587
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# Duplicating setuptools' site.py...
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def __boot():
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PYTHONPATH = []
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if sys.platform=='win32':
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PYTHONPATH.append(os.path.join(sys.prefix, 'lib'))
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if not (os.environ.get('PYTHONPATH') is None or (sys.platform=='win32' and not os.environ.get('PYTHONPATH'))):
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PYTHONPATH.extend(os.environ.get('PYTHONPATH').split(os.pathsep))
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pic = getattr(sys,'path_importer_cache',{})
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stdpath = sys.path[len(PYTHONPATH):]
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mydir = os.path.dirname(__file__)
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known_paths = dict([(makepath(item)[1],1) for item in sys.path]) # 2.2 comp
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oldpos = getattr(sys,'__egginsert',0) # save old insertion position
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sys.__egginsert = 0 # and reset the current one
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for item in PYTHONPATH:
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addsitedir(item)
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item_site_packages = os.path.join(item, 'site-packages')
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if os.path.exists(item_site_packages):
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addsitedir(item_site_packages)
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sys.__egginsert += oldpos # restore effective old position
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d,nd = makepath(stdpath[0])
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insert_at = None
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new_path = []
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for item in sys.path:
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p,np = makepath(item)
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if np==nd and insert_at is None:
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# We've hit the first 'system' path entry, so added entries go here
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insert_at = len(new_path)
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if np in known_paths or insert_at is None:
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new_path.append(item)
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else:
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# new path after the insert point, back-insert it
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new_path.insert(insert_at, item)
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insert_at += 1
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sys.path[:] = new_path
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import sys
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import os
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import __builtin__
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def makepath(*paths):
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dir = os.path.abspath(os.path.join(*paths))
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return dir, os.path.normcase(dir)
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def abs__file__():
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"""Set all module' __file__ attribute to an absolute path"""
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for m in sys.modules.values():
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try:
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m.__file__ = os.path.abspath(m.__file__)
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except AttributeError:
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continue
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try:
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set
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except NameError:
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class set:
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def __init__(self, args=()):
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self.d = {}
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for v in args:
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self.d[v] = None
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def __contains__(self, key):
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return key in self.d
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def add(self, key):
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self.d[key] = None
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def removeduppaths():
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""" Remove duplicate entries from sys.path along with making them
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absolute"""
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# This ensures that the initial path provided by the interpreter contains
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# only absolute pathnames, even if we're running from the build directory.
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L = []
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known_paths = set()
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for dir in sys.path:
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# Filter out duplicate paths (on case-insensitive file systems also
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# if they only differ in case); turn relative paths into absolute
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# paths.
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dir, dircase = makepath(dir)
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if not dircase in known_paths:
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L.append(dir)
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known_paths.add(dircase)
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sys.path[:] = L
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return known_paths
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def _init_pathinfo():
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"""Return a set containing all existing directory entries from sys.path"""
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d = set()
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for dir in sys.path:
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try:
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if os.path.isdir(dir):
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dir, dircase = makepath(dir)
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d.add(dircase)
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except TypeError:
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continue
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return d
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def addpackage(sitedir, name, known_paths, exclude_packages=()):
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"""Add a new path to known_paths by combining sitedir and 'name' or execute
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sitedir if it starts with 'import'"""
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import fnmatch
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if known_paths is None:
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_init_pathinfo()
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reset = 1
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else:
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reset = 0
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fullname = os.path.join(sitedir, name)
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try:
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f = open(fullname, "rU")
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except IOError:
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return
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try:
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for line in f:
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if line.startswith("#"):
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continue
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found_exclude = False
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for exclude in exclude_packages:
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if exclude(line):
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found_exclude = True
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break
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if found_exclude:
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continue
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if line.startswith("import"):
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exec line
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continue
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line = line.rstrip()
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dir, dircase = makepath(sitedir, line)
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if not dircase in known_paths and os.path.exists(dir):
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sys.path.append(dir)
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known_paths.add(dircase)
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finally:
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f.close()
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if reset:
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known_paths = None
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return known_paths
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def addsitedir(sitedir, known_paths=None, exclude_packages=()):
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"""Add 'sitedir' argument to sys.path if missing and handle .pth files in
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'sitedir'"""
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if known_paths is None:
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known_paths = _init_pathinfo()
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reset = 1
