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vendor: github.com/mitchellh/mapstructure v1.5.0 (#4222)

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Milos Gajdos 2023-12-29 23:04:28 +00:00 committed by GitHub
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7 changed files with 635 additions and 115 deletions
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2
go.mod
View file

@ -20,7 +20,7 @@ require (
github.com/gorilla/mux v1.8.1
github.com/hashicorp/golang-lru/arc/v2 v2.0.5
github.com/klauspost/compress v1.17.4
github.com/mitchellh/mapstructure v1.1.2
github.com/mitchellh/mapstructure v1.5.0
github.com/opencontainers/go-digest v1.0.0
github.com/opencontainers/image-spec v1.0.2
github.com/redis/go-redis/extra/redisotel/v9 v9.0.5

4
go.sum
View file

@ -171,8 +171,8 @@ github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+
github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
github.com/matttproud/golang_protobuf_extensions v1.0.4 h1:mmDVorXM7PCGKw94cs5zkfA9PSy5pEvNWRP0ET0TIVo=
github.com/matttproud/golang_protobuf_extensions v1.0.4/go.mod h1:BSXmuO+STAnVfrANrmjBb36TMTDstsz7MSK+HVaYKv4=
github.com/mitchellh/mapstructure v1.1.2 h1:fmNYVwqnSfB9mZU6OS2O6GsXM+wcskZDuKQzvN1EDeE=
github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
github.com/mitchellh/mapstructure v1.5.0 h1:jeMsZIYE/09sWLaz43PL7Gy6RuMjD2eJVyuac5Z2hdY=
github.com/mitchellh/mapstructure v1.5.0/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=

8
vendor/github.com/mitchellh/mapstructure/.travis.yml generated vendored
View file

@ -1,8 +0,0 @@
language: go
go:
- "1.11.x"
- tip
script:
- go test

75
vendor/github.com/mitchellh/mapstructure/CHANGELOG.md generated vendored
View file

@ -1,3 +1,78 @@
## 1.5.0
* New option `IgnoreUntaggedFields` to ignore decoding to any fields
without `mapstructure` (or the configured tag name) set [GH-277]
* New option `ErrorUnset` which makes it an error if any fields
in a target struct are not set by the decoding process. [GH-225]
* New function `OrComposeDecodeHookFunc` to help compose decode hooks. [GH-240]
* Decoding to slice from array no longer crashes [GH-265]
* Decode nested struct pointers to map [GH-271]
* Fix issue where `,squash` was ignored if `Squash` option was set. [GH-280]
* Fix issue where fields with `,omitempty` would sometimes decode
into a map with an empty string key [GH-281]
## 1.4.3
* Fix cases where `json.Number` didn't decode properly [GH-261]
## 1.4.2
* Custom name matchers to support any sort of casing, formatting, etc. for
field names. [GH-250]
* Fix possible panic in ComposeDecodeHookFunc [GH-251]
## 1.4.1
* Fix regression where `*time.Time` value would be set to empty and not be sent
to decode hooks properly [GH-232]
## 1.4.0
* A new decode hook type `DecodeHookFuncValue` has been added that has
access to the full values. [GH-183]
* Squash is now supported with embedded fields that are struct pointers [GH-205]
* Empty strings will convert to 0 for all numeric types when weakly decoding [GH-206]
## 1.3.3
* Decoding maps from maps creates a settable value for decode hooks [GH-203]
## 1.3.2
* Decode into interface type with a struct value is supported [GH-187]
## 1.3.1
* Squash should only squash embedded structs. [GH-194]
## 1.3.0
* Added `",omitempty"` support. This will ignore zero values in the source
structure when encoding. [GH-145]
## 1.2.3
* Fix duplicate entries in Keys list with pointer values. [GH-185]
## 1.2.2
* Do not add unsettable (unexported) values to the unused metadata key
or "remain" value. [GH-150]
## 1.2.1
* Go modules checksum mismatch fix
## 1.2.0
* Added support to capture unused values in a field using the `",remain"` value
in the mapstructure tag. There is an example to showcase usage.
* Added `DecoderConfig` option to always squash embedded structs
* `json.Number` can decode into `uint` types
* Empty slices are preserved and not replaced with nil slices
* Fix panic that can occur in when decoding a map into a nil slice of structs
* Improved package documentation for godoc
## 1.1.2
* Fix error when decode hook decodes interface implementation into interface

94
vendor/github.com/mitchellh/mapstructure/decode_hooks.go generated vendored
View file

@ -1,6 +1,7 @@
package mapstructure
import (
"encoding"
"errors"
"fmt"
"net"
@ -16,10 +17,11 @@ func typedDecodeHook(h DecodeHookFunc) DecodeHookFunc {
// Create variables here so we can reference them with the reflect pkg
var f1 DecodeHookFuncType
var f2 DecodeHookFuncKind
var f3 DecodeHookFuncValue
// Fill in the variables into this interface and the rest is done
// automatically using the reflect package.
potential := []interface{}{f1, f2}
potential := []interface{}{f1, f2, f3}
v := reflect.ValueOf(h)
vt := v.Type()
@ -38,13 +40,15 @@ func typedDecodeHook(h DecodeHookFunc) DecodeHookFunc {
// that took reflect.Kind instead of reflect.Type.
