From fb49dd439b905b92531eaaa592169b397572f0c1 Mon Sep 17 00:00:00 2001
From: James Casbon <james.casbon@popgentech.com>
Date: Tue, 17 Jan 2012 15:25:17 +0000
Subject: [PATCH] add filter lines, but writer needs improvement

---
 setup.py |  1 +
 vcf.py   | 19 +++++++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/setup.py b/setup.py
index 78566c2..ffb907f 100644
--- a/setup.py
+++ b/setup.py
@@ -20,6 +20,7 @@
     entry_points = {
         'vcf.filters': [
             'site_quality = vcf_filter:SiteQuality',
+            'vgq = vcf_filter:VariantGenotypeQuality',
         ]
     }
 )
diff --git a/vcf.py b/vcf.py
index 9dd2d6b..6908d16 100644
--- a/vcf.py
+++ b/vcf.py
@@ -530,6 +530,25 @@ def _stringify(self, x):
         return str(x)
 
 
+
+class Filter(object):
+    name = 'filter'
+    description = 'VCF filter base class'
+    short_name = 'f'
+
+    @classmethod
+    def customize_parser(self):
+        pass
+
+    def __init__(self, args):
+        pass
+
+    def __call__(self):
+        raise NotImplementedError('Filters must implement this method')
+
+
+
+
 def __update_readme():
     import sys
     file('README.rst', 'w').write(sys.modules[__name__].__doc__)