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"""Shared utilities for writing scripts for Google Test/Mock."""

__author__ = 'wan@google.com (Zhanyong Wan)'

import os

import re

# Matches the line from 'svn info .' output that describes what SVN

# path the current local directory corresponds to.  For example, in

# a googletest SVN workspace's trunk/test directory, the output will be:

#

# URL: https://googletest.googlecode.com/svn/trunk/test

_SVN_INFO_URL_RE = re.compile(r'^URL: https://(\w+)\.googlecode\.com/svn(.*)')

def GetCommandOutput(command):

  """Runs the shell command and returns its stdout as a list of lines."""

  f = os.popen(command, 'r')

  lines = [line.strip() for line in f.readlines()]

  f.close()

  return lines

def GetSvnInfo():

  """Returns the project name and the current SVN workspace's root path."""

  for line in GetCommandOutput('svn info .'):

    m = _SVN_INFO_URL_RE.match(line)

    if m:

      project = m.group(1)  # googletest or googlemock

      rel_path = m.group(2)

      root = os.path.realpath(rel_path.count('/') * '../')

      return project, root

  return None, None

def GetSvnTrunk():

  """Returns the current SVN workspace's trunk root path."""

  _, root = GetSvnInfo()

  return root + '/trunk' if root else None

def IsInGTestSvn():

  project, _ = GetSvnInfo()

  return project == 'googletest'

def IsInGMockSvn():

  project, _ = GetSvnInfo()

  return project == 'googlemock'