Viewing file: autohandler.py (1.84 KB) -rw-r--r-- Select action/file-type: (+) | (+) | (+) | Code (+) | Session (+) | (+) | SDB (+) | (+) | (+) | (+) | (+) | (+) |
# ext/autohandler.py # Copyright 2006-2022 the Mako authors and contributors <see AUTHORS file> # # This module is part of Mako and is released under # the MIT License: http://www.opensource.org/licenses/mit-license.php
"""adds autohandler functionality to Mako templates.
requires that the TemplateLookup class is used with templates.
usage::
<%! from mako.ext.autohandler import autohandler %> <%inherit file="${autohandler(template, context)}"/>
or with custom autohandler filename::
<%! from mako.ext.autohandler import autohandler %> <%inherit file="${autohandler(template, context, name='somefilename')}"/>
"""
import os import posixpath import re
def autohandler(template, context, name="autohandler"): lookup = context.lookup _template_uri = template.module._template_uri if not lookup.filesystem_checks: try: return lookup._uri_cache[(autohandler, _template_uri, name)] except KeyError: pass
tokens = re.findall(r"([^/]+)", posixpath.dirname(_template_uri)) + [name] while len(tokens): path = "/" + "/".join(tokens) if path != _template_uri and _file_exists(lookup, path): if not lookup.filesystem_checks: return lookup._uri_cache.setdefault( (autohandler, _template_uri, name), path ) else: return path if len(tokens) == 1: break tokens[-2:] = [name]
if not lookup.filesystem_checks: return lookup._uri_cache.setdefault( (autohandler, _template_uri, name), None ) else: return None
def _file_exists(lookup, path): psub = re.sub(r"^/", "", path) for d in lookup.directories: if os.path.exists(d + "/" + psub): return True else: return False
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