go-sample-webpage/vendor/github.com/golang-migrate/migrate/v4/source/parse.go
2021-11-08 02:25:36 +01:00

39 lines
752 B
Go

package source
import (
"fmt"
"regexp"
"strconv"
)
var (
ErrParse = fmt.Errorf("no match")
)
var (
DefaultParse = Parse
DefaultRegex = Regex
)
// Regex matches the following pattern:
// 123_name.up.ext
// 123_name.down.ext
var Regex = regexp.MustCompile(`^([0-9]+)_(.*)\.(` + string(Down) + `|` + string(Up) + `)\.(.*)$`)
// Parse returns Migration for matching Regex pattern.
func Parse(raw string) (*Migration, error) {
m := Regex.FindStringSubmatch(raw)
if len(m) == 5 {
versionUint64, err := strconv.ParseUint(m[1], 10, 64)
if err != nil {
return nil, err
}
return &Migration{
Version: uint(versionUint64),
Identifier: m[2],
Direction: Direction(m[3]),
Raw: raw,
}, nil
}
return nil, ErrParse
}