Deleting ni.py; renamed to ni1.py, really.

1 files changed, 0 insertions, 434 deletions

diff --git a/Lib/ni.py b/Lib/ni.py
deleted file mode 100644
index 95c9b59..0000000
--- a/Lib/ni.py
+++ /dev/null
@@ -1,434 +0,0 @@
-"""New import scheme with package support.
-
-Quick Reference
----------------
-
-- To enable package support, execute "import ni" before importing any
-  packages.  Importing this module automatically installs the relevant
-  import hooks.
-
-- To create a package named spam containing sub-modules ham, bacon and
-  eggs, create a directory spam somewhere on Python's module search
-  path (i.e. spam's parent directory must be one of the directories in
-  sys.path or $PYTHONPATH); then create files ham.py, bacon.py and
-  eggs.py inside spam.
-
-- To import module ham from package spam and use function hamneggs()
-  from that module, you can either do
-
-    import spam.ham		# *not* "import spam" !!!
-    spam.ham.hamneggs()
-
-  or
-
-    from spam import ham
-    ham.hamneggs()
-
-  or
-
-    from spam.ham import hamneggs
-    hamneggs()
-
-- Importing just "spam" does not do what you expect: it creates an
-  empty package named spam if one does not already exist, but it does
-  not import spam's submodules.  The only submodule that is guaranteed
-  to be imported is spam.__init__, if it exists.  Note that
-  spam.__init__ is a submodule of package spam.  It can reference to
-  spam's namespace via the '__.' prefix, for instance
-
-    __.spam_inited = 1		# Set a package-level variable
-
-
-
-Theory of Operation
--------------------
-
-A Package is a module that can contain other modules.  Packages can be
-nested.  Package introduce dotted names for modules, like P.Q.M, which
-could correspond to a file P/Q/M.py found somewhere on sys.path.  It
-is possible to import a package itself, though this makes little sense
-unless the package contains a module called __init__.
-
-A package has two variables that control the namespace used for
-packages and modules, both initialized to sensible defaults the first
-time the package is referenced.
-
-(1) A package's *module search path*, contained in the per-package
-variable __path__, defines a list of *directories* where submodules or
-subpackages of the package are searched.  It is initialized to the
-directory containing the package.  Setting this variable to None makes
-the module search path default to sys.path (this is not quite the same
-as setting it to sys.path, since the latter won't track later
-assignments to sys.path).
-
-(2) A package's *import domain*, contained in the per-package variable
-__domain__, defines a list of *packages* that are searched (using
-their respective module search paths) to satisfy imports.  It is
-initialized to the list cosisting of the package itself, its parent
-package, its parent's parent, and so on, ending with the root package
-(the nameless package containing all top-level packages and modules,
-whose module search path is None, implying sys.path).
-
-The default domain implements a search algorithm called "expanding
-search".  An alternative search algorithm called "explicit search"
-fixes the import search path to contain only the root package,
-requiring the modules in the package to name all imported modules by
-their full name.  The convention of using '__' to refer to the current
-package (both as a per-module variable and in module names) can be
-used by packages using explicit search to refer to modules in the same
-package; this combination is known as "explicit-relative search".
-
-The PackageImporter and PackageLoader classes together implement the
-following policies:
-
-- There is a root package, whose name is ''.  It cannot be imported
-  directly but may be referenced, e.g. by using '__' from a top-level
-  module.
-
-- In each module or package, the variable '__' contains a reference to
-  the parent package; in the root package, '__' points to itself.
-
-- In the name for imported modules (e.g. M in "import M" or "from M
-  import ..."), a leading '__' refers to the current package (i.e.
-  the package containing the current module); leading '__.__' and so
-  on refer to the current package's parent, and so on.  The use of
-  '__' elsewhere in the module name is not supported.
-
-- Modules are searched using the "expanding search" algorithm by
-  virtue of the default value for __domain__.
-
-- If A.B.C is imported, A is searched using __domain__; then
-  subpackage B is searched in A using its __path__, and so on.
-
-- Built-in modules have priority: even if a file sys.py exists in a
-  package, "import sys" imports the built-in sys module.
-
-- The same holds for frozen modules, for better or for worse.
-
-- Submodules and subpackages are not automatically loaded when their
-  parent packages is loaded.
-
-- The construct "from package import *" is illegal.  (It can still be
-  used to import names from a module.)
-
-- When "from package import module1, module2, ..." is used, those
-    modules are explicitly loaded.
-
-- When a package is loaded, if it has a submodule __init__, that
-  module is loaded.  This is the place where required submodules can
-  be loaded, the __path__ variable extended, etc.  The __init__ module
-  is loaded even if the package was loaded only in order to create a
-  stub for a sub-package: if "import P.Q.R" is the first reference to
-  P, and P has a submodule __init__, P.__init__ is loaded before P.Q
-  is even searched.
