Chore: enforce feature naming convention (#48053)

* enforce feature naming convention

* fix link

* add comment

* fix lint

* move the feature name check test to toggles_gen_test

pkg/services/featuremgmt/strcase/camel.go

@@ -0,0 +1,92 @@
+// https://github.com/iancoleman/strcase/blob/master/camel.go
+// https://github.com/iancoleman/strcase/blob/master/acronyms.go
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2015 Ian Coleman
+ * Copyright (c) 2018 Ma_124, <github.com/Ma124>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, Subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or Substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package strcase
+
+import (
+	"strings"
+)
+
+var uppercaseAcronym = map[string]string{
+	"ID": "id",
+}
+
+// ConfigureAcronym allows you to add additional words which will be considered acronyms
+func ConfigureAcronym(key, val string) {
+	uppercaseAcronym[key] = val
+}
+
+// Converts a string to CamelCase
+func toCamelInitCase(s string, initCase bool) string {
+	s = strings.TrimSpace(s)
+	if s == "" {
+		return s
+	}
+	if a, ok := uppercaseAcronym[s]; ok {
+		s = a
+	}
+
+	n := strings.Builder{}
+	n.Grow(len(s))
+	capNext := initCase
+	for i, v := range []byte(s) {
+		vIsCap := v >= 'A' && v <= 'Z'
+		vIsLow := v >= 'a' && v <= 'z'
+		if capNext {
+			if vIsLow {
+				v += 'A'
+				v -= 'a'
+			}
+		} else if i == 0 {
+			if vIsCap {
+				v += 'a'
+				v -= 'A'
+			}
+		}
+		if vIsCap || vIsLow {
+			n.WriteByte(v)
+			capNext = false
+		} else if vIsNum := v >= '0' && v <= '9'; vIsNum {
+			n.WriteByte(v)
+			capNext = true
+		} else {
+			capNext = v == '_' || v == ' ' || v == '-' || v == '.'
+		}
+	}
+	return n.String()
+}
+
+// ToCamel converts a string to CamelCase
+func ToCamel(s string) string {
+	return toCamelInitCase(s, true)
+}
+
+// ToLowerCamel converts a string to lowerCamelCase
+func ToLowerCamel(s string) string {
+	return toCamelInitCase(s, false)
+}