Python mime.get_for_file函数代码示例

def is_file_encrypted(filepath):
    if DISABLE_SECURITY is True:
        return False

    filepath = filepath.replace('file://', '')
    mimebook = mime.get_for_file(filepath)
    return (mimebook == 'application/x-ceibal')

 def create_journal_entry(self,  widget,  data=None):
     filename = self._filechooser.get_filename()
     journal_entry = datastore.create()
     journal_entry.metadata['title'] = self.make_new_filename(filename)
     journal_entry.metadata['title_set_by_user'] = '1'
     journal_entry.metadata['keep'] = '0'
     file_mimetype = mime.get_for_file(filename)
     if not file_mimetype is None:
         journal_entry.metadata['mime_type'] = file_mimetype
     journal_entry.metadata['buddies'] = ''
     if file_mimetype.startswith('image/')  and file_mimetype != 'image/vnd.djvu':
         preview = self.create_preview_metadata(filename)
     elif file_mimetype  == 'application/x-cbz':
         fname = self.extract_image(filename)
         preview = self.create_preview_metadata(fname)
         os.remove(fname)
     else:
         preview = ''
     if not preview  == '':
         journal_entry.metadata['preview'] =  dbus.ByteArray(preview)
     else:
         journal_entry.metadata['preview'] =  ''
         
     journal_entry.file_path = filename
     datastore.write(journal_entry)
     self.update_log_entries += '\n' + _('File %s copied to the Journal.') % filename
     self.alert(_('Success'),  _('%s added to Journal.') 
                 % self.make_new_filename(filename))

    def __add_cover_response_cb(self, alert, response_id, operation_function):
        if response_id == Gtk.ResponseType.YES:
            try:
                chooser = ObjectChooser(self, what_filter='Image',
                                        filter_type=FILTER_TYPE_GENERIC_MIME,
                                        show_preview=True)
            except:
                # for compatibility with older versions
                chooser = ObjectChooser(self, what_filter='Image')

            try:
                result = chooser.run()
                if result == Gtk.ResponseType.ACCEPT:
                    logging.error('ObjectChooser: %r' %
                                  chooser.get_selected_object())
                    jobject = chooser.get_selected_object()
                    if jobject and jobject.file_path:
                        logging.error("imagen seleccionada: %s",
                                      jobject.file_path)
                        mime_type = mime.get_for_file(jobject.file_path)
                        extension = mime.get_primary_extension(mime_type)
                        tempfile_name = \
                            os.path.join(
                                self.get_activity_root(), 'instance',
                                'tmp%i.%s' % (time.time(), extension))
                        os.link(jobject.file_path, tempfile_name)
                        operation_function(tempfile_name)
            finally:
                chooser.destroy()
                del chooser

        elif response_id == Gtk.ResponseType.NO:
            self._save_epub()
        self.remove_alert(alert)

    def load_file(self, jobject, title=None):
        if isinstance(jobject, datastore.RawObject):
            logging.debug('Loading a datastore.RawObject')
            file_path = mime_path = jobject.file_path
            title = jobject.metadata['title']
        elif isinstance(jobject, datastore.DSObject):
            # This file is stored in the Journal (datastore)
            logging.debug('Loading a datastore.DSObject')
            file_path = 'journal://' + jobject.object_id
            mime_path = datastore.get(jobject.object_id).file_path
            title = jobject.metadata['title']
        else:
            logging.debug('Loading a %s', type(jobject))
            file_path = mime_path = jobject

        mimetype = mime.get_for_file('file://' + mime_path)
        logging.info('read_file mime %s', mimetype)
        if mimetype == 'audio/x-mpegurl':
            # is a M3U playlist:
            self._load_m3u_playlist(file_path)
        else:
            # is not a M3U playlist
            self._load_stream(file_path, title)

        missing_tracks = self._get_missing_tracks()
        if len(missing_tracks) > 0:
            logging.info('%s tracks not found', len(missing_tracks))
            self.emit('missing-tracks', missing_tracks)

