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-rw-r--r--vendor/github.com/spf13/cast/LICENSE21
-rw-r--r--vendor/github.com/spf13/cast/cast.go159
-rw-r--r--vendor/github.com/spf13/cast/caste.go1166
3 files changed, 1346 insertions, 0 deletions
diff --git a/vendor/github.com/spf13/cast/LICENSE b/vendor/github.com/spf13/cast/LICENSE
new file mode 100644
index 000000000..4527efb9c
--- /dev/null
+++ b/vendor/github.com/spf13/cast/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2014 Steve Francia
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE. \ No newline at end of file
diff --git a/vendor/github.com/spf13/cast/cast.go b/vendor/github.com/spf13/cast/cast.go
new file mode 100644
index 000000000..8b8c208be
--- /dev/null
+++ b/vendor/github.com/spf13/cast/cast.go
@@ -0,0 +1,159 @@
+// 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 provides easy and safe casting in Go.
+package cast
+
+import "time"
+
+// ToBool casts an interface to a bool type.
+func ToBool(i interface{}) bool {
+ v, _ := ToBoolE(i)
+ return v
+}
+
+// ToTime casts an interface to a time.Time type.
+func ToTime(i interface{}) time.Time {
+ v, _ := ToTimeE(i)
+ return v
+}
+
+// ToDuration casts an interface to a time.Duration type.
+func ToDuration(i interface{}) time.Duration {
+ v, _ := ToDurationE(i)
+ return v
+}
+
+// ToFloat64 casts an interface to a float64 type.
+func ToFloat64(i interface{}) float64 {
+ v, _ := ToFloat64E(i)
+ return v
+}
+
+// ToFloat32 casts an interface to a float32 type.
+func ToFloat32(i interface{}) float32 {
+ v, _ := ToFloat32E(i)
+ return v
+}
+
+// ToInt64 casts an interface to an int64 type.
+func ToInt64(i interface{}) int64 {
+ v, _ := ToInt64E(i)
+ return v
+}
+
+// ToInt32 casts an interface to an int32 type.
+func ToInt32(i interface{}) int32 {
+ v, _ := ToInt32E(i)
+ return v
+}
+
+// ToInt16 casts an interface to an int16 type.
+func ToInt16(i interface{}) int16 {
+ v, _ := ToInt16E(i)
+ return v
+}
+
+// ToInt8 casts an interface to an int8 type.
+func ToInt8(i interface{}) int8 {
+ v, _ := ToInt8E(i)
+ return v
+}
+
+// ToInt casts an interface to an int type.
+func ToInt(i interface{}) int {
+ v, _ := ToIntE(i)
+ return v
+}
+
+// ToUint casts an interface to a uint type.
+func ToUint(i interface{}) uint {
+ v, _ := ToUintE(i)
+ return v
+}
+
+// ToUint64 casts an interface to a uint64 type.
+func ToUint64(i interface{}) uint64 {
+ v, _ := ToUint64E(i)
+ return v
+}
+
+// ToUint32 casts an interface to a uint32 type.
+func ToUint32(i interface{}) uint32 {
+ v, _ := ToUint32E(i)
+ return v
+}
+
+// ToUint16 casts an interface to a uint16 type.
+func ToUint16(i interface{}) uint16 {
+ v, _ := ToUint16E(i)
+ return v
+}
+
+// ToUint8 casts an interface to a uint8 type.
+func ToUint8(i interface{}) uint8 {
+ v, _ := ToUint8E(i)
+ return v
+}
+
+// ToString casts an interface to a string type.
+func ToString(i interface{}) string {
+ v, _ := ToStringE(i)
+ return v
+}
+
+// ToStringMapString casts an interface to a map[string]string type.
+func ToStringMapString(i interface{}) map[string]string {
+ v, _ := ToStringMapStringE(i)
+ return v
+}
+
+// ToStringMapStringSlice casts an interface to a map[string][]string type.
+func ToStringMapStringSlice(i interface{}) map[string][]string {
+ v, _ := ToStringMapStringSliceE(i)
+ return v
+}
+
+// ToStringMapBool casts an interface to a map[string]bool type.
+func ToStringMapBool(i interface{}) map[string]bool {
+ v, _ := ToStringMapBoolE(i)
+ return v
+}
+
+// ToStringMap casts an interface to a map[string]interface{} type.
+func ToStringMap(i interface{}) map[string]interface{} {
+ v, _ := ToStringMapE(i)
+ return v
+}
+
+// ToSlice casts an interface to a []interface{} type.
+func ToSlice(i interface{}) []interface{} {
+ v, _ := ToSliceE(i)
+ return v
+}
+
+// ToBoolSlice casts an interface to a []bool type.
+func ToBoolSlice(i interface{}) []bool {
+ v, _ := ToBoolSliceE(i)
+ return v
+}
+
+// ToStringSlice casts an interface to a []string type.
