client/bin/os_dep.py

   1 import os
   2
   3 """
   4 One day, when this module grows up, it might actually try to fix things.
   5 'apt-cache search | apt-get install' ... or a less terrifying version of
   6 the same. With added distro-independant pixie dust.
   7 """
   8
   9 def command(cmd):
  10     # this could use '/usr/bin/which', I suppose. But this seems simpler
  11     for dir in os.environ['PATH'].split(':'):
  12         file = os.path.join(dir, cmd)
  13         if os.path.exists(file):
  14             return file
  15     raise ValueError('Missing command: %s' % cmd)
  16
  17
  18 def commands(*cmds):
  19     results = []
  20     for cmd in cmds:
  21         results.append(command(cmd))
  22
  23
  24 def library(lib):
  25     lddirs = [x.rstrip() for x in open('/etc/ld.so.conf', 'r').readlines()]
  26     for dir in ['/lib', '/usr/lib'] + lddirs:
  27         file = os.path.join(dir, lib)
  28         if os.path.exists(file):
  29             return file
  30     raise ValueError('Missing library: %s' % lib)
  31
  32
  33 def libraries(*libs):
  34     results = []
  35     for lib in libs:
  36         results.append(library(lib))