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+#
+# BSD 3-Clause License
+#
+# Copyright (c) 2018, Oleg Malyavkin
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# * Redistributions of source code must retain the above copyright notice, this
+#   list of conditions and the following disclaimer.
+#
+# * Redistributions in binary form must reproduce the above copyright notice,
+#   this list of conditions and the following disclaimer in the documentation
+#   and/or other materials provided with the distribution.
+#
+# * Neither the name of the copyright holder nor the names of its
+#   contributors may be used to endorse or promote products derived from
+#   this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+extends SceneTree
+
+var Parser = preload("res://addons/protobuf/parser.gd")
+var Util = preload("res://addons/protobuf/protobuf_util.gd")
+
+func error(msg : String):
+        push_error(msg)
+        quit()
+
+func _init():
+        var arguments = {}
+        for argument in OS.get_cmdline_args():
+                if argument.find("=") > -1:
+                        var key_value = argument.split("=")
+                        arguments[key_value[0].lstrip("--")] = key_value[1]
+
+        if !arguments.has("input") || !arguments.has("output"):
+                error("Expected 2 Parameters: input and output")
+
+        var input_file_name = arguments["input"]
+        var output_file_name = arguments["output"]
+
+        var file = FileAccess.open(input_file_name, FileAccess.READ)
+        if file == null:
+                error("File: '" + input_file_name + "' not found.")
+
+        var parser = Parser.new()
+
+        if parser.work(Util.extract_dir(input_file_name), Util.extract_filename(input_file_name), \
+                output_file_name, "res://addons/protobuf/protobuf_core.gd"):
+                print("Compiled '", input_file_name, "' to '", output_file_name, "'.")
+        else:
+                error("Compilation failed.")
+
+        quit()