From 15c2c2ee1066dd21e19446fc583f536d0992c16a Mon Sep 17 00:00:00 2001
From: Mike Crute <mcrute@gmail.com>
Date: Fri, 5 Feb 2010 17:47:52 -0500
Subject: Re-factoring parser to better seperate concerns of parsing tags.

---
 kronos/parser.py | 51 +++++++++++++++++++++++++++++++++------------------
 1 file changed, 33 insertions(+), 18 deletions(-)

diff --git a/kronos/parser.py b/kronos/parser.py
index cf848e0..29c7c03 100644
--- a/kronos/parser.py
+++ b/kronos/parser.py
@@ -11,30 +11,45 @@ from kronos.model import Activity
 
 
 def parse_activity(text):
-    tokens = text.split(' ')
-    tags = _parse_tags(tokens)
-    text = _strip_tags(tokens)
+    tag_parser = TagHandler(text)
+    text = tag_parser.text
 
-    description = None
-    if ',' in text:
-        text, description = text.split(',', 1)
-        description = description.strip()
-
-    category = None
-    if '@' in text:
-        text, category = text.split('@', 1)
-        category = category.strip()
+    text, description = _clean_split(text, ',')
+    text, category = _clean_split(text, '@')
 
     activity = Activity(text.strip(), description, category)
-    activity.tags = tags
+    activity.tags = tag_parser.tags
 
     return activity
 
 
-def _parse_tags(tokens):
-    return [token.lstrip('#') for token in tokens if token.startswith('#')]
+def _clean_split(text, delimiter):
+    if delimiter in text:
+        text, wanted = text.split(delimiter, 1)
+        return text, wanted.strip()
+    else:
+        return text, None
+
+
+class TagHandler(object):
+
+    def __init__(self, text):
+        self.tokens = text.split(' ')
+
+    def _parse_tags(self):
+        return [token.lstrip('#') for token in self.tokens
+                if token.startswith('#')]
+
+    def _strip_tags(self):
+        words = [token for token in self.tokens
+                    if not token.startswith('#')]
+
+        return ' '.join(words)
 
+    @property
+    def text(self):
+        return self._strip_tags()
 
-def _strip_tags(tokens):
-    words = [token for token in tokens if not token.startswith('#')]
-    return ' '.join(words)
+    @property
+    def tags(self):
+        return self._parse_tags()
-- 
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