fix: mapping Info.plist when referenced with a SRCROOT or PROJECT_DIR variable

Sources/XcodeGraphMapper/Mappers/Targets/PBXTarget+BuildSettings.swift

@@ -18,7 +18,7 @@ extension PBXTarget {
     /// Retrieves the path to the Info.plist file from the target's build settings.
     ///
     /// - Returns: The `INFOPLIST_FILE` value if present, otherwise `nil`.
-    func infoPlistPath() -> [BuildConfiguration: String] {
+    func infoPlistPaths() -> [BuildConfiguration: String] {
         buildConfigurationList?.stringSettings(for: .infoPlistFile) ?? [:]
     }
 

Sources/XcodeGraphMapper/Mappers/Targets/PBXTargetMapper.swift

@@ -247,8 +247,15 @@ struct PBXTargetMapper: PBXTargetMapping {
 
     /// Extracts and parses the project's Info.plist as a dictionary, or returns an empty dictionary if none is found.
     private func extractInfoPlist(from target: PBXTarget, xcodeProj: XcodeProj) async throws -> InfoPlist {
-        if let (config, plistPath) = target.infoPlistPath().first {
-            let path = xcodeProj.srcPath.appending(try RelativePath(validating: plistPath))
+        if let (config, plistPath) = target.infoPlistPaths().sorted(by: { $0.key.name > $1.key.name }).first {
+            let pathString = plistPath
+                .replacingOccurrences(of: "$(SRCROOT)", with: xcodeProj.srcPathString)
+                .replacingOccurrences(of: "$(PROJECT_DIR)", with: xcodeProj.projectPath.parentDirectory.pathString)
+            let path = if pathString.starts(with: "/") {
+                try AbsolutePath(validating: pathString)
+            } else {
+                xcodeProj.srcPath.appending(try RelativePath(validating: pathString))
+            }
             let plistDictionary = try await readPlistAsDictionary(at: path)
             return .dictionary(plistDictionary, configuration: config)
         }

Tests/XcodeGraphMapperTests/MapperTests/Target/PBXTargetMapperTests.swift

@@ -415,6 +415,97 @@ struct PBXTargetMapperTests: Sendable {
         }() == true)
     }
 
+    @Test("Parses a valid Info.plist referenced with a SRCROOT variable")
+    func testMapTarget_validPlist_referenced_with_SRCROOT() async throws {
+        // Given
+
+        let xcodeProj = try await XcodeProj.test()
+        let srcPath = xcodeProj.srcPath
+        let relativePath = try RelativePath(validating: "Info.plist")
+        let plistPath = srcPath.appending(relativePath)
+
+        let plistContent: [String: Any] = [
+            "CFBundleIdentifier": "com.example.app",
+            "CFBundleName": "ExampleApp",
+            "CFVersion": 1.4,
+        ]
+        let data = try PropertyListSerialization.data(fromPropertyList: plistContent, format: .xml, options: 0)
+        try data.write(to: URL(fileURLWithPath: plistPath.pathString))
+
+        let target = createTarget(
+            name: "App",
+            xcodeProj: xcodeProj,
+            productType: .application,
+            buildSettings: [
+                "PRODUCT_BUNDLE_IDENTIFIER": "com.example.app",
+                "INFOPLIST_FILE": "$(SRCROOT)/\(relativePath.pathString)",
+            ]
+        )
+
+        try xcodeProj.write(path: xcodeProj.path!)
+        let mapper = PBXTargetMapper()
+
+        // When
+        let mapped = try await mapper.map(pbxTarget: target, xcodeProj: xcodeProj)
+
+        // Then
+        #expect(
+            mapped.infoPlist == .dictionary(
+                [
+                    "CFBundleIdentifier": "com.example.app",
+                    "CFBundleName": "ExampleApp",
+                    "CFVersion": 1.4,
+                ],
+                configuration: .release("Release")
+            )
+        )
+    }
+
+    @Test("Parses a valid Info.plist referenced with a PROJECT_DIR variable")
+    func testMapTarget_validPlist_referenced_with_PROJECT_DIR() async throws {
+        // Given
+        let xcodeProj = try await XcodeProj.test()
+        let srcPath = xcodeProj.srcPath
+        let relativePath = try RelativePath(validating: "Info.plist")
+        let plistPath = srcPath.appending(relativePath)
+
+        let plistContent: [String: Any] = [
+            "CFBundleIdentifier": "com.example.app",
+            "CFBundleName": "ExampleApp",
+            "CFVersion": 1.4,
+        ]
+        let data = try PropertyListSerialization.data(fromPropertyList: plistContent, format: .xml, options: 0)
+        try data.write(to: URL(fileURLWithPath: plistPath.pathString))
+
+        let target = createTarget(
+            name: "App",
+            xcodeProj: xcodeProj,
+            productType: .application,
+            buildSettings: [
+                "PRODUCT_BUNDLE_IDENTIFIER": "com.example.app",
+                "INFOPLIST_FILE": "$(PROJECT_DIR)/\(relativePath.pathString)",
+            ]
+        )
+
+        try xcodeProj.write(path: xcodeProj.path!)
+        let mapper = PBXTargetMapper()
+
+        // When
+        let mapped = try await mapper.map(pbxTarget: target, xcodeProj: xcodeProj)
+
+        // Then
+        #expect(
+            mapped.infoPlist == .dictionary(
+                [
+                    "CFBundleIdentifier": "com.example.app",
+                    "CFBundleName": "ExampleApp",
+                    "CFVersion": 1.4,
+                ],
+                configuration: .release("Release")
+            )
+        )
+    }
+
     @Test("Throws invalidPlist when Info.plist cannot be parsed")
     func testMapTarget_invalidPlist() async throws {
         // Given