Bump github.com/mitchellh/mapstructure

vendor/github.com/mitchellh/mapstructure/.travis.yml

@@ -0,0 +1,7 @@
+language: go 
+
+go: 
+  - 1.4
+  
+script:
+  - go test 

vendor/github.com/mitchellh/mapstructure/decode_hooks.go

@@ -1,11 +1,59 @@
 package mapstructure
 
 import (
+	"errors"
 	"reflect"
 	"strconv"
 	"strings"
+	"time"
 )
 
+// typedDecodeHook takes a raw DecodeHookFunc (an interface{}) and turns
+// it into the proper DecodeHookFunc type, such as DecodeHookFuncType.
+func typedDecodeHook(h DecodeHookFunc) DecodeHookFunc {
+	// Create variables here so we can reference them with the reflect pkg
+	var f1 DecodeHookFuncType
+	var f2 DecodeHookFuncKind
+
+	// Fill in the variables into this interface and the rest is done
+	// automatically using the reflect package.
+	potential := []interface{}{f1, f2}
+
+	v := reflect.ValueOf(h)
+	vt := v.Type()
+	for _, raw := range potential {
+		pt := reflect.ValueOf(raw).Type()
+		if vt.ConvertibleTo(pt) {
+			return v.Convert(pt).Interface()
+		}
+	}
+
+	return nil
+}
+
+// DecodeHookExec executes the given decode hook. This should be used
+// since it'll naturally degrade to the older backwards compatible DecodeHookFunc
+// that took reflect.Kind instead of reflect.Type.
+func DecodeHookExec(
+	raw DecodeHookFunc,
+	from reflect.Type, to reflect.Type,
+	data interface{}) (interface{}, error) {
+	// Build our arguments that reflect expects
+	argVals := make([]reflect.Value, 3)
+	argVals[0] = reflect.ValueOf(from)
+	argVals[1] = reflect.ValueOf(to)
+	argVals[2] = reflect.ValueOf(data)
+
+	switch f := typedDecodeHook(raw).(type) {
+	case DecodeHookFuncType:
+		return f(from, to, data)
+	case DecodeHookFuncKind:
+		return f(from.Kind(), to.Kind(), data)
+	default:
+		return nil, errors.New("invalid decode hook signature")
+	}
+}
+
 // ComposeDecodeHookFunc creates a single DecodeHookFunc that
 // automatically composes multiple DecodeHookFuncs.
 //
@@ -13,18 +61,21 @@ import (
 // previous transformation.
 func ComposeDecodeHookFunc(fs ...DecodeHookFunc) DecodeHookFunc {
 	return func(
-		f reflect.Kind,
-		t reflect.Kind,
+		f reflect.Type,
+		t reflect.Type,
 		data interface{}) (interface{}, error) {
 		var err error
 		for _, f1 := range fs {
-			data, err = f1(f, t, data)
+			data, err = DecodeHookExec(f1, f, t, data)
 			if err != nil {
 				return nil, err
 			}
 
 			// Modify the from kind to be correct with the new data
-			f = getKind(reflect.ValueOf(data))
+			f = nil
+			if val := reflect.ValueOf(data); val.IsValid() {
+				f = val.Type()
+			}
 		}
 
 		return data, nil
@@ -51,6 +102,25 @@ func StringToSliceHookFunc(sep string) DecodeHookFunc {
 	}
 }
 
+// StringToTimeDurationHookFunc returns a DecodeHookFunc that converts
+// strings to time.Duration.
+func StringToTimeDurationHookFunc() DecodeHookFunc {
+	return func(
+		f reflect.Type,
+		t reflect.Type,
+		data interface{}) (interface{}, error) {
+		if f.Kind() != reflect.String {
+			return data, nil
+		}
+		if t != reflect.TypeOf(time.Duration(5)) {
+			return data, nil
+		}
+
+		// Convert it by parsing
+		return time.ParseDuration(data.(string))
+	}
+}
+
 func WeaklyTypedHook(
 	f reflect.Kind,
 	t reflect.Kind,

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

@@ -1,7 +1,9 @@
 package mapstructure
 
 import (
+	"errors"
 	"fmt"
+	"sort"
 	"strings"
 )
 
