bin/dependencies_b.py

   1 # this is separate to allow us to use python 2.5 syntax without
   2 # the dependency checker breaking on earlier versions.
   3
   4 import sys
   5 import subprocess
   6 import os
   7
   8 def fail(*message):
   9   print >>sys.stderr, "\n".join(message)
  10   sys.exit(1)
  11
  12 def warn(*message):
  13   print >>sys.stderr, "warning:", "\nwarning: ".join(message), "\n"
  14
  15 def check_dependencies():
  16   i = 0
  17
  18   check_zope()
  19   check_twisted()
  20   check_win32()
  21   i+=check_autobahn()
  22   i+=check_json()
  23   i+=check_java()
  24   i+=check_git()
  25
  26   print "0 errors, %d warnings." % i
  27
  28   if i == 0:
  29     print "looks like you've got everything you need to run qwebirc!"
  30   else:
  31     print "you can run qwebirc despite these."
  32
  33   f = open(".checked", "w")
  34   f.close()
  35
  36 def check_win32():
  37   if not sys.platform.startswith("win"):
  38     return
  39
  40   try:
  41     import win32con
  42   except ImportError:
  43     fail("qwebirc requires pywin32, see:", "http://sourceforge.net/project/showfiles.php?group_id=78018")
  44
  45 def check_java():
  46   def java_warn(specific):
  47     warn(specific, "java is not required, but allows qwebirc to compress output,", "making it faster to download.", "you can get java at http://www.java.com/")
  48
  49   try:
  50     p = subprocess.Popen(["java", "-version"], stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=os.name == "nt")
  51     p.communicate()
  52     if p.wait() != 0:
  53       java_warn("something went wrong looking for java.")
  54       return 1
  55   except: # ugh
  56     java_warn("couldn't find java.")
  57     return 1
  58
  59   return 0
  60
  61 def check_git():
  62   def git_warn(specific):
  63     warn(specific, "git is not required, but allows qwebirc to save bandwidth by versioning.")
  64
  65   try:
  66     p = subprocess.Popen(["git", "rev-parse", "HEAD"], stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=os.name == "nt")
  67     p.communicate()
  68     if p.wait() != 0:
  69       git_warn("something went wrong looking for git.")
  70       return 1
  71   except: # ugh
  72     git_warn("couldn't find git.")
  73     return 1
  74
  75   return 0
  76
  77 def check_zope():
  78   try:
  79     from zope.interface import Interface
  80   except ImportError:
  81     if sys.platform.startswith("win"):
  82       fail("qwebirc requires zope interface",
  83            "see pypi: http://pypi.python.org/pypi/zope.interface")
  84     else:
  85       fail("qwebirc requires zope interface.",
  86            "this should normally come with twisted, but can be downloaded",
  87            "from pypi: http://pypi.python.org/pypi/zope.interface")
  88
  89 def check_twisted():
  90   try:
  91     import twisted
  92   except ImportError:
  93     fail("qwebirc requires twisted (at least 8.2.0), see http://twistedmatrix.com/")
  94
  95   def twisted_fail(x, y=None):
  96     fail("you don't seem to have twisted's %s module." % x,
  97          "your distro is most likely modular, look for a twisted %s package%s." % (x, " %s" % y if y else "",))
  98
  99   try:
 100     import twisted.names
 101   except ImportError:
 102     twisted_fail("names")
 103
 104   try:
 105     import twisted.mail
 106   except ImportError:
 107     twisted_fail("mail")
 108
 109   try:
 110     import twisted.web
 111   except ImportError:
 112     twisted_fail("web", "(not web2)")
 113
 114   try:
 115     import twisted.words
 116   except ImportError:
 117     twisted_fail("words")
 118
 119 def check_json():
 120   import qwebirc.util.qjson
 121   if qwebirc.util.qjson.slow:
 122     warn("simplejson module with C speedups not installed.",
 123          "using embedded module (slower); consider installing simplejson from:",
 124          "http://pypi.python.org/pypi/simplejson/")
 125     return 1
 126   return 0
 127
 128 def check_autobahn():
 129   import qwebirc.util.autobahn_check as autobahn_check
 130   v = autobahn_check.check()
 131   if v == True:
 132     return 0
 133
 134   if v == False:
 135     warn("autobahn not installed; websocket support will be disabled.",
 136          "consider installing autobahn from:",
 137          "http://autobahn.ws/python/getstarted/")
 138     return 1
 139
 140   warn("error loading autobahn: %s; websocket support will be disabled." % v,
 141        "consider installing/upgrading autobahn from:",
 142        "http://autobahn.ws/python/getstarted/")
 143   return 1
 144
 145 if __name__ == "__main__":
 146   import dependencies
 147   dependencies.check_dependencies()