Sanitize the ends of folder source paths (#1341)

* Sanitize the ends of folder source paths

Setting the source: `/foo/bar` is _sometimes_ different from `/foo/bar/` even if `bar` is a folder in both cases. The result of this is that we often run into a race condition where we have two objects with the same hash but different properties. This fixes #1339 and #1131.

* Update CHANGELOG.md

* Update TargetSource.swift

* Update TargetSource.swift

* Update TargetSource.swift

CHANGELOG.md

@@ -6,6 +6,10 @@
 
 - Added support for shared breakpoints #177 @alexruperez @myihsan
 
+### Fixed
+
+- Fix case where source paths may not be deduplicated correctly resulting in duplicate groups and/or a crash in running Xcodegen #1341 @dalemyers
+
 ## 2.34.0
 
 ### Changed

Sources/ProjectSpec/TargetSource.swift

@@ -4,8 +4,13 @@ import PathKit
 
 public struct TargetSource: Equatable {
     public static let optionalDefault = false
-
-    public var path: String
+    
+    public var path: String {
+        didSet {
+            path = (path as NSString).standardizingPath
+        }
+    }
+    
     public var name: String?
     public var group: String?
     public var compilerFlags: [String]
@@ -48,7 +53,7 @@ public struct TargetSource: Equatable {
         attributes: [String] = [],
         resourceTags: [String] = []
     ) {
-        self.path = path
+        self.path = (path as NSString).standardizingPath
         self.name = name
         self.group = group
         self.compilerFlags = compilerFlags
@@ -83,6 +88,7 @@ extension TargetSource: JSONObjectConvertible {
 
     public init(jsonDictionary: JSONDictionary) throws {
         path = try jsonDictionary.json(atKeyPath: "path")
+        path = (path as NSString).standardizingPath // Done in two steps as the compiler can't figure out the types otherwise
         name = jsonDictionary.json(atKeyPath: "name")
         group = jsonDictionary.json(atKeyPath: "group")