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| 1 # Copyright 2013 The Chromium Authors. All rights reserved. | |
| 2 # Use of this source code is governed by a BSD-style license that can be | |
| 3 # found in the LICENSE file. | |
| 4 | |
| 5 # Based on: | |
| 6 # http://src.chromium.org/viewvc/blink/trunk/Source/build/scripts/template_expan
der.py | |
| 7 | |
| 8 import imp | |
| 9 import inspect | |
| 10 import os.path | |
| 11 import sys | |
| 12 | |
| 13 # Disable lint check for finding modules: | |
| 14 # pylint: disable=F0401 | |
| 15 | |
| 16 def _GetDirAbove(dirname): | |
| 17 """Returns the directory "above" this file containing |dirname| (which must | |
| 18 also be "above" this file).""" | |
| 19 path = os.path.abspath(__file__) | |
| 20 while True: | |
| 21 path, tail = os.path.split(path) | |
| 22 assert tail | |
| 23 if tail == dirname: | |
| 24 return path | |
| 25 | |
| 26 try: | |
| 27 imp.find_module("jinja2") | |
| 28 except ImportError: | |
| 29 sys.path.append(os.path.join(_GetDirAbove("public"), "public/third_party")) | |
| 30 import jinja2 | |
| 31 | |
| 32 | |
| 33 def ApplyTemplate(mojo_generator, base_dir, path_to_template, params, | |
| 34 filters=None, **kwargs): | |
| 35 template_directory, template_name = os.path.split(path_to_template) | |
| 36 path_to_templates = os.path.join(base_dir, template_directory) | |
| 37 loader = jinja2.FileSystemLoader([path_to_templates]) | |
| 38 final_kwargs = dict(mojo_generator.GetJinjaParameters()) | |
| 39 final_kwargs.update(kwargs) | |
| 40 jinja_env = jinja2.Environment(loader=loader, keep_trailing_newline=True, | |
| 41 **final_kwargs) | |
| 42 jinja_env.globals.update(mojo_generator.GetGlobals()) | |
| 43 if filters: | |
| 44 jinja_env.filters.update(filters) | |
| 45 template = jinja_env.get_template(template_name) | |
| 46 return template.render(params) | |
| 47 | |
| 48 | |
| 49 def UseJinja(path_to_template, **kwargs): | |
| 50 # Get the directory of our caller's file. | |
| 51 base_dir = os.path.dirname(inspect.getfile(sys._getframe(1))) | |
| 52 def RealDecorator(generator): | |
| 53 def GeneratorInternal(*args, **kwargs2): | |
| 54 parameters = generator(*args, **kwargs2) | |
| 55 return ApplyTemplate(args[0], base_dir, path_to_template, parameters, | |
| 56 **kwargs) | |
| 57 GeneratorInternal.func_name = generator.func_name | |
| 58 return GeneratorInternal | |
| 59 return RealDecorator | |
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