-
-Caveats:
-
-- It is possible to import a package that has no __init__ submodule;
-  this is not particularly useful but there may be useful applications
-  for it (e.g. to manipulate its search paths from the outside!).
-
-- There are no special provisions for os.chdir().  If you plan to use
-  os.chdir() before you have imported all your modules, it is better
-  not to have relative pathnames in sys.path.  (This could actually be
-  fixed by changing the implementation of path_join() in the hook to
-  absolutize paths.)
-
-- Packages and modules are introduced in sys.modules as soon as their
-  loading is started.  When the loading is terminated by an exception,
-  the sys.modules entries remain around.
-
-- There are no special measures to support mutually recursive modules,
-  but it will work under the same conditions where it works in the
-  flat module space system.
-
-- Sometimes dummy entries (whose value is None) are entered in
-  sys.modules, to indicate that a particular module does not exist --
-  this is done to speed up the expanding search algorithm when a
-  module residing at a higher level is repeatedly imported (Python
-  promises that importing a previously imported module is cheap!)
-
-- Although dynamically loaded extensions are allowed inside packages,
-  the current implementation (hardcoded in the interpreter) of their
-  initialization may cause problems if an extension invokes the
-  interpreter during its initialization.
-
-- reload() may find another version of the module only if it occurs on
-  the package search path.  Thus, it keeps the connection to the
-  package to which the module belongs, but may find a different file.
-
-XXX Need to have an explicit name for '', e.g. '__root__'.
-
-"""
-
-
-import imp
-import string
-import sys
-import __builtin__
-
-import ihooks
-from ihooks import ModuleLoader, ModuleImporter
-
-
-class PackageLoader(ModuleLoader):
-
-    """A subclass of ModuleLoader with package support.
-
-    find_module_in_dir() will succeed if there's a subdirectory with
-    the given name; load_module() will create a stub for a package and
-    load its __init__ module if it exists.
-
-    """
-
-    def find_module_in_dir(self, name, dir):
-	if dir is not None:
-	    dirname = self.hooks.path_join(dir, name)
-	    if self.hooks.path_isdir(dirname):
-		return None, dirname, ('', '', 'PACKAGE')
-	return ModuleLoader.find_module_in_dir(self, name, dir)
-
-    def load_module(self, name, stuff):
-	file, filename, info = stuff
-	suff, mode, type = info
-	if type == 'PACKAGE':
-	    return self.load_package(name, stuff)
-	if sys.modules.has_key(name):
-	    m = sys.modules[name]
-	else:
-	    sys.modules[name] = m = imp.new_module(name)
-	self.set_parent(m)
-	if type == imp.C_EXTENSION and '.' in name:
-	    return self.load_dynamic(name, stuff)
-	else:
-	    return ModuleLoader.load_module(self, name, stuff)
-
-    def load_dynamic(self, name, stuff):
-	file, filename, (suff, mode, type) = stuff
-	# Hack around restriction in imp.load_dynamic()
-	i = string.rfind(name, '.')
-	tail = name[i+1:]
-	if sys.modules.has_key(tail):
-	    save = sys.modules[tail]
-	else:
-	    save = None
-	sys.modules[tail] = imp.new_module(name)
-	try:
-	    m = imp.load_dynamic(tail, filename, file)
-	finally:
-	    if save:
-		sys.modules[tail] = save
-	    else:
-		del sys.modules[tail]
-	sys.modules[name] = m
-	return m
-
-    def load_package(self, name, stuff):
-	file, filename, info = stuff
-	if sys.modules.has_key(name):
-	    package = sys.modules[name]
-	else:
-	    sys.modules[name] = package = imp.new_module(name)
-	package.__path__ = [filename]
-	self.init_package(package)
-	return package
-
-    def init_package(self, package):
-	self.set_parent(package)
-	self.set_domain(package)
-	self.call_init_module(package)
-
-    def set_parent(self, m):
-	name = m.__name__
-	if '.' in name:
-	    name = name[:string.rfind(name, '.')]
-	else:
-	    name = ''
-	m.__ = sys.modules[name]
-
-    def set_domain(self, package):
-	name = package.__name__
-	package.__domain__ = domain = [name]
-	while '.' in name:
-	    name = name[:string.rfind(name, '.')]
-	    domain.append(name)
-	if name:
-	    domain.append('')
-
-    def call_init_module(self, package):
-	stuff = self.find_module('__init__', package.__path__)
-	if stuff:
-	    m = self.load_module(package.__name__ + '.__init__', stuff)
-	    package.__init__ = m
-
-
-class PackageImporter(ModuleImporter):
-
-    """Importer that understands packages and '__'."""
