Added missing txt metadata module

ebook_converter/ebooks/metadata/txt.py

@@ -0,0 +1,41 @@
+# -*- coding: utf-8 -*-
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+__license__   = 'GPL v3'
+__copyright__ = '2009, John Schember <john@nachtimwald.com>'
+
+'''
+Read meta information from TXT files
+'''
+
+import re, os
+
+from ebook_converter.ebooks.metadata import MetaInformation
+
+
+def get_metadata(stream, extract_cover=True):
+    '''
+    Return metadata as a L{MetaInfo} object
+    '''
+    name = getattr(stream, 'name', '').rpartition('.')[0]
+    if name:
+        name = os.path.basename(name)
+    mi = MetaInformation(name or _('Unknown'), [_('Unknown')])
+    stream.seek(0)
+
+    mdata = ''
+    for x in range(0, 4):
+        line = stream.readline().decode('utf-8', 'replace')
+        if not line:
+            break
+        else:
+            mdata += line
+
+    mdata = mdata[:1024]
+
+    mo = re.search('(?u)^[ ]*(?P<title>.+)[ ]*(\n{3}|(\r\n){3}|\r{3})[ ]*(?P<author>.+)[ ]*(\n|\r\n|\r)$', mdata)
+    if mo is not None:
+        mi.title = mo.group('title')
+        mi.authors = mo.group('author').split(',')
+
+    return mi