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# The MIT License (MIT)
#
# Copyright (c) 2007-2018 Einar Lielmanis, Liam Newman, and contributors.
#
# Permission is hereby granted, free of charge, to any person
# obtaining a copy of this software and associated documentation files
# (the "Software"), to deal in the Software without restriction,
# including without limitation the rights to use, copy, modify, merge,
# publish, distribute, sublicense, and/or sell copies of the Software,
# and to permit persons to whom the Software is furnished to do so,
# subject to the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
import copy
from ..core.pattern import Pattern
__all__ = ["TemplatablePattern"]
class TemplateNames:
def __init__(self):
self.django = False
self.erb = False
self.handlebars = False
self.php = False
self.smarty = False
self.angular = False
class TemplatePatterns:
def __init__(self, input_scanner):
pattern = Pattern(input_scanner)
self.handlebars_comment = pattern.starting_with(r"{{!--").until_after(r"--}}")
self.handlebars_unescaped = pattern.starting_with(r"{{{").until_after(r"}}}")
self.handlebars = pattern.starting_with(r"{{").until_after(r"}}")
self.php = pattern.starting_with(r"<\?(?:[= ]|php)").until_after(r"\?>")
self.erb = pattern.starting_with(r"<%[^%]").until_after(r"[^%]%>")
# django coflicts with handlebars a bit.
self.django = pattern.starting_with(r"{%").until_after(r"%}")
self.django_value = pattern.starting_with(r"{{").until_after(r"}}")
self.django_comment = pattern.starting_with(r"{#").until_after(r"#}")
self.smarty_value = pattern.starting_with(r"{(?=[^}{\s\n])").until_after(r"}")
self.smarty_comment = pattern.starting_with(r"{\*").until_after(r"\*}")
self.smarty_literal = pattern.starting_with(r"{literal}").until_after(
r"{/literal}"
)
class TemplatablePattern(Pattern):
def __init__(self, input_scanner, parent=None):
Pattern.__init__(self, input_scanner, parent)
self.__template_pattern = None
self._disabled = TemplateNames()
self._excluded = TemplateNames()
if parent is not None:
self.__template_pattern = self._input.get_regexp(parent.__template_pattern)
self._disabled = copy.copy(parent._disabled)
self._excluded = copy.copy(parent._excluded)
self.__patterns = TemplatePatterns(input_scanner)
def _create(self):
return TemplatablePattern(self._input, self)
def _update(self):
self.__set_templated_pattern()
def read_options(self, options):
result = self._create()
for language in ["django", "erb", "handlebars", "php", "smarty", "angular"]:
setattr(result._disabled, language, not (language in options.templating))
result._update()
return result
def disable(self, language):
result = self._create()
setattr(result._disabled, language, True)
result._update()
return result
def exclude(self, language):
result = self._create()
setattr(result._excluded, language, True)
result._update()
return result
def read(self):
result = ""
if bool(self._match_pattern):
result = self._input.read(self._starting_pattern)
else:
result = self._input.read(self._starting_pattern, self.__template_pattern)
next = self._read_template()
while bool(next):
if self._match_pattern is not None:
next += self._input.read(self._match_pattern)
else:
next += self._input.readUntil(self.__template_pattern)
result += next
next = self._read_template()
if self._until_after:
result += self._input.readUntilAfter(self._until_pattern)
return result
def __set_templated_pattern(self):
items = list()
if not self._disabled.php:
items.append(self.__patterns.php._starting_pattern.pattern)
if not self._disabled.handlebars:
items.append(self.__patterns.handlebars._starting_pattern.pattern)
if not self._disabled.erb:
items.append(self.__patterns.erb._starting_pattern.pattern)
if not self._disabled.django:
items.append(self.__patterns.django._starting_pattern.pattern)
# The starting pattern for django is more complex because it has different
# patterns for value, comment, and other sections
items.append(self.__patterns.django_value._starting_pattern.pattern)
items.append(self.__patterns.django_comment._starting_pattern.pattern)
if not self._disabled.smarty:
items.append(self.__patterns.smarty._starting_pattern.pattern)
if self._until_pattern:
items.append(self._until_pattern.pattern)
self.__template_pattern = self._input.get_regexp(r"(?:" + "|".join(items) + ")")
def _read_template(self):
resulting_string = ""
c = self._input.peek()
if c == "<":
peek1 = self._input.peek(1)
if not self._disabled.php and not self._excluded.php and peek1 == "?":
resulting_string = resulting_string or self.__patterns.php.read()
if not self._disabled.erb and not self._excluded.erb and peek1 == "%":
resulting_string = resulting_string or self.__patterns.erb.read()
elif c == "{":
if not self._disabled.handlebars and not self._excluded.handlebars:
resulting_string = (
resulting_string or self.__patterns.handlebars_comment.read()
)
resulting_string = (
resulting_string or self.__patterns.handlebars_unescaped.read()
)
resulting_string = resulting_string or self.__patterns.handlebars.read()
if not self._disabled.django:
# django coflicts with handlebars a bit.
if not self._excluded.django and not self._excluded.handlebars:
resulting_string = (
resulting_string or self.__patterns.django_value.read()
)
if not self._excluded.django:
resulting_string = (
resulting_string or self.__patterns.django_comment.read()
)
resulting_string = resulting_string or self.__patterns.django.read()
if not self._disabled.smarty:
# smarty cannot be enabled with django or handlebars enabled
if self._disabled.django and self._disabled.handlebars:
resulting_string = (
resulting_string or self.__patterns.smarty_comment.read()
)
resulting_string = (
resulting_string or self.__patterns.smarty_literal.read()
)
resulting_string = resulting_string or self.__patterns.smarty.read()
return resulting_string
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