[processing] small fix for non-ascii string (fixes #9175)

Author: slarosa

python/plugins/processing/gui/ScriptEditorDialog.py

@@ -26,6 +26,8 @@
 __revision__ = '$Format:%H$'
 
 import pickle
+import codecs
+import sys
 
 from PyQt4.QtCore import *
 from PyQt4.QtGui import *
@@ -152,12 +154,11 @@ def saveScript(self, saveAs):
             if self.alg is not None:
                 self.alg.script = text
             try:
-                fout = open(self.filename, 'w')
-                fout.write(text)
-                fout.close()
+                with codecs.open(self.filename, 'w', encoding='utf-8') as fout:
+                    fout.write(text)
             except IOError:
                 QMessageBox.warning(self, self.tr('I/O error'),
-                        self.tr('Unable to save edits. Reason:\n %1')
+                        self.tr('Unable to save edits. Reason:\n %s')
                         % unicode(sys.exc_info()[1]))
                 return
             self.update = True

python/plugins/processing/script/ScriptAlgorithm.py

@@ -254,7 +254,7 @@ def processAlgorithm(self, progress):
             out.setValue(ns[out.name])
 
     def helpFile(self):
-        helpfile = unicode(self.descriptionFile) + '.help'
+        helpfile = self.descriptionFile + '.help'
         if os.path.exists(helpfile):
             h2h = Help2Html()
             return h2h.getHtmlFile(self, helpfile)