diff options
Diffstat (limited to 'Lib/os.py')
| -rw-r--r-- | Lib/os.py | 157 |
1 files changed, 56 insertions, 101 deletions
@@ -147,8 +147,8 @@ SEEK_END = 2 # Super directory utilities. # (Inspired by Eric Raymond; the doc strings are mostly his) -def makedirs(name, mode=0777): - """makedirs(path [, mode=0777]) +def makedirs(name, mode=0o777): + """makedirs(path [, mode=0o777]) Super-mkdir; create a leaf directory and all intermediate ones. Works like mkdir, except that any intermediate path segment (not @@ -405,108 +405,63 @@ def _execvpe(file, args, env=None): raise error, saved_exc, saved_tb raise error, last_exc, tb -# Change environ to automatically call putenv() if it exists -try: - # This will fail if there's no putenv - putenv -except NameError: - pass + +if name == "riscos": + # On RISC OS, all env access goes through getenv and putenv + from riscosenviron import _Environ else: - import UserDict - - # Fake unsetenv() for Windows - # not sure about os2 here but - # I'm guessing they are the same. - - if name in ('os2', 'nt'): - def unsetenv(key): - putenv(key, "") - - if name == "riscos": - # On RISC OS, all env access goes through getenv and putenv - from riscosenviron import _Environ - elif name in ('os2', 'nt'): # Where Env Var Names Must Be UPPERCASE - # But we store them as upper case - class _Environ(UserDict.IterableUserDict): - def __init__(self, environ): - UserDict.UserDict.__init__(self) - data = self.data - for k, v in environ.items(): - data[k.upper()] = v - def __setitem__(self, key, item): - putenv(key, item) - self.data[key.upper()] = item - def __getitem__(self, key): - return self.data[key.upper()] - try: - unsetenv - except NameError: - def __delitem__(self, key): - del self.data[key.upper()] - else: - def __delitem__(self, key): - unsetenv(key) - del self.data[key.upper()] - def __contains__(self, key): - return key.upper() in self.data - def get(self, key, failobj=None): - return self.data.get(key.upper(), failobj) - def update(self, dict=None, **kwargs): - if dict: - try: - keys = dict.keys() - except AttributeError: - # List of (key, value) - for k, v in dict: - self[k] = v - else: - # got keys - # cannot use items(), since mappings - # may not have them. - for k in keys: - self[k] = dict[k] - if kwargs: - self.update(kwargs) - def copy(self): - return dict(self) + # Change environ to automatically call putenv(), unsetenv if they exist. + from _abcoll import MutableMapping # Can't use collections (bootstrap) + + class _Environ(MutableMapping): + def __init__(self, environ, keymap, putenv, unsetenv): + self.keymap = keymap + self.putenv = putenv + self.unsetenv = unsetenv + self.data = data = {} + for key, value in environ.items(): + data[keymap(key)] = value + def __getitem__(self, key): + return self.data[self.keymap(key)] + def __setitem__(self, key, item): + self.putenv(key, item) + self.data[self.keymap(key)] = item + def __delitem__(self, key): + self.unsetenv(key) + del self.data[self.keymap(key)] + def __iter__(self): + for key in self.data: + yield key + def __len__(self): + return len(self.data) + def copy(self): + return dict(self) + def setdefault(self, key, value): + if key not in self: + self[key] = value + return self[key] + + try: + _putenv = putenv + except NameError: + _putenv = lambda key, value: None + else: + __all__.append("putenv") + + try: + _unsetenv = unsetenv + except NameError: + _unsetenv = lambda key: _putenv(key, "") + else: + __all__.append("unsetenv") + if name in ('os2', 'nt'): # Where Env Var Names Must Be UPPERCASE + _keymap = lambda key: key.upper() else: # Where Env Var Names Can Be Mixed Case - class _Environ(UserDict.IterableUserDict): - def __init__(self, environ): - UserDict.UserDict.__init__(self) - self.data = environ - def __setitem__(self, key, item): - putenv(key, item) - self.data[key] = item - def update(self, dict=None, **kwargs): - if dict: - try: - keys = dict.keys() - except AttributeError: - # List of (key, value) - for k, v in dict: - self[k] = v - else: - # got keys - # cannot use items(), since mappings - # may not have them. - for k in keys: - self[k] = dict[k] - if kwargs: - self.update(kwargs) - try: - unsetenv - except NameError: - pass - else: - def __delitem__(self, key): - unsetenv(key) - del self.data[key] - def copy(self): - return dict(self) - - - environ = _Environ(environ) + _keymap = lambda key: key + + environ = _Environ(environ, _keymap, _putenv, _unsetenv) + def getenv(key, default=None): """Get an environment variable, return None if it doesn't exist. |