third_party/waf/waflib/extras/package.py

   1 #! /usr/bin/env python
   2 # encoding: utf-8
   3 # Thomas Nagy, 2011
   4
   5 """
   6 Obtain packages, unpack them in a location, and add associated uselib variables
   7 (CFLAGS_pkgname, LIBPATH_pkgname, etc).
   8
   9 The default is use a Dependencies.txt file in the source directory.
  10
  11 This is a work in progress.
  12
  13 Usage:
  14
  15 def options(opt):
  16         opt.load('package')
  17
  18 def configure(conf):
  19         conf.load_packages()
  20 """
  21
  22 from waflib import Logs
  23 from waflib.Configure import conf
  24
  25 try:
  26         from urllib import request
  27 except ImportError:
  28         from urllib import urlopen
  29 else:
  30         urlopen = request.urlopen
  31
  32
  33 CACHEVAR = 'WAFCACHE_PACKAGE'
  34
  35 @conf
  36 def get_package_cache_dir(self):
  37         cache = None
  38         if CACHEVAR in conf.environ:
  39                 cache = conf.environ[CACHEVAR]
  40                 cache = self.root.make_node(cache)
  41         elif self.env[CACHEVAR]:
  42                 cache = self.env[CACHEVAR]
  43                 cache = self.root.make_node(cache)
  44         else:
  45                 cache = self.srcnode.make_node('.wafcache_package')
  46         cache.mkdir()
  47         return cache
  48
  49 @conf
  50 def download_archive(self, src, dst):
  51         for x in self.env.PACKAGE_REPO:
  52                 url = '/'.join((x, src))
  53                 try:
  54                         web = urlopen(url)
  55                         try:
  56                                 if web.getcode() != 200:
  57                                         continue
  58                         except AttributeError:
  59                                 pass
  60                 except Exception:
  61                         # on python3 urlopen throws an exception
  62                         # python 2.3 does not have getcode and throws an exception to fail
  63                         continue
  64                 else:
  65                         tmp = self.root.make_node(dst)
  66                         tmp.write(web.read())
  67                         Logs.warn('Downloaded %s from %s' % (tmp.abspath(), url))
  68                         break
  69         else:
  70                 self.fatal('Could not get the package %s' % src)
  71
  72 @conf
  73 def load_packages(self):
  74         self.get_package_cache_dir()
  75         # read the dependencies, get the archives, ..