Implement config editing for mercurial

Issue #511
Signed-off-by: Michal Čihař <michal@cihar.com>

weblate/trans/tests/test_vcs.py

@@ -259,7 +259,10 @@ class VCSHgTest(VCSGitTest):
         return
 
     def test_set_committer(self):
-        return
+        self.repo.set_committer('Foo Bar', 'foo@example.net')
+        self.assertEqual(
+            self.repo.get_config('ui', 'username'), 'Foo Bar <foo@example.net>'
+        )
 
     def test_revision(self):
         return

weblate/trans/vcs.py

@@ -24,6 +24,7 @@ import subprocess
 import os.path
 import email.utils
 import re
+import ConfigParser
 from dateutil import parser
 from weblate.trans.util import get_clean_env
 
@@ -550,10 +551,15 @@ class HgRepository(Repository):
     def set_config(self, section, key, value):
         """
         Set entry in local configuration.
-
-        TODO: Need to edit INI file
         """
-        self.execute(['config', section, key, value])
+        filename = os.path.join(self.path, '.hg', 'hgrc')
+        config = ConfigParser.RawConfigParser()
+        config.read(filename)
+        if not config.has_section(section):
+            config.add_section(section)
+        config.set(section, key, value)
+        with open(filename, 'w') as handle:
+            config.write(handle)
 
     def set_committer(self, name, mail):
         """