python类SafeData()的实例源码

def render(self, context):
        self.filter_expression.var.translate = not self.noop
        if self.message_context:
            self.filter_expression.var.message_context = (
                self.message_context.resolve(context))
        output = self.filter_expression.resolve(context)

        value = render_value_in_context(output, context)

        # Restore percent signs. Percent signs in template text are doubled
        # so they are not interpreted as string format flags.
        is_safe = isinstance(value, SafeData)
        value = value.replace('%%', '%')
        value = systemtext(value, group=self.group, default=self.default)
        value = mark_safe(value) if is_safe else value
        if self.asvar:
            context[self.asvar] = value
            return ''
        else:
            return value

def render(self, context):
        self.filter_expression.var.translate = not self.noop
        if self.message_context:
            self.filter_expression.var.message_context = (
                self.message_context.resolve(context))
        output = self.filter_expression.resolve(context)
        value = render_value_in_context(output, context)
        # Restore percent signs. Percent signs in template text are doubled
        # so they are not interpreted as string format flags.
        is_safe = isinstance(value, SafeData)
        value = value.replace('%%', '%')
        value = mark_safe(value) if is_safe else value
        if self.asvar:
            context[self.asvar] = value
            return ''
        else:
            return value

def render(self, context):
        self.filter_expression.var.translate = not self.noop
        if self.message_context:
            self.filter_expression.var.message_context = (
                self.message_context.resolve(context))
        output = self.filter_expression.resolve(context)
        value = render_value_in_context(output, context)
        # Restore percent signs. Percent signs in template text are doubled
        # so they are not interpreted as string format flags.
        is_safe = isinstance(value, SafeData)
        value = value.replace('%%', '%')
        value = mark_safe(value) if is_safe else value
        if self.asvar:
            context[self.asvar] = value
            return ''
        else:
            return value

def render(self, context):
        self.filter_expression.var.translate = not self.noop
        if self.message_context:
            self.filter_expression.var.message_context = (
                self.message_context.resolve(context))
        output = self.filter_expression.resolve(context)
        value = render_value_in_context(output, context)
        # Restore percent signs. Percent signs in template text are doubled
        # so they are not interpreted as string format flags.
        is_safe = isinstance(value, SafeData)
        value = value.replace('%%', '%')
        value = mark_safe(value) if is_safe else value
        if self.asvar:
            context[self.asvar] = value
            return ''
        else:
            return value

def test_safedata(self):
        """
        Tests that a message containing SafeData is keeping its safe status when
        retrieved from the message storage.
        """
        def encode_decode(data):
            message = Message(constants.DEBUG, data)
            encoded = storage._encode(message)
            decoded = storage._decode(encoded)
            return decoded.message

        storage = self.get_storage()

        self.assertIsInstance(
            encode_decode(mark_safe("<b>Hello Django!</b>")), SafeData)
        self.assertNotIsInstance(
            encode_decode("<b>Hello Django!</b>"), SafeData)

def render(self, context):
        self.filter_expression.var.translate = not self.noop
        if self.message_context:
            self.filter_expression.var.message_context = (
                self.message_context.resolve(context))
        output = self.filter_expression.resolve(context)
        value = render_value_in_context(output, context)
        # Restore percent signs. Percent signs in template text are doubled
        # so they are not interpreted as string format flags.
        is_safe = isinstance(value, SafeData)
        value = value.replace('%%', '%')
        value = mark_safe(value) if is_safe else value
        if self.asvar:
            context[self.asvar] = value
            return ''
        else:
            return value

def render(self, context):
        try:
            output = self.filter_expression.resolve(context)
            output = template_localtime(output, use_tz=context.use_tz)
            output = localize(output, use_l10n=context.use_l10n)
            output = force_text(output)
        except UnicodeDecodeError:
            return ''
        except Exception as e:
            if not hasattr(e, 'django_template_source'):
                e.django_template_source = self.source
            raise
        if (context.autoescape and not isinstance(output, SafeData)) or isinstance(output, EscapeData):
            return conditional_escape(output)
        else:
            return output