func DecodeHookExec(
raw DecodeHookFunc,
from reflect.Type, to reflect.Type,
data interface{}) (interface{}, error) {
from reflect.Value, to reflect.Value) (interface{}, error) {
switch f := typedDecodeHook(raw).(type) {
case DecodeHookFuncType:
return f(from, to, data)
return f(from.Type(), to.Type(), from.Interface())
case DecodeHookFuncKind:
return f(from.Kind(), to.Kind(), data)
return f(from.Kind(), to.Kind(), from.Interface())
case DecodeHookFuncValue:
return f(from, to)
default:
return nil, errors.New("invalid decode hook signature")
}
@ -56,28 +60,45 @@ func DecodeHookExec(
// The composed funcs are called in order, with the result of the
// previous transformation.
func ComposeDecodeHookFunc(fs ...DecodeHookFunc) DecodeHookFunc {
return func(
f reflect.Type,
t reflect.Type,
data interface{}) (interface{}, error) {
return func(f reflect.Value, t reflect.Value) (interface{}, error) {
var err error
data := f.Interface()
newFrom := f
for _, f1 := range fs {
data, err = DecodeHookExec(f1, f, t, data)
data, err = DecodeHookExec(f1, newFrom, t)
if err != nil {
return nil, err
}
// Modify the from kind to be correct with the new data
f = nil
if val := reflect.ValueOf(data); val.IsValid() {
f = val.Type()
}
newFrom = reflect.ValueOf(data)
}
return data, nil
}
}
// OrComposeDecodeHookFunc executes all input hook functions until one of them returns no error. In that case its value is returned.
// If all hooks return an error, OrComposeDecodeHookFunc returns an error concatenating all error messages.
func OrComposeDecodeHookFunc(ff ...DecodeHookFunc) DecodeHookFunc {
return func(a, b reflect.Value) (interface{}, error) {
var allErrs string
var out interface{}
var err error
for _, f := range ff {
out, err = DecodeHookExec(f, a, b)
if err != nil {
allErrs += err.Error() + "\n"
continue
}
return out, nil
}
return nil, errors.New(allErrs)
}
}
// StringToSliceHookFunc returns a DecodeHookFunc that converts
// string to []string by splitting on the given sep.
func StringToSliceHookFunc(sep string) DecodeHookFunc {
@ -215,3 +236,44 @@ func WeaklyTypedHook(
return data, nil
}
func RecursiveStructToMapHookFunc() DecodeHookFunc {
return func(f reflect.Value, t reflect.Value) (interface{}, error) {
if f.Kind() != reflect.Struct {
return f.Interface(), nil
}
var i interface{} = struct{}{}
if t.Type() != reflect.TypeOf(&i).Elem() {
return f.Interface(), nil
}
m := make(map[string]interface{})
t.Set(reflect.ValueOf(m))
return f.Interface(), nil
}
}
// TextUnmarshallerHookFunc returns a DecodeHookFunc that applies
// strings to the UnmarshalText function, when the target type
// implements the encoding.TextUnmarshaler interface
func TextUnmarshallerHookFunc() DecodeHookFuncType {
return func(
f reflect.Type,
t reflect.Type,
data interface{}) (interface{}, error) {
if f.Kind() != reflect.String {
return data, nil
}
result := reflect.New(t).Interface()
unmarshaller, ok := result.(encoding.TextUnmarshaler)
if !ok {
return data, nil
}
if err := unmarshaller.UnmarshalText([]byte(data.(string))); err != nil {
return nil, err
}
return result, nil
}
}

563
vendor/github.com/mitchellh/mapstructure/mapstructure.go generated vendored
View file

@ -1,10 +1,161 @@
// Package mapstructure exposes functionality to convert an arbitrary
// map[string]interface{} into a native Go structure.
// Package mapstructure exposes functionality to convert one arbitrary
// Go type into another, typically to convert a map[string]interface{}
// into a native Go structure.
//
// The Go structure can be arbitrarily complex, containing slices,
// other structs, etc. and the decoder will properly decode nested
// maps and so on into the proper structures in the native Go struct.
// See the examples to see what the decoder is capable of.
//
// The simplest function to start with is Decode.
//
// Field Tags
//
// When decoding to a struct, mapstructure will use the field name by
// default to perform the mapping. For example, if a struct has a field
// "Username" then mapstructure will look for a key in the source value
// of "username" (case insensitive).
//
// type User struct {
// Username string
// }
//
// You can change the behavior of mapstructure by using struct tags.
// The default struct tag that mapstructure looks for is "mapstructure"
// but you can customize it using DecoderConfig.
//
// Renaming Fields
//
// To rename the key that mapstructure looks for, use the "mapstructure"
// tag and set a value directly. For example, to change the "username" example
// above to "user":
//
// type User struct {
// Username string `mapstructure:"user"`
// }
//
// Embedded Structs and Squashing
//
// Embedded structs are treated as if they're another field with that name.