@@ -17,11 +19,27 @@ func (e *Error) Error() string {
 		points[i] = fmt.Sprintf("* %s", err)
 	}
 
+	sort.Strings(points)
 	return fmt.Sprintf(
 		"%d error(s) decoding:\n\n%s",
 		len(e.Errors), strings.Join(points, "\n"))
 }
 
+// WrappedErrors implements the errwrap.Wrapper interface to make this
+// return value more useful with the errwrap and go-multierror libraries.
+func (e *Error) WrappedErrors() []error {
+	if e == nil {
+		return nil
+	}
+
+	result := make([]error, len(e.Errors))
+	for i, e := range e.Errors {
+		result[i] = errors.New(e)
+	}
+
+	return result
+}
+
 func appendErrors(errors []string, err error) []string {
 	switch e := err.(type) {
 	case *Error:

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

@@ -1,5 +1,5 @@
 // The mapstructure package exposes functionality to convert an
-// abitrary map[string]interface{} into a native Go structure.
+// arbitrary 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
@@ -8,6 +8,7 @@
 package mapstructure
 
 import (
+	"encoding/json"
 	"errors"
 	"fmt"
 	"reflect"
@@ -19,10 +20,20 @@ import (
 // DecodeHookFunc is the callback function that can be used for
 // data transformations. See "DecodeHook" in the DecoderConfig
 // struct.
-type DecodeHookFunc func(
-	from reflect.Kind,
-	to reflect.Kind,
-	data interface{}) (interface{}, error)
+//
+// 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 reason DecodeHookFunc is multi-typed is for backwards compatibility:
+// we started with Kinds and then realized Types were the better solution,
+// but have a promise to not break backwards compat so we now support
+// both.
+type DecodeHookFunc interface{}
+
+type DecodeHookFuncType func(reflect.Type, reflect.Type, interface{}) (interface{}, error)
+type DecodeHookFuncKind func(reflect.Kind, reflect.Kind, interface{}) (interface{}, error)
 
 // DecoderConfig is the configuration that is used to create a new decoder
 // and allows customization of various aspects of decoding.
@@ -40,6 +51,11 @@ type DecoderConfig struct {
 	// (extra keys).
 	ErrorUnused 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.
+	ZeroFields bool
+
 	// If WeaklyTypedInput is true, the decoder will make the following
 	// "weak" conversions:
 	//
@@ -51,6 +67,11 @@ type DecoderConfig struct {
 	//   - string to bool (accepts: 1, t, T, TRUE, true, True, 0, f, F,
 	//     FALSE, false, False. Anything else is an error)
 	//   - empty array = empty map and vice versa
+	//   - negative numbers to overflowed uint values (base 10)
+	//   - slice of maps to a merged map
+	//   - single values are converted to slices if required. Each
+	//     element is weakly decoded. For example: "4" can become []int{4}
+	//     if the target type is an int slice.
 	//
 	WeaklyTypedInput bool
 
@@ -180,9 +201,11 @@ func (d *Decoder) decode(name string, data interface{}, val reflect.Value) error
 	if d.config.DecodeHook != nil {
 		// We have a DecodeHook, so let's pre-process the data.
 		var err error
-		data, err = d.config.DecodeHook(getKind(dataVal), getKind(val), data)
+		data, err = DecodeHookExec(
+			d.config.DecodeHook,
+			dataVal.Type(), val.Type(), data)
 		if err != nil {
-			return err
+			return fmt.Errorf("error decoding '%s': %s", name, err)
 		}
 	}
 
@@ -209,6 +232,8 @@ func (d *Decoder) decode(name string, data interface{}, val reflect.Value) error
 		err = d.decodePtr(name, data, val)
 	case reflect.Slice:
 		err = d.decodeSlice(name, data, val)
+	case reflect.Func:
+		err = d.decodeFunc(name, data, val)
 	default:
 		// If we reached this point then we weren't able to decode it
 		return fmt.Errorf("%s: unsupported type: %s", name, dataKind)
@@ -227,6 +252,10 @@ func (d *Decoder) decode(name string, data interface{}, val reflect.Value) error
 // value to "data" of that type.
 func (d *Decoder) decodeBasic(name string, data interface{}, val reflect.Value) error {
 	dataVal := reflect.ValueOf(data)
+	if !dataVal.IsValid() {
+		dataVal = reflect.Zero(val.Type())
+	}
+
 	dataValType := dataVal.Type()
 	if !dataValType.AssignableTo(val.Type()) {
 		return fmt.Errorf(
@@ -283,6 +312,7 @@ func (d *Decoder) decodeString(name string, data interface{}, val reflect.Value)
 func (d *Decoder) decodeInt(name string, data interface{}, val reflect.Value) error {
 	dataVal := reflect.ValueOf(data)
 	dataKind := getKind(dataVal)
+	dataType := dataVal.Type()
 
