Added txt related modules

ebook_converter/ebooks/txt/newlines.py

@@ -0,0 +1,32 @@
+# -*- coding: utf-8 -*-
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+__license__ = 'GPL 3'
+__copyright__ = '2009, John Schember <john@nachtimwald.com>'
+__docformat__ = 'restructuredtext en'
+
+import os
+
+
+class TxtNewlines(object):
+
+    NEWLINE_TYPES = {
+                        'system'  : os.linesep,
+                        'unix'    : '\n',
+                        'old_mac' : '\r',
+                        'windows' : '\r\n'
+                     }
+
+    def __init__(self, newline_type):
+        self.newline = self.NEWLINE_TYPES.get(newline_type.lower(), os.linesep)
+
+
+def specified_newlines(newline, text):
+    # Convert all newlines to \n
+    text = text.replace('\r\n', '\n')
+    text = text.replace('\r', '\n')
+
+    if newline == '\n':
+        return text
+
+    return text.replace('\n', newline)