Mercurial > hg > mercurial-crew-with-dirclash

annotate mercurial/packagescan.py @ 2568:52ce0d6bc375

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HTTPS: fix python2.3, persistent connections, don't explode if SSL is not available The urllib2 differences between python 2.3 and 2.4 are hidden by using keepalive.py, which also gives us support for persistent connections. Support for HTTPS is enabled only if there's a HTTPSHandler class in urllib2. It's not possible to have separate classes as handlers for HTTP and HTTPS: to support persistent HTTPS connections, we need a class that inherits from both keepalive.HTTPHandler and urllib2.HTTPSHandler. If we try to pass (an instance of) this class and (an instance of) the httphandler class to urllib2.build_opener, this function ends up getting confused, since both classes are subclasses of the HTTPHandler default handler, and raises an exception.
author Alexis S. L. Carvalho <alexis@cecm.usp.br>
date Thu, 06 Jul 2006 03:14:55 -0300
parents 976b6b2a1613
children c4325f0a9b91
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1 # packagescan.py - Helper module for identifing used modules.
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2 # Used for the py2exe distutil.
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3 # This module must be the first mercurial module imported in setup.py
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4 #
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5 # Copyright 2005 Volker Kleinfeld <Volker.Kleinfeld@gmx.de>
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6 #
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7 # This software may be used and distributed according to the terms
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8 # of the GNU General Public License, incorporated herein by reference.
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9 import glob
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10 import os
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11 import sys
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12 import ihooks
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13 import types
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14 import string
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15
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16 # Install this module as fake demandload module
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17 sys.modules['mercurial.demandload'] = sys.modules[__name__]
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18
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19 # Requiredmodules contains the modules imported by demandload.
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20 # Please note that demandload can be invoked before the
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21 # mercurial.packagescan.scan method is invoked in case a mercurial
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22 # module is imported.
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23 requiredmodules = {}
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24 def demandload(scope, modules):
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25 """ fake demandload function that collects the required modules
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26 foo import foo
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27 foo bar import foo, bar
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28 foo.bar import foo.bar
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29 foo:bar from foo import bar
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30 foo:bar,quux from foo import bar, quux
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31 foo.bar:quux from foo.bar import quux"""
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32
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33 for m in modules.split():
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34 mod = None
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35 try:
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36 module, fromlist = m.split(':')
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37 fromlist = fromlist.split(',')
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38 except:
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39 module = m
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40 fromlist = []
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41 mod = __import__(module, scope, scope, fromlist)
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42 if fromlist == []:
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43 # mod is only the top package, but we need all packages
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44 comp = module.split('.')
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45 i = 1
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46 mn = comp[0]
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47 while True:
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48 # mn and mod.__name__ might not be the same
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49 scope[mn] = mod
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50 requiredmodules[mod.__name__] = 1
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51 if len(comp) == i: break
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52 mod = getattr(mod,comp[i])
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53 mn = string.join(comp[:i+1],'.')
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54 i += 1
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55 else:
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56 # mod is the last package in the component list
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57 requiredmodules[mod.__name__] = 1
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58 for f in fromlist:
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59 scope[f] = getattr(mod,f)
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60 if type(scope[f]) == types.ModuleType:
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61 requiredmodules[scope[f].__name__] = 1
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62
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63 class SkipPackage(Exception):
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64 def __init__(self, reason):
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65 self.reason = reason
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66
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67 scan_in_progress = False
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68
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69 def scan(libpath,packagename):
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70 """ helper for finding all required modules of package <packagename> """
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71 global scan_in_progress
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72 scan_in_progress = True
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73 # Use the package in the build directory
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74 libpath = os.path.abspath(libpath)
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75 sys.path.insert(0,libpath)
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76 packdir = os.path.join(libpath,packagename.replace('.', '/'))
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77 # A normal import would not find the package in
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78 # the build directory. ihook is used to force the import.
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79 # After the package is imported the import scope for
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80 # the following imports is settled.
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81 p = importfrom(packdir)
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82 globals()[packagename] = p
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83 sys.modules[packagename] = p
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84 # Fetch the python modules in the package
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85 cwd = os.getcwd()
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86 os.chdir(packdir)
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87 pymodulefiles = glob.glob('*.py')
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88 extmodulefiles = glob.glob('*.pyd')
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89 os.chdir(cwd)
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90 # Import all python modules and by that run the fake demandload
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91 for m in pymodulefiles:
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92 if m == '__init__.py': continue
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93 tmp = {}
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94 mname,ext = os.path.splitext(m)
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95 fullname = packagename+'.'+mname
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96 try:
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97 __import__(fullname,tmp,tmp)
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98 except SkipPackage, inst:
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99 print >> sys.stderr, 'skipping %s: %s' % (fullname, inst.reason)
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100 continue
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101 requiredmodules[fullname] = 1
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102 # Import all extension modules and by that run the fake demandload
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103 for m in extmodulefiles:
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104 tmp = {}
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105 mname,ext = os.path.splitext(m)
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106 fullname = packagename+'.'+mname
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107 __import__(fullname,tmp,tmp)
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108 requiredmodules[fullname] = 1
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109
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110 def getmodules():
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111 return requiredmodules.keys()
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112
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113 def importfrom(filename):
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114 """
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115 import module/package from a named file and returns the module.
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116 It does not check on sys.modules or includes the module in the scope.
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117 """
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118 loader = ihooks.BasicModuleLoader()
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119 path, file = os.path.split(filename)
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120 name, ext = os.path.splitext(file)
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121 m = loader.find_module_in_dir(name, path)
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122 if not m:
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123 raise ImportError, name
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124 m = loader.load_module(name, m)
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125 return m