 	switch {
 	case dataKind == reflect.Int:
@@ -304,6 +334,14 @@ func (d *Decoder) decodeInt(name string, data interface{}, val reflect.Value) er
 		} else {
 			return fmt.Errorf("cannot parse '%s' as int: %s", name, err)
 		}
+	case dataType.PkgPath() == "encoding/json" && dataType.Name() == "Number":
+		jn := data.(json.Number)
+		i, err := jn.Int64()
+		if err != nil {
+			return fmt.Errorf(
+				"error decoding json.Number into %s: %s", name, err)
+		}
+		val.SetInt(i)
 	default:
 		return fmt.Errorf(
 			"'%s' expected type '%s', got unconvertible type '%s'",
@@ -319,11 +357,21 @@ func (d *Decoder) decodeUint(name string, data interface{}, val reflect.Value) e
 
 	switch {
 	case dataKind == reflect.Int:
-		val.SetUint(uint64(dataVal.Int()))
+		i := dataVal.Int()
+		if i < 0 && !d.config.WeaklyTypedInput {
+			return fmt.Errorf("cannot parse '%s', %d overflows uint",
+				name, i)
+		}
+		val.SetUint(uint64(i))
 	case dataKind == reflect.Uint:
 		val.SetUint(dataVal.Uint())
 	case dataKind == reflect.Float32:
-		val.SetUint(uint64(dataVal.Float()))
+		f := dataVal.Float()
+		if f < 0 && !d.config.WeaklyTypedInput {
+			return fmt.Errorf("cannot parse '%s', %f overflows uint",
+				name, f)
+		}
+		val.SetUint(uint64(f))
 	case dataKind == reflect.Bool && d.config.WeaklyTypedInput:
 		if dataVal.Bool() {
 			val.SetUint(1)
@@ -380,6 +428,7 @@ func (d *Decoder) decodeBool(name string, data interface{}, val reflect.Value) e
 func (d *Decoder) decodeFloat(name string, data interface{}, val reflect.Value) error {
 	dataVal := reflect.ValueOf(data)
 	dataKind := getKind(dataVal)
+	dataType := dataVal.Type()
 
 	switch {
 	case dataKind == reflect.Int:
@@ -401,6 +450,14 @@ func (d *Decoder) decodeFloat(name string, data interface{}, val reflect.Value)
 		} else {
 			return fmt.Errorf("cannot parse '%s' as float: %s", name, err)
 		}
+	case dataType.PkgPath() == "encoding/json" && dataType.Name() == "Number":
+		jn := data.(json.Number)
+		i, err := jn.Float64()
+		if err != nil {
+			return fmt.Errorf(
+				"error decoding json.Number into %s: %s", name, err)
+		}
+		val.SetFloat(i)
 	default:
 		return fmt.Errorf(
 			"'%s' expected type '%s', got unconvertible type '%s'",
@@ -415,22 +472,43 @@ func (d *Decoder) decodeMap(name string, data interface{}, val reflect.Value) er
 	valKeyType := valType.Key()
 	valElemType := valType.Elem()
 
-	// Make a new map to hold our result
-	mapType := reflect.MapOf(valKeyType, valElemType)
-	valMap := reflect.MakeMap(mapType)
+	// By default we overwrite keys in the current map
+	valMap := val
+
+	// If the map is nil or we're purposely zeroing fields, make a new map
+	if valMap.IsNil() || d.config.ZeroFields {
+		// Make a new map to hold our result
+		mapType := reflect.MapOf(valKeyType, valElemType)
+		valMap = reflect.MakeMap(mapType)
+	}
 
