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image: precompile regexp

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Signed-off-by: Cristian Staretu <cristian.staretu@gmail.com>
This commit is contained in:
unclejack 2015-05-13 21:42:45 +03:00
parent 1b678f86b3
commit 8f57e7d2ef
1 changed files with 2 additions and 1 deletions
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3
image/image.go
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@ -19,6 +19,8 @@ import (
// For more information see: http://sourceforge.net/p/aufs/aufs3-standalone/ci/aufs3.12/tree/config.mk
const MaxImageDepth = 127
var validHex = regexp.MustCompile(`^([a-f0-9]{64})$`)
type Image struct {
ID string `json:"id"`
Parent string `json:"parent,omitempty"`
@ -266,7 +268,6 @@ func NewImgJSON(src []byte) (*Image, error) {
// Check wheather id is a valid image ID or not
func ValidateID(id string) error {
validHex := regexp.MustCompile(`^([a-f0-9]{64})$`)
if ok := validHex.MatchString(id); !ok {
return fmt.Errorf("image ID '%s' is invalid", id)
}