+func ToStringSlice(i interface{}) []string {
+ v, _ := ToStringSliceE(i)
+ return v
+}
+
+// ToIntSlice casts an interface to a []int type.
+func ToIntSlice(i interface{}) []int {
+ v, _ := ToIntSliceE(i)
+ return v
+}
+
+// ToDurationSlice casts an interface to a []time.Duration type.
+func ToDurationSlice(i interface{}) []time.Duration {
+ v, _ := ToDurationSliceE(i)
+ return v
+}
diff --git a/vendor/github.com/spf13/cast/caste.go b/vendor/github.com/spf13/cast/caste.go
new file mode 100644
index 000000000..4fe192893
--- /dev/null
+++ b/vendor/github.com/spf13/cast/caste.go
@@ -0,0 +1,1166 @@
+// 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) {
+ i = indirect(i)
+
+ switch v := i.(type) {
+ case time.Time:
+ return v, nil
+ case string:
+ return StringToDate(v)
+ 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
+ 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:
+ if i.(int) != 0 {
+ return true, nil
+ }
+ return false, nil
+ case string:
+ return strconv.ParseBool(i.(string))
+ 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)
+
+ switch s := i.(type) {
+ case float64:
+ return s, nil
+ case float32:
+ return float64(s), nil
+ case int:
+ 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 bool:
+ if s {
+ return 1, 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)
+
+ switch s := i.(type) {
+ case float64:
+ return float32(s), nil
+ case float32:
+ return s, nil
+ case int:
+ return float32(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 bool:
+ if s {
+ return 1, 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)
+
+ switch s := i.(type) {
+ case int:
+ return int64(s), nil
+ 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(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 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)
+
+ switch s := i.(type) {
+ case int:
+ return int32(s), nil
+ 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(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 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)
+
+ switch s := i.(type) {
+ case int:
+ return int16(s), nil
+ 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(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 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)
+
+ switch s := i.(type) {
+ case int:
+ return int8(s), nil
+ 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(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 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)
+
+ switch s := i.(type) {
+ case int:
+ return s, nil
+ 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(s, 0, 0)
+ if err == nil {
+ return int(v), nil
+ }
+ return 0, fmt.Errorf("unable to cast %#v of type %T to int", 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 int", i, i)
+ }
+}
+
+// ToUintE casts an interface to a uint type.
+func ToUintE(i interface{}) (uint, error) {
+ i = indirect(i)
+
+ switch s := i.(type) {
+ case string:
+ v, err := strconv.ParseUint(s, 0, 0)
+ if err == nil {
+ return uint(v), nil
+ }
+ return 0, fmt.Errorf("unable to cast %#v to uint: %s", i, err)
+ case int:
+ if s < 0 {
+ return 0, errNegativeNotAllowed
+ }
+ return uint(s), nil
+ 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)
+
+ switch s := i.(type) {
+ case string:
+ v, err := strconv.ParseUint(s, 0, 64)
+ if err == nil {
+ return v, nil
+ }
+ return 0, fmt.Errorf("unable to cast %#v to uint64: %s", i, err)
+ case int:
+ if s < 0 {
+ return 0, errNegativeNotAllowed
+ }
+ return uint64(s), nil
+ 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)
+
+ switch s := i.(type) {
+ case string:
+ v, err := strconv.ParseUint(s, 0, 32)
+ if err == nil {
+ return uint32(v), nil
+ }
+ return 0, fmt.Errorf("unable to cast %#v to uint32: %s", i, err)
+ case int:
+ if s < 0 {
+ return 0, errNegativeNotAllowed
+ }
+ return uint32(s), nil
+ 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)
+
+ switch s := i.(type) {
+ case string:
+ v, err := strconv.ParseUint(s, 0, 16)
+ if err == nil {
+ return uint16(v), nil
+ }
+ return 0, fmt.Errorf("unable to cast %#v to uint16: %s", i, err)
+ case int:
+ if s < 0 {
+ return 0, errNegativeNotAllowed
+ }
+ return uint16(s), nil
+ 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)
+
+ switch s := i.(type) {
+ case string:
+ v, err := strconv.ParseUint(s, 0, 8)
+ if err == nil {
+ return uint8(v), nil
+ }
+ return 0, fmt.Errorf("unable to cast %#v to uint8: %s", i, err)
+ case int:
+ if s < 0 {
+ return 0, errNegativeNotAllowed
+ }
+ return uint8(s), nil
+ 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.FormatInt(int64(s), 10), nil
+ case uint64:
+ return strconv.FormatInt(int64(s), 10), nil
+ case uint32:
+ return strconv.FormatInt(int64(s), 10), nil
+ case uint16:
+ return strconv.FormatInt(int64(s), 10), nil
+ case uint8:
+ return strconv.FormatInt(int64(s), 10), 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)
+ }