def default(self, obj):
        if isinstance(obj, Message):
            # Using 0/1 here instead of False/True to produce more compact json
            is_safedata = 1 if isinstance(obj.message, SafeData) else 0
            message = [self.message_key, is_safedata, obj.level, obj.message]
            if obj.extra_tags:
                message.append(obj.extra_tags)
            return message
        return super(MessageEncoder, self).default(obj)

def stringfilter(func):
    """
    Decorator for filters which should only receive unicode objects. The object
    passed as the first positional argument will be converted to a unicode
    object.
    """
    def _dec(*args, **kwargs):
        if args:
            args = list(args)
            args[0] = force_text(args[0])
            if (isinstance(args[0], SafeData) and
                    getattr(_dec._decorated_function, 'is_safe', False)):
                return mark_safe(func(*args, **kwargs))
        return func(*args, **kwargs)

    # Include a reference to the real function (used to check original
    # arguments by the template parser, and to bear the 'is_safe' attribute
    # when multiple decorators are applied).
    _dec._decorated_function = getattr(func, '_decorated_function', func)

    return wraps(func)(_dec)


###################
# STRINGS         #
###################

def linenumbers(value, autoescape=True):
    """Displays text with line numbers."""
    lines = value.split('\n')
    # Find the maximum width of the line count, for use with zero padding
    # string format command
    width = six.text_type(len(six.text_type(len(lines))))
    if not autoescape or isinstance(value, SafeData):
        for i, line in enumerate(lines):
            lines[i] = ("%0" + width + "d. %s") % (i + 1, line)
    else:
        for i, line in enumerate(lines):
            lines[i] = ("%0" + width + "d. %s") % (i + 1, escape(line))
    return mark_safe('\n'.join(lines))

def cut(value, arg):
    """
    Removes all values of arg from the given string.
    """
    safe = isinstance(value, SafeData)
    value = value.replace(arg, '')
    if safe and arg != ';':
        return mark_safe(value)
    return value


###################
# HTML STRINGS    #
###################

def linebreaks_filter(value, autoescape=True):
    """
    Replaces line breaks in plain text with appropriate HTML; a single
    newline becomes an HTML line break (``<br />``) and a new line
    followed by a blank line becomes a paragraph break (``</p>``).
    """
    autoescape = autoescape and not isinstance(value, SafeData)
    return mark_safe(linebreaks(value, autoescape))

def do_translate(message, translation_function):
    """
    Translates 'message' using the given 'translation_function' name -- which
    will be either gettext or ugettext. It uses the current thread to find the
    translation object to use. If no current translation is activated, the
    message will be run through the default translation object.
    """
    global _default

    # str() is allowing a bytestring message to remain bytestring on Python 2
    eol_message = message.replace(str('\r\n'), str('\n')).replace(str('\r'), str('\n'))

    if len(eol_message) == 0:
        # Returns an empty value of the corresponding type if an empty message
        # is given, instead of metadata, which is the default gettext behavior.
        result = type(message)("")
    else:
        _default = _default or translation(settings.LANGUAGE_CODE)
        translation_object = getattr(_active, "value", _default)

        result = getattr(translation_object, translation_function)(eol_message)

    if isinstance(message, SafeData):
        return mark_safe(result)

    return result

def conditional_escape(text):
    """
    Similar to escape(), except that it doesn't operate on pre-escaped strings.

