Fix Duration JSON unmarshal

vendor/github.com/containous/flaeg/parse/parse.go

@@ -0,0 +1,301 @@
+package parse
+
+import (
+	"flag"
+	"fmt"
+	"reflect"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// Parser is an interface that allows the contents of a flag.Getter to be set.
+type Parser interface {
+	flag.Getter
+	SetValue(interface{})
+}
+
+// BoolValue bool Value type
+type BoolValue bool
+
+// Set sets bool value from the given string value.
+func (b *BoolValue) Set(s string) error {
+	v, err := strconv.ParseBool(s)
+	*b = BoolValue(v)
+	return err
+}
+
+// Get returns the bool value.
+func (b *BoolValue) Get() interface{} { return bool(*b) }
+
+func (b *BoolValue) String() string { return fmt.Sprintf("%v", *b) }
+
+// IsBoolFlag return true
+func (b *BoolValue) IsBoolFlag() bool { return true }
+
+// SetValue sets the duration from the given bool-asserted value.
+func (b *BoolValue) SetValue(val interface{}) {
+	*b = BoolValue(val.(bool))
+}
+
+// BoolFlag optional interface to indicate boolean flags that can be
+// supplied without "=value" text
+type BoolFlag interface {
+	flag.Value
+	IsBoolFlag() bool
+}
+
+// IntValue int Value
+type IntValue int
+
+// Set sets int value from the given string value.
+func (i *IntValue) Set(s string) error {
+	v, err := strconv.ParseInt(s, 0, 64)
+	*i = IntValue(v)
+	return err
+}
+
+// Get returns the int value.
+func (i *IntValue) Get() interface{} { return int(*i) }
+
+func (i *IntValue) String() string { return fmt.Sprintf("%v", *i) }
+
+// SetValue sets the IntValue from the given int-asserted value.
+func (i *IntValue) SetValue(val interface{}) {
+	*i = IntValue(val.(int))
+}
+
+// Int64Value int64 Value
+type Int64Value int64
+
+// Set sets int64 value from the given string value.
+func (i *Int64Value) Set(s string) error {
+	v, err := strconv.ParseInt(s, 0, 64)
+	*i = Int64Value(v)
+	return err
+}
+
+// Get returns the int64 value.
+func (i *Int64Value) Get() interface{} { return int64(*i) }
+
+func (i *Int64Value) String() string { return fmt.Sprintf("%v", *i) }
+
+// SetValue sets the Int64Value from the given int64-asserted value.
+func (i *Int64Value) SetValue(val interface{}) {
+	*i = Int64Value(val.(int64))
+}
+
+// UintValue uint Value
+type UintValue uint
+
+// Set sets uint value from the given string value.
+func (i *UintValue) Set(s string) error {
+	v, err := strconv.ParseUint(s, 0, 64)
+	*i = UintValue(v)
+	return err
+}
+
+// Get returns the uint value.
+func (i *UintValue) Get() interface{} { return uint(*i) }
+
+func (i *UintValue) String() string { return fmt.Sprintf("%v", *i) }
+
+// SetValue sets the UintValue from the given uint-asserted value.
+func (i *UintValue) SetValue(val interface{}) {
+	*i = UintValue(val.(uint))
+}
+
+// Uint64Value uint64 Value
+type Uint64Value uint64
+
+// Set sets uint64 value from the given string value.
+func (i *Uint64Value) Set(s string) error {
+	v, err := strconv.ParseUint(s, 0, 64)
+	*i = Uint64Value(v)
+	return err
+}
+
+// Get returns the uint64 value.
+func (i *Uint64Value) Get() interface{} { return uint64(*i) }
+
+func (i *Uint64Value) String() string { return fmt.Sprintf("%v", *i) }
+
+// SetValue sets the Uint64Value from the given uint64-asserted value.
+func (i *Uint64Value) SetValue(val interface{}) {
+	*i = Uint64Value(val.(uint64))
+}
+
+// StringValue string Value
+type StringValue string
+
+// Set sets string value from the given string value.
+func (s *StringValue) Set(val string) error {
+	*s = StringValue(val)
+	return nil
+}
+
+// Get returns the string value.
+func (s *StringValue) Get() interface{} { return string(*s) }
+
+func (s *StringValue) String() string { return string(*s) }
+
+// SetValue sets the StringValue from the given string-asserted value.
+func (s *StringValue) SetValue(val interface{}) {
+	*s = StringValue(val.(string))
+}
+
+// Float64Value float64 Value
+type Float64Value float64
+
+// Set sets float64 value from the given string value.
+func (f *Float64Value) Set(s string) error {
+	v, err := strconv.ParseFloat(s, 64)
+	*f = Float64Value(v)
+	return err
+}
+
+// Get returns the float64 value.
