show notification if there is no space on the

device

src/common/optparser.py

@@ -18,6 +18,13 @@
 
 import os
 from common import gajim
+from common import i18n
+from gtk import glade
+i18n.init()
+_ = i18n._
+APP = i18n.APP
+glade.bindtextdomain(APP, i18n.DIR)
+glade.textdomain(APP)
 
 class OptionsParser:
 	def __init__(self, filename):
@@ -45,7 +52,7 @@ class OptionsParser:
 			fd = open(self.__filename)
 		except:
 			if os.path.exists(self.__filename):
-				print 'error: cannot open %s for reading\n' % (self.__filename)
+				print _('error: cannot open %s for reading\n') % (self.__filename)
 			return
 
 		for line in fd.readlines():
@@ -66,10 +73,30 @@ class OptionsParser:
 		fd.write(s + " = " + str(value[1]) + "\n")
 	
 	def write(self):
+		(base_dir, filename) = os.path.split(self.__filename)
+		self.__tempfile = os.path.join(base_dir, '.'+filename)
 		try:
-			fd = open(self.__filename, 'w')
+			fd = open(self.__tempfile, 'w')
 		except:
-			print 'error: cannot open %s for writing\n' % (self.__filename)
-			return
+			err_str = _('Unable to write file in %s\n') % (base_dir)
+			print err_str
+			return err_str
+		try:
 			gajim.config.foreach(self.write_line, fd)
+		except IOError, e:
+			print e, dir(e), e.errno
+			if e.errno == 28:
+				err_str = _('No space left on device.')
+			else:
+				err_str = e
+			print err_str
 			fd.close()
+			return err_str
+		fd.close()
+		try:
+			os.rename(self.__tempfile, self.__filename)
+		except:
+			err_str = _('Unable to open %s for writing\n') % (self.__filename)
+			return err_str
+		return None
+		

src/gajim.py

@@ -911,7 +911,11 @@ class Interface:
 		return False
 
 	def save_config(self):
-		parser.write()
+		err_str = parser.write()
+		if err_str is not None:
+			dialogs.ErrorDialog(_('Cannot save your preferences'), 
+				err_str).get_response()
+			sys.exit(2)
 
 	def enable_dbus(self):
 		if 'remote_control' not in globals():