Mercurial > hg
view mercurial/packagescan.py @ 2810:ca06d35af65e
Rename merge.allow -> merge.branchmerge
author | Matt Mackall <mpm@selenic.com> |
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date | Mon, 07 Aug 2006 23:53:04 -0500 |
parents | c4325f0a9b91 |
children | 345bac2bc4ec 0171a5432621 |
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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