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else:
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reset = 0
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sitedir, sitedircase = makepath(sitedir)
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if not sitedircase in known_paths:
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sys.path.append(sitedir) # Add path component
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try:
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names = os.listdir(sitedir)
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except os.error:
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return
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names.sort()
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for name in names:
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if name.endswith(os.extsep + "pth"):
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addpackage(sitedir, name, known_paths,
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exclude_packages=exclude_packages)
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if reset:
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known_paths = None
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return known_paths
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def addsitepackages(known_paths):
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"""Add site-packages (and possibly site-python) to sys.path"""
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prefixes = [os.path.join(sys.prefix, "local"), sys.prefix]
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if sys.exec_prefix != sys.prefix:
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prefixes.append(os.path.join(sys.exec_prefix, "local"))
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for prefix in prefixes:
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if prefix:
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if sys.platform in ('os2emx', 'riscos'):
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sitedirs = [os.path.join(prefix, "Lib", "site-packages")]
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elif os.sep == '/':
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sitedirs = [os.path.join(prefix,
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"lib",
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"python" + sys.version[:3],
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"site-packages"),
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os.path.join(prefix, "lib", "site-python")]
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try:
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# sys.getobjects only available in --with-pydebug build
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# pylint: disable-msg=E1101
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sys.getobjects
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sitedirs.insert(0, os.path.join(sitedirs[0], 'debug'))
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except AttributeError:
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pass
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else:
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sitedirs = [prefix, os.path.join(prefix, "lib", "site-packages")]
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if sys.platform == 'darwin':
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sitedirs.append( os.path.join('/opt/local', 'lib', 'python' + sys.version[:3], 'site-packages') )
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# for framework builds *only* we add the standard Apple
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# locations. Currently only per-user, but /Library and
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# /Network/Library could be added too
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if 'Python.framework' in prefix:
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home = os.environ.get('HOME')
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if home:
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sitedirs.append(
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os.path.join(home,
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'Library',
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'Python',
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sys.version[:3],
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'site-packages'))
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for sitedir in sitedirs:
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if os.path.isdir(sitedir):
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addsitedir(sitedir, known_paths,
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exclude_packages=[lambda line: 'setuptools' in line])
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return None
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def setquit():
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"""Define new built-ins 'quit' and 'exit'.
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These are simply strings that display a hint on how to exit.
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"""
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if os.sep == ':':
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exit = 'Use Cmd-Q to quit.'
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elif os.sep == '\\':
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exit = 'Use Ctrl-Z plus Return to exit.'
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else:
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exit = 'Use Ctrl-D (i.e. EOF) to exit.'
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__builtin__.quit = __builtin__.exit = exit
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class _Printer(object):
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"""interactive prompt objects for printing the license text, a list of
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contributors and the copyright notice."""
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MAXLINES = 23
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def __init__(self, name, data, files=(), dirs=()):
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self.__name = name
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self.__data = data
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self.__files = files
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self.__dirs = dirs
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self.__lines = None
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def __setup(self):
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if self.__lines:
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return
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data = None
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for dir in self.__dirs:
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for filename in self.__files:
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filename = os.path.join(dir, filename)
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try:
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fp = file(filename, "rU")
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data = fp.read()
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fp.close()
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break
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except IOError:
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pass
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if data:
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break
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if not data:
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data = self.__data
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self.__lines = data.split('\n')
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self.__linecnt = len(self.__lines)
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def __repr__(self):
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self.__setup()
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if len(self.__lines) <= self.MAXLINES:
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return "\n".join(self.__lines)
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else:
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return "Type %s() to see the full %s text" % ((self.__name,)*2)
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def __call__(self):
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self.__setup()
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prompt = 'Hit Return for more, or q (and Return) to quit: '
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lineno = 0
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while 1:
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try:
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for i in range(lineno, lineno + self.MAXLINES):
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print self.__lines[i]
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except IndexError:
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break
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else:
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lineno += self.MAXLINES
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key = None
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while key is None:
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key = raw_input(prompt)
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if key not in ('', 'q'):
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key = None
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if key == 'q':
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break
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def setcopyright():
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"""Set 'copyright' and 'credits' in __builtin__"""
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__builtin__.copyright = _Printer("copyright", sys.copyright)
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if sys.platform[:4] == 'java':
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__builtin__.credits = _Printer(
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"credits",
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"Jython is maintained by the Jython developers (www.jython.org).")
