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 #
###################
python类SafeData()的实例源码
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 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))
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 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))
