Respect some xclint configs

Sources/XCLinting/ConfigurationFile.swift

@@ -96,4 +96,22 @@ extension Configuration: Decodable {
 
 		self.rules = decodedRules
 	}
+
+	public func validate() throws {
+		let allIdentifiers = XCLinter.ruleIdentifiers
+
+		for id in disabledRules {
+			if allIdentifiers.contains(id) == false {
+				throw XCLintError.unrecognizedRuleName(id)
+			}
+		}
+	}
+}
+
+extension Configuration {
+	public var enabledRules: Set<String> {
+		let defaultIdentifiers = XCLinter.defaultRuleIdentifiers
+
+		return defaultIdentifiers.subtracting(disabledRules)
+	}
 }

Sources/XCLinting/XCLintError.swift

@@ -2,7 +2,8 @@ public enum XCLintError: Error {
 	case noProjectFileSpecified
 	case projectFileNotFound(String)
 	case badProjectFile(String)
-
+	case unrecognizedRuleName(String)
+
 	public var localizedDescription: String {
 		switch self {
 		case .noProjectFileSpecified:
@@ -11,6 +12,8 @@ public enum XCLintError: Error {
 			return "Project file not found at '\(path)'."
 		case let .badProjectFile(message):
 			return "Bad project file: \(message)."
+		case let .unrecognizedRuleName(name):
+			return "Unrecognized rule name: \(name)"
 		}
 	}
 }

Sources/XCLinting/XCLinter.swift

@@ -23,10 +23,19 @@ public struct XCLinter {
 	public init(projectPath: String, configuration: Configuration) throws {
 		let env = try Environment(projectPath: projectPath, configuration: configuration)
 
-		self.init(environment: env)
+		try self.init(environment: env)
 	}
 
-	public init(environment: Environment, rules: [Rule] = XCLinter.defaultRules) {
+	public init(environment: Environment) throws {
+		let config = environment.configuration
+		let enabledRules = config.enabledRules
+
+		let rules = Self.ruleMap.filter({ enabledRules.contains($0.key) }).values
+
+		self.init(environment: environment, rules: Array(rules))
+	}
+
+	public init(environment: Environment, rules: [Rule]) {
 		self.environment = environment
 		self.rules = rules
 	}
@@ -56,8 +65,17 @@ extension XCLinter.Environment {
 }
 
 extension XCLinter {
-	public static let defaultRules: [Rule] = [
-		embeddedBuildSettingsRule,
-		{ try BuildFilesAreOrderedRule().run($0) }
+	public static let defaultRuleIdentifiers: Set<String> = [
+		"embedded_build_setting",
+		"build_files_ordered"
+	]
+
+	public static let defaultRules: [Rule] = Array(ruleMap.filter({ defaultRuleIdentifiers.contains($0.0) }).values)
+	public static let ruleIdentifiers: Set<String> = Set(ruleMap.keys)
+
+	public static let ruleMap: [String: Rule] = [
+		"embedded_build_setting": embeddedBuildSettingsRule,
+		"build_files_ordered": { try BuildFilesAreOrderedRule().run($0) },
+		"groups_sorted": groupsAreSortedRule,
 	]
 }

Sources/clitool/main.swift

@@ -34,9 +34,12 @@ struct XCLintCommand: ParsableCommand {
 
 		// find the effective environment
 		let config = try resolvedConfiguration(projectRootURL: URL(fileURLWithPath: projPath))
+
+		try config.validate()
+
 		let env = try XCLinter.Environment(projectPath: projPath, configuration: config)
 
-		let linter = XCLinter(environment: env)
+		let linter = try XCLinter(environment: env)
 
 		let violations = try linter.run()