Merge pull request #4 from bbrodriges/master

much much faster uuid checks

is.go

@@ -211,22 +211,43 @@ func ByteLength(str string, min, max int) bool {
 
 // UUIDv3 check if the string is a UUID version 3.
 func UUIDv3(str string) bool {
- return rxUUID3.MatchString(str)
+ return UUID(str) && str[14] == '3'
 }
 
 // UUIDv4 check if the string is a UUID version 4.
 func UUIDv4(str string) bool {
- return rxUUID4.MatchString(str)
+ return UUID(str) &&
+ str[14] == '4' &&
+ (str[19] == '8' || str[19] == '9' || str[19] == 'a' || str[19] == 'b')
 }
 
 // UUIDv5 check if the string is a UUID version 5.
 func UUIDv5(str string) bool {
- return rxUUID5.MatchString(str)
+ return UUID(str) &&
+ str[14] == '5' &&
+ (str[19] == '8' || str[19] == '9' || str[19] == 'a' || str[19] == 'b')
 }
 
 // UUID check if the string is a UUID (version 3, 4 or 5).
 func UUID(str string) bool {
- return rxUUID.MatchString(str)
+ if len(str) != 36 {
+ return false
+ }
+
+ for i, c := range str {
+ if i == 8 || i == 13 || i == 18 || i == 23 {
+ if c != '-' {
+ return false
+ }
+ continue
+ }
+
+ if ('f' < c || c < 'a') && ('9' < c || c < '0') {
+ return false
+ }
+ }
+
+ return true
 }
 
 // CreditCard check if the string is a credit card.

patterns.go

@@ -269,10 +269,6 @@ const (
  pCreditCard string = "^(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|6(?:011|5[0-9][0-9])[0-9]{12}|3[47][0-9]{13}|3(?:0[0-5]|[68][0-9])[0-9]{11}|(?:2131|1800|35\\d{3})\\d{11})$"
  pISBN10 string = "^(?:[0-9]{9}X|[0-9]{10})$"
  pISBN13 string = "^(?:[0-9]{13})$"
- pUUID3 string = "^[0-9a-f]{8}-[0-9a-f]{4}-3[0-9a-f]{3}-[0-9a-f]{4}-[0-9a-f]{12}$"
- pUUID4 string = "^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$"
- pUUID5 string = "^[0-9a-f]{8}-[0-9a-f]{4}-5[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$"
- pUUID string = "^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$"
  // pAlpha string = "^[a-zA-Z]+$"
  // pAlphanumeric string = "^[a-zA-Z0-9]+$"
  // pNumeric string = "^[-+]?[0-9]+$"
@@ -315,10 +311,6 @@ var (
  rxCreditCard = regexp.MustCompile(pCreditCard)
  rxISBN10 = regexp.MustCompile(pISBN10)
  rxISBN13 = regexp.MustCompile(pISBN13)
- rxUUID3 = regexp.MustCompile(pUUID3)
- rxUUID4 = regexp.MustCompile(pUUID4)
- rxUUID5 = regexp.MustCompile(pUUID5)
- rxUUID = regexp.MustCompile(pUUID)
  // rxAlpha = regexp.MustCompile(Alpha)
  // rxAlphanumeric = regexp.MustCompile(Alphanumeric)
  // rxNumeric = regexp.MustCompile(Numeric)