Mercurial > hg > mercurial-crew-with-dirclash
view mercurial/packagescan.py @ 2568:52ce0d6bc375
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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# packagescan.py - Helper module for identifing used modules. # Used for the py2exe distutil. # This module must be the first mercurial module imported in setup.py # # Copyright 2005 Volker Kleinfeld <Volker.Kleinfeld@gmx.de> # # This software may be used and distributed according to the terms # of the GNU General Public License, incorporated herein by reference. import glob import os import sys import ihooks import types import string # Install this module as fake demandload module sys.modules['mercurial.demandload'] = sys.modules[__name__] # Requiredmodules contains the modules imported by demandload. # Please note that demandload can be invoked before the # mercurial.packagescan.scan method is invoked in case a mercurial # module is imported. requiredmodules = {} def demandload(scope, modules): """ fake demandload function that collects the required modules foo import foo foo bar import foo, bar foo.bar import foo.bar foo:bar from foo import bar foo:bar,quux from foo import bar, quux foo.bar:quux from foo.bar import quux""" for m in modules.split(): mod = None try: module, fromlist = m.split(':') fromlist = fromlist.split(',') except: module = m fromlist = [] mod = __import__(module, scope, scope, fromlist) if fromlist == []: # mod is only the top package, but we need all packages comp = module.split('.') i = 1 mn = comp[0] while True: # mn and mod.__name__ might not be the same scope[mn] = mod requiredmodules[mod.__name__] = 1 if len(comp) == i: break mod = getattr(mod,comp[i]) mn = string.join(comp[:i+1],'.') i += 1 else: # mod is the last package in the component list requiredmodules[mod.__name__] = 1 for f in fromlist: scope[f] = getattr(mod,f) if type(scope[f]) == types.ModuleType: requiredmodules[scope[f].__name__] = 1 class SkipPackage(Exception): def __init__(self, reason): self.reason = reason scan_in_progress = False def scan(libpath,packagename): """ helper for finding all required modules of package <packagename> """ global scan_in_progress scan_in_progress = True # Use the package in the build directory libpath = os.path.abspath(libpath) sys.path.insert(0,libpath) packdir = os.path.join(libpath,packagename.replace('.', '/')) # A normal import would not find the package in # the build directory. ihook is used to force the import. # After the package is imported the import scope for # the following imports is settled. p = importfrom(packdir) globals()[packagename] = p sys.modules[packagename] = p # Fetch the python modules in the package cwd = os.getcwd() os.chdir(packdir) pymodulefiles = glob.glob('*.py') extmodulefiles = glob.glob('*.pyd') os.chdir(cwd) # Import all python modules and by that run the fake demandload for m in pymodulefiles: if m == '__init__.py': continue tmp = {} mname,ext = os.path.splitext(m) fullname = packagename+'.'+mname try: __import__(fullname,tmp,tmp) except SkipPackage, inst: print >> sys.stderr, 'skipping %s: %s' % (fullname, inst.reason) continue requiredmodules[fullname] = 1 # Import all extension modules and by that run the fake demandload for m in extmodulefiles: tmp = {} mname,ext = os.path.splitext(m) fullname = packagename+'.'+mname __import__(fullname,tmp,tmp) requiredmodules[fullname] = 1 def getmodules(): return requiredmodules.keys() def importfrom(filename): """ import module/package from a named file and returns the module. It does not check on sys.modules or includes the module in the scope. """ loader = ihooks.BasicModuleLoader() path, file = os.path.split(filename) name, ext = os.path.splitext(file) m = loader.find_module_in_dir(name, path) if not m: raise ImportError, name m = loader.load_module(name, m) return m