| # Copyright 2013 The Chromium Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| """A Resource is a file and its various associated canonical names.""" |
| |
| import codecs |
| import os |
| |
| class Resource(object): |
| """Represents a file found via a path search.""" |
| def __init__(self, toplevel_dir, absolute_path, binary=False): |
| self.toplevel_dir = toplevel_dir |
| self.absolute_path = absolute_path |
| self._contents = None |
| self._binary = binary |
| |
| @property |
| def relative_path(self): |
| """The path to the file from the top-level directory""" |
| return os.path.relpath(self.absolute_path, self.toplevel_dir) |
| |
| @property |
| def unix_style_relative_path(self): |
| return self.relative_path.replace(os.sep, '/') |
| |
| @property |
| def name(self): |
| """The dotted name for this resource based on its relative path.""" |
| return self.name_from_relative_path(self.relative_path) |
| |
| @staticmethod |
| def name_from_relative_path(relative_path): |
| dirname = os.path.dirname(relative_path) |
| basename = os.path.basename(relative_path) |
| modname = os.path.splitext(basename)[0] |
| if len(dirname): |
| name = dirname.replace(os.path.sep, '.') + '.' + modname |
| else: |
| name = modname |
| return name |
| |
| @property |
| def contents(self): |
| if self._contents: |
| return self._contents |
| if not os.path.exists(self.absolute_path): |
| raise Exception('%s not found.' % self.absolute_path) |
| if self._binary: |
| f = open(self.absolute_path, mode='rb') |
| else: |
| f = codecs.open(self.absolute_path, mode='r', encoding='utf-8') |
| self._contents = f.read() |
| f.close() |
| return self._contents |
