lib/util.py

   1 import os
   2 import platform
   3 import sys
   4
   5 def print_error(*args):
   6     '''Print out the arguments to standard error'''
   7     for item in args:
   8       sys.stderr.write(str(item))
   9     sys.stderr.write("\n")
  10     sys.stderr.flush()
  11
  12 def appdata_dir():
  13     if platform.system() == "Windows":
  14         return os.path.join(os.environ["APPDATA"], "Electrum")
  15     elif platform.system() == "Linux":
  16         return os.path.join(sys.prefix, "share", "electrum")
  17     elif (platform.system() == "Darwin" or
  18           platform.system() == "DragonFly"):
  19         return "/Library/Application Support/Electrum"
  20     else:
  21         raise Exception("Unknown system")
  22
  23 def get_resource_path(*args):
  24     return os.path.join(".", *args)
  25
  26 def local_data_dir():
  27     assert sys.argv
  28     prefix_path = os.path.dirname(sys.argv[0])
  29     local_data = os.path.join(prefix_path, "data")
  30     return local_data
  31
  32 def load_theme_name(theme_path):
  33     try:
  34         with open(os.path.join(theme_path, "name.cfg")) as name_cfg_file:
  35             return name_cfg_file.read().rstrip("\n").strip()
  36     except IOError:
  37         return None
  38
  39 def theme_dirs_from_prefix(prefix):
  40     if not os.path.exists(prefix):
  41         return []
  42     theme_paths = {}
  43     for potential_theme in os.listdir(prefix):
  44         theme_full_path = os.path.join(prefix, potential_theme)
  45         theme_css = os.path.join(theme_full_path, "style.css")
  46         if not os.path.exists(theme_css):
  47             continue
  48         theme_name = load_theme_name(theme_full_path)
  49         if theme_name is None:
  50             continue
  51         theme_paths[theme_name] = prefix, potential_theme
  52     return theme_paths
  53
  54 def load_theme_paths():
  55     theme_paths = {}
  56     prefixes = (local_data_dir(), appdata_dir())
  57     for prefix in prefixes:
  58         theme_paths.update(theme_dirs_from_prefix(prefix))
  59     return theme_paths
  60