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_json()
  22   i+=check_java()
  23   i+=check_hg()
  24
  25   print "0 errors, %d warnings." % i
  26
  27   if i == 0:
  28     print "looks like you've got everything you need to run qwebirc!"
  29   else:
  30     print "you can run qwebirc despite these."
  31
  32   f = open(".checked", "w")
  33   f.close()
  34
  35 def check_win32():
  36   if not sys.platform.startswith("win"):
  37     return
  38
  39   try:
  40     import win32con
  41   except ImportError:
  42     fail("qwebirc requires pywin32, see:", "http://sourceforge.net/project/showfiles.php?group_id=78018")
  43
  44 def check_java():
  45   def java_warn(specific):
  46     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/")
  47
  48   try:
  49     p = subprocess.Popen(["java", "-version"], stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=os.name == "nt")
  50     p.communicate()
  51     if p.wait() != 0:
  52       java_warn("something went wrong looking for java.")
  53       return 1
  54   except: # ugh
  55     java_warn("couldn't find java.")
  56     return 1
  57
  58   return 0
  59
  60 def check_hg():
  61   def hg_warn(specific):
  62     warn(specific, "mercurial (hg) is not required, but allows qwebirc to save bandwidth by versioning.", "you can get hg at http://www.selenic.com/mercurial/")
  63
  64   try:
  65     p = subprocess.Popen(["hg", "id"], stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=os.name == "nt")
  66     p.communicate()
  67     if p.wait() != 0:
  68       hg_warn("something went wrong looking for mercurial.")
  69       return 1
  70   except: # ugh
  71     hg_warn("couldn't find mercurial.")
  72     return 1
  73
  74   return 0
  75
  76 def check_zope():
  77   try:
  78     from zope.interface import Interface
  79   except ImportError:
  80     if sys.platform.startswith("win"):
  81       fail("qwebirc requires zope interface",
  82            "see pypi: http://pypi.python.org/pypi/zope.interface")
  83     else:
  84       fail("qwebirc requires zope interface.",
  85            "this should normally come with twisted, but can be downloaded",
  86            "from pypi: http://pypi.python.org/pypi/zope.interface")
  87
  88 def check_twisted():
  89   try:
  90     import twisted
  91   except ImportError:
  92     fail("qwebirc requires twisted (at least 8.2.0), see http://twistedmatrix.com/")
  93
  94   def twisted_fail(x, y=None):
  95     fail("you don't seem to have twisted's %s module." % x,
  96          "your distro is most likely modular, look for a twisted %s package%s." % (x, " %s" % y if y else "",))
  97
  98   try:
  99     import twisted.names
 100   except ImportError:
 101     twisted_fail("names")
 102
 103   try:
 104     import twisted.mail
 105   except ImportError:
 106     twisted_fail("mail")
 107
 108   try:
 109     import twisted.web
 110   except ImportError:
 111     twisted_fail("web", "(not web2)")
 112
 113   try:
 114     import twisted.words
 115   except ImportError:
 116     twisted_fail("words")
 117
 118 def check_json():
 119   import qwebirc.util.qjson
 120   if qwebirc.util.qjson.slow:
 121     warn("simplejson module with C speedups not installed.",
 122          "using embedded module (slower); consider installing simplejson from:",
 123          "http://pypi.python.org/pypi/simplejson/")
 124     return 1
 125   return 0
 126
 127 if __name__ == "__main__":
 128   import dependencies
 129   dependencies.check_dependencies()