66 lines
2.2 KiB
Go
66 lines
2.2 KiB
Go
|
package getmodules
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"path/filepath"
|
||
|
|
"runtime"
|
||
|
|
)
|
||
|
|
|
||
|
|
// fileDetector is a replacement for go-getter's own file detector which
|
||
|
|
// better meets Terraform's needs: specifically, it rejects relative filesystem
|
||
|
|
// paths with a somewhat-decent error message.
|
||
|
|
//
|
||
|
|
// This is a replacement for some historical hackery we did where we tried to
|
||
|
|
// avoid calling into go-getter altogether in this situation. This is,
|
||
|
|
// therefore, a copy of getter.FileDetector but with the "not absolute path"
|
||
|
|
// case replaced with a similar result as Terraform's old heuristic would've
|
||
|
|
// returned: a custom error type that the caller can react to in order to
|
||
|
|
// produce a hint error message if desired.
|
||
|
|
type fileDetector struct{}
|
||
|
|
|
||
|
|
func (d *fileDetector) Detect(src, pwd string) (string, bool, error) {
|
||
|
|
if len(src) == 0 {
|
||
|
|
return "", false, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
if !filepath.IsAbs(src) {
|
||
|
|
return "", true, &MaybeRelativePathErr{src}
|
||
|
|
}
|
||
|
|
|
||
|
|
return fmtFileURL(src), true, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func fmtFileURL(path string) string {
|
||
|
|
if runtime.GOOS == "windows" {
|
||
|
|
// Make sure we're using "/" on Windows. URLs are "/"-based.
|
||
|
|
path = filepath.ToSlash(path)
|
||
|
|
return fmt.Sprintf("file://%s", path)
|
||
|
|
}
|
||
|
|
|
||
|
|
// Make sure that we don't start with "/" since we add that below.
|
||
|
|
if path[0] == '/' {
|
||
|
|
path = path[1:]
|
||
|
|
}
|
||
|
|
return fmt.Sprintf("file:///%s", path)
|
||
|
|
}
|
||
|
|
|
||
|
|
// MaybeRelativePathErr is the error type returned by NormalizePackageAddress
|
||
|
|
// if the source address looks like it might be intended to be a relative
|
||
|
|
// filesystem path but without the required "./" or "../" prefix.
|
||
|
|
//
|
||
|
|
// Specifically, NormalizePackageAddress will return a pointer to this type,
|
||
|
|
// so the error type will be *MaybeRelativePathErr.
|
||
|
|
//
|
||
|
|
// It has a name starting with "Maybe" because in practice we can get here
|
||
|
|
// with any string that isn't recognized as one of the supported schemes:
|
||
|
|
// treating the address as a local filesystem path is our fallback for when
|
||
|
|
// everything else fails, but it could just as easily be a typo in an attempt
|
||
|
|
// to use one of the other schemes and thus not a filesystem path at all.
|
||
|
|
type MaybeRelativePathErr struct {
|
||
|
|
Addr string
|
||
|
|
}
|
||
|
|
|
||
|
|
func (e *MaybeRelativePathErr) Error() string {
|
||
|
|
return fmt.Sprintf("Terraform cannot detect a supported external module source type for %s", e.Addr)
|
||
|
|
}
|