Update project to swift 5

Fixed the empty string issue

Author: rckoenes

POEditor.xcodeproj/project.pbxproj

@@ -241,6 +241,7 @@
 			developmentRegion = English;
 			hasScannedForEncodings = 0;
 			knownRegions = (
+				English,
 				en,
 			);
 			mainGroup = A790D68C1DCDF35F0060C52B;
@@ -365,6 +366,7 @@
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = macosx;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -415,6 +417,7 @@
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = macosx;
 				SWIFT_COMPILATION_MODE = wholemodule;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
@@ -425,7 +428,7 @@
 				MACOSX_DEPLOYMENT_TARGET = 10.11;
 				PRODUCT_NAME = poet;
 				SWIFT_SWIFT3_OBJC_INFERENCE = On;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -436,7 +439,7 @@
 				MACOSX_DEPLOYMENT_TARGET = 10.11;
 				PRODUCT_NAME = poet;
 				SWIFT_SWIFT3_OBJC_INFERENCE = On;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
@@ -460,7 +463,7 @@
 				PRODUCT_NAME = POEditorAPI;
 				SKIP_INSTALL = YES;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 5.0;
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
 			};
@@ -486,7 +489,7 @@
 				PRODUCT_NAME = POEditorAPI;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 5.0;
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
 			};
@@ -512,7 +515,7 @@
 				SDKROOT = iphoneos;
 				SKIP_INSTALL = YES;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
@@ -539,7 +542,7 @@
 				SDKROOT = iphoneos;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VALIDATE_PRODUCT = YES;
 				VERSIONING_SYSTEM = "apple-generic";

Tool/Source/Translation.swift

@@ -67,30 +67,31 @@ extension Collection where Iterator.Element == Translation
 			switch transUnit.translated
 			{
 				case .hasDefinition(let translation):
-					translatedTerm = translation
+                    translatedTerm = translation
 
 				case .hasPlurals(let plurals):
 					translatedTerm = plurals["other"]
 
 				case .notTranslated:
 					continue
 			}
-			
-			if !tmpStr.isEmpty
-			{
+            // escape double quotes to be safe
+            let cleanTranslation = translatedTerm.replacingOccurrences(of: "\n", with: "\\n").replacingOccurrences(of: "\"", with: "\\\"")
+            
+            if cleanTranslation.isEmpty {
+                continue
+            }
+            
+			if !tmpStr.isEmpty {
 				tmpStr += "\n"
 			}
 
-			if let note = transUnit.comment, !note.isEmpty
-			{
+			if let note = transUnit.comment, !note.isEmpty {
 				let noteWithLinebreaks = note.replacingOccurrences(of: "\\n", with: "\n", options: [], range: nil)
 				tmpStr += "/* \(noteWithLinebreaks) */\n"
 			}
-
-			// escape double quotes to be safe
-			let cleanTranslation = translatedTerm.replacingOccurrences(of: "\n", with: "\\n").replacingOccurrences(of: "\"", with: "\\\"")
-			
-			tmpStr += "\"\(transUnit.term)\" = \"\(cleanTranslation)\";\n"
+		
+            tmpStr += "\"\(transUnit.term)\" = \"\(cleanTranslation)\";\n"
 		}
 
 		let outputName = justName + ".strings"