package input func NewOption(name, description string, opts ...func(*Option)) Option { o := Option{ Name: name, Description: description, } for _, opt := range opts { opt(&o) } return o } type Option struct { Name string Description string Short string Flag Flag Default Value Valid []func(Value) error } func (o Option) HasShort() bool { return len(o.Short) == 1 } func (o Option) HasDefault() bool { return o.Default != nil } func (o Option) IsBool() bool { return o.Flag.IsBool() } func (o Option) IsArray() bool { return o.Flag.IsArray() } func (o Option) IsRequired() bool { return o.Flag.IsRequired() } func (o Option) Validate(v Value) error { for _, valid := range o.Valid { if err := valid(v); err != nil { return ErrorOption(o.Name, err) } } return nil }