| # Copyright (C) 2013 Google Inc. All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions are |
| # met: |
| # |
| # * Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # * Redistributions in binary form must reproduce the above |
| # copyright notice, this list of conditions and the following disclaimer |
| # in the documentation and/or other materials provided with the |
| # distribution. |
| # * Neither the name of Google Inc. nor the names of its |
| # contributors may be used to endorse or promote products derived from |
| # this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| import os |
| import sys |
| |
| import jinja2 |
| |
| |
| def apply_template(template_path, |
| params, |
| filters=None, |
| tests=None, |
| template_cache=None): |
| template = None |
| |
| if filters is None and tests is None and template_cache is not None: |
| template = template_cache.get(template_path, None) |
| |
| if template is None: |
| current_dir = os.path.dirname(os.path.realpath(__file__)) |
| jinja_env = jinja2.Environment( |
| loader=jinja2.FileSystemLoader(current_dir), |
| keep_trailing_newline=True, # newline-terminate generated files |
| lstrip_blocks=True, # so can indent control flow tags |
| trim_blocks=True) # so don't need {%- -%} everywhere |
| if filters: |
| jinja_env.filters.update(filters) |
| if tests: |
| jinja_env.tests.update(tests) |
| |
| template = jinja_env.get_template(template_path) |
| if filters is None and tests is None and template_cache is not None: |
| template_cache[template_path] = template |
| |
| params['template_file'] = template_path |
| return template.render(params) |
| |
| |
| def use_jinja(template_path, filters=None, tests=None, template_cache=None): |
| def real_decorator(generator): |
| def generator_internal(*args, **kwargs): |
| parameters = generator(*args, **kwargs) |
| return apply_template( |
| template_path, |
| parameters, |
| filters=filters, |
| tests=tests, |
| template_cache=template_cache) |
| |
| generator_internal.__name__ = generator.__name__ |
| return generator_internal |
| |
| return real_decorator |
