def get_template_info(source, context_lines=3):
line = 0
upto = 0
source_lines = []
before = during = after = ""
origin, (start, end) = source
template_source = origin.reload()
for num, next in enumerate(linebreak_iter(template_source)):
if start >= upto and end <= next:
line = num
before = template_source[upto:start]
during = template_source[start:end]
after = template_source[end:next]
source_lines.append((num, template_source[upto:next]))
upto = next
top = max(1, line - context_lines)
bottom = min(len(source_lines), line + 1 + context_lines)
context = []
for num, content in source_lines[top:bottom]:
context.append({
'num': num,
'content': content,
'highlight': (num == line),
})
return {
'name': origin.name,
'context': context,
}
def get_template_exception_info(self):
template_source, start, end, name = self._template
context_lines = 10
line = 0
upto = 0
source_lines = []
before = during = after = ""
for num, next in enumerate(linebreak_iter(template_source)):
if start >= upto and end <= next:
line = num
before = escape(template_source[upto:start])
during = escape(template_source[start:end])
after = escape(template_source[end:next])
source_lines.append( (num, escape(template_source[upto:next])) )
upto = next
total = len(source_lines)
top = max(1, line - context_lines)
bottom = min(total, line + 1 + context_lines)
self.template_info = {
'message': self.exc_value.args[0],
'source_lines': source_lines[top:bottom],
'before': before,
'during': during,
'after': after,
'top': top,
'bottom': bottom,
'total': total,
'line': line,
'name': name,
}
def get_template_info(source, context_lines=3):
line = 0
upto = 0
source_lines = []
# before = during = after = ""
origin, (start, end) = source
template_source = origin.reload()
for num, next in enumerate(linebreak_iter(template_source)):
if start >= upto and end <= next:
line = num
# before = template_source[upto:start]
# during = template_source[start:end]
# after = template_source[end:next]
source_lines.append((num, template_source[upto:next]))
upto = next
top = max(1, line - context_lines)
bottom = min(len(source_lines), line + 1 + context_lines)
context = []
for num, content in source_lines[top:bottom]:
context.append({
'num': num,
'content': content,
'highlight': (num == line),
})
return {
'name': origin.name,
'context': context,
}
def get_template_exception_info(self):
template_source, start, end, name = self._template
context_lines = 10
line = 0
upto = 0
source_lines = []
before = during = after = ""
for num, next in enumerate(linebreak_iter(template_source)):
if start >= upto and end <= next:
line = num
before = escape(template_source[upto:start])
during = escape(template_source[start:end])
after = escape(template_source[end:next])
source_lines.append((num, escape(template_source[upto:next])))
upto = next
total = len(source_lines)
top = max(1, line - context_lines)
bottom = min(total, line + 1 + context_lines)
self.template_info = {
'message': self.exc_value.args[0],
'source_lines': source_lines[top:bottom],
'before': before,
'during': during,
'after': after,
'top': top,
'bottom': bottom,
'total': total,
'line': line,
'name': name,
}
def _get_template_exception_info(self, exception):
origin, (start, end) = exception.source
template_source = origin.reload()
upto = line = 0
for num, next in enumerate(debug.linebreak_iter(template_source)):
if start >= upto and end <= next:
line = num
upto = next
return line
def _generate_django_exception(e, source=None):
'''Generate a Django exception from a Jinja exception'''
from django.views.debug import linebreak_iter
import re
if source:
exception = DjangoTemplateSyntaxError(e.message)
exception_dict = e.__dict__
del exception_dict['source']
# Fetch the entire template in a string
template_string = source[0].reload()
# Get the line number from the error message, if available
match = re.match('.* at (\d+)$', e.message)
start_index = 0
stop_index = 0
if match:
# Convert the position found in the stacktrace to a position
# the Django template debug system can use
position = int(match.group(1)) + source[1][0] + 1
for index in linebreak_iter(template_string):
if index >= position:
stop_index = min(index, position + 3)
start_index = min(index, position - 2)
break
start_index = index
else:
# So there wasn't a matching error message, in that case we
# simply have to highlight the entire line instead of the specific
# words
ignore_lines = -1
for i, index in enumerate(linebreak_iter(template_string)):
if source[1][0] > index:
ignore_lines += 1
if i - ignore_lines == e.lineno:
stop_index = index
break
start_index = index
# Convert the positions to a source that is compatible with the
# Django template debugger
source = source[0], (
start_index,
stop_index,
)
else:
# No source available so we let Django fetch it for us
lineno = e.lineno - 1
template_string, source = django_loader.find_template_source(e.name)
exception = DjangoTemplateSyntaxError(e.message)
# Find the positions by the line number given in the exception
start_index = 0
for i in range(lineno):
start_index = template_string.index('\n', start_index + 1)
source = source, (
start_index + 1,
template_string.index('\n', start_index + 1) + 1,
)
# Set our custom source as source for the exception so the Django
# template debugger can use it
exception.source = source
return exception
