vfs/version.go
2015-05-10 14:14:15 +09:00

56 lines
1.7 KiB
Go

/*
* Copyright (c) 2015 Alex Yatskov <alex@foosoft.net>
* Author: Alex Yatskov <alex@foosoft.net>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package main
import (
"fmt"
"regexp"
"strconv"
"time"
)
type Version struct {
base string
parent *Version
timestamp time.Time
}
func NewVersion(base string, parent *Version) (*Version, error) {
re, err := regexp.Compile(`/vfs_([0-9a-f])$`)
if err != nil {
return nil, err
}
matches := re.FindStringSubmatch(base)
if len(matches) < 2 {
return nil, fmt.Errorf("invalid version identifier for %s", base)
}
timeval, err := strconv.ParseInt(matches[1], 16, 64)
if err != nil {
return nil, err
}
return &Version{base: base, parent: parent, timestamp: time.Unix(timeval, 0)}, nil
}