Add logic to allow empty Podfiles

Author: a-maurice

source/IOSResolver/src/IOSResolver.cs

@@ -516,6 +516,10 @@ protected override bool Read(string filename, Logger logger) {
     private const string PREFERENCE_PODFILE_ALLOW_PODS_IN_MULTIPLE_TARGETS =
         PREFERENCE_NAMESPACE + "PodfileAllowPodsInMultipleTargets";
 
+    // Whether to allow empty Podfile generation.
+    private const string PREFERENCE_ALLOW_EMPTY_PODFILE_GENERATION =
+        PREFERENCE_NAMESPACE + "AllowEmptyPodfileGeneration";
+
     // Whether to use Swift Package Manager for dependency resolution.
     private const string PREFERENCE_SWIFT_PACKAGE_MANAGER_ENABLED =
         PREFERENCE_NAMESPACE + "SwiftPackageManagerEnabled";
@@ -536,6 +540,7 @@ protected override bool Read(string filename, Logger logger) {
         PREFERENCE_SWIFT_LANGUAGE_VERSION,
         PREFERENCE_PODFILE_ALWAYS_ADD_MAIN_TARGET,
         PREFERENCE_PODFILE_ALLOW_PODS_IN_MULTIPLE_TARGETS,
+        PREFERENCE_ALLOW_EMPTY_PODFILE_GENERATION,
         PREFERENCE_SWIFT_PACKAGE_MANAGER_ENABLED
     };
 
@@ -1172,6 +1177,18 @@ public static bool PodfileAllowPodsInMultipleTargets {
         }
     }
 
+    /// <summary>
+    /// Whether to allow empty Podfile generation. True by default.
+    /// If true, a Podfile will be generated even if there are no Pods to install.
+    /// </summary>
+    public static bool AllowEmptyPodfileGeneration {
+        get { return settings.GetBool(PREFERENCE_ALLOW_EMPTY_PODFILE_GENERATION,
+                                    defaultValue: true); }
+        set {
+            settings.SetBool(PREFERENCE_ALLOW_EMPTY_PODFILE_GENERATION, value);
+        }
+    }
+
     /// <summary>
     /// Whether to use Swift Package Manager for dependency resolution.
     /// If enabled, the resolver will attempt to use SPM for packages that define SPM support,
@@ -1315,7 +1332,7 @@ public static bool PodPresent(string pod) {
     private static bool InjectDependencies() {
         return (EditorUserBuildSettings.activeBuildTarget == BuildTarget.iOS ||
                 EditorUserBuildSettings.activeBuildTarget == BuildTarget.tvOS) &&
-            Enabled && (pods.Count > 0 || spmDependencies.SwiftPackages.Count > 0);
+            Enabled && (pods.Count > 0 || spmDependencies.SwiftPackages.Count > 0 || AllowEmptyPodfileGeneration);
     }
 
     /// <summary>
@@ -2193,6 +2210,7 @@ public static void OnPostProcessResolveSwiftPackages(BuildTarget buildTarget,
     public static void OnPostProcessGenPodfile(BuildTarget buildTarget,
                                                string pathToBuiltProject) {
         if (!InjectDependencies() || !PodfileGenerationEnabled) return;
+        if (pods.Count == 0 && !AllowEmptyPodfileGeneration) return;
         GenPodfile(buildTarget, pathToBuiltProject, podsToIgnore);
     }
 
@@ -2363,7 +2381,7 @@ public static void GenPodfile(BuildTarget buildTarget,
             }
             filteredPods.Add(pod);
         }
-        if (filteredPods.Count == 0) {
+        if (filteredPods.Count == 0 && !AllowEmptyPodfileGeneration) {
             Log("Found no pods to add, skipping generation of the Podfile");
             podfileGenerationSkipped = true;
             return;

source/IOSResolver/src/IOSResolverSettingsDialog.cs

@@ -44,6 +44,7 @@ private class Settings {
         internal bool podfileAlwaysAddMainTarget;
         internal bool podfileAllowPodsInMultipleTargets;
         internal bool swiftPackageManagerEnabled;
+        internal bool allowEmptyPodfileGeneration;
         internal bool useProjectSettings;
         internal EditorMeasurement.Settings analyticsSettings;
 
@@ -66,6 +67,7 @@ internal Settings() {
             podfileAlwaysAddMainTarget = IOSResolver.PodfileAlwaysAddMainTarget;
             podfileAllowPodsInMultipleTargets = IOSResolver.PodfileAllowPodsInMultipleTargets;
             swiftPackageManagerEnabled = IOSResolver.SwiftPackageManagerEnabled;
+            allowEmptyPodfileGeneration = IOSResolver.AllowEmptyPodfileGeneration;
             useProjectSettings = IOSResolver.UseProjectSettings;
             analyticsSettings = new EditorMeasurement.Settings(IOSResolver.analytics);
         }
@@ -89,6 +91,7 @@ internal void Save() {
             IOSResolver.PodfileAlwaysAddMainTarget = podfileAlwaysAddMainTarget;
             IOSResolver.PodfileAllowPodsInMultipleTargets = podfileAllowPodsInMultipleTargets;
             IOSResolver.SwiftPackageManagerEnabled = swiftPackageManagerEnabled;
+            IOSResolver.AllowEmptyPodfileGeneration = allowEmptyPodfileGeneration;
             IOSResolver.UseProjectSettings = useProjectSettings;
             analyticsSettings.Save();
         }
@@ -162,6 +165,14 @@ public void OnGUI() {
                         "fall back to Cocoapods for any dependencies that do not have an " +
                         "SPM equivalent specified.");
 
+        GUILayout.BeginHorizontal();
+        GUILayout.Label("Allow empty Podfile generation", EditorStyles.boldLabel);
+        settings.allowEmptyPodfileGeneration =
+            EditorGUILayout.Toggle(settings.allowEmptyPodfileGeneration);
+        GUILayout.EndHorizontal();
+        GUILayout.Label("If enabled, a Podfile will be generated even if there are no Pods " +
+                        "to install.");
+
         GUILayout.Box("", GUILayout.ExpandWidth(true), GUILayout.Height(1));
 
         GUILayout.BeginHorizontal();
@@ -378,6 +389,9 @@ public void OnGUI() {
                     new KeyValuePair<string, string>(
                         "swiftLanguageVersion",
                         IOSResolver.SwiftLanguageVersion.ToString()),
+                    new KeyValuePair<string, string>(
+                        "allowEmptyPodfileGeneration",
+                        IOSResolver.AllowEmptyPodfileGeneration.ToString()),
                 },
                 "Settings Save");
             settings.Save();