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