From c9c589c5eef4f151a1a52a78be66da794cbe57ac Mon Sep 17 00:00:00 2001
From: Yonas Kolb <yonaskolb@gmail.com>
Date: Mon, 25 Sep 2017 13:23:47 +0200
Subject: [PATCH] add optional replace syntax when merging includes

---
 Fixtures/include_test.yml                     | 4 +++-
 Fixtures/included.yml                         | 4 ++++
 Sources/XcodeGenKit/SpecLoader.swift          | 5 ++++-
 Tests/XcodeGenKitTests/SpecLoadingTests.swift | 3 ++-
 4 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/Fixtures/include_test.yml b/Fixtures/include_test.yml
index 02fa473e..dcfb4df8 100644
--- a/Fixtures/include_test.yml
+++ b/Fixtures/include_test.yml
@@ -6,6 +6,8 @@ settingGroups:
     MY_SETTING3: VALUE3
   new:
     MY_SETTING: VALUE
+  toReplace:REPLACE:
+    MY_SETTING2: VALUE2
 targets:
   NewTarget:
     type: application
@@ -13,4 +15,4 @@ targets:
   IncludedTarget:
     name: IncludedTargetNew
     platform: tvOS
-    sources: Target
+    sources:REPLACE: NewSource
diff --git a/Fixtures/included.yml b/Fixtures/included.yml
index 1619d813..b82d395c 100644
--- a/Fixtures/included.yml
+++ b/Fixtures/included.yml
@@ -3,7 +3,11 @@ settingGroups:
   test:
     MY_SETTING1: VALUE1
     MY_SETTING2: VALUE2
+  toReplace:
+    MY_SETTING1: VALUE1
 targets:
   IncludedTarget:
     type: application
     platform: iOS
+    sources:
+      - Target
diff --git a/Sources/XcodeGenKit/SpecLoader.swift b/Sources/XcodeGenKit/SpecLoader.swift
index 4ecab1fe..043b59ca 100644
--- a/Sources/XcodeGenKit/SpecLoader.swift
+++ b/Sources/XcodeGenKit/SpecLoader.swift
@@ -52,7 +52,10 @@ public struct SpecLoader {
         var merged = base
 
         for (key, value) in dictionary {
-            if let dictionary = value as? JSONDictionary, let base = merged[key] as? JSONDictionary {
+            if key.hasSuffix(":REPLACE") {
+                let newKey = key.replacingOccurrences(of: ":REPLACE", with: "")
+                merged[newKey] = value
+            } else if let dictionary = value as? JSONDictionary, let base = merged[key] as? JSONDictionary {
                 merged[key] = merge(dictionary: dictionary, onto: base)
             } else if let array = value as? [Any], let base = merged[key] as? [Any] {
                 merged[key] = base + array
diff --git a/Tests/XcodeGenKitTests/SpecLoadingTests.swift b/Tests/XcodeGenKitTests/SpecLoadingTests.swift
index 8a10deaf..7679ad31 100644
--- a/Tests/XcodeGenKitTests/SpecLoadingTests.swift
+++ b/Tests/XcodeGenKitTests/SpecLoadingTests.swift
@@ -39,9 +39,10 @@ func specLoadingTests() {
             try expect(spec.settingGroups) == [
                 "test": Settings(dictionary: ["MY_SETTING1": "NEW VALUE", "MY_SETTING2": "VALUE2", "MY_SETTING3": "VALUE3"]),
                 "new": Settings(dictionary: ["MY_SETTING": "VALUE"]),
+                "toReplace": Settings(dictionary: ["MY_SETTING2": "VALUE2"]),
             ]
             try expect(spec.targets) == [
-                Target(name: "IncludedTargetNew", type: .application, platform: .tvOS, sources: ["Target"]),
+                Target(name: "IncludedTargetNew", type: .application, platform: .tvOS, sources: ["NewSource"]),
                 Target(name: "NewTarget", type: .application, platform: .iOS),
             ]
         }