// By default, the two structs below are equivalent when decoding with
// mapstructure:
//
// type Person struct {
// Name string
// }
//
// type Friend struct {
// Person
// }
//
// type Friend struct {
// Person Person
// }
//
// This would require an input that looks like below:
//
// map[string]interface{}{
// "person": map[string]interface{}{"name": "alice"},
// }
//
// If your "person" value is NOT nested, then you can append ",squash" to
// your tag value and mapstructure will treat it as if the embedded struct
// were part of the struct directly. Example:
//
// type Friend struct {
// Person `mapstructure:",squash"`
// }
//
// Now the following input would be accepted:
//
// map[string]interface{}{
// "name": "alice",
// }
//
// When decoding from a struct to a map, the squash tag squashes the struct
// fields into a single map. Using the example structs from above:
//
// Friend{Person: Person{Name: "alice"}}
//
// Will be decoded into a map:
//
// map[string]interface{}{
// "name": "alice",
// }
//
// DecoderConfig has a field that changes the behavior of mapstructure
// to always squash embedded structs.
//
// Remainder Values
//
// If there are any unmapped keys in the source value, mapstructure by
// default will silently ignore them. You can error by setting ErrorUnused
// in DecoderConfig. If you're using Metadata you can also maintain a slice
// of the unused keys.
//
// You can also use the ",remain" suffix on your tag to collect all unused
// values in a map. The field with this tag MUST be a map type and should
// probably be a "map[string]interface{}" or "map[interface{}]interface{}".
// See example below:
//
// type Friend struct {
// Name string
// Other map[string]interface{} `mapstructure:",remain"`
// }
//
// Given the input below, Other would be populated with the other
// values that weren't used (everything but "name"):
//
// map[string]interface{}{
// "name": "bob",
// "address": "123 Maple St.",
// }
//
// Omit Empty Values
//
// When decoding from a struct to any other value, you may use the
// ",omitempty" suffix on your tag to omit that value if it equates to
// the zero value. The zero value of all types is specified in the Go
// specification.
//
// For example, the zero type of a numeric type is zero ("0"). If the struct
// field value is zero and a numeric type, the field is empty, and it won't
// be encoded into the destination type.
//
// type Source struct {
// Age int `mapstructure:",omitempty"`
// }
//
// Unexported fields
//
// Since unexported (private) struct fields cannot be set outside the package
// where they are defined, the decoder will simply skip them.
//
// For this output type definition:
//
// type Exported struct {
// private string // this unexported field will be skipped
// Public string
// }
//
// Using this map as input:
//
// map[string]interface{}{
// "private": "I will be ignored",
// "Public": "I made it through!",
// }
//
// The following struct will be decoded:
//
// type Exported struct {
// private: "" // field is left with an empty string (zero value)
// Public: "I made it through!"
// }
//
// Other Configuration
//
// mapstructure is highly configurable. See the DecoderConfig struct
// for other features and options that are supported.
package mapstructure
import (
@ -21,10 +172,11 @@ import (
// data transformations. See "DecodeHook" in the DecoderConfig
// struct.
//
// The type should be DecodeHookFuncType or DecodeHookFuncKind.
// Either is accepted. Types are a superset of Kinds (Types can return
// Kinds) and are generally a richer thing to use, but Kinds are simpler
// if you only need those.
// The type must be one of DecodeHookFuncType, DecodeHookFuncKind, or
// DecodeHookFuncValue.
// Values are a superset of Types (Values can return types), and Types are a
// superset of Kinds (Types can return Kinds) and are generally a richer thing
// to use, but Kinds are simpler if you only need those.
//
// The reason DecodeHookFunc is multi-typed is for backwards compatibility:
// we started with Kinds and then realized Types were the better solution,
@ -40,15 +192,22 @@ type DecodeHookFuncType func(reflect.Type, reflect.Type, interface{}) (interface
// source and target types.
type DecodeHookFuncKind func(reflect.Kind, reflect.Kind, interface{}) (interface{}, error)
// DecodeHookFuncValue is a DecodeHookFunc which has complete access to both the source and target
// values.
type DecodeHookFuncValue func(from reflect.Value, to reflect.Value) (interface{}, error)
// DecoderConfig is the configuration that is used to create a new decoder
// and allows customization of various aspects of decoding.
type DecoderConfig struct {
// DecodeHook, if set, will be called before any decoding and any
// type conversion (if WeaklyTypedInput is on). This lets you modify
// the values before they're set down onto the resulting struct.
// the values before they're set down onto the resulting struct. The
// DecodeHook is called for every map and value in the input. This means
// that if a struct has embedded fields with squash tags the decode hook
// is called only once with all of the input data, not once for each
// embedded struct.
//
// If an error is returned, the entire decode will fail with that
// error.
// If an error is returned, the entire decode will fail with that error.
DecodeHook DecodeHookFunc
// If ErrorUnused is true, then it is an error for there to exist
@ -56,6 +215,12 @@ type DecoderConfig struct {
// (extra keys).
ErrorUnused bool
// If ErrorUnset is true, then it is an error for there to exist
// fields in the result that were not set in the decoding process
// (extra fields). This only applies to decoding to a struct. This
// will affect all nested structs as well.
ErrorUnset bool
// ZeroFields, if set to true, will zero fields before writing them.
// For example, a map will be emptied before decoded values are put in
// it. If this is false, a map will be merged.
