seba-365 - implemented dep
Change-Id: Ia6226d50e7615935a0c8876809a687427ff88c22
diff --git a/vendor/github.com/xdg/stringprep/profile.go b/vendor/github.com/xdg/stringprep/profile.go
new file mode 100644
index 0000000..5a73be9
--- /dev/null
+++ b/vendor/github.com/xdg/stringprep/profile.go
@@ -0,0 +1,75 @@
+package stringprep
+
+import (
+ "golang.org/x/text/unicode/norm"
+)
+
+// Profile represents a stringprep profile.
+type Profile struct {
+ Mappings []Mapping
+ Normalize bool
+ Prohibits []Set
+ CheckBiDi bool
+}
+
+var errProhibited = "prohibited character"
+
+// Prepare transforms an input string to an output string following
+// the rules defined in the profile as defined by RFC-3454.
+func (p Profile) Prepare(s string) (string, error) {
+ // Optimistically, assume output will be same length as input
+ temp := make([]rune, 0, len(s))
+
+ // Apply maps
+ for _, r := range s {
+ rs, ok := p.applyMaps(r)
+ if ok {
+ temp = append(temp, rs...)
+ } else {
+ temp = append(temp, r)
+ }
+ }
+
+ // Normalize
+ var out string
+ if p.Normalize {
+ out = norm.NFKC.String(string(temp))
+ } else {
+ out = string(temp)
+ }
+
+ // Check prohibited
+ for _, r := range out {
+ if p.runeIsProhibited(r) {
+ return "", Error{Msg: errProhibited, Rune: r}
+ }
+ }
+
+ // Check BiDi allowed
+ if p.CheckBiDi {
+ if err := passesBiDiRules(out); err != nil {
+ return "", err
+ }
+ }
+
+ return out, nil
+}
+
+func (p Profile) applyMaps(r rune) ([]rune, bool) {
+ for _, m := range p.Mappings {
+ rs, ok := m.Map(r)
+ if ok {
+ return rs, true
+ }
+ }
+ return nil, false
+}
+
+func (p Profile) runeIsProhibited(r rune) bool {
+ for _, s := range p.Prohibits {
+ if s.Contains(r) {
+ return true
+ }
+ }
+ return false
+}