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use new apipkg version 

--HG--
branch : trunk
This commit is contained in:
holger krekel 2009-10-29 11:47:12 +01:00
parent 690ccaedc1
commit 455b0afdfe
1 changed files with 16 additions and 19 deletions
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35
_py/apipkg.py
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@ -11,54 +11,51 @@ from types import ModuleType
__version__ = "1.0b2" __version__ = "1.0b2"
def initpkg(pkgname, exportdefs): def initpkg(pkgname, exportdefs):
""" initialize given package from the export definitions. """ initialize given package from the export definitions. """
replace it in sys.modules mod = ApiModule(pkgname, exportdefs, implprefix=pkgname)
"""
mod = ApiModule(pkgname, exportdefs)
oldmod = sys.modules[pkgname] oldmod = sys.modules[pkgname]
mod.__file__ = getattr(oldmod, '__file__', None) mod.__file__ = getattr(oldmod, '__file__', None)
mod.__version__ = getattr(oldmod, '__version__', None) mod.__version__ = getattr(oldmod, '__version__', None)
mod.__path__ = getattr(oldmod, '__path__', None) mod.__path__ = getattr(oldmod, '__path__', None)
sys.modules[pkgname] = mod sys.modules[pkgname] = mod
def importobj(importspec): def importobj(modpath, attrname):
""" return object specified by importspec."""
modpath, attrname = importspec.split(":")
module = __import__(modpath, None, None, ['__doc__']) module = __import__(modpath, None, None, ['__doc__'])
return getattr(module, attrname) return getattr(module, attrname)
class ApiModule(ModuleType): class ApiModule(ModuleType):
def __init__(self, name, importspec, parent=None): def __init__(self, name, importspec, implprefix=None):
self.__name__ = name self.__name__ = name
self.__all__ = list(importspec) self.__all__ = list(importspec)
self.__map__ = {} self.__map__ = {}
self.__implprefix__ = implprefix or name
for name, importspec in importspec.items(): for name, importspec in importspec.items():
if isinstance(importspec, dict): if isinstance(importspec, dict):
package = '%s.%s'%(self.__name__, name) subname = '%s.%s'%(self.__name__, name)
apimod = ApiModule(package, importspec, parent=self) apimod = ApiModule(subname, importspec, implprefix)
sys.modules[package] = apimod sys.modules[subname] = apimod
setattr(self, name, apimod) setattr(self, name, apimod)
else: else:
if not importspec.count(":") == 1: modpath, attrname = importspec.split(':')
raise ValueError("invalid importspec %r" % (importspec,)) if modpath[0] == '.':
modpath = implprefix + modpath
if name == '__doc__': if name == '__doc__':
self.__doc__ = importobj(importspec) self.__doc__ = importobj(modpath, attrname)
else: else:
if importspec[0] == '.': self.__map__[name] = (modpath, attrname)
importspec = self.__name__ + importspec
self.__map__[name] = importspec
def __repr__(self): def __repr__(self):
return '<ApiModule %r>' % (self.__name__,) return '<ApiModule %r>' % (self.__name__,)
def __getattr__(self, name): def __getattr__(self, name):
try: try:
importspec = self.__map__.pop(name) modpath, attrname = self.__map__[name]
except KeyError: except KeyError:
raise AttributeError(name) raise AttributeError(name)
else: else:
result = importobj(importspec) result = importobj(modpath, attrname)
setattr(self, name, result) setattr(self, name, result)
del self.__map__[name]
return result return result
def __dict__(self): def __dict__(self):