1 files changed, 39 insertions, 0 deletions
diff --git a/share/extensions/barcode/Upca.py b/share/extensions/barcode/Upca.py
new file mode 100644
index 0000000..77cb415
--- /dev/null
+++ b/share/extensions/barcode/Upca.py
@@ -0,0 +1,39 @@
+# coding=utf-8
+#
+# Copyright (C) 2007 Martin Owens
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA.
+#
+"""
+Python barcode renderer for UPCA barcodes. Designed for use with Inkscape.
+"""
+
+from .BaseEan import EanBarcode
+
+
+class Upca(EanBarcode):
+    """Provides a renderer for EAN12 aka UPC-A Barcodes"""
+    name = 'upca'
+    font_size = 10
+    lengths = [11]
+    checks = [12]
+
+    def _encode(self, num, guide=False):
+        """Encode for a UPC-A Barcode"""
+        self.text = self.space(num[0:1], 3, num[1:6], 4, num[6:11], 3, num[11:])
+        return self.enclose(
+                self.encode_left(num[0:6]),
+                self.encode_right(num[6:12]),
+        )