Fix AddBuildPhase able to add duplicate files

Add a check - if a file exists in the PBXBuildFile and the PBXFileReference sections do not add it

Author: Dimitar Kerezov

lib/pbxProject.js

@@ -521,19 +521,46 @@ pbxProject.prototype.addXCConfigurationList = function (configurationObjectsArra
 
 pbxProject.prototype.addBuildPhase = function (filePathsArray, isa, comment) {
     var section = this.hash.project.objects[isa],
+        fileReferenceSection = this.pbxFileReferenceSection(),
+        buildFileSection = this.pbxBuildFileSection(),
         buildPhaseUuid = this.generateUuid(),
         commentKey = f("%s_comment", buildPhaseUuid),
         buildPhase = {
             isa: isa,
             buildActionMask: 2147483647,
             files: [],
             runOnlyForDeploymentPostprocessing: 0
-        };
+        },
+        filePathToBuildFile = {};
+    
+    for (var key in buildFileSection) {
+        // only look for comments
+        if (!COMMENT_KEY.test(key)) continue;
+        
+        var buildFileKey = key.split(COMMENT_KEY)[0],
+            buildFile = buildFileSection[buildFileKey];
+            fileReference = fileReferenceSection[buildFile.fileRef];
+
+        if (!fileReference) continue;
+
+        var pbxFileObj = new pbxFile(fileReference.path);
+        
+        filePathToBuildFile[fileReference.path] = {uuid: buildFileKey, basename: pbxFileObj.basename, group: pbxFileObj.group};
+    }
 
     for (var index = 0; index < filePathsArray.length; index++) {
         var filePath = filePathsArray[index],
+            filePathQuoted = "\"" + filePath + "\"",
             file = new pbxFile(filePath);
 
+        if (filePathToBuildFile[filePath]) {
+            buildPhase.files.push(pbxBuildPhaseObj(filePathToBuildFile[filePath]));
+            continue;
+        } else if (filePathToBuildFile[filePathQuoted]) {
+            buildPhase.files.push(pbxBuildPhaseObj(filePathToBuildFile[filePathQuoted]));
+            continue;
+        }
+        
         file.uuid = this.generateUuid();
         file.fileRef = this.generateUuid();
         this.addToPbxFileReferenceSection(file);    // PBXFileReference

test/addBuildPhase.js

@@ -62,15 +62,47 @@ exports.addBuildPhase = {
             fileRefs = [];
 
         for (var index = 0; index < buildPhase.files.length; index++) {
-            var file = buildPhase.files[index];
-            fileRefs.push(buildFileSection[file.value].fileRef);
+            var file = buildPhase.files[index],
+                fileRef = buildFileSection[file.value].fileRef;
+                
+            test.ok(fileRefSection[fileRef]);            
         }
+
+        test.done();
+    },
+    'should not add files to PBXFileReference section if already added': function (test) {
+        var fileRefSection = proj.pbxFileReferenceSection(),
+            initialFileReferenceSectionItemsCount = Object.keys(fileRefSection),
+            buildPhase = proj.addBuildPhase(['AppDelegate.m', 'main.m'], 'PBXResourcesBuildPhase', 'My build phase').buildPhase,
+            afterAdditionBuildFileSectionItemsCount = Object.keys(fileRefSection);
+        
+        test.deepEqual(initialFileReferenceSectionItemsCount, afterAdditionBuildFileSectionItemsCount);
+        test.done();
+    },
+    'should not add files to PBXBuildFile section if already added': function (test) {
+        var buildFileSection  = proj.pbxBuildFileSection(),
+            initialBuildFileSectionItemsCount  = Object.keys(buildFileSection),
+            buildPhase = proj.addBuildPhase(['AppDelegate.m', 'main.m'], 'PBXResourcesBuildPhase', 'My build phase').buildPhase,
+            afterAdditionBuildFileSectionItemsCount = Object.keys(buildFileSection);
 
-        for (var index = 0; index < fileRefs.length; index++) {
-            var fileRef = fileRefs[index];
+        test.deepEqual(initialBuildFileSectionItemsCount, afterAdditionBuildFileSectionItemsCount);
+        test.done();
+    },
+    'should add only missing files to PBXFileReference section': function (test) {
+        var fileRefSection = proj.pbxFileReferenceSection(),
+            buildFileSection = proj.pbxBuildFileSection(),
+            initialFileReferenceSectionItemsCount = Object.keys(fileRefSection),
+            buildPhase = proj.addBuildPhase(['file.m', 'AppDelegate.m'], 'PBXResourcesBuildPhase', 'My build phase').buildPhase,
+            afterAdditionBuildFileSectionItemsCount = Object.keys(fileRefSection);
+        
+        for (var index = 0; index < buildPhase.files.length; index++) {
+            var file = buildPhase.files[index],
+                fileRef = buildFileSection[file.value].fileRef;
+                
             test.ok(fileRefSection[fileRef]);            
         }
-
+        
+        test.deepEqual(initialFileReferenceSectionItemsCount.length, afterAdditionBuildFileSectionItemsCount.length - 2);
         test.done();
     }
 }