        # set the focus in the first row
        self._set_cursor(0)

    def _copy_to_journal(self):
        formats = self._cb_object.get_formats().keys()
        most_significant_mime_type = mime.choose_most_significant(formats)
        format_ = self._cb_object.get_formats()[most_significant_mime_type]

        transfer_ownership = False
        if most_significant_mime_type == 'text/uri-list':
            uri = format_.get_data()
            if uri.startswith('file://'):
                parsed_url = urlparse.urlparse(uri)
                file_path = parsed_url.path  # pylint: disable=E1101
                transfer_ownership = False
                mime_type = mime.get_for_file(file_path)
            else:
                file_path = self._write_to_temp_file(format_.get_data())
                transfer_ownership = True
                mime_type = 'text/uri-list'
        else:
            if format_.is_on_disk():
                parsed_url = urlparse.urlparse(format_.get_data())
                file_path = parsed_url.path  # pylint: disable=E1101
                transfer_ownership = False
                mime_type = mime.get_for_file(file_path)
            else:
                file_path = self._write_to_temp_file(format_.get_data())
                transfer_ownership = True
                sniffed_mime_type = mime.get_for_file(file_path)
                if sniffed_mime_type == 'application/octet-stream':
                    mime_type = most_significant_mime_type
                else:
                    mime_type = sniffed_mime_type

        jobject = datastore.create()
        jobject.metadata['title'] = self._cb_object.get_name()
        jobject.metadata['keep'] = '0'
        jobject.metadata['buddies'] = ''
        jobject.metadata['preview'] = ''
        settings = Gio.Settings('org.sugarlabs.user')
        color = settings.get_string('color')
        jobject.metadata['icon-color'] = color
        jobject.metadata['mime_type'] = mime_type
        jobject.file_path = file_path

        datastore.write(jobject, transfer_ownership=transfer_ownership)

        return jobject

    def _copy_to_journal(self):
        formats = self._cb_object.get_formats().keys()
        most_significant_mime_type = mime.choose_most_significant(formats)
        format_ = self._cb_object.get_formats()[most_significant_mime_type]

        transfer_ownership = False
        if most_significant_mime_type == 'text/uri-list':
            uris = mime.split_uri_list(format_.get_data())
            if len(uris) == 1 and uris[0].startswith('file://'):
                parsed_url = urlparse.urlparse(uris[0])
                file_path = parsed_url.path  # pylint: disable=E1101
                transfer_ownership = False
                mime_type = mime.get_for_file(file_path)
            else:
                file_path = self._write_to_temp_file(format_.get_data())
                transfer_ownership = True
                mime_type = 'text/uri-list'
        else:
            if format_.is_on_disk():
                parsed_url = urlparse.urlparse(format_.get_data())
                file_path = parsed_url.path  # pylint: disable=E1101
                transfer_ownership = False
                mime_type = mime.get_for_file(file_path)
            else:
                file_path = self._write_to_temp_file(format_.get_data())
                transfer_ownership = True
                sniffed_mime_type = mime.get_for_file(file_path)
                if sniffed_mime_type == 'application/octet-stream':
                    mime_type = most_significant_mime_type
                else:
                    mime_type = sniffed_mime_type

        jobject = datastore.create()
        jobject.metadata['title'] = self._cb_object.get_name()
        jobject.metadata['keep'] = '0'
        jobject.metadata['buddies'] = ''
        jobject.metadata['preview'] = ''
        client = GConf.Client.get_default()
        color = client.get_string('/desktop/sugar/user/color')
        jobject.metadata['icon-color'] = color
        jobject.metadata['mime_type'] = mime_type
        jobject.file_path = file_path

        datastore.write(jobject, transfer_ownership=transfer_ownership)

        return jobject

    def create_preview_metadata(self,  filename):

        file_mimetype = mime.get_for_file(filename)
        if not file_mimetype.startswith('image/'):
            return ''
            
        scaled_pixbuf = GdkPixbuf.Pixbuf.new_from_file_at_size(filename,
                                                              style.zoom(320), style.zoom(240))
        preview_data = []

        succes, preview_data = scaled_pixbuf.save_to_bufferv('png', [], [])
        preview_data = ''.join(preview_data)

        return preview_data

    def __player_error_cb(self, widget, message, detail):
        self.player.stop()
        self.control.set_disabled()

        logging.error('ERROR MESSAGE: %s', message)
        logging.error('ERROR DETAIL: %s', detail)

        file_path = self.playlist_widget._items[
            self.playlist_widget.get_current_playing()]['path']
        mimetype = mime.get_for_file(file_path)

        title = _('Error')
        msg = _('This "%s" file can\'t be played') % mimetype
        self._switch_canvas(False)
        self._show_error_alert(title, msg)

    def _copy_file(self, original_uri):
        uri = urlparse.urlparse(original_uri)
        path = uri.path  # pylint: disable=E1101
        directory_, file_name = os.path.split(path)