    This function relies on the __html__ convention used both by Django's
    SafeData class and by third-party libraries like markupsafe.
    """
    if hasattr(text, '__html__'):
        return text.__html__()
    else:
        return escape(text)

def default(self, obj):
        if isinstance(obj, Message):
            # Using 0/1 here instead of False/True to produce more compact json
            is_safedata = 1 if isinstance(obj.message, SafeData) else 0
            message = [self.message_key, is_safedata, obj.level, obj.message]
            if obj.extra_tags:
                message.append(obj.extra_tags)
            return message
        return super(MessageEncoder, self).default(obj)

def default(self, obj):
        if isinstance(obj, Message):
            # Using 0/1 here instead of False/True to produce more compact json
            is_safedata = 1 if isinstance(obj.message, SafeData) else 0
            message = [self.message_key, is_safedata, obj.level, obj.message]
            if obj.extra_tags:
                message.append(obj.extra_tags)
            return message
        return super(MessageEncoder, self).default(obj)

def django_filter_to_jinja2(filter_func):
    """
    Note: Due to the way this function is used by
    ``coffin.template.Library``, it needs to be able to handle native
    Jinja2 filters and pass them through unmodified. This necessity
    stems from the fact that it is not always possible to determine
    the type of a filter.

    TODO: Django's "func.is_safe" is not yet handled
    """
    def _convert_out(v):
        if isinstance(v, SafeData):
            return Markup(v)
        if isinstance(v, EscapeData):
            return Markup.escape(v)       # not 100% equivalent, see mod docs
        return v
    def _convert_in(v):
        if isinstance(v, Undefined):
            # Essentially the TEMPLATE_STRING_IF_INVALID default
            # setting. If a non-default is set, Django wouldn't apply
            # filters. This is something that we neither can nor want to
            # simulate in Jinja.
            return ''
        return v
    def conversion_wrapper(value, *args, **kwargs):
        result = filter_func(_convert_in(value), *args, **kwargs)
        return _convert_out(result)
    # Jinja2 supports a similar machanism to Django's
    # ``needs_autoescape`` filters: environment filters. We can
    # thus support Django filters that use it in Jinja2 with just
    # a little bit of argument rewriting.
    if hasattr(filter_func, 'needs_autoescape'):
        @environmentfilter
        def autoescape_wrapper(environment, *args, **kwargs):
            kwargs['autoescape'] = environment.autoescape
            return conversion_wrapper(*args, **kwargs)
        return autoescape_wrapper
    else:
        return conversion_wrapper

def test_render_safe_html(self):
        html = self.widget.render('honeypot_field', '')
        self.assertIsInstance(html, SafeData)

def test_render_return_html(self):
        html = self.widget.render('captcha', '1234')

        self.assertIsInstance(html, SafeData)

def blog(value, autoescape=True):
    """[spam]ham[end]????????????HTML???????.

    >>> blog('[filter html]<h1>Hello</h1>[end]')
    '<h1>Hello</h1>'

    >>> blog('[filter html]<h1>Hello</h1>[end]\
    [filter url]https://torina.top[end]')

    '<h1>Hello</h1><a target="_blank" rel="nofollow" \
    href="https://torina.top" rel="nofollow">https://torina.top</a>'

    """
    autoescape = autoescape and not isinstance(value, SafeData)
    if autoescape:
        value = escape(value)
    filters = re.finditer(r'\[filter (?P<tag_name>.*?)\].*?\[end\]', value)
    results = []
    for f in filters:
        filter_name = f.group('tag_name')
        origin_text = f.group()
        filter_function = globals().get(filter_name)
        if filter_function and callable(filter_function):
            result_text = filter_function(origin_text)
        else:
            result_text = origin_text
        results.append((origin_text, result_text))

    for origin_text, result_text in results:
        if origin_text != result_text:
            value = value.replace(origin_text, result_text)

    return mark_safe(value)

def default(self, obj):
        if isinstance(obj, Message):
            # Using 0/1 here instead of False/True to produce more compact json
            is_safedata = 1 if isinstance(obj.message, SafeData) else 0
            message = [self.message_key, is_safedata, obj.level, obj.message]
            if obj.extra_tags:
                message.append(obj.extra_tags)
            return message
        return super(MessageEncoder, self).default(obj)

