ {
-			val, err := ToDurationE(s.Index(j).Interface())
-			if err != nil {
-				return []time.Duration{}, fmt.Errorf("unable to cast %#v of type %T to []time.Duration", i, i)
-			}
-			a[j] = val
-		}
-		return a, nil
-	default:
-		return []time.Duration{}, fmt.Errorf("unable to cast %#v of type %T to []time.Duration", i, i)
-	}
-}
-
-// StringToDate attempts to parse a string into a time.Time type using a
-// predefined list of formats.  If no suitable format is found, an error is
-// returned.
-func StringToDate(s string) (time.Time, error) {
-	return parseDateWith(s, time.UTC, timeFormats)
-}
-
-// StringToDateInDefaultLocation casts an empty interface to a time.Time,
-// interpreting inputs without a timezone to be in the given location,
-// or the local timezone if nil.
-func StringToDateInDefaultLocation(s string, location *time.Location) (time.Time, error) {
-	return parseDateWith(s, location, timeFormats)
-}
-
-type timeFormatType int
-
-const (
-	timeFormatNoTimezone timeFormatType = iota
-	timeFormatNamedTimezone
-	timeFormatNumericTimezone
-	timeFormatNumericAndNamedTimezone
-	timeFormatTimeOnly
-)
-
-type timeFormat struct {
-	format string
-	typ    timeFormatType
-}
-
-func (f timeFormat) hasTimezone() bool {
-	// We don't include the formats with only named timezones, see
-	// https://github.com/golang/go/issues/19694#issuecomment-289103522
-	return f.typ >= timeFormatNumericTimezone && f.typ <= timeFormatNumericAndNamedTimezone
-}
-
-var (
-	timeFormats = []timeFormat{
-		// Keep common formats at the top.
-		{"2006-01-02", timeFormatNoTimezone},
-		{time.RFC3339, timeFormatNumericTimezone},
-		{"2006-01-02T15:04:05", timeFormatNoTimezone}, // iso8601 without timezone
-		{time.RFC1123Z, timeFormatNumericTimezone},
-		{time.RFC1123, timeFormatNamedTimezone},
-		{time.RFC822Z, timeFormatNumericTimezone},
-		{time.RFC822, timeFormatNamedTimezone},
-		{time.RFC850, timeFormatNamedTimezone},
-		{"2006-01-02 15:04:05.999999999 -0700 MST", timeFormatNumericAndNamedTimezone}, // Time.String()
-		{"2006-01-02T15:04:05-0700", timeFormatNumericTimezone},                        // RFC3339 without timezone hh:mm colon
-		{"2006-01-02 15:04:05Z0700", timeFormatNumericTimezone},                        // RFC3339 without T or timezone hh:mm colon
-		{"2006-01-02 15:04:05", timeFormatNoTimezone},
-		{time.ANSIC, timeFormatNoTimezone},
-		{time.UnixDate, timeFormatNamedTimezone},
-		{time.RubyDate, timeFormatNumericTimezone},
-		{"2006-01-02 15:04:05Z07:00", timeFormatNumericTimezone},
-		{"02 Jan 2006", timeFormatNoTimezone},
-		{"2006-01-02 15:04:05 -07:00", timeFormatNumericTimezone},
-		{"2006-01-02 15:04:05 -0700", timeFormatNumericTimezone},
-		{time.Kitchen, timeFormatTimeOnly},
-		{time.Stamp, timeFormatTimeOnly},
-		{time.StampMilli, timeFormatTimeOnly},
-		{time.StampMicro, timeFormatTimeOnly},
-		{time.StampNano, timeFormatTimeOnly},
-	}
-)
-
-func parseDateWith(s string, location *time.Location, formats []timeFormat) (d time.Time, e error) {
-
-	for _, format := range formats {
-		if d, e = time.Parse(format.format, s); e == nil {
-
-			// Some time formats have a zone name, but no offset, so it gets
-			// put in that zone name (not the default one passed in to us), but
-			// without that zone's offset. So set the location manually.
-			if format.typ <= timeFormatNamedTimezone {
-				if location == nil {
-					location = time.Local
-				}
-				year, month, day := d.Date()
-				hour, min, sec := d.Clock()
-				d = time.Date(year, month, day, hour, min, sec, d.Nanosecond(), location)
-			}
-
-			return
-		}
-	}
-	return d, fmt.Errorf("unable to parse date: %s", s)
-}
-
-// jsonStringToObject attempts to unmarshall a string as JSON into
-// the object passed as pointer.
-func jsonStringToObject(s string, v interface{}) error {
-	data := []byte(s)
-	return json.Unmarshal(data, v)
-}
-
-// toInt returns the int value of v if v or v's underlying type
-// is an int.
-// Note that this will return false for int64 etc. types.
-func toInt(v interface{}) (int, bool) {
-	switch v := v.(type) {
-	case int:
-		return v, true
-	case time.Weekday:
-		return int(v), true
-	case time.Month:
-		return int(v), true
-	default:
-		return 0, false
-	}
-}
-
-func trimZeroDecimal(s string) string {
-	var foundZero bool
-	for i := len(s); i > 0; i-- {
-		switch s[i-1] {
-		case '.':
-			if foundZero {
-				return s[:i-1]
-			}
-		case '0':
-			foundZero = true
-		default:
-			return s
-		}
-	}
-	return s
-}