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+#! /usr/bin/env python
+# -*- coding: utf-8 -*-
+
+# Copyright 2014 Hamilton Kibbe <ham@hamiltonkib.be>
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+# http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+def read(filename):
+ """ Read a gerber or excellon file and return a representative object.
+
+ Parameters
+ ----------
+ filename : string
+ Filename of the file to read.
+
+ Returns
+ -------
+ file : CncFile subclass
+ CncFile object representing the file, either GerberFile or
+ ExcellonFile. Returns None if file is not an Excellon or Gerber file.
+ """
+ import rs274x
+ import excellon
+ from utils import detect_file_format
+ fmt = detect_file_format(filename)
+ if fmt == 'rs274x':
+ return rs274x.read(filename)
+ elif fmt == 'excellon':
+ return excellon.read(filename)
+ else:
+ return None