def default(self, obj):
        if isinstance(obj, Message):
            # Using 0/1 here instead of False/True to produce more compact json
            is_safedata = 1 if isinstance(obj.message, SafeData) else 0
            message = [self.message_key, is_safedata, obj.level, obj.message]
            if obj.extra_tags:
                message.append(obj.extra_tags)
            return message
        return super(MessageEncoder, self).default(obj)

def default(self, obj):
        if isinstance(obj, Message):
            # Using 0/1 here instead of False/True to produce more compact json
            is_safedata = 1 if isinstance(obj.message, SafeData) else 0
            message = [self.message_key, is_safedata, obj.level, obj.message]
            if obj.extra_tags:
                message.append(obj.extra_tags)
            return message
        return super(MessageEncoder, self).default(obj)

def default(self, obj):
        if isinstance(obj, Message):
            # Using 0/1 here instead of False/True to produce more compact json
            is_safedata = 1 if isinstance(obj.message, SafeData) else 0
            message = [self.message_key, is_safedata, obj.level, obj.message]
            if obj.extra_tags:
                message.append(obj.extra_tags)
            return message
        return super(MessageEncoder, self).default(obj)

def default(self, obj):
        if isinstance(obj, Message):
            # Using 0/1 here instead of False/True to produce more compact json
            is_safedata = 1 if isinstance(obj.message, SafeData) else 0
            message = [self.message_key, is_safedata, obj.level, obj.message]
            if obj.extra_tags:
                message.append(obj.extra_tags)
            return message
        return super(MessageEncoder, self).default(obj)

def default(self, obj):
        if isinstance(obj, Message):
            # Using 0/1 here instead of False/True to produce more compact json
            is_safedata = 1 if isinstance(obj.message, SafeData) else 0
            message = [self.message_key, is_safedata, obj.level, obj.message]
            if obj.extra_tags:
                message.append(obj.extra_tags)
            return message
        return super(MessageEncoder, self).default(obj)

def default(self, obj):
        if isinstance(obj, Message):
            # Using 0/1 here instead of False/True to produce more compact json
            is_safedata = 1 if isinstance(obj.message, SafeData) else 0
            message = [self.message_key, is_safedata, obj.level, obj.message]
            if obj.extra_tags:
                message.append(obj.extra_tags)
            return message
        return super(MessageEncoder, self).default(obj)

def default(self, obj):
        if isinstance(obj, Message):
            # Using 0/1 here instead of False/True to produce more compact json
            is_safedata = 1 if isinstance(obj.message, SafeData) else 0
            message = [self.message_key, is_safedata, obj.level, obj.message]
            if obj.extra_tags:
                message.append(obj.extra_tags)
            return message
        return super(MessageEncoder, self).default(obj)

def stringfilter(func):
    """
    Decorator for filters which should only receive unicode objects. The object
    passed as the first positional argument will be converted to a unicode
    object.
    """
    def _dec(*args, **kwargs):
        if args:
            args = list(args)
            args[0] = force_text(args[0])
            if (isinstance(args[0], SafeData) and
                    getattr(_dec._decorated_function, 'is_safe', False)):
                return mark_safe(func(*args, **kwargs))
        return func(*args, **kwargs)

    # Include a reference to the real function (used to check original
    # arguments by the template parser, and to bear the 'is_safe' attribute
    # when multiple decorators are applied).
    _dec._decorated_function = getattr(func, '_decorated_function', func)

    return wraps(func)(_dec)


###################
# STRINGS         #
###################

def linenumbers(value, autoescape=True):
    """Displays text with line numbers."""
    lines = value.split('\n')
    # Find the maximum width of the line count, for use with zero padding
    # string format command
    width = six.text_type(len(six.text_type(len(lines))))
    if not autoescape or isinstance(value, SafeData):
        for i, line in enumerate(lines):
            lines[i] = ("%0" + width + "d. %s") % (i + 1, line)
    else:
        for i, line in enumerate(lines):
            lines[i] = ("%0" + width + "d. %s") % (i + 1, escape(line))
    return mark_safe('\n'.join(lines))