        root, ext = os.path.splitext(file_name)
        if not ext or ext == '.':
            mime_type = mime.get_for_file(path)
            ext = '.' + mime.get_primary_extension(mime_type)

        f_, new_file_path = tempfile.mkstemp(ext, root)
        del f_
        shutil.copyfile(path, new_file_path)
        os.chmod(new_file_path, 0644)

        return 'file://' + new_file_path

 def _guess_mime(self, file_name):
     logging.error('_guess_mime %s', file_name)
     mime_type = None
     if file_name.endswith('.html') or file_name.endswith('.htm'):
         mime_type = 'application/xhtml+xml'
     elif file_name.endswith('.css'):
         mime_type = 'text/css'
     elif file_name.endswith('.png'):
         mime_type = 'image/png'
     elif file_name.endswith('.jpg') or file_name.endswith('.jpeg'):
         mime_type = 'image/jpeg'
     elif file_name.endswith('.gif'):
         mime_type = 'image/gif'
     if mime is None:
         mime_type = mime.get_for_file(file_name)
     return mime_type

    def __friend_selected_cb(self, menu_item, buddy):
        logging.debug("__friend_selected_cb")
        file_name = model.get_file(self._metadata["uid"])

        if not file_name or not os.path.exists(file_name):
            logging.warn("Entries without a file cannot be sent.")
            self.emit("volume-error", _("Entries without a file cannot be sent."), _("Warning"))
            return

        title = str(self._metadata["title"])
        description = str(self._metadata.get("description", ""))
        mime_type = str(self._metadata["mime_type"])

        if not mime_type:
            mime_type = mime.get_for_file(file_name)

        filetransfer.start_transfer(buddy, file_name, title, description, mime_type)

 def update_preview_cb(self, file_chooser, preview):
     filename = file_chooser.get_preview_filename()
     try:
         file_mimetype = mime.get_for_file(filename)
         if file_mimetype  == 'application/x-cbz' or file_mimetype == 'application/zip':
             fname = self.extract_image(filename)
             pixbuf = GdkPixbuf.Pixbuf.new_from_file_at_size(fname, 
                 style.zoom(320), style.zoom(240))
             preview.set_from_pixbuf(pixbuf)
             have_preview = True
             os.remove(fname)
         else:
             have_preview = False
     except:
         have_preview = False
     file_chooser.set_preview_widget_active(have_preview)
     return

    def _set_file_path(self, file_path):
        self._file_path = file_path

        if self._file_path is None:
            self._show_no_file()
            return

        mime_type = mime.get_for_file(self._file_path)
        if 'image/' in mime_type:
            self._show_image_viewer(image=True)
        elif 'audio/' in mime_type:
            self._show_image_viewer(icon='audio-x-generic')
        elif 'video/' in mime_type:
            self._show_image_viewer(icon='video-x-generic')
        else:
            response = self._show_text_viewer()
            if not response:
                self._show_image_viewer(icon='application-x-generic')

    def get_mime_type(self):
        if not self._formats:
            return ''

        format_ = mime.choose_most_significant(self._formats.keys())
        if format_ == 'text/uri-list':
            data = self._formats['text/uri-list'].get_data()
            uri = urlparse.urlparse(mime.split_uri_list(data)[0], 'file')
            scheme = uri.scheme  # pylint: disable=E1101
            if scheme == 'file':
                path = uri.path  # pylint: disable=E1101
                if os.path.exists(path):
                    format_ = mime.get_for_file(path)
                else:
                    format_ = mime.get_from_file_name(path)
                logging.debug('Chose %r!', format_)

        return format_

    def __keep_in_journal_cb(self, menu_item):
        mime_type = mime.get_from_file_name(self._document_path)
        if mime_type == 'application/octet-stream':
            mime_type = mime.get_for_file(self._document_path)

        self._jobject = datastore.create()
        title = _('Source') + ': ' + self._title
        self._jobject.metadata['title'] = title
        self._jobject.metadata['keep'] = '0'
        self._jobject.metadata['buddies'] = ''
        self._jobject.metadata['preview'] = ''
        self._jobject.metadata['icon-color'] = self._color
        self._jobject.metadata['mime_type'] = mime_type
        self._jobject.metadata['source'] = '1'
        self._jobject.file_path = self._document_path
        datastore.write(self._jobject, transfer_ownership=True,
                        reply_handler=self.__internal_save_cb,
                        error_handler=self.__internal_save_error_cb)