mirror of
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147 lines
4.3 KiB
Python
147 lines
4.3 KiB
Python
# -*- coding: utf-8 -*-
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"""
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jinja2.exceptions
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~~~~~~~~~~~~~~~~~
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Jinja exceptions.
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:copyright: (c) 2010 by the Jinja Team.
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:license: BSD, see LICENSE for more details.
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"""
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from jinja2._compat import imap, text_type, PY2, implements_to_string
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class TemplateError(Exception):
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"""Baseclass for all template errors."""
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if PY2:
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def __init__(self, message=None):
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if message is not None:
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message = text_type(message).encode('utf-8')
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Exception.__init__(self, message)
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@property
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def message(self):
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if self.args:
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message = self.args[0]
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if message is not None:
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return message.decode('utf-8', 'replace')
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def __unicode__(self):
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return self.message or u''
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else:
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def __init__(self, message=None):
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Exception.__init__(self, message)
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@property
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def message(self):
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if self.args:
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message = self.args[0]
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if message is not None:
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return message
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@implements_to_string
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class TemplateNotFound(IOError, LookupError, TemplateError):
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"""Raised if a template does not exist."""
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# looks weird, but removes the warning descriptor that just
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# bogusly warns us about message being deprecated
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message = None
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def __init__(self, name, message=None):
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IOError.__init__(self)
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if message is None:
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message = name
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self.message = message
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self.name = name
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self.templates = [name]
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def __str__(self):
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return self.message
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class TemplatesNotFound(TemplateNotFound):
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"""Like :class:`TemplateNotFound` but raised if multiple templates
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are selected. This is a subclass of :class:`TemplateNotFound`
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exception, so just catching the base exception will catch both.
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.. versionadded:: 2.2
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"""
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def __init__(self, names=(), message=None):
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if message is None:
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message = u'none of the templates given were found: ' + \
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u', '.join(imap(text_type, names))
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TemplateNotFound.__init__(self, names and names[-1] or None, message)
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self.templates = list(names)
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@implements_to_string
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class TemplateSyntaxError(TemplateError):
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"""Raised to tell the user that there is a problem with the template."""
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def __init__(self, message, lineno, name=None, filename=None):
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TemplateError.__init__(self, message)
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self.lineno = lineno
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self.name = name
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self.filename = filename
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self.source = None
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# this is set to True if the debug.translate_syntax_error
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# function translated the syntax error into a new traceback
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self.translated = False
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def __str__(self):
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# for translated errors we only return the message
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if self.translated:
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return self.message
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# otherwise attach some stuff
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location = 'line %d' % self.lineno
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name = self.filename or self.name
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if name:
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location = 'File "%s", %s' % (name, location)
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lines = [self.message, ' ' + location]
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# if the source is set, add the line to the output
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if self.source is not None:
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try:
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line = self.source.splitlines()[self.lineno - 1]
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except IndexError:
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line = None
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if line:
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lines.append(' ' + line.strip())
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return u'\n'.join(lines)
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class TemplateAssertionError(TemplateSyntaxError):
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"""Like a template syntax error, but covers cases where something in the
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template caused an error at compile time that wasn't necessarily caused
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by a syntax error. However it's a direct subclass of
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:exc:`TemplateSyntaxError` and has the same attributes.
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"""
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class TemplateRuntimeError(TemplateError):
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"""A generic runtime error in the template engine. Under some situations
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Jinja may raise this exception.
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"""
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class UndefinedError(TemplateRuntimeError):
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"""Raised if a template tries to operate on :class:`Undefined`."""
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class SecurityError(TemplateRuntimeError):
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"""Raised if a template tries to do something insecure if the
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sandbox is enabled.
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"""
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class FilterArgumentError(TemplateRuntimeError):
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"""This error is raised if a filter was called with inappropriate
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arguments
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"""
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