From af96a07010d53babfecdb516733f4419ed893699 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Diego=20Elio=20Petten=C3=B2?= <flameeyes@flameeyes.eu>
Date: Mon, 15 Feb 2016 20:39:55 +0000
Subject: otultra2: make the before/after meal constants in common module.

This will lead the way to providing meal information with future drivers.
---
 glucometerutils/common.py           | 7 ++++++-
 glucometerutils/drivers/otultra2.py | 6 +++---
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/glucometerutils/common.py b/glucometerutils/common.py
index a9968c2..32402a6 100644
--- a/glucometerutils/common.py
+++ b/glucometerutils/common.py
@@ -16,6 +16,11 @@ UNIT_MMOLL = 'mmol/L'
 
 VALID_UNITS = [UNIT_MGDL, UNIT_MMOLL]
 
+# Constants for meal information
+NO_MEAL = ''
+BEFORE_MEAL = 'Before Meal'
+AFTER_MEAL = 'After Meal'
+
 # Constants for date format
 DATETIME_12HR = '12 hours'
 DATETIME_24HR = '24 hours'
@@ -54,7 +59,7 @@ _ReadingBase = collections.namedtuple(
   '_ReadingBase', ['timestamp', 'value', 'meal', 'comment'])
 
 class Reading(_ReadingBase):
-  def __new__(cls, timestamp, value, meal='', comment=''):
+  def __new__(cls, timestamp, value, meal=NO_MEAL, comment=''):
     """Constructor for the reading object.
 
     Args:
diff --git a/glucometerutils/drivers/otultra2.py b/glucometerutils/drivers/otultra2.py
index f44450a..b72c4eb 100644
--- a/glucometerutils/drivers/otultra2.py
+++ b/glucometerutils/drivers/otultra2.py
@@ -17,9 +17,9 @@ from glucometerutils.drivers import lifescan_common
 
 # The following two hashes are taken directly from LifeScan's documentation
 _MEAL_CODES = {
-  'N': '',
-  'B': 'Before Meal',
-  'A': 'After Meal',
+  'N': common.NO_MEAL,
+  'B': common.BEFORE_MEAL,
+  'A': common.AFTER_MEAL,
 }
 
 _COMMENT_CODES = {
-- 
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