@ -80,6 +245,14 @@ type DecoderConfig struct {
//
WeaklyTypedInput bool
// Squash will squash embedded structs. A squash tag may also be
// added to an individual struct field using a tag. For example:
//
// type Parent struct {
// Child `mapstructure:",squash"`
// }
Squash bool
// Metadata is the struct that will contain extra metadata about
// the decoding. If this is nil, then no metadata will be tracked.
Metadata *Metadata
@ -91,6 +264,15 @@ type DecoderConfig struct {
// The tag name that mapstructure reads for field names. This
// defaults to "mapstructure"
TagName string
// IgnoreUntaggedFields ignores all struct fields without explicit
// TagName, comparable to `mapstructure:"-"` as default behaviour.
IgnoreUntaggedFields bool
// MatchName is the function used to match the map key to the struct
// field name or tag. Defaults to `strings.EqualFold`. This can be used
// to implement case-sensitive tag values, support snake casing, etc.
MatchName func(mapKey, fieldName string) bool
}
// A Decoder takes a raw interface value and turns it into structured
@ -112,6 +294,11 @@ type Metadata struct {
// Unused is a slice of keys that were found in the raw value but
// weren't decoded since there was no matching field in the result interface
Unused []string
// Unset is a slice of field names that were found in the result interface
// but weren't set in the decoding process since there was no matching value
// in the input
Unset []string
}
// Decode takes an input structure and uses reflection to translate it to
@ -203,12 +390,20 @@ func NewDecoder(config *DecoderConfig) (*Decoder, error) {
if config.Metadata.Unused == nil {
config.Metadata.Unused = make([]string, 0)
}
if config.Metadata.Unset == nil {
config.Metadata.Unset = make([]string, 0)
}
}
if config.TagName == "" {
config.TagName = "mapstructure"
}
if config.MatchName == nil {
config.MatchName = strings.EqualFold
}
result := &Decoder{
config: config,
}
@ -261,9 +456,7 @@ func (d *Decoder) decode(name string, input interface{}, outVal reflect.Value) e
if d.config.DecodeHook != nil {
// We have a DecodeHook, so let's pre-process the input.
var err error
input, err = DecodeHookExec(
d.config.DecodeHook,
inputVal.Type(), outVal.Type(), input)
input, err = DecodeHookExec(d.config.DecodeHook, inputVal, outVal)
if err != nil {
return fmt.Errorf("error decoding '%s': %s", name, err)
}
@ -271,6 +464,7 @@ func (d *Decoder) decode(name string, input interface{}, outVal reflect.Value) e
var err error
outputKind := getKind(outVal)
addMetaKey := true
switch outputKind {
case reflect.Bool:
err = d.decodeBool(name, input, outVal)
@ -289,7 +483,7 @@ func (d *Decoder) decode(name string, input interface{}, outVal reflect.Value) e
case reflect.Map:
err = d.decodeMap(name, input, outVal)
case reflect.Ptr:
err = d.decodePtr(name, input, outVal)
addMetaKey, err = d.decodePtr(name, input, outVal)
case reflect.Slice:
err = d.decodeSlice(name, input, outVal)
case reflect.Array:
@ -303,7 +497,7 @@ func (d *Decoder) decode(name string, input interface{}, outVal reflect.Value) e
// If we reached here, then we successfully decoded SOMETHING, so
// mark the key as used if we're tracking metainput.
if d.config.Metadata != nil && name != "" {
if addMetaKey && d.config.Metadata != nil && name != "" {
d.config.Metadata.Keys = append(d.config.Metadata.Keys, name)
}
@ -314,7 +508,34 @@ func (d *Decoder) decode(name string, input interface{}, outVal reflect.Value) e
// value to "data" of that type.
func (d *Decoder) decodeBasic(name string, data interface{}, val reflect.Value) error {
if val.IsValid() && val.Elem().IsValid() {
return d.decode(name, data, val.Elem())
elem := val.Elem()
// If we can't address this element, then its not writable. Instead,
// we make a copy of the value (which is a pointer and therefore
// writable), decode into that, and replace the whole value.
copied := false
if !elem.CanAddr() {
copied = true
// Make *T
copy := reflect.New(elem.Type())
// *T = elem
copy.Elem().Set(elem)
// Set elem so we decode into it
elem = copy
}
// Decode. If we have an error then return. We also return right
// away if we're not a copy because that means we decoded directly.