 	// Check input type
 	dataVal := reflect.Indirect(reflect.ValueOf(data))
 	if dataVal.Kind() != reflect.Map {
-		// Accept empty array/slice instead of an empty map in weakly typed mode
-		if d.config.WeaklyTypedInput &&
-			(dataVal.Kind() == reflect.Slice || dataVal.Kind() == reflect.Array) &&
-			dataVal.Len() == 0 {
-			val.Set(valMap)
-			return nil
-		} else {
-			return fmt.Errorf("'%s' expected a map, got '%s'", name, dataVal.Kind())
+		// In weak mode, we accept a slice of maps as an input...
+		if d.config.WeaklyTypedInput {
+			switch dataVal.Kind() {
+			case reflect.Array, reflect.Slice:
+				// Special case for BC reasons (covered by tests)
+				if dataVal.Len() == 0 {
+					val.Set(valMap)
+					return nil
+				}
+
+				for i := 0; i < dataVal.Len(); i++ {
+					err := d.decode(
+						fmt.Sprintf("%s[%d]", name, i),
+						dataVal.Index(i).Interface(), val)
+					if err != nil {
+						return err
+					}
+				}
+
+				return nil
+			}
 		}
+
+		return fmt.Errorf("'%s' expected a map, got '%s'", name, dataVal.Kind())
 	}
 
 	// Accumulate errors
@@ -473,7 +551,12 @@ func (d *Decoder) decodePtr(name string, data interface{}, val reflect.Value) er
 	// into that. Then set the value of the pointer to this type.
 	valType := val.Type()
 	valElemType := valType.Elem()
-	realVal := reflect.New(valElemType)
+
+	realVal := val
+	if realVal.IsNil() || d.config.ZeroFields {
+		realVal = reflect.New(valElemType)
+	}
+
 	if err := d.decode(name, data, reflect.Indirect(realVal)); err != nil {
 		return err
 	}
@@ -482,6 +565,19 @@ func (d *Decoder) decodePtr(name string, data interface{}, val reflect.Value) er
 	return nil
 }
 
+func (d *Decoder) decodeFunc(name string, data interface{}, val reflect.Value) error {
+	// Create an element of the concrete (non pointer) type and decode
+	// into that. Then set the value of the pointer to this type.
+	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())
+	}
+	val.Set(dataVal)
+	return nil
+}
+
 func (d *Decoder) decodeSlice(name string, data interface{}, val reflect.Value) error {
 	dataVal := reflect.Indirect(reflect.ValueOf(data))
 	dataValKind := dataVal.Kind()
@@ -489,26 +585,44 @@ func (d *Decoder) decodeSlice(name string, data interface{}, val reflect.Value)
 	valElemType := valType.Elem()
 	sliceType := reflect.SliceOf(valElemType)
 
-	// Check input type
-	if dataValKind != reflect.Array && dataValKind != reflect.Slice {
-		// Accept empty map instead of array/slice in weakly typed mode
-		if d.config.WeaklyTypedInput && dataVal.Kind() == reflect.Map && dataVal.Len() == 0 {
-			val.Set(reflect.MakeSlice(sliceType, 0, 0))
-			return nil
-		} else {
+	valSlice := val
+	if valSlice.IsNil() || d.config.ZeroFields {
+		// Check input type
+		if dataValKind != reflect.Array && dataValKind != reflect.Slice {
+			if d.config.WeaklyTypedInput {
+				switch {
+				// Empty maps turn into empty slices
+				case dataValKind == reflect.Map:
+					if dataVal.Len() == 0 {
+						val.Set(reflect.MakeSlice(sliceType, 0, 0))
+						return nil
+					}
+
+				// All other types we try to convert to the slice type
+				// and "lift" it into it. i.e. a string becomes a string slice.
+				default:
+					// Just re-try this function with data as a slice.
+					return d.decodeSlice(name, []interface{}{data}, val)
+				}
+			}
+
 			return fmt.Errorf(
 				"'%s': source data must be an array or slice, got %s", name, dataValKind)
-		}
-	}
 
-	// Make a new slice to hold our result, same size as the original data.
-	valSlice := reflect.MakeSlice(sliceType, dataVal.Len(), dataVal.Len())
+		}
+
+		// Make a new slice to hold our result, same size as the original data.
+		valSlice = reflect.MakeSlice(sliceType, dataVal.Len(), dataVal.Len())
+	}
 
