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digest: Minor refactoring

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Docker-DCO-1.1-Signed-off-by: Josh Hawn <josh.hawn@docker.com> (github: jlhawn)
This commit is contained in:
Josh Hawn 2015-03-10 14:40:58 -07:00
parent cbdc3621cf
commit 87959abe8f
9 changed files with 54 additions and 26 deletions
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8
digest/tarsum.go
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@ -27,12 +27,10 @@ type TarSumInfo struct {
// InvalidTarSumError provides informations about a TarSum that cannot be parsed
// by ParseTarSum.
type InvalidTarSumError struct {
TarSum string
}
type InvalidTarSumError string
func (e InvalidTarSumError) Error() string {
return fmt.Sprintf("invalid tarsum: %q", e.TarSum)
return fmt.Sprintf("invalid tarsum: %q", string(e))
}
// ParseTarSum parses a tarsum string into its components of interest. For
@ -52,7 +50,7 @@ func ParseTarSum(tarSum string) (tsi TarSumInfo, err error) {
components := TarsumRegexpCapturing.FindStringSubmatch(tarSum)
if len(components) != 1+TarsumRegexpCapturing.NumSubexp() {
return TarSumInfo{}, InvalidTarSumError{TarSum: tarSum}
return TarSumInfo{}, InvalidTarSumError(tarSum)
}
return TarSumInfo{