Add commandline option for logging on windows

Redirect all output to one log file or if -w is
provided do not redirect output

src/application.py

@@ -50,6 +50,10 @@ class GajimApplication(Gtk.Application):
                              GLib.OptionArg.NONE,
                              _('Print xml stanzas and other debug '
                                'information'))
+        self.add_main_option('windev', ord('w'), GLib.OptionFlags.NONE,
+                             GLib.OptionArg.NONE,
+                             _('Print stdout/stderr to the console '
+                               'on Windows'))
         self.add_main_option('profile', ord('p'), GLib.OptionFlags.NONE,
                              GLib.OptionArg.STRING,
                              _('Use defined profile in configuration '
@@ -119,26 +123,6 @@ class GajimApplication(Gtk.Application):
         #    libintl.bindtextdomain('gajim_plugins', plugins_locale_dir)
         #    libintl.bind_textdomain_codeset('gajim_plugins', 'UTF-8')
 
-            class MyStderr(object):
-                _file = None
-                _error = None
-                def write(self, text):
-                    fname = os.path.join(common.configpaths.gajimpaths.cache_root,
-                        os.path.split(sys.executable)[1]+'.log')
-                    if self._file is None and self._error is None:
-                        try:
-                            self._file = open(fname, 'a')
-                        except Exception as details:
-                            self._error = details
-                    if self._file is not None:
-                        self._file.write(text)
-                        self._file.flush()
-                def flush(self):
-                    if self._file is not None:
-                        self._file.flush()
-
-            sys.stderr = MyStderr()
-
         # PyGTK2.10+ only throws a warning
         warnings.filterwarnings('error', module='Gtk')
         try:

src/gajim.py

@@ -36,25 +36,48 @@
 ##
 
 import sys
+import os
 
 if '--version' in sys.argv or '-V' in sys.argv:
     from common.defs import version
     print(version)
     sys.exit(0)
 
-import os
-import warnings
+WINDEV = False
+if '--windev' in sys.argv or '-w' in sys.argv:
+    WINDEV = True
 
-if os.name == 'nt':
+if os.name == 'nt' and not WINDEV:
     log_path = os.path.join(os.environ['APPDATA'], 'Gajim')
     if not os.path.exists(log_path):
         os.mkdir(log_path, 0o700)
     log_file = os.path.join(log_path, 'gajim.log')
-    fout = open(log_file, 'a')
-    sys.stdout = fout
-    sys.stderr = fout
 
-    warnings.filterwarnings(action='ignore')
+    class MyStd(object):
+        _file = None
+        _error = None
+
+        def write(self, text):
+            if self._file is None and self._error is None:
+                try:
+                    self._file = open(log_file, 'a')
+                except Exception as details:
+                    self._error = details
+            if self._file is not None:
+                self._file.write(text)
+                self._file.flush()
+
+        def flush(self):
+            if self._file is not None:
+                self._file.flush()
+
+        def isatty(self):
+            return False
+
+    outerr = MyStd()
+    sys.stdout = outerr
+    sys.stderr = outerr
+
 
 # Test here for all required versions so we dont have to
 # test multiple times in every module. nbxmpp also needs GLib.