# Copyright 2015 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.

"""Utility functions for resolving file paths in histograms scripts."""

import os.path


def GetHistogramsFile():
  """Returns the path to histograms.xml.

  Prefer using this function instead of just open("histograms.xml"), so that
  scripts work properly even if run from outside the histograms directory.
  """
  return GetInputFile('tools/metrics/histograms/histograms.xml')


def GetInputFile(src_relative_file_path):
  """Converts a src/-relative file path into a path that can be opened."""
  depth = [os.path.dirname(__file__), '..', '..', '..']
  path = os.path.join(*(depth + src_relative_file_path.split('/')))
  return os.path.abspath(path)