vendor dependencies with dep

vendor/github.com/go-ozzo/ozzo-validation/in.go

@@ -0,0 +1,43 @@
+// Copyright 2016 Qiang Xue. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package validation
+
+import "errors"
+
+// In returns a validation rule that checks if a value can be found in the given list of values.
+// Note that the value being checked and the possible range of values must be of the same type.
+// An empty value is considered valid. Use the Required rule to make sure a value is not empty.
+func In(values ...interface{}) *inRule {
+	return &inRule{
+		elements: values,
+		message:  "must be a valid value",
+	}
+}
+
+type inRule struct {
+	elements []interface{}
+	message  string
+}
+
+// Validate checks if the given value is valid or not.
+func (r *inRule) Validate(value interface{}) error {
+	value, isNil := Indirect(value)
+	if isNil || IsEmpty(value) {
+		return nil
+	}
+
+	for _, e := range r.elements {
+		if e == value {
+			return nil
+		}
+	}
+	return errors.New(r.message)
+}
+
+// Error sets the error message for the rule.
+func (r *inRule) Error(message string) *inRule {
+	r.message = message
+	return r
+}