153 lines
3.4 KiB
Go
153 lines
3.4 KiB
Go
package cli
|
|
|
|
import (
|
|
"flag"
|
|
"fmt"
|
|
"time"
|
|
)
|
|
|
|
// Timestamp wrap to satisfy golang's flag interface.
|
|
type Timestamp struct {
|
|
timestamp *time.Time
|
|
hasBeenSet bool
|
|
layout string
|
|
}
|
|
|
|
// Timestamp constructor
|
|
func NewTimestamp(timestamp time.Time) *Timestamp {
|
|
return &Timestamp{timestamp: ×tamp}
|
|
}
|
|
|
|
// Set the timestamp value directly
|
|
func (t *Timestamp) SetTimestamp(value time.Time) {
|
|
if !t.hasBeenSet {
|
|
t.timestamp = &value
|
|
t.hasBeenSet = true
|
|
}
|
|
}
|
|
|
|
// Set the timestamp string layout for future parsing
|
|
func (t *Timestamp) SetLayout(layout string) {
|
|
t.layout = layout
|
|
}
|
|
|
|
// Parses the string value to timestamp
|
|
func (t *Timestamp) Set(value string) error {
|
|
timestamp, err := time.Parse(t.layout, value)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
t.timestamp = ×tamp
|
|
t.hasBeenSet = true
|
|
return nil
|
|
}
|
|
|
|
// String returns a readable representation of this value (for usage defaults)
|
|
func (t *Timestamp) String() string {
|
|
return fmt.Sprintf("%#v", t.timestamp)
|
|
}
|
|
|
|
// Value returns the timestamp value stored in the flag
|
|
func (t *Timestamp) Value() *time.Time {
|
|
return t.timestamp
|
|
}
|
|
|
|
// Get returns the flag structure
|
|
func (t *Timestamp) Get() interface{} {
|
|
return *t
|
|
}
|
|
|
|
// TimestampFlag is a flag with type time
|
|
type TimestampFlag struct {
|
|
Name string
|
|
Aliases []string
|
|
Usage string
|
|
EnvVars []string
|
|
FilePath string
|
|
Required bool
|
|
Hidden bool
|
|
Layout string
|
|
Value *Timestamp
|
|
DefaultText string
|
|
HasBeenSet bool
|
|
}
|
|
|
|
// IsSet returns whether or not the flag has been set through env or file
|
|
func (f *TimestampFlag) IsSet() bool {
|
|
return f.HasBeenSet
|
|
}
|
|
|
|
// String returns a readable representation of this value
|
|
// (for usage defaults)
|
|
func (f *TimestampFlag) String() string {
|
|
return FlagStringer(f)
|
|
}
|
|
|
|
// Names returns the names of the flag
|
|
func (f *TimestampFlag) Names() []string {
|
|
return flagNames(f.Name, f.Aliases)
|
|
}
|
|
|
|
// IsRequired returns whether or not the flag is required
|
|
func (f *TimestampFlag) IsRequired() bool {
|
|
return f.Required
|
|
}
|
|
|
|
// TakesValue returns true of the flag takes a value, otherwise false
|
|
func (f *TimestampFlag) TakesValue() bool {
|
|
return true
|
|
}
|
|
|
|
// GetUsage returns the usage string for the flag
|
|
func (f *TimestampFlag) GetUsage() string {
|
|
return f.Usage
|
|
}
|
|
|
|
// GetValue returns the flags value as string representation and an empty
|
|
// string if the flag takes no value at all.
|
|
func (f *TimestampFlag) GetValue() string {
|
|
if f.Value != nil {
|
|
return f.Value.timestamp.String()
|
|
}
|
|
return ""
|
|
}
|
|
|
|
// Apply populates the flag given the flag set and environment
|
|
func (f *TimestampFlag) Apply(set *flag.FlagSet) error {
|
|
if f.Layout == "" {
|
|
return fmt.Errorf("timestamp Layout is required")
|
|
}
|
|
f.Value = &Timestamp{}
|
|
f.Value.SetLayout(f.Layout)
|
|
|
|
if val, ok := flagFromEnvOrFile(f.EnvVars, f.FilePath); ok {
|
|
if err := f.Value.Set(val); err != nil {
|
|
return fmt.Errorf("could not parse %q as timestamp value for flag %s: %s", val, f.Name, err)
|
|
}
|
|
f.HasBeenSet = true
|
|
}
|
|
|
|
for _, name := range f.Names() {
|
|
set.Var(f.Value, name, f.Usage)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Timestamp gets the timestamp from a flag name
|
|
func (c *Context) Timestamp(name string) *time.Time {
|
|
if fs := lookupFlagSet(name, c); fs != nil {
|
|
return lookupTimestamp(name, fs)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Fetches the timestamp value from the local timestampWrap
|
|
func lookupTimestamp(name string, set *flag.FlagSet) *time.Time {
|
|
f := set.Lookup(name)
|
|
if f != nil {
|
|
return (f.Value.(*Timestamp)).Value()
|
|
}
|
|
return nil
|
|
}
|