Add String extensions and remove Scripts directory

- Added String.swift with String extension utilities
- Updated code formatting and implementation
- Removed Scripts/setup-rfc.sh
- Updated Package.swift and gitignore

Author: coenttb

.gitignore

@@ -1,32 +1,23 @@
-# Swift Package Manager
-.build/
-.swiftpm/
-Package.resolved
+*~
 
-# Xcode
-*.xcodeproj/
-*.xcworkspace/
-xcuserdata/
+Package.resolved
 DerivedData/
-*.hmap
-*.ipa
-*.dSYM.zip
-*.dSYM
-
-# macOS
-.DS_Store
-
-# AI tools
-CLAUDE.md
-.claude
-.cursor/
-.aider*
+Thumbs.db
 
-# IDE
-.vscode/
-.idea/
+# Dot files/directories (opt-in only)
+/.*
+!/.github
+!/.gitignore
+!/.spi.yml
+!/.swift-format
+!/.swiftformat
+!/.swiftlint.yml
 
-# Temporary files
-*.tmp
-*.swp
-*~
+# Documentation (opt-in for top-level .md files only)
+/*.md
+!README.md
+!LICENSE.md
+!CHANGELOG.md
+!CONTRIBUTING.md
+!CODE_OF_CONDUCT.md
+!SECURITY.md

Package.swift

@@ -1,6 +1,5 @@
 // swift-tools-version:6.0
 
-import Foundation
 import PackageDescription
 
 extension String {
@@ -15,8 +14,10 @@ extension Target.Dependency {
 let package = Package(
     name: "swift-rfc-1123",
     platforms: [
-        .macOS(.v13),
-        .iOS(.v16)
+        .macOS(.v15),
+        .iOS(.v18),
+        .tvOS(.v18),
+        .watchOS(.v11)
     ],
     products: [
         .library(name: .rfc1123, targets: [.rfc1123]),
@@ -41,4 +42,4 @@ let package = Package(
     swiftLanguageModes: [.v6]
 )
 
-extension String { var tests: Self { self + " Tests" } }
+extension String { var tests: Self { self + " Tests" } }

Scripts/setup-rfc.sh

@@ -5,7 +5,6 @@
 //  Created by Coen ten Thije Boonkkamp on 28/12/2024.
 //
 
-import Foundation
 import RFC_1035
 
 /// RFC 1123 compliant host name
@@ -65,7 +64,7 @@ extension Domain {
 extension Domain {
     /// A type-safe host label that enforces RFC 1123 rules
     public struct Label: Hashable, Sendable {
-        private let value: String
+        public let value: String
 
         /// Initialize a label, validating RFC 1123 rules
         internal init(_ string: String, validateAs type: ValidationType) throws {
@@ -84,8 +83,6 @@ extension Domain {
 
             self.value = string
         }
-
-        public var stringValue: String { value }
     }
 }
 
@@ -114,7 +111,7 @@ extension Domain {
 extension Domain {
     /// The complete host name as a string
     public var name: String {
-        labels.map(\.stringValue).joined(separator: ".")
+        labels.map(String.init).joined(separator: ".")
     }
 
     /// The top-level domain (rightmost label)
@@ -135,7 +132,7 @@ extension Domain {
 
     /// Creates a subdomain by prepending new labels
     public func addingSubdomain(_ components: [String]) throws -> Domain {
-        try Domain(labels: components + labels.map(\.stringValue))
+        try Domain(labels: components + labels.map(String.init))
     }
 
     public func addingSubdomain(_ components: String...) throws -> Domain {
@@ -145,41 +142,24 @@ extension Domain {
     /// Returns the parent domain by removing the leftmost label
     public func parent() throws -> Domain? {
         guard labels.count > 1 else { return nil }
-        return try Domain(labels: labels.dropFirst().map(\.stringValue))
+        return try Domain(labels: labels.dropFirst().map(String.init))
     }
 
     /// Returns the root domain (tld + sld)
     public func root() throws -> Domain? {
         guard labels.count >= 2 else { return nil }
-        return try Domain(labels: labels.suffix(2).map(\.stringValue))
+        return try Domain(labels: labels.suffix(2).map(String.init))
     }
 }
 
 // MARK: - Errors
 extension Domain {
-    public enum ValidationError: Error, LocalizedError, Equatable {
+    public enum ValidationError: Error, Equatable {
         case empty
         case tooLong(_ length: Int)
         case tooManyLabels
         case invalidLabel(_ label: String)
         case invalidTLD(_ tld: String)
-
-        public var errorDescription: String? {
-            switch self {
-            case .empty:
-                return "Host name cannot be empty"
-            case .tooLong(let length):
-                return "Host name length \(length) exceeds maximum of \(Limits.maxLength)"
-            case .tooManyLabels:
-                return "Host name has too many labels (maximum \(Limits.maxLabels))"
-            case .invalidLabel(let label):
-                return
-                    "Invalid label '\(label)'. Must start and end with letter/digit, and contain only letters/digits/hyphens"
-            case .invalidTLD(let tld):
-                return
-                    "Invalid TLD '\(tld)'. Must start and end with letter, and contain only letters/digits/hyphens"
-            }
-        }
     }
 }
 

Sources/RFC_1123/RFC 1123.swift

@@ -0,0 +1,14 @@
+//
+//  File.swift
+//  swift-rfc-1123
+//
+//  Created by Coen ten Thije Boonkkamp on 19/11/2025.
+//
+
+extension String {
+    public init(
+        _ label: RFC_1123.Domain.Label
+    ) {
+        self = label.value
+    }
+}

Sources/RFC_1123/String.swift

@@ -5,7 +5,6 @@
 //  Created by Coen ten Thije Boonkkamp on 28/12/2024.
 //
 
-import Foundation
 import RFC_1123
 import Testing
 
@@ -108,12 +107,4 @@ struct RFC1123Tests {
         let host = try Domain.subdomain("com", "example", "host")
         #expect(host.name == "host.example.com")
     }
-
-    @Test("Successfully encodes and decodes")
-    func testCodable() throws {
-        let original = try Domain("example.com")
-        let encoded = try JSONEncoder().encode(original)
-        let decoded = try JSONDecoder().decode(Domain.self, from: encoded)
-        #expect(original == decoded)
-    }
 }

Tests/RFC_1123 Tests/RFC 1123 Tests.swift

@@ -5,7 +5,6 @@
 //  Verifies that README code examples actually work
 //
 
-import Foundation
 import RFC_1035
 import RFC_1123
 import Testing
@@ -81,7 +80,7 @@ struct ReadmeVerificationTests {
         #expect(rfc1123Domain.name == "example.com")
 
         // Convert RFC 1123 domain to RFC 1035
-        let backToRFC1035 = try rfc1123Domain.toRFC1035()
+        let backToRFC1035 = try RFC_1035.Domain(rfc1123Domain)
 
         #expect(backToRFC1035.name == "example.com")
     }
@@ -98,17 +97,4 @@ struct ReadmeVerificationTests {
             _ = try RFC_1123.Domain("example.123com")
         }
     }
-
-    @Test("README Line 184-190: Codable support")
-    func codableSupport() throws {
-        let host = try RFC_1123.Domain("example.com")
-
-        // Encode to JSON
-        let encoded = try JSONEncoder().encode(host)
-
-        // Decode from JSON
-        let decoded = try JSONDecoder().decode(RFC_1123.Domain.self, from: encoded)
-
-        #expect(host == decoded)
-    }
 }