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# -*- coding: utf-8 -*-
"""
jinja2.exceptions
~~~~~~~~~~~~~~~~~
Jinja exceptions.
:copyright: 2008 by Armin Ronacher.
:license: BSD, see LICENSE for more details.
"""
class TemplateError(Exception):
"""Baseclass for all template errors."""
class TemplateNotFound(IOError, LookupError, TemplateError):
"""Raised if a template does not exist."""
def __init__(self, name):
IOError.__init__(self, name)
self.name = name
class TemplateSyntaxError(TemplateError):
"""Raised to tell the user that there is a problem with the template."""
def __init__(self, message, lineno, name=None, filename=None):
if not isinstance(message, unicode):
message = message.decode('utf-8', 'replace')
TemplateError.__init__(self, message.encode('utf-8'))
self.lineno = lineno
self.name = name
self.filename = filename
self.source = None
self.message = message
def __unicode__(self):
location = 'line %d' % self.lineno
name = self.filename or self.name
if name:
location = 'File "%s", %s' % (name, location)
lines = [self.message, ' ' + location]
# if the source is set, add the line to the output
if self.source is not None:
try:
line = self.source.splitlines()[self.lineno - 1]
except IndexError:
line = None
if line:
lines.append(' ' + line.strip())
return u'\n'.join(lines)
def __str__(self):
return unicode(self).encode('utf-8')
class TemplateAssertionError(TemplateSyntaxError):
"""Like a template syntax error, but covers cases where something in the
template caused an error at compile time that wasn't necessarily caused
by a syntax error. However it's a direct subclass of
:exc:`TemplateSyntaxError` and has the same attributes.
"""
class TemplateRuntimeError(TemplateError):
"""A generic runtime error in the template engine. Under some situations
Jinja may raise this exception.
"""
class UndefinedError(TemplateRuntimeError):
"""Raised if a template tries to operate on :class:`Undefined`."""
class SecurityError(TemplateRuntimeError):
"""Raised if a template tries to do something insecure if the
sandbox is enabled.
"""
class FilterArgumentError(TemplateRuntimeError):
"""This error is raised if a filter was called with inappropriate
arguments
"""
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