Possibility to change temporary path.

Add possibility to change temporary path on ARM devices if the ChromeOS image is too big.

Remember custom path (as setting), check specified custom path whether
there is enough space.

lib/inputstreamhelper/__init__.py

@@ -133,7 +133,11 @@ def _diskspace(cls):
     @classmethod
     def _temp_path(cls):
         ''' Return temporary path, usually ~/.kodi/userdata/addon_data/tmp '''
-        temp_path = os.path.join(ADDON_PROFILE, 'tmp')
+        cust_temp_dir = ADDON.getSetting('custom_temp_dir')
+        if xbmcvfs.exists(cust_temp_dir):
+            temp_path = os.path.join(cust_temp_dir, 'tmp')
+        else:
+            temp_path = os.path.join(ADDON_PROFILE, 'tmp')
         if not xbmcvfs.exists(temp_path):
             xbmcvfs.mkdir(temp_path)
 
@@ -226,6 +230,13 @@ def _cmd_exists(cmd):
         # https://stackoverflow.com/questions/377017/test-if-executable-exists-in-python
         return subprocess.call('type ' + cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE) == 0
 
+    def _update_temp_path(self, new_temp_path):
+        """"Updates temp_path and merges files."""
+        old_temp_path = self._temp_path()
+
+        ADDON.setSetting('custom_temp_dir', new_temp_path)
+        shutil.move(old_temp_path, new_temp_path)
+
     def _helper_disabled(self):
         """Return if inputstreamhelper has been disabled in settings.xml."""
         disabled = ADDON.getSetting('disabled')
@@ -637,10 +648,14 @@ def _install_widevine_arm(self):  # pylint: disable=too-many-statements
                 xbmcgui.Dialog().ok(localize(30004), localize(30019, os=system_os()))
                 return False
 
-            if required_diskspace >= self._diskspace():
-                xbmcgui.Dialog().ok(localize(30004),  # Not enough free disk space
-                                    localize(30018, diskspace=self._sizeof_fmt(required_diskspace)))
-                return False
+            while required_diskspace >= self._diskspace():
+                if xbmcgui.Dialog().yesno(localize(30004), localize(30055)): # not enough space, alternative path?
+                    self._update_temp_path(xbmcgui.Dialog().browseSingle(3, localize(30909), 'files')) # temporary path
+                    continue
+                else:
+                    xbmcgui.Dialog().ok(localize(30004),  # Not enough free disk space
+                                        localize(30018, diskspace=self._sizeof_fmt(required_diskspace)))
+                    return False
 
             if not self._cmd_exists('fdisk') and not self._cmd_exists('parted'):
                 xbmcgui.Dialog().ok(localize(30004), localize(30020, command1='fdisk', command2='parted'))  # Commands are missing

resources/language/resource.language.en_gb/strings.po

@@ -225,6 +225,9 @@ msgctxt "#30054"
 msgid "disabled"
 msgstr ""
 
+msgctxt "#30055"
+msgid "You do not have enough free disk space to install [B]Widevine CDM[/B] or your specified custom path does not exist anymore or hasn't got enough disk space either. Would you like to specify a (different) custom path to temporarily use for the Chrome OS Recovery Image (e.g. on a USB)?"
+msgstr ""
 
 ### INFORMATION DIALOG
 msgctxt "#30800"
@@ -297,3 +300,6 @@ msgctxt "#30907"
 msgid "Remove Widevine CDM library..."
 msgstr ""
 
+msgctxt "#30909"
+msgid "Custom Path"
+msgstr ""

resources/settings.xml

@@ -9,5 +9,6 @@
         <setting label="30904" type="text" enable="false"/> <!-- disabled_warning -->
         <setting label="30905" help="30906" type="action" id="install_widevine" action="RunScript(script.module.inputstreamhelper, widevine_install)" enable="eq(-2,false)" visible="!system.platform.android"/>
         <setting label="30907" help="30908" type="action" id="remove_widevine" action="RunScript(script.module.inputstreamhelper, widevine_remove)" enable="eq(-3,false)" visible="!system.platform.android"/>
+        <setting label="30909" type="folder" id="custom_temp_dir" source="" option="writeable"/>
     </category>
 </settings>

test/xbmcgui.py

@@ -44,6 +44,11 @@ def textviewer(heading, text=None, usemono=None):
         text = kodi_to_ansi(text)
         print('\033[37;100mTEXTVIEWER:\033[35;0m [%s]\n\033[35;0m%s\033[39;0m' % (heading, text))
 
+    @staticmethod
+    def browseSingle(atype, heading, shares, mask=None, useThumbs=None, treatAsFolder=None, default=None):
+        ''' A stub implementation for the xbmcgui Dialog class browseSingle() method '''
+        print('BROWSESINGLE: [%s] %s' % (atype, heading))
+        return '~/.kodi/userdata/addon_data/script.module.inputstreamhelper'
 
 class DialogProgress:
     ''' A reimplementation of the xbmcgui DialogProgress '''