-
-    def __init__(self, loader = None, verbose = 0):
-	ModuleImporter.__init__(self,
-	loader or PackageLoader(None, verbose), verbose)
-
-    def import_module(self, name, globals={}, locals={}, fromlist=[]):
-	if globals.has_key('__'):
-	    package = globals['__']
-	else:
-	    # No calling context, assume in root package
-	    package = sys.modules['']
-	if name[:3] in ('__.', '__'):
-	    p = package
-	    name = name[3:]
-	    while name[:3] in ('__.', '__'):
-		p = p.__
-		name = name[3:]
-	    if not name:
-		return self.finish(package, p, '', fromlist)
-	    if '.' in name:
-		i = string.find(name, '.')
-		name, tail = name[:i], name[i:]
-	    else:
-		tail = ''
-	    mname = p.__name__ and p.__name__+'.'+name or name
-	    m = self.get1(mname)
-	    return self.finish(package, m, tail, fromlist)
-	if '.' in name:
-	    i = string.find(name, '.')
-	    name, tail = name[:i], name[i:]
-	else:
-	    tail = ''
-	for pname in package.__domain__:
-	    mname = pname and pname+'.'+name or name
-	    m = self.get0(mname)
-	    if m: break
-	else:
-	    raise ImportError, "No such module %s" % name
-	return self.finish(m, m, tail, fromlist)
-
-    def finish(self, module, m, tail, fromlist):
-	# Got ....A; now get ....A.B.C.D
-	yname = m.__name__
-	if tail and sys.modules.has_key(yname + tail): # Fast path
-	    yname, tail = yname + tail, ''
-	    m = self.get1(yname)
-	while tail:
-	    i = string.find(tail, '.', 1)
-	    if i > 0:
-		head, tail = tail[:i], tail[i:]
-	    else:
-		head, tail = tail, ''
-	    yname = yname + head
-	    m = self.get1(yname)
-
-	# Got ....A.B.C.D; now finalize things depending on fromlist
-	if not fromlist:
-	    return module
-	if '__' in fromlist:
-	    raise ImportError, "Can't import __ from anywhere"
-	if not hasattr(m, '__path__'): return m
-	if '*' in fromlist:
-	    raise ImportError, "Can't import * from a package"
-	for f in fromlist:
-	    if hasattr(m, f): continue
-	    fname = yname + '.' + f
-	    self.get1(fname)
-	return m
-
-    def get1(self, name):
-	m = self.get(name)
-	if not m:
-	    raise ImportError, "No module named %s" % name
-	return m
-
-    def get0(self, name):
-	m = self.get(name)
-	if not m:
-	    sys.modules[name] = None
-	return m
-
-    def get(self, name):
-	# Internal routine to get or load a module when its parent exists
-	if sys.modules.has_key(name):
-	    return sys.modules[name]
-	if '.' in name:
-	    i = string.rfind(name, '.')
-	    head, tail = name[:i], name[i+1:]
-	else:
-	    head, tail = '', name
-	path = sys.modules[head].__path__
-	stuff = self.loader.find_module(tail, path)
-	if not stuff:
-	    return None
-	sys.modules[name] = m = self.loader.load_module(name, stuff)
-	if head:
-	    setattr(sys.modules[head], tail, m)
-	return m
-
-    def reload(self, module):
-	name = module.__name__
-	if '.' in name:
-	    i = string.rfind(name, '.')
-	    head, tail = name[:i], name[i+1:]
-	    path = sys.modules[head].__path__
-	else:
-	    tail = name
-	    path = sys.modules[''].__path__
-	stuff = self.loader.find_module(tail, path)
-	if not stuff:
-	    raise ImportError, "No module named %s" % name
-	return self.loader.load_module(name, stuff)
-
-    def unload(self, module):
-	if hasattr(module, '__path__'):
-	    raise ImportError, "don't know how to unload packages yet"
-	PackageImporter.unload(self, module)
-
-    def install(self):
-	if not sys.modules.has_key(''):
-	    sys.modules[''] = package = imp.new_module('')
-	    package.__path__ = None
-	    self.loader.init_package(package)
-	    for m in sys.modules.values():
-		if not m: continue
-		if not hasattr(m, '__'):
-		    self.loader.set_parent(m)
-	ModuleImporter.install(self)
-
-
-def install(v = 0):
-    ihooks.install(PackageImporter(None, v))
-
-def uninstall():
-    ihooks.uninstall()
-
-def ni(v = 0):
-    install(v)
-
-def no():
-    uninstall()
-
-def test():
-    import pdb
-    try:
-	testproper()
-    except:
-	sys.last_type, sys.last_value, sys.last_traceback = sys.exc_info()
-	print
-	print sys.last_type, ':', sys.last_value
-	print
-	pdb.pm()
-
-def testproper():
-    install(1)
-    try:
-	import mactest
-	print dir(mactest)
-	raw_input('OK?')
-    finally:
-	uninstall()
-
-
-if __name__ == '__main__':
-    test()
-else:
-    install()