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Sources/Nats/Extensions/String+Utilities.swift

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+// Copyright 2024 The NATS Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import Foundation
+
+extension String {
+    private static let charactersToTrim: CharacterSet = .whitespacesAndNewlines.union(
+        CharacterSet(charactersIn: "'"))
+
+    static func hash() -> String {
+        let uuid = String.uuid()
+        return uuid[0...7]
+    }
+
+    func trimWhitespacesAndApostrophes() -> String {
+        return self.trimmingCharacters(in: String.charactersToTrim)
+    }
+
+    static func uuid() -> String {
+        return UUID().uuidString.trimmingCharacters(in: .punctuationCharacters)
+    }
+
+    subscript(bounds: CountableClosedRange<Int>) -> String {
+        let start = index(startIndex, offsetBy: bounds.lowerBound)
+        let end = index(startIndex, offsetBy: bounds.upperBound)
+        return String(self[start...end])
+    }
+}