mojo/tools/mopy/paths.py

   1 # Copyright 2014 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 import os
   6
   7 from .config import Config
   8 from .gn import BuildDirectoryForConfig
   9
  10 class Paths(object):
  11   """Provides commonly used paths"""
  12
  13   def __init__(self, config=None, build_dir=None):
  14     """Specify either a config or a build_dir to generate paths to binary
  15     artifacts."""
  16     self.src_root = os.path.abspath(os.path.join(__file__,
  17       os.pardir, os.pardir, os.pardir, os.pardir))
  18     self.mojo_dir = os.path.join(self.src_root, "mojo")
  19
  20     if config:
  21       self.build_dir = BuildDirectoryForConfig(config, self.src_root)
  22     elif build_dir is not None:
  23       self.build_dir = os.path.abspath(build_dir)
  24     else:
  25       self.build_dir = None
  26
  27     if self.build_dir is not None:
  28       self.mojo_launcher_path = os.path.join(self.build_dir, "mojo_launcher")
  29       self.mojo_shell_path = os.path.join(self.build_dir, "mojo_shell")
  30       # TODO(vtl): Use the host OS here, since |config| may not be available.
  31       # In any case, if the target is Windows, but the host isn't, using
  32       # |os.path| isn't correct....
  33       if Config.GetHostOS() == Config.OS_WINDOWS:
  34         self.mojo_launcher_path += ".exe"
  35         self.mojo_shell_path += ".exe"
  36       if config and config.target_os == Config.OS_ANDROID:
  37         self.target_mojo_shell_path = os.path.join(self.build_dir,
  38                                                    "apks",
  39                                                    "MojoShell.apk")
  40       else:
  41         self.target_mojo_shell_path = self.mojo_shell_path
  42     else:
  43       self.mojo_launcher_path = None
  44       self.mojo_shell_path = None
  45       self.target_mojo_shell_path = None
  46
  47   def RelPath(self, path):
  48     """Returns the given path, relative to the current directory."""
  49     return os.path.relpath(path)
  50
  51   def SrcRelPath(self, path):
  52     """Returns the given path, relative to self.src_root."""
  53     return os.path.relpath(path, self.src_root)
  54
  55   def FileFromUrl(self, url):
  56     """Given an app URL (<scheme>:<appname>), return 'build_dir/appname.mojo'.
  57     If self.build_dir is None, just return appname.mojo
  58     """
  59     (_, name) = url.split(':')
  60     if self.build_dir:
  61       return os.path.join(self.build_dir, name + '.mojo')
  62     return name + '.mojo'
  63
  64   @staticmethod
  65   def IsValidAppUrl(url):
  66     """Returns False if url is malformed, True otherwise."""
  67     try:
  68       return len(url.split(':')) == 2
  69     except ValueError:
  70       return False