if err := d.decode(name, data, elem); err != nil || !copied {
return err
}
// If we're a copy, we need to set te final result
val.Set(elem.Elem())
return nil
}
dataVal := reflect.ValueOf(data)
@ -386,8 +607,8 @@ func (d *Decoder) decodeString(name string, data interface{}, val reflect.Value)
if !converted {
return fmt.Errorf(
"'%s' expected type '%s', got unconvertible type '%s'",
name, val.Type(), dataVal.Type())
"'%s' expected type '%s', got unconvertible type '%s', value: '%v'",
name, val.Type(), dataVal.Type(), data)
}
return nil
@ -412,7 +633,12 @@ func (d *Decoder) decodeInt(name string, data interface{}, val reflect.Value) er
val.SetInt(0)
}
case dataKind == reflect.String && d.config.WeaklyTypedInput:
i, err := strconv.ParseInt(dataVal.String(), 0, val.Type().Bits())
str := dataVal.String()
if str == "" {
str = "0"
}
i, err := strconv.ParseInt(str, 0, val.Type().Bits())
if err == nil {
val.SetInt(i)
} else {
@ -428,8 +654,8 @@ func (d *Decoder) decodeInt(name string, data interface{}, val reflect.Value) er
val.SetInt(i)
default:
return fmt.Errorf(
"'%s' expected type '%s', got unconvertible type '%s'",
name, val.Type(), dataVal.Type())
"'%s' expected type '%s', got unconvertible type '%s', value: '%v'",
name, val.Type(), dataVal.Type(), data)
}
return nil
@ -438,6 +664,7 @@ func (d *Decoder) decodeInt(name string, data interface{}, val reflect.Value) er
func (d *Decoder) decodeUint(name string, data interface{}, val reflect.Value) error {
dataVal := reflect.Indirect(reflect.ValueOf(data))
dataKind := getKind(dataVal)
dataType := dataVal.Type()
switch {
case dataKind == reflect.Int:
@ -463,16 +690,29 @@ func (d *Decoder) decodeUint(name string, data interface{}, val reflect.Value) e
val.SetUint(0)
}
case dataKind == reflect.String && d.config.WeaklyTypedInput:
i, err := strconv.ParseUint(dataVal.String(), 0, val.Type().Bits())
str := dataVal.String()
if str == "" {
str = "0"
}
i, err := strconv.ParseUint(str, 0, val.Type().Bits())
if err == nil {
val.SetUint(i)
} else {
return fmt.Errorf("cannot parse '%s' as uint: %s", name, err)
}
case dataType.PkgPath() == "encoding/json" && dataType.Name() == "Number":
jn := data.(json.Number)
i, err := strconv.ParseUint(string(jn), 0, 64)
if err != nil {
return fmt.Errorf(
"error decoding json.Number into %s: %s", name, err)
}
val.SetUint(i)
default:
return fmt.Errorf(
"'%s' expected type '%s', got unconvertible type '%s'",
name, val.Type(), dataVal.Type())
"'%s' expected type '%s', got unconvertible type '%s', value: '%v'",
name, val.Type(), dataVal.Type(), data)
}
return nil
@ -502,8 +742,8 @@ func (d *Decoder) decodeBool(name string, data interface{}, val reflect.Value) e
}
default:
return fmt.Errorf(
"'%s' expected type '%s', got unconvertible type '%s'",
name, val.Type(), dataVal.Type())
"'%s' expected type '%s', got unconvertible type '%s', value: '%v'",
name, val.Type(), dataVal.Type(), data)
}
return nil
@ -528,7 +768,12 @@ func (d *Decoder) decodeFloat(name string, data interface{}, val reflect.Value)
val.SetFloat(0)
}
case dataKind == reflect.String && d.config.WeaklyTypedInput:
f, err := strconv.ParseFloat(dataVal.String(), val.Type().Bits())
str := dataVal.String()
if str == "" {
str = "0"
}
f, err := strconv.ParseFloat(str, val.Type().Bits())
if err == nil {
val.SetFloat(f)
} else {
@ -544,8 +789,8 @@ func (d *Decoder) decodeFloat(name string, data interface{}, val reflect.Value)
val.SetFloat(i)
default:
return fmt.Errorf(
"'%s' expected type '%s', got unconvertible type '%s'",
name, val.Type(), dataVal.Type())
"'%s' expected type '%s', got unconvertible type '%s', value: '%v'",
name, val.Type(), dataVal.Type(), data)
}
return nil
@ -596,7 +841,7 @@ func (d *Decoder) decodeMapFromSlice(name string, dataVal reflect.Value, val ref
for i := 0; i < dataVal.Len(); i++ {
err := d.decode(
fmt.Sprintf("%s[%d]", name, i),
name+"["+strconv.Itoa(i)+"]",
dataVal.Index(i).Interface(), val)
if err != nil {
return err
@ -629,7 +874,7 @@ func (d *Decoder) decodeMapFromMap(name string, dataVal reflect.Value, val refle
}
for _, k := range dataVal.MapKeys() {
fieldName := fmt.Sprintf("%s[%s]", name, k)
fieldName := name + "[" + k.String() + "]"
// First decode the key into the proper type
currentKey := reflect.Indirect(reflect.New(valKeyType))
@ -678,27 +923,48 @@ func (d *Decoder) decodeMapFromStruct(name string, dataVal reflect.Value, val re
}
tagValue := f.Tag.Get(d.config.TagName)
tagParts := strings.Split(tagValue, ",")
keyName := f.Name
if tagValue == "" && d.config.IgnoreUntaggedFields {
continue
}
// If Squash is set in the config, we squash the field down.
squash := d.config.Squash && v.Kind() == reflect.Struct && f.Anonymous
v = dereferencePtrToStructIfNeeded(v, d.config.TagName)
// Determine the name of the key in the map
keyName := f.Name
if tagParts[0] != "" {
if tagParts[0] == "-" {
if index := strings.Index(tagValue, ","); index != -1 {
if tagValue[:index] == "-" {
continue
}
keyName = tagParts[0]
}
// If "squash" is specified in the tag, we squash the field down.
