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defaults_time.go
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defaults_time.go
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// Copyright 2023 xgfone
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package defaults
import (
"errors"
"time"
)
// Pre-define some global variables about time.
var (
TimeFormat = NewValueWithValidation(time.RFC3339Nano, validateTimeFormat)
TimeFormats = NewValueWithValidation([]string{time.RFC3339Nano, "2006-01-02 15:04:05"}, validateTimeFormats)
TimeLocation = NewValueWithValidation(time.UTC, validateTimeLocation)
TimeNowFunc = NewValueWithValidation(time.Now, validateTimeNow)
)
// Now returns the current time by using TimeNow and TimeLocation.
func Now() time.Time { return TimeNowFunc.Get()().In(TimeLocation.Get()) }
func validateTimeNow(f func() time.Time) error {
if f == nil {
return errors.New("TimeNow: the time now function must not be nil")
}
return nil
}
func validateTimeFormat(s string) error {
if s == "" {
return errors.New("TimeFormat: time format layout must not be empty")
}
return nil
}
func validateTimeLocation(loc *time.Location) error {
if loc == nil {
return errors.New("TimeLocation: time location must not be nil")
}
return nil
}
func validateTimeFormats(ss []string) error {
if len(ss) == 0 {
return errors.New("TimeFormats: time format layouts must not be empty")
}
for _, s := range ss {
if s == "" {
return errors.New("TimeFormats: time format layouts must not be empty")
}
}
return nil
}