ana-ledger/cmd/cli/flag.go

69 lines
1.4 KiB
Go

package cli
import (
"fmt"
"os"
"strings"
"time"
)
type FlagStringArray []string
func (array *FlagStringArray) String() string {
return strings.Join(*array, ", ")
}
func (array *FlagStringArray) Set(s string) error {
*array = append(*array, s)
return nil
}
type FileList FlagStringArray
func (fileList FileList) Strings() []string {
return ([]string)(fileList)
}
func (fileList *FileList) String() string {
return (*FlagStringArray)(fileList).String()
}
func (fileList *FileList) Set(s string) error {
if _, err := os.Stat(s); os.IsNotExist(err) {
return fmt.Errorf("file does not exist: %s", s)
}
return (*FlagStringArray)(fileList).Set(s)
}
type Period struct {
Start time.Time
Stop time.Time
}
func (period Period) Empty() bool {
return period.Stop.Sub(period.Start) == 0
}
func (period *Period) String() string {
return fmt.Sprintf("%s..%s", period.Start, period.Stop)
}
func (period *Period) Set(s string) error {
if result, err := time.Parse("2006", s); err == nil {
period.Start = result
period.Stop = result.AddDate(1, 0, 0).Add(-1 * time.Minute)
return nil
}
if result, err := time.Parse("2006-01", s); err == nil {
period.Start = result
period.Stop = result.AddDate(0, 1, 0).Add(-1 * time.Minute)
return nil
}
if result, err := time.Parse("2006-01-02", s); err == nil {
period.Start = result
period.Stop = result.AddDate(0, 0, 1).Add(-1 * time.Minute)
return nil
}
return fmt.Errorf("unimplemented format: %s", s)
}