squash := false
for _, tag := range tagParts[1:] {
if tag == "squash" {
squash = true
break
// If "omitempty" is specified in the tag, it ignores empty values.
if strings.Index(tagValue[index+1:], "omitempty") != -1 && isEmptyValue(v) {
continue
}
}
if squash && v.Kind() != reflect.Struct {
return fmt.Errorf("cannot squash non-struct type '%s'", v.Type())
// If "squash" is specified in the tag, we squash the field down.
squash = squash || strings.Index(tagValue[index+1:], "squash") != -1
if squash {
// When squashing, the embedded type can be a pointer to a struct.
if v.Kind() == reflect.Ptr && v.Elem().Kind() == reflect.Struct {
v = v.Elem()
}
// The final type must be a struct
if v.Kind() != reflect.Struct {
return fmt.Errorf("cannot squash non-struct type '%s'", v.Type())
}
}
if keyNameTagValue := tagValue[:index]; keyNameTagValue != "" {
keyName = keyNameTagValue
}
} else if len(tagValue) > 0 {
if tagValue == "-" {
continue
}
keyName = tagValue
}
switch v.Kind() {
@ -713,11 +979,22 @@ func (d *Decoder) decodeMapFromStruct(name string, dataVal reflect.Value, val re
mType := reflect.MapOf(vKeyType, vElemType)
vMap := reflect.MakeMap(mType)
err := d.decode(keyName, x.Interface(), vMap)
// Creating a pointer to a map so that other methods can completely
// overwrite the map if need be (looking at you decodeMapFromMap). The
// indirection allows the underlying map to be settable (CanSet() == true)
// where as reflect.MakeMap returns an unsettable map.
addrVal := reflect.New(vMap.Type())
reflect.Indirect(addrVal).Set(vMap)
err := d.decode(keyName, x.Interface(), reflect.Indirect(addrVal))
if err != nil {
return err
}
// the underlying map may have been completely overwritten so pull
// it indirectly out of the enclosing value.
vMap = reflect.Indirect(addrVal)
if squash {
for _, k := range vMap.MapKeys() {
valMap.SetMapIndex(k, vMap.MapIndex(k))
@ -738,7 +1015,7 @@ func (d *Decoder) decodeMapFromStruct(name string, dataVal reflect.Value, val re
return nil
}
func (d *Decoder) decodePtr(name string, data interface{}, val reflect.Value) error {
func (d *Decoder) decodePtr(name string, data interface{}, val reflect.Value) (bool, error) {
// If the input data is nil, then we want to just set the output
// pointer to be nil as well.
isNil := data == nil
@ -759,7 +1036,7 @@ func (d *Decoder) decodePtr(name string, data interface{}, val reflect.Value) er
val.Set(nilValue)
}
return nil
return true, nil
}
// Create an element of the concrete (non pointer) type and decode
@ -773,16 +1050,16 @@ func (d *Decoder) decodePtr(name string, data interface{}, val reflect.Value) er
}
if err := d.decode(name, data, reflect.Indirect(realVal)); err != nil {
return err
return false, err
}
val.Set(realVal)
} else {
if err := d.decode(name, data, reflect.Indirect(val)); err != nil {
return err
return false, err
}
}
return nil
return false, nil
}
func (d *Decoder) decodeFunc(name string, data interface{}, val reflect.Value) error {
@ -791,8 +1068,8 @@ func (d *Decoder) decodeFunc(name string, data interface{}, val reflect.Value) e
dataVal := reflect.Indirect(reflect.ValueOf(data))
if val.Type() != dataVal.Type() {
return fmt.Errorf(
"'%s' expected type '%s', got unconvertible type '%s'",
name, val.Type(), dataVal.Type())
"'%s' expected type '%s', got unconvertible type '%s', value: '%v'",
name, val.Type(), dataVal.Type(), data)
}
val.Set(dataVal)
return nil
@ -805,8 +1082,8 @@ func (d *Decoder) decodeSlice(name string, data interface{}, val reflect.Value)
valElemType := valType.Elem()
sliceType := reflect.SliceOf(valElemType)
valSlice := val
if valSlice.IsNil() || d.config.ZeroFields {
// If we have a non array/slice type then we first attempt to convert.
if dataValKind != reflect.Array && dataValKind != reflect.Slice {
if d.config.WeaklyTypedInput {
switch {
// Slice and array we use the normal logic
@ -833,18 +1110,17 @@ func (d *Decoder) decodeSlice(name string, data interface{}, val reflect.Value)
}
}
// Check input type
if dataValKind != reflect.Array && dataValKind != reflect.Slice {
return fmt.Errorf(
"'%s': source data must be an array or slice, got %s", name, dataValKind)
return fmt.Errorf(
"'%s': source data must be an array or slice, got %s", name, dataValKind)
}
}
// If the input value is empty, then don't allocate since non-nil != nil
if dataVal.Len() == 0 {
return nil
}
// If the input value is nil, then don't allocate since empty != nil
if dataValKind != reflect.Array && dataVal.IsNil() {
return nil
}
valSlice := val
if valSlice.IsNil() || d.config.ZeroFields {
// Make a new slice to hold our result, same size as the original data.