 	// Accumulate any errors
 	errors := make([]string, 0)
 
 	for i := 0; i < dataVal.Len(); i++ {
 		currentData := dataVal.Index(i).Interface()
+		for valSlice.Len() <= i {
+			valSlice = reflect.Append(valSlice, reflect.Zero(valElemType))
+		}
 		currentField := valSlice.Index(i)
 
 		fieldName := fmt.Sprintf("%s[%d]", name, i)
@@ -530,6 +644,14 @@ func (d *Decoder) decodeSlice(name string, data interface{}, val reflect.Value)
 
 func (d *Decoder) decodeStruct(name string, data interface{}, val reflect.Value) error {
 	dataVal := reflect.Indirect(reflect.ValueOf(data))
+
+	// If the type of the value to write to and the data match directly,
+	// then we just set it directly instead of recursing into the structure.
+	if dataVal.Type() == val.Type() {
+		val.Set(dataVal)
+		return nil
+	}
+
 	dataValKind := dataVal.Kind()
 	if dataValKind != reflect.Map {
 		return fmt.Errorf("'%s' expected a map, got '%s'", name, dataValKind)
@@ -565,32 +687,29 @@ func (d *Decoder) decodeStruct(name string, data interface{}, val reflect.Value)
 		structs = structs[1:]
 
 		structType := structVal.Type()
+
 		for i := 0; i < structType.NumField(); i++ {
 			fieldType := structType.Field(i)
+			fieldKind := fieldType.Type.Kind()
 
-			if fieldType.Anonymous {
-				fieldKind := fieldType.Type.Kind()
+			// If "squash" is specified in the tag, we squash the field down.
+			squash := false
+			tagParts := strings.Split(fieldType.Tag.Get(d.config.TagName), ",")
+			for _, tag := range tagParts[1:] {
+				if tag == "squash" {
+					squash = true
+					break
+				}
+			}
+
+			if squash {
 				if fieldKind != reflect.Struct {
 					errors = appendErrors(errors,
-						fmt.Errorf("%s: unsupported type: %s", fieldType.Name, fieldKind))
-					continue
-				}
-
-				// We have an embedded field. We "squash" the fields down
-				// if specified in the tag.
-				squash := false
-				tagParts := strings.Split(fieldType.Tag.Get(d.config.TagName), ",")
-				for _, tag := range tagParts[1:] {
-					if tag == "squash" {
-						squash = true
-						break
-					}
-				}
-
-				if squash {
+						fmt.Errorf("%s: unsupported type for squash: %s", fieldType.Name, fieldKind))
+				} else {
 					structs = append(structs, val.FieldByName(fieldType.Name))
-					continue
 				}
+				continue
 			}
 
 			// Normal struct field, store it away
@@ -612,7 +731,7 @@ func (d *Decoder) decodeStruct(name string, data interface{}, val reflect.Value)
 		if !rawMapVal.IsValid() {
 			// Do a slower search by iterating over each key and
 			// doing case-insensitive search.
-			for dataValKey, _ := range dataValKeys {
+			for dataValKey := range dataValKeys {
 				mK, ok := dataValKey.Interface().(string)
 				if !ok {
 					// Not a string key
@@ -660,7 +779,7 @@ func (d *Decoder) decodeStruct(name string, data interface{}, val reflect.Value)
 
 	if d.config.ErrorUnused && len(dataValKeysUnused) > 0 {
 		keys := make([]string, 0, len(dataValKeysUnused))
-		for rawKey, _ := range dataValKeysUnused {
+		for rawKey := range dataValKeysUnused {
 			keys = append(keys, rawKey.(string))
 		}
 		sort.Strings(keys)
@@ -675,7 +794,7 @@ func (d *Decoder) decodeStruct(name string, data interface{}, val reflect.Value)
 
 	// Add the unused keys to the list of unused keys if we're tracking metadata
 	if d.config.Metadata != nil {
-		for rawKey, _ := range dataValKeysUnused {
+		for rawKey := range dataValKeysUnused {
 			key := rawKey.(string)
 			if name != "" {
 				key = fmt.Sprintf("%s.%s", name, key)