+func (f *Float64Value) Get() interface{} { return float64(*f) }
+
+func (f *Float64Value) String() string { return fmt.Sprintf("%v", *f) }
+
+// SetValue sets the Float64Value from the given float64-asserted value.
+func (f *Float64Value) SetValue(val interface{}) {
+	*f = Float64Value(val.(float64))
+}
+
+// Duration is a custom type suitable for parsing duration values.
+// It supports `time.ParseDuration`-compatible values and suffix-less digits; in
+// the latter case, seconds are assumed.
+type Duration time.Duration
+
+// Set sets the duration from the given string value.
+func (d *Duration) Set(s string) error {
+	if v, err := strconv.Atoi(s); err == nil {
+		*d = Duration(time.Duration(v) * time.Second)
+		return nil
+	}
+
+	v, err := time.ParseDuration(s)
+	*d = Duration(v)
+	return err
+}
+
+// Get returns the duration value.
+func (d *Duration) Get() interface{} { return time.Duration(*d) }
+
+// String returns a string representation of the duration value.
+func (d *Duration) String() string { return (*time.Duration)(d).String() }
+
+// SetValue sets the duration from the given Duration-asserted value.
+func (d *Duration) SetValue(val interface{}) {
+	*d = val.(Duration)
+}
+
+// MarshalText serialize the given duration value into a text.
+func (d *Duration) MarshalText() ([]byte, error) {
+	return []byte(d.String()), nil
+}
+
+// UnmarshalText deserializes the given text into a duration value.
+// It is meant to support TOML decoding of durations.
+func (d *Duration) UnmarshalText(text []byte) error {
+	return d.Set(string(text))
+}
+
+// UnmarshalJSON deserializes the given text into a duration value.
+func (d *Duration) UnmarshalJSON(text []byte) error {
+	if v, err := strconv.Atoi(string(text)); err == nil {
+		*d = Duration(time.Duration(v))
+		return nil
+	}
+
+	v, err := time.ParseDuration(string(text))
+	*d = Duration(v)
+	return err
+}
+
+// TimeValue time.Time Value
+type TimeValue time.Time
+
+// Set sets time.Time value from the given string value.
+func (t *TimeValue) Set(s string) error {
+	v, err := time.Parse(time.RFC3339, s)
+	*t = TimeValue(v)
+	return err
+}
+
+// Get returns the time.Time value.
+func (t *TimeValue) Get() interface{} { return time.Time(*t) }
+
+func (t *TimeValue) String() string { return (*time.Time)(t).String() }
+
+// SetValue sets the TimeValue from the given time.Time-asserted value.
+func (t *TimeValue) SetValue(val interface{}) {
+	*t = TimeValue(val.(time.Time))
+}
+
+// SliceStrings parse slice of strings
+type SliceStrings []string
+
+// Set adds strings elem into the the parser.
+// It splits str on , and ;
+func (s *SliceStrings) Set(str string) error {
+	fargs := func(c rune) bool {
+		return c == ',' || c == ';'
+	}
+	// get function
+	slice := strings.FieldsFunc(str, fargs)
+	*s = append(*s, slice...)
+	return nil
+}
+
+// Get []string
+func (s *SliceStrings) Get() interface{} { return []string(*s) }
+
+// String return slice in a string
+func (s *SliceStrings) String() string { return fmt.Sprintf("%v", *s) }
+
+// SetValue sets []string into the parser
+func (s *SliceStrings) SetValue(val interface{}) {
+	*s = SliceStrings(val.([]string))
+}
+
+// LoadParsers loads default parsers and custom parsers given as parameter.
+// Return a map [reflect.Type]parsers
+// bool, int, int64, uint, uint64, float64,
+func LoadParsers(customParsers map[reflect.Type]Parser) (map[reflect.Type]Parser, error) {
+	parsers := map[reflect.Type]Parser{}
+
+	var boolParser BoolValue
+	parsers[reflect.TypeOf(true)] = &boolParser
+
+	var intParser IntValue
+	parsers[reflect.TypeOf(1)] = &intParser
+
+	var int64Parser Int64Value
+	parsers[reflect.TypeOf(int64(1))] = &int64Parser
+
+	var uintParser UintValue
+	parsers[reflect.TypeOf(uint(1))] = &uintParser
+
+	var uint64Parser Uint64Value
+	parsers[reflect.TypeOf(uint64(1))] = &uint64Parser
+
+	var stringParser StringValue
+	parsers[reflect.TypeOf("")] = &stringParser
+
+	var float64Parser Float64Value
+	parsers[reflect.TypeOf(float64(1.5))] = &float64Parser
+
+	var durationParser Duration
+	parsers[reflect.TypeOf(Duration(time.Second))] = &durationParser
+
+	var timeParser TimeValue
+	parsers[reflect.TypeOf(time.Now())] = &timeParser
+
+	for rType, parser := range customParsers {
+		parsers[rType] = parser
+	}
+	return parsers, nil
+}