valSlice = reflect.MakeSlice(sliceType, dataVal.Len(), dataVal.Len())
}
@ -859,7 +1135,7 @@ func (d *Decoder) decodeSlice(name string, data interface{}, val reflect.Value)
}
currentField := valSlice.Index(i)
fieldName := fmt.Sprintf("%s[%d]", name, i)
fieldName := name + "[" + strconv.Itoa(i) + "]"
if err := d.decode(fieldName, currentData, currentField); err != nil {
errors = appendErrors(errors, err)
}
@ -926,7 +1202,7 @@ func (d *Decoder) decodeArray(name string, data interface{}, val reflect.Value)
currentData := dataVal.Index(i).Interface()
currentField := valArray.Index(i)
fieldName := fmt.Sprintf("%s[%d]", name, i)
fieldName := name + "[" + strconv.Itoa(i) + "]"
if err := d.decode(fieldName, currentData, currentField); err != nil {
errors = appendErrors(errors, err)
}
@ -962,13 +1238,23 @@ func (d *Decoder) decodeStruct(name string, data interface{}, val reflect.Value)
// Not the most efficient way to do this but we can optimize later if
// we want to. To convert from struct to struct we go to map first
// as an intermediary.
m := make(map[string]interface{})
mval := reflect.Indirect(reflect.ValueOf(&m))
if err := d.decodeMapFromStruct(name, dataVal, mval, mval); err != nil {
// Make a new map to hold our result
mapType := reflect.TypeOf((map[string]interface{})(nil))
mval := reflect.MakeMap(mapType)
// Creating a pointer to a map so that other methods can completely
// overwrite the map if need be (looking at you decodeMapFromMap). The
// indirection allows the underlying map to be settable (CanSet() == true)
// where as reflect.MakeMap returns an unsettable map.
addrVal := reflect.New(mval.Type())
reflect.Indirect(addrVal).Set(mval)
if err := d.decodeMapFromStruct(name, dataVal, reflect.Indirect(addrVal), mval); err != nil {
return err
}
result := d.decodeStructFromMap(name, mval, val)
result := d.decodeStructFromMap(name, reflect.Indirect(addrVal), val)
return result
default:
@ -991,6 +1277,7 @@ func (d *Decoder) decodeStructFromMap(name string, dataVal, val reflect.Value) e
dataValKeysUnused[dataValKey.Interface()] = struct{}{}
}
targetValKeysUnused := make(map[interface{}]struct{})
errors := make([]string, 0)
// This slice will keep track of all the structs we'll be decoding.
@ -1005,6 +1292,11 @@ func (d *Decoder) decodeStructFromMap(name string, dataVal, val reflect.Value) e
field reflect.StructField
val reflect.Value
}
// remainField is set to a valid field set with the "remain" tag if
// we are keeping track of remaining values.
var remainField *field
fields := []field{}
for len(structs) > 0 {
structVal := structs[0]
@ -1014,30 +1306,47 @@ func (d *Decoder) decodeStructFromMap(name string, dataVal, val reflect.Value) e
for i := 0; i < structType.NumField(); i++ {
fieldType := structType.Field(i)
fieldKind := fieldType.Type.Kind()
fieldVal := structVal.Field(i)
if fieldVal.Kind() == reflect.Ptr && fieldVal.Elem().Kind() == reflect.Struct {
// Handle embedded struct pointers as embedded structs.
fieldVal = fieldVal.Elem()
}
// If "squash" is specified in the tag, we squash the field down.
squash := false
squash := d.config.Squash && fieldVal.Kind() == reflect.Struct && fieldType.Anonymous
remain := false
// We always parse the tags cause we're looking for other tags too
tagParts := strings.Split(fieldType.Tag.Get(d.config.TagName), ",")
for _, tag := range tagParts[1:] {
if tag == "squash" {
squash = true
break
}
if tag == "remain" {
remain = true
break
}
}
if squash {
if fieldKind != reflect.Struct {
if fieldVal.Kind() != reflect.Struct {
errors = appendErrors(errors,
fmt.Errorf("%s: unsupported type for squash: %s", fieldType.Name, fieldKind))
fmt.Errorf("%s: unsupported type for squash: %s", fieldType.Name, fieldVal.Kind()))
} else {
structs = append(structs, structVal.FieldByName(fieldType.Name))
structs = append(structs, fieldVal)
}
continue
}
// Normal struct field, store it away
fields = append(fields, field{fieldType, structVal.Field(i)})
// Build our field
if remain {
remainField = &field{fieldType, fieldVal}
} else {
// Normal struct field, store it away
fields = append(fields, field{fieldType, fieldVal})
}
}
}
@ -1064,7 +1373,7 @@ func (d *Decoder) decodeStructFromMap(name string, dataVal, val reflect.Value) e
continue
}
if strings.EqualFold(mK, fieldName) {
if d.config.MatchName(mK, fieldName) {
rawMapKey = dataValKey
rawMapVal = dataVal.MapIndex(dataValKey)
break
@ -1073,14 +1382,12 @@ func (d *Decoder) decodeStructFromMap(name string, dataVal, val reflect.Value) e
if !rawMapVal.IsValid() {
// There was no matching key in the map for the value in
// the struct. Just ignore.
