Merge branch 'master' of github.com:emkael/deal-convert

1 files changed, 5 insertions, 4 deletions

diff --git a/dealconvert/__init__.py b/dealconvert/__init__.py
index 1779976..3b5a8ba 100644
--- a/dealconvert/__init__.py
+++ b/dealconvert/__init__.py
@@ -1,17 +1,18 @@
 from .formats import *
 
 class DealConverter(object):
-    def __init__(self, input_file):
+    def __init__(self, input_file=None):
         self.input = input_file
         self.formats = {}
-        self.parser = self._detect_format(self.input)
+        if input_file is not None:
+            self.parser = self._detect_format(self.input)
 
     def output(self, output_files):
         deal_set = sorted(self.parser.parse(self.input), key=lambda d:d.number)
         for output in output_files:
             self._detect_format(output).output(output, deal_set)
 
-    def _detect_format(self, filename):
+    def detect_format(self, filename):
         for deal_format in globals()['formats'].__all__:
             if deal_format not in self.formats:
                 self.formats[deal_format] = getattr(
@@ -19,4 +20,4 @@ class DealConverter(object):
                     deal_format.upper() + 'Format')()
             if self.formats[deal_format].match_file(filename):
                 return self.formats[deal_format]
-        raise ValueError('Unrecognized file extension: %s' % filename)
+        raise RuntimeError('Unrecognized file extension: %s' % filename)