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// Copyright 2015 go-swagger maintainers
//
// 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 strfmt
import (
"encoding/json"
"fmt"
"regexp"
"strings"
"time"
)
func init() {
dt := DateTime{}
Default.Add("datetime", &dt, IsDateTime)
}
// IsDateTime returns true when the string is a valid date-time
func IsDateTime(str string) bool {
if len(str) < 4 {
return false
}
s := strings.Split(strings.ToLower(str), "t")
if len(s) < 2 || !IsDate(s[0]) {
return false
}
matches := rxDateTime.FindAllStringSubmatch(s[1], -1)
if len(matches) == 0 || len(matches[0]) == 0 {
return false
}
m := matches[0]
res := m[1] <= "23" && m[2] <= "59" && m[3] <= "59"
return res
}
const (
// RFC3339Millis represents a ISO8601 format to millis instead of to nanos
RFC3339Millis = "2006-01-02T15:04:05.000Z07:00"
// RFC3339Micro represents a ISO8601 format to micro instead of to nano
RFC3339Micro = "2006-01-02T15:04:05.000000Z07:00"
// ISO8601LocalTime represents a ISO8601 format to ISO8601 in local time (no timezone)
ISO8601LocalTime = "2006-01-02T15:04:05"
// DateTimePattern pattern to match for the date-time format from http://tools.ietf.org/html/rfc3339#section-5.6
DateTimePattern = `^([0-9]{2}):([0-9]{2}):([0-9]{2})(.[0-9]+)?(z|([+-][0-9]{2}:[0-9]{2}))$`
)
var (
dateTimeFormats = []string{RFC3339Micro, RFC3339Millis, time.RFC3339, time.RFC3339Nano, ISO8601LocalTime}
rxDateTime = regexp.MustCompile(DateTimePattern)
// MarshalFormat sets the time resolution format used for marshaling time (set to milliseconds)
MarshalFormat = RFC3339Millis
)
// ParseDateTime parses a string that represents an ISO8601 time or a unix epoch
func ParseDateTime(data string) (DateTime, error) {
if data == "" {
return NewDateTime(), nil
}
var lastError error
for _, layout := range dateTimeFormats {
dd, err := time.Parse(layout, data)
if err != nil {
lastError = err
continue
}
return DateTime(dd), nil
}
return DateTime{}, lastError
}
// DateTime is a time but it serializes to ISO8601 format with millis
// It knows how to read 3 different variations of a RFC3339 date time.
// Most APIs we encounter want either millisecond or second precision times.
// This just tries to make it worry-free.
//
// swagger:strfmt date-time
type DateTime time.Time
// NewDateTime is a representation of zero value for DateTime type
func NewDateTime() DateTime {
return DateTime(time.Unix(0, 0).UTC())
}
// String converts this time to a string
func (t DateTime) String() string {
return time.Time(t).Format(MarshalFormat)
}
// MarshalText implements the text marshaller interface
func (t DateTime) MarshalText() ([]byte, error) {
return []byte(t.String()), nil
}
// UnmarshalText implements the text unmarshaller interface
func (t *DateTime) UnmarshalText(text []byte) error {
tt, err := ParseDateTime(string(text))
if err != nil {
return err
}
*t = tt
return nil
}
// Scan scans a DateTime value from database driver type.
func (t *DateTime) Scan(raw interface{}) error {
// TODO: case int64: and case float64: ?
switch v := raw.(type) {
case []byte:
return t.UnmarshalText(v)
case string:
return t.UnmarshalText([]byte(v))
case time.Time:
*t = DateTime(v)
case nil:
*t = DateTime{}
default:
return fmt.Errorf("cannot sql.Scan() strfmt.DateTime from: %#v", v)
}
return nil
}
// MarshalJSON returns the DateTime as JSON
func (t DateTime) MarshalJSON() ([]byte, error) {
return json.Marshal(time.Time(t).Format(MarshalFormat))
}
// UnmarshalJSON sets the DateTime from JSON
func (t *DateTime) UnmarshalJSON(data []byte) error {
if string(data) == jsonNull {
return nil
}
var tstr string
if err := json.Unmarshal(data, &tstr); err != nil {
return err
}
tt, err := ParseDateTime(tstr)
if err != nil {
return err
}
*t = tt
return nil
}
// DeepCopyInto copies the receiver and writes its value into out.
func (t *DateTime) DeepCopyInto(out *DateTime) {
*out = *t
}
// DeepCopy copies the receiver into a new DateTime.
func (t *DateTime) DeepCopy() *DateTime {
if t == nil {
return nil
}
out := new(DateTime)
t.DeepCopyInto(out)
return out
}
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