Add settingPresets option

Sources/ProjectSpec/ProjectSpec.swift

@@ -29,6 +29,28 @@ public struct ProjectSpec {
     public struct Options {
         public var carthageBuildPath: String?
         public var bundleIdPrefix: String?
+        public var applySettingPresets: SettingPresets = .all
+
+        public enum SettingPresets: String {
+            case all
+            case none
+            case project
+            case targets
+
+            public var applyTarget: Bool {
+                switch self {
+                case .all, .targets: return true
+                default: return false
+                }
+            }
+
+            public var applyProject: Bool {
+                switch self {
+                case .all, .project: return true
+                default: return false
+                }
+            }
+        }
 
         public init() {
         }
@@ -133,5 +155,6 @@ extension ProjectSpec.Options: JSONObjectConvertible {
     public init(jsonDictionary: JSONDictionary) throws {
         carthageBuildPath = jsonDictionary.json(atKeyPath: "carthageBuildPath")
         bundleIdPrefix = jsonDictionary.json(atKeyPath: "bundleIdPrefix")
+        applySettingPresets = jsonDictionary.json(atKeyPath: "applySettingPresets") ?? .all
     }
 }

Sources/XcodeGenKit/SettingsBuilder.swift

@@ -18,7 +18,7 @@ extension ProjectSpec {
     public func getProjectBuildSettings(config: Config) -> BuildSettings {
         var buildSettings: BuildSettings = [:]
 
-        if let type = config.type {
+        if let type = config.type, options.applySettingPresets.applyProject {
             buildSettings += SettingsPresetFile.base.getBuildSettings()
             buildSettings += SettingsPresetFile.config(type).getBuildSettings()
         }
@@ -30,10 +30,12 @@ extension ProjectSpec {
 
     public func getTargetBuildSettings(target: Target, config: Config) -> BuildSettings {
         var buildSettings = BuildSettings()
-
-        buildSettings += SettingsPresetFile.platform(target.platform).getBuildSettings()
-        buildSettings += SettingsPresetFile.product(target.type).getBuildSettings()
-        buildSettings += SettingsPresetFile.productPlatform(target.type, target.platform).getBuildSettings()
+
+        if options.applySettingPresets.applyTarget {
+            buildSettings += SettingsPresetFile.platform(target.platform).getBuildSettings()
+            buildSettings += SettingsPresetFile.product(target.type).getBuildSettings()
+            buildSettings += SettingsPresetFile.productPlatform(target.type, target.platform).getBuildSettings()
+        }
         buildSettings += getBuildSettings(settings: target.settings, config: config)
 
         return buildSettings

Tests/XcodeGenKitTests/ProjectGeneratorTests.swift

@@ -41,6 +41,16 @@ func projectGeneratorTests() {
                 }
                 try expect(buildConfig.buildSettings["PRODUCT_BUNDLE_IDENTIFIER"] as? String) == "com.test.MyFramework"
             }
+
+            $0.it("clears setting presets") {
+                var options = ProjectSpec.Options()
+                options.applySettingPresets = .none
+                let spec = ProjectSpec(name: "test", targets: [framework], options: options)
+                let project = try getProject(spec)
+                let allSettings = project.pbxproj.buildConfigurations.reduce([:]) { $0.merged($1.buildSettings)}.keys.sorted()
+                try expect(allSettings) == ["SETTING_2"]
+            }
+
         }
 
         $0.describe("Config") {

docs/ProjectSpec.md

@@ -64,9 +64,13 @@ Note that target names can also be changed by adding a `name` property to a targ
 ### Options
 - ⚪️ **carthageBuildPath**: `String` - The path to the carthage build directory. Defaults to `Carthage/Build`. This is used when specifying target carthage dependencies
 - ⚪️ **bundleIdPrefix**: `String` - If this is specified then any target that doesn't have an `PRODUCT_BUNDLE_IDENTIFIER` (via all levels of build settings) will get an autogenerated one by combining `bundleIdPrefix` and the target name: `bundleIdPrefix.name`. The target name will be stripped of all characters that aren't alphanumerics, hyphens, or periods. Underscores will be replace with hyphens.
-
+- ⚪️ **applySettingPresets**: `String` - This controls the settings that are automatically applied to the project and its targets. These are the same build settings that Xcode would add when creating a new project. Project settings are applied by config type. Target settings are applied by the product type and platform. By default this is set to `all`
+	- `all`: project and target settings
+	- `project`: only project settings
+	- `targets`: only target settings
+	- `none`: no settings are automatically applied	
 ### Configs
-Each config maps to a build type of either `debug` or `release` which will then apply default build settings. Any value other than `debug` or `release` (for example "none"), will mean no default build settings will be applied.
+Each config maps to a build type of either `debug` or `release` which will then apply default build settings to the project. Any value other than `debug` or `release` (for example `none`), will mean no default build settings will be applied to the project.
 
 ```yaml
 configs: