1 files changed, 57 insertions, 0 deletions
diff --git a/catapult/common/py_vulcanize/py_vulcanize/resource.py b/catapult/common/py_vulcanize/py_vulcanize/resource.py
new file mode 100644
index 00000000..853dff94
--- /dev/null
+++ b/catapult/common/py_vulcanize/py_vulcanize/resource.py
@@ -0,0 +1,57 @@
+# 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