Add file references to po translation files. (#718)

godot_only/update_translations.gd

@@ -28,11 +28,44 @@ const delimiters = {
 	'TranslationServer.translate_plural("""': '""")',
 }
 
-var strings: PackedStringArray = PackedStringArray(["translation-credits"])
+var messages: Array[Message] = [Message.new("translation-credits")]
+
+
+class Message:
+	var refs: Array[MsgRef]
+	var msgid := String()
+
+	func _init(p_msgid: String, ref := MsgRef.new("", 0)):
+		msgid = p_msgid
+		if not ref.is_empty():
+			refs.append(ref)
+
+	func _to_string() -> String:
+		var ret := "\n"
+		for ref in refs:
+			ret += "#: %s\n" % ref
+		return ret + 'msgid "%s"\nmsgstr ""\n' % msgid
+
+
+class MsgRef:
+	var path := String()
+	var line := 0
+
+	func _init(p_path: String, p_line: int):
+		path = p_path
+		line = p_line
+
+	func is_empty():
+		return path.is_empty()
+
+	func _to_string():
+		return path + ":%d" % line
+
 
 func _run() -> void:
-	search_directory(ProjectSettings.globalize_path("src"))
-	update_translations()
+	if not OS.execute("msgmerge", PackedStringArray()) == -1:
+		search_directory(ProjectSettings.globalize_path("src"))
+		update_translations()
 
 
 func search_directory(dir: String) -> void:
@@ -50,34 +83,51 @@ func search_directory(dir: String) -> void:
 					break
 
 				var string_start := cursor + start_delim.length()
+				var line := file_text.count("\n", 0, string_start) + 1
 				cursor = file_text.find(end_delim, cursor)
-				var string := file_text.substr(string_start, cursor - string_start)
-				if not string in strings:
-					strings.append(string)
+
+				var msgid := file_text.substr(string_start, cursor - string_start)
+				var ref := MsgRef.new(dir.path_join(file_name), line)
+
+				var already_exists := false
+				for msg in messages:
+					if msg.msgid == msgid:
+						already_exists = true
+						msg.refs.append(ref)
+						break
+				if not already_exists:
+					messages.append(Message.new(msgid, ref))
+
 
 func update_translations() -> void:
 	var location := ProjectSettings.globalize_path("translations/GodSVG.pot")
 	var fa := FileAccess.open(location, FileAccess.WRITE)
 	fa.store_string(HEADER)
 
-	for string in strings:
-		fa.store_string('\nmsgid "%s"\nmsgstr ""\n' % string)
+	for msg in messages:
+		fa.store_string(msg.to_string())
 	fa = null
-	print("Created translations/GodSVG.pot with %d strings" % (strings.size() + 1))
+	print("Created translations/GodSVG.pot with %d strings" % (messages.size() + 1))
 
 	var files := DirAccess.get_files_at(ProjectSettings.globalize_path("translations"))
 	for file in files:
-		if file.get_extension() != "po":
+		if not file.get_extension() == "po" and file != "GodSVG.pot":
 			continue
 
-		var args := PackedStringArray(["--update", "--quiet", "--verbose", "--backup=off",
-				ProjectSettings.globalize_path("translations").path_join(file), location])
+		var args := PackedStringArray([
+			"--update",
+			"--quiet",
+			"--verbose",
+			"--backup=off",
+			ProjectSettings.globalize_path("translations").path_join(file),
+			location
+		])
 		var output := []
 		var result := OS.execute("msgmerge", args, output, true)
-		if result == -1:
-			print("msgmerge failed.")
-		else:
-			if not output.is_empty():
+		if not result == -1:
+			if file == "GodSVG.pot":
+				continue
+			elif not output.is_empty():
 				print("Updated translations/%s: %s" % [file, output[0].rstrip("\n")])
 			else:
 				print("Updated translations%s" % file)