// the struct. Remember it for potential errors and metadata.
targetValKeysUnused[fieldName] = struct{}{}
continue
}
}
// Delete the key we're using from the unused map so we stop tracking
delete(dataValKeysUnused, rawMapKey.Interface())
if !fieldValue.IsValid() {
// This should never happen
panic("field is not valid")
@ -1092,10 +1399,13 @@ func (d *Decoder) decodeStructFromMap(name string, dataVal, val reflect.Value) e
continue
}
// Delete the key we're using from the unused map so we stop tracking
delete(dataValKeysUnused, rawMapKey.Interface())
// If the name is empty string, then we're at the root, and we
// don't dot-join the fields.
if name != "" {
fieldName = fmt.Sprintf("%s.%s", name, fieldName)
fieldName = name + "." + fieldName
}
if err := d.decode(fieldName, rawMapVal.Interface(), fieldValue); err != nil {
@ -1103,6 +1413,25 @@ func (d *Decoder) decodeStructFromMap(name string, dataVal, val reflect.Value) e
}
}
// If we have a "remain"-tagged field and we have unused keys then
// we put the unused keys directly into the remain field.
if remainField != nil && len(dataValKeysUnused) > 0 {
// Build a map of only the unused values
remain := map[interface{}]interface{}{}
for key := range dataValKeysUnused {
remain[key] = dataVal.MapIndex(reflect.ValueOf(key)).Interface()
}
// Decode it as-if we were just decoding this map onto our map.
if err := d.decodeMap(name, remain, remainField.val); err != nil {
errors = appendErrors(errors, err)
}
// Set the map to nil so we have none so that the next check will
// not error (ErrorUnused)
dataValKeysUnused = nil
}
if d.config.ErrorUnused && len(dataValKeysUnused) > 0 {
keys := make([]string, 0, len(dataValKeysUnused))
for rawKey := range dataValKeysUnused {
@ -1114,6 +1443,17 @@ func (d *Decoder) decodeStructFromMap(name string, dataVal, val reflect.Value) e
errors = appendErrors(errors, err)
}
if d.config.ErrorUnset && len(targetValKeysUnused) > 0 {
keys := make([]string, 0, len(targetValKeysUnused))
for rawKey := range targetValKeysUnused {
keys = append(keys, rawKey.(string))
}
sort.Strings(keys)
err := fmt.Errorf("'%s' has unset fields: %s", name, strings.Join(keys, ", "))
errors = appendErrors(errors, err)
}
if len(errors) > 0 {
return &Error{errors}
}
@ -1123,16 +1463,42 @@ func (d *Decoder) decodeStructFromMap(name string, dataVal, val reflect.Value) e
for rawKey := range dataValKeysUnused {
key := rawKey.(string)
if name != "" {
key = fmt.Sprintf("%s.%s", name, key)
key = name + "." + key
}
d.config.Metadata.Unused = append(d.config.Metadata.Unused, key)
}
for rawKey := range targetValKeysUnused {
key := rawKey.(string)
if name != "" {
key = name + "." + key
}
d.config.Metadata.Unset = append(d.config.Metadata.Unset, key)
}
}
return nil
}
func isEmptyValue(v reflect.Value) bool {
switch getKind(v) {
case reflect.Array, reflect.Map, reflect.Slice, reflect.String:
return v.Len() == 0
case reflect.Bool:
return !v.Bool()
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return v.Int() == 0
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
return v.Uint() == 0
case reflect.Float32, reflect.Float64:
return v.Float() == 0
case reflect.Interface, reflect.Ptr:
return v.IsNil()
}
return false
}
func getKind(val reflect.Value) reflect.Kind {
kind := val.Kind()
@ -1147,3 +1513,28 @@ func getKind(val reflect.Value) reflect.Kind {
return kind
}
}
func isStructTypeConvertibleToMap(typ reflect.Type, checkMapstructureTags bool, tagName string) bool {
for i := 0; i < typ.NumField(); i++ {
f := typ.Field(i)
if f.PkgPath == "" && !checkMapstructureTags { // check for unexported fields
return true
}
if checkMapstructureTags && f.Tag.Get(tagName) != "" { // check for mapstructure tags inside
return true
}
}
return false
}
func dereferencePtrToStructIfNeeded(v reflect.Value, tagName string) reflect.Value {
if v.Kind() != reflect.Ptr || v.Elem().Kind() != reflect.Struct {
return v
}
deref := v.Elem()
derefT := deref.Type()
if isStructTypeConvertibleToMap(derefT, true, tagName) {
return deref
}
return v
}

4
vendor/modules.txt vendored
View file

@ -283,8 +283,8 @@ github.com/kylelemons/godebug/pretty
# github.com/matttproud/golang_protobuf_extensions v1.0.4
## explicit; go 1.9
github.com/matttproud/golang_protobuf_extensions/pbutil
# github.com/mitchellh/mapstructure v1.1.2
## explicit
# github.com/mitchellh/mapstructure v1.5.0
## explicit; go 1.14
github.com/mitchellh/mapstructure
# github.com/opencontainers/go-digest v1.0.0
## explicit; go 1.13