traefik/vendor/github.com/containous/flaeg/parsers.go
2017-04-03 18:36:23 +02:00

221 lines
5.1 KiB
Go

package flaeg
import (
"flag"
"fmt"
"strconv"
"strings"
"time"
)
//TODO : add parsers on all types in https://golang.org/pkg/builtin/
// Parser is an interface that allows the contents of a flag.Getter to be set.
type Parser interface {
flag.Getter
SetValue(interface{})
}
// -- bool Value
type boolValue bool
func (b *boolValue) Set(s string) error {
v, err := strconv.ParseBool(s)
*b = boolValue(v)
return err
}
func (b *boolValue) Get() interface{} { return bool(*b) }
func (b *boolValue) String() string { return fmt.Sprintf("%v", *b) }
func (b *boolValue) IsBoolFlag() bool { return true }
func (b *boolValue) SetValue(val interface{}) {
*b = boolValue(val.(bool))
}
// optional interface to indicate boolean flags that can be
// supplied without "=value" text
type boolFlag interface {
flag.Value
IsBoolFlag() bool
}
// -- int Value
type intValue int
func (i *intValue) Set(s string) error {
v, err := strconv.ParseInt(s, 0, 64)
*i = intValue(v)
return err
}
func (i *intValue) Get() interface{} { return int(*i) }
func (i *intValue) String() string { return fmt.Sprintf("%v", *i) }
func (i *intValue) SetValue(val interface{}) {
*i = intValue(val.(int))
}
// -- int64 Value
type int64Value int64
func (i *int64Value) Set(s string) error {
v, err := strconv.ParseInt(s, 0, 64)
*i = int64Value(v)
return err
}
func (i *int64Value) Get() interface{} { return int64(*i) }
func (i *int64Value) String() string { return fmt.Sprintf("%v", *i) }
func (i *int64Value) SetValue(val interface{}) {
*i = int64Value(val.(int64))
}
// -- uint Value
type uintValue uint
func (i *uintValue) Set(s string) error {
v, err := strconv.ParseUint(s, 0, 64)
*i = uintValue(v)
return err
}
func (i *uintValue) Get() interface{} { return uint(*i) }
func (i *uintValue) String() string { return fmt.Sprintf("%v", *i) }
func (i *uintValue) SetValue(val interface{}) {
*i = uintValue(val.(uint))
}
// -- uint64 Value
type uint64Value uint64
func (i *uint64Value) Set(s string) error {
v, err := strconv.ParseUint(s, 0, 64)
*i = uint64Value(v)
return err
}
func (i *uint64Value) Get() interface{} { return uint64(*i) }
func (i *uint64Value) String() string { return fmt.Sprintf("%v", *i) }
func (i *uint64Value) SetValue(val interface{}) {
*i = uint64Value(val.(uint64))
}
// -- string Value
type stringValue string
func (s *stringValue) Set(val string) error {
*s = stringValue(val)
return nil
}
func (s *stringValue) Get() interface{} { return string(*s) }
func (s *stringValue) String() string { return fmt.Sprintf("%s", *s) }
func (s *stringValue) SetValue(val interface{}) {
*s = stringValue(val.(string))
}
// -- float64 Value
type float64Value float64
func (f *float64Value) Set(s string) error {
v, err := strconv.ParseFloat(s, 64)
*f = float64Value(v)
return err
}
func (f *float64Value) Get() interface{} { return float64(*f) }
func (f *float64Value) String() string { return fmt.Sprintf("%v", *f) }
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 = Duration(val.(Duration))
}
// 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))
}
// -- time.Time Value
type timeValue time.Time
func (t *timeValue) Set(s string) error {
v, err := time.Parse(time.RFC3339, s)
*t = timeValue(v)
return err
}
func (t *timeValue) Get() interface{} { return time.Time(*t) }
func (t *timeValue) String() string { return (*time.Time)(t).String() }
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))
}