67 lines
1.1 KiB
Go
67 lines
1.1 KiB
Go
package file
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import (
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nurl "net/url"
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"os"
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"path/filepath"
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"github.com/golang-migrate/migrate/v4/source"
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"github.com/golang-migrate/migrate/v4/source/iofs"
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)
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func init() {
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source.Register("file", &File{})
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}
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type File struct {
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iofs.PartialDriver
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url string
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path string
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}
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func (f *File) Open(url string) (source.Driver, error) {
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p, err := parseURL(url)
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if err != nil {
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return nil, err
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}
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nf := &File{
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url: url,
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path: p,
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}
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if err := nf.Init(os.DirFS(p), "."); err != nil {
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return nil, err
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}
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return nf, nil
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}
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func parseURL(url string) (string, error) {
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u, err := nurl.Parse(url)
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if err != nil {
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return "", err
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}
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// concat host and path to restore full path
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// host might be `.`
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p := u.Opaque
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if len(p) == 0 {
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p = u.Host + u.Path
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}
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if len(p) == 0 {
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// default to current directory if no path
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wd, err := os.Getwd()
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if err != nil {
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return "", err
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}
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p = wd
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} else if p[0:1] == "." || p[0:1] != "/" {
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// make path absolute if relative
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abs, err := filepath.Abs(p)
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if err != nil {
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return "", err
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}
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p = abs
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}
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return p, nil
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}
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