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else:
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__builtin__.credits = _Printer("credits", """\
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Thanks to CWI, CNRI, BeOpen.com, Zope Corporation and a cast of thousands
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for supporting Python development. See www.python.org for more information.""")
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here = os.path.dirname(os.__file__)
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__builtin__.license = _Printer(
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"license", "See http://www.python.org/%.3s/license.html" % sys.version,
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["LICENSE.txt", "LICENSE"],
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[os.path.join(here, os.pardir), here, os.curdir])
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class _Helper(object):
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"""Define the built-in 'help'.
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This is a wrapper around pydoc.help (with a twist).
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"""
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def __repr__(self):
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return "Type help() for interactive help, " \
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"or help(object) for help about object."
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def __call__(self, *args, **kwds):
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import pydoc
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return pydoc.help(*args, **kwds)
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def sethelper():
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__builtin__.help = _Helper()
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def aliasmbcs():
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"""On Windows, some default encodings are not provided by Python,
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while they are always available as "mbcs" in each locale. Make
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them usable by aliasing to "mbcs" in such a case."""
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if sys.platform == 'win32':
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import locale, codecs
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enc = locale.getdefaultlocale()[1]
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if enc.startswith('cp'): # "cp***" ?
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try:
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codecs.lookup(enc)
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except LookupError:
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import encodings
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encodings._cache[enc] = encodings._unknown
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encodings.aliases.aliases[enc] = 'mbcs'
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def setencoding():
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"""Set the string encoding used by the Unicode implementation. The
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default is 'ascii', but if you're willing to experiment, you can
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change this."""
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encoding = "ascii" # Default value set by _PyUnicode_Init()
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if 0:
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# Enable to support locale aware default string encodings.
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import locale
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loc = locale.getdefaultlocale()
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if loc[1]:
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encoding = loc[1]
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if 0:
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# Enable to switch off string to Unicode coercion and implicit
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# Unicode to string conversion.
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encoding = "undefined"
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if encoding != "ascii":
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# On Non-Unicode builds this will raise an AttributeError...
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sys.setdefaultencoding(encoding) # Needs Python Unicode build !
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def execsitecustomize():
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"""Run custom site specific code, if available."""
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try:
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import sitecustomize
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358 |
except ImportError:
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pass
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360 |
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361 |
def fixup_setuptools():
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"""Make sure our setuptools monkeypatch is in place"""
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for i in range(len(sys.path)):
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if sys.path[i].find('setuptools') != -1:
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path = sys.path[i]
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del sys.path[i]
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367 |
sys.path.append(path)
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369 |
def main():
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abs__file__()
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paths_in_sys = removeduppaths()
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if include_site_packages:
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paths_in_sys = addsitepackages(paths_in_sys)
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374 |
setquit()
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375 |
setcopyright()
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376 |
sethelper()
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377 |
aliasmbcs()
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378 |
setencoding()
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379 |
execsitecustomize()
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380 |
# Remove sys.setdefaultencoding() so that users cannot change the
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381 |
# encoding after initialization. The test for presence is needed when
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382 |
# this module is run as a script, because this code is executed twice.
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383 |
if hasattr(sys, "setdefaultencoding"):
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384 |
del sys.setdefaultencoding
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385 |
__boot()
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386 |
fixup_setuptools()
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387 |
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388 |
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389 |
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390 |
include_site_packages = False
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392 |
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393 |
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394 |
main()
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