MyMemory backend for machine translation

trans/machine/mymemory.py

+# -*- coding: utf-8 -*-
+#
+# Copyright © 2012 - 2013 Michal Čihař <michal@cihar.com>
+#
+# This file is part of Weblate <http://weblate.org/>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+import urllib
+from trans.machine.base import MachineTranslation
+
+
+class MyMemoryTranslation(MachineTranslation):
+    '''
+    MyMemory machine translation support.
+    '''
+    name = 'mymemory'
+    verbose = 'MyMemory'
+
+    def is_supported(self, language):
+        '''
+        Any language is supported.
+        '''
+        return True
+
+    def format_match(self, match):
+        '''
+        Reformats match to (translation, quality) tuple.
+        '''
+        if match['quality'].isdigit():
+            quality = int(match['quality'])
+        else:
+            quality = 0
+
+        return (
+            match['translation'],
+            quality * match['match']
+        )
+
+    def download_translations(self, language, text):
+        '''
+        Downloads and processes translations.
+        '''
+        args = urllib.urlencode({
+            'q': text,
+            'langpair': 'en|%s' % language,
+        })
+
+        response = self.json_req(
+            'http://mymemory.translated.net/api/get?' + args
+        )
+
+        return [